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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 1903. Отображено 194.
10-01-2002 дата публикации

СПОСОБ ИЗВЛЕЧЕНИЯ НИКЕЛЯ И/ИЛИ КОБАЛЬТА ИЗ РУДЫ ИЛИ КОНЦЕНТРАТА

Номер: RU2178007C2

FIELD: nonferrous metallurgy. SUBSTANCE: ore or concentrate is oxidized at pressure and temperature between 130 and 250 C in presence of oxygen and acidic solution containing sulfuric acid and metal sulfate hydrolyzed in the same solution and also halogen ions to form solution of recovered metal. EFFECT: reduced expenses and improved quality of recovered metal. 22 cl, 7 dwg 0032 сС ПЧ с» (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ `” 2 178 007 (51) МПК” (13) С2 С 22 В 3/06/С 22 В 23:00 (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98100436/02, 04.01.1996 (24) Дата начала действия патента: 04.01.1996 (30) Приоритет: 07.06.1995 Ц$ 08/488,128 (43) Дата публикации заявки: 27.10.1999 (46) Дата публикации: 10.01.2002 (56) Ссылки: Ч$ 3761566, 25.09.1970. 4$ 4971662, 20.11.1990. ($ 4039406, 02.08.1977. 0$ 4338168, 06.07.1982. Ц$ 4093526, 06.06.1918. ЗИ 629890 А, 25.08.1978. ЗЧ 988889 А, 15.01.1983. (85) Дата перевода заявки РСТ на национальную фазу: 08.01.1998 (86) Заявка РСТ: СА 96/00003 (04.01.1996) (87) Публикация РСТ: М/О 96/41026 (19.12.1996) (71) Заявитель: Коминко Енджиниэринг Сэвисиз Элтиди (СА) (72) Изобретатель: ДЖОУНС Дэвид Л. (СА) (73) Патентообладатель: Коминко Енджиниэринг Сэвисиз Элтиди (СА) (74) Патентный поверенный: Попеленский Николай Константинович (54) СПОСОБ ИЗВЛЕЧЕНИЯ НИКЕЛЯ И/ИЛИ КОБАЛЬТА ИЗ РУДЫ ИЛИ КОНЦЕНТРАТА (57) Изобретение может быть использовано для гидрометаллургического извлечения никеля и/или кобальта из руд и концентратов. Предложенный способ — предусматривает окисление руды или концентрата под давлением при 130°С - 250°С в присутствии кислорода и кислого раствора, содержащего серную кислоту или сульфат металла, гидролизуемый в кислом растворе, а также ионы галогена, с получением раствора извлекаемого металла, обеспечивается удешевление процесса и повышение степени извлечения металлов. 21 з. п. ф-лы, 7 ил. , 1 табл. | вода ь Я НЗОд зусисицированньй 45 на} концентрат, пзаальчьным ; нием : паз ...

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27-09-1998 дата публикации

СПОСОБ ИЗВЛЕЧЕНИЯ ОКСИДА ЦИНКА (ВАРИАНТЫ)

Номер: RU2119542C1

FIELD: recovery of zinc oxide from industrial waste materials containing various components including zinc, lead, iron and cadmium. SUBSTANCE: waste material is treated with ammonium chloride solution at elevated temperature, insoluble components are separated from solution, solution is treated with metallic zinc to force undesirable metal ions from solution, the solution is then cooled to deposit zinc compounds therefrom, deposited zinc compounds are washed to remove undesirable compounds such as zinc diaminodichloride and remaining zinc compound (which is essentially zinc hydroxide) is dried to obtain essentially pure zinc oxide. EFFECT: more efficient recovery method. 23 cl, 6 dwg, 4 tbl сучегьс ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2 119 542 ' 13) Сл С 22 В 19/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 94036766/02, 10.11.1992 (30) Приоритет: 15.01.1992 1$ 820987 (46) Дата публикации: 27.09.1998 (56) Ссылки: Ц5, патент, 3849121, кл. С 22 В ЗО, 1974. (71) Заявитель: Металз Ресайклинг Текнолоджиз Корп. (ЦЗ) (72) Изобретатель: Аллан С.Майерсон (Ц$) (73) Патентообладатель: Металз Ресайклинг Текнолоджиз Корп. (ЦЗ) (54) СПОСОБ ИЗВЛЕЧЕНИЯ ОКСИДА ЦИНКА (ВАРИАНТЫ) (57) Реферат: Способ может быть использован для извлечения оксида цинка из промышленных отработанных материалов, содержащих различные компоненты, включающие цинк, свинец, железо и кадмий. Отработанный материал обрабатывают раствором хлорида аммония при повышенных температурах, отделяют нерастворившиеся компоненты из раствора, раствор обрабатывают металлическим цинком для вытеснения нежелательных металлических ионов из раствора, затем раствор охлаждают для осаждения из него соединений цинка, осажденные соединения цинка промывают для удаления таких нежелательных соединений, как диаминодихлорид цинка и оставшееся соединение цинка, которое по существу является гидроксидом цинка, высушивают, в результате получают, по существу, чистый оксид цинка. ...

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10-05-2011 дата публикации

СПОСОБ ПРОИЗВОДСТВА МЕТАЛЛИЧЕСКИХ ПРОДУКТОВ

Номер: RU2009140320A
Принадлежит:

... 1. Способ промышленной очистки подаваемого потока низкосортного поливалентного катиона с чистотой P1 путем образования осадка двойной соли поливалентного катиона с чистотой P2 и раствора поливалентного катиона с чистотой P3, где P2>P1>P3, причем поливалентный катион выбирают из группы, состоящей из Ti(II), Ti(III), Fe(II), Mn, Zn, Co, Cr, Al, Cd, Tin, Ni, V и Cd, и упомянутый способ включает следующие этапы: ! a) образования из упомянутого потока среды, содержащей воду, упомянутый поливалентный катион, катион, выбираемый из группы, состоящей из аммония, катионов щелочных металлов, протонов и любого их сочетания, и анионы, причем образовавшаяся среда далее характеризуется присутствием (i) осадка двойной соли, содержащего упомянутый поливалентный катион, по меньшей мере один из упомянутых катионов и по меньшей мере один из упомянутых анионов; и (ii) раствор поливалентного катиона; в которой концентрация упомянутых анионов больше 10% и соотношение между концентрациями упомянутого катиона и ...

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08-09-1983 дата публикации

VERFAHREN ZUR ZINKGEWINNUNG AUS ZINKHALTIGEM SULFIDISCHEN MATERIAL

Номер: DE0003306506A1
Принадлежит:

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31-03-2002 дата публикации

Bioleaching of sulphide minerals

Номер: AP0200202438D0
Автор:
Принадлежит:

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03-06-2005 дата публикации

Bioleaching of sulphide minerals.

Номер: AP0000001421A
Принадлежит:

A method of bioleaching a slurry containing sulphide minerals which includes the step of supplying a feed gas containing in excess of 21% oxygen by volume, to the slurry, increases the rate of oxygen transfer from the gas to the liquid phase. Combined with the use of high temperatures between 50°C and 100°C and thermophile microorganisms the rate of sulphide mineral leaching is greatly enhanced.

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17-01-2006 дата публикации

Recovery of copper from copper bearing sulphide minerals by bioleaching with controlled oxygen feed.

Номер: AP0000001551A
Принадлежит:

A method of recovering copper from a copper bearing sulphide mineral which includes the steps of subjecting the slurry to a bioleaching process, supplying a feed gas which contains in excess of 21% oxygen by volume, to the slurry, and recovering copper from a bioleach residue of the bioleaching process.

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06-12-2005 дата публикации

Recovery of zinc from zinc bearing sulphide minerals by bioleaching and electrowinning.

Номер: AP0000001505A
Принадлежит:

A method of recovering zinc from a zinc bearing sulphide mineral slurry to a bioleaching process, supplying a feed gas which contains in excess of 21% oxygen by volume, to the slurry, and recovering zinc from a bioleach residue of the bioleaching process.

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31-08-2011 дата публикации

Method for extracting zinc from aqueous ammoniacalsolutions.

Номер: AP2011005783A0
Принадлежит:

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31-03-2002 дата публикации

Bioleaching of sulphide minerals

Номер: AP2002002438A0
Автор:
Принадлежит:

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31-03-2002 дата публикации

Recovery of zinc from zinc bearing sulphide minerals by bioleaching and wlwctrowinning

Номер: AP2002002437A0
Автор:
Принадлежит:

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31-03-2002 дата публикации

Recovery of copper from copper bearing sulphide minerals by bioleaching with controlled oxygen feed

Номер: AP2002002439A0
Автор:
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31-07-2014 дата публикации

Method for extracting zinc from aqueous ammoniacalsolutions

Номер: AP0000002944A
Принадлежит:

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31-03-2004 дата публикации

Zinc recovery process.

Номер: AP2004003004A0
Автор:
Принадлежит:

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25-07-2007 дата публикации

Zinc recovery process.

Номер: AP0000001757A
Принадлежит:

A process for the recovery of zinc metal from a zinc mineral includes the steps of leaching the zinc mineral in a solution including a halide species formed from two or more different halides, to leach the zinc into the solution. The zinc-bearing solution is then electrolysed to yield zinc metal and to generate the halide species. The electrolysed solution including the halide species is then returned to the leaching step. A portion of the electrolysed solution can be removed as a bleed stream from a cathode compartment of an electrolytic cell of the electrolysis process and processed to remove manganese as manganese dioxide precipitate by adding thereto limestone, and the halide species from an anode compartment of the electrolysis process. In this regard, the pH and Eh of the solution can be regulated in a manner that favours the formation of the manganese dioxide precipitate over the formation of a precipitate of zinc.

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07-12-2001 дата публикации

Chloride assisted hydrometallurgical copper extraction

Номер: OA0000010430A
Автор: JONES DAVID L
Принадлежит:

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24-09-2002 дата публикации

Chloride assisted hydrometallurgical extraction ofmetal

Номер: OA0000010643A
Автор: JONES DAVID L
Принадлежит:

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31-03-2002 дата публикации

Bioleaching of sulphide minerals

Номер: AP0200202438A0
Автор:
Принадлежит:

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31-03-2002 дата публикации

Recovery of zinc from zinc bearing sulphide minerals by bioleaching and wlwctrowinning

Номер: AP0200202437A0
Автор:
Принадлежит:

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31-08-2011 дата публикации

Method for extracting zinc from aqueous ammoniacalsolutions.

Номер: AP0201105783D0
Принадлежит:

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31-03-2004 дата публикации

Zinc recovery process.

Номер: AP0200403004D0
Автор:
Принадлежит:

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31-03-2002 дата публикации

Recovery of zinc from zinc bearing sulphide minerals by bioleaching and wlwctrowinning

Номер: AP0200202437D0
Автор:
Принадлежит:

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31-03-2002 дата публикации

Recovery of copper from copper bearing sulphide minerals by bioleaching with controlled oxygen feed

Номер: AP0200202439D0
Автор:
Принадлежит:

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31-03-2004 дата публикации

Zinc recovery process.

Номер: AP0200403004A0
Автор:
Принадлежит:

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31-03-2002 дата публикации

Recovery of copper from copper bearing sulphide minerals by bioleaching with controlled oxygen feed

Номер: AP0200202439A0
Автор:
Принадлежит:

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31-08-2011 дата публикации

Method for extracting zinc from aqueous ammoniacalsolutions.

Номер: AP0201105783A0
Принадлежит:

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15-03-2008 дата публикации

ZINC PRODUCTION PROCEDURE

Номер: AT0000386825T
Принадлежит:

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15-02-1979 дата публикации

VERFAHREN ZUR AUFARBEITUNG VON BUNTMETALL- HYDROXIDSCHLAMM-ABFAELLEN

Номер: ATA341577A
Автор:
Принадлежит:

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15-07-1979 дата публикации

Optical transport network with path monitoring

Номер: ATA403976A
Автор:
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15-09-2011 дата публикации

PROCEDURE FOR RECOVERING INDIUM FROM A INDIUMHALTIGEN MATERIAL

Номер: AT0000522629T
Принадлежит:

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15-12-1976 дата публикации

PROCEDURE FOR THE DISTANCE OF ZINC FROM A WASSERIGEN PASSWORD

Номер: AT0000877374A
Принадлежит:

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15-11-2007 дата публикации

RECYCLING OF USED OF ELECTRICAL CELLS BY HYDRAULICMETALLURGICAL TREATMENT

Номер: AT0000377847T
Принадлежит:

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10-03-1982 дата публикации

PROCEDURE FOR THE HYDRAULICMETALLURGICAL PROCESSING OF ZINKHAELTIGEN MATERIALS

Номер: AT0000366102B
Принадлежит:

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15-04-1990 дата публикации

HYDRAULICMETALLURGICAL PROCEDURE FOR THE PRODUCTION OF ZINC.

Номер: AT0000051900T
Принадлежит:

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15-08-2003 дата публикации

WET-CHEMICAL PROCEDURE FOR THE PROCESSING OF STEEL PLANT TYPES OF DUST

Номер: AT0000246264T
Принадлежит:

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08-03-1979 дата публикации

PROCESS FOR MANGANESE REMOVAL FROM METAL BEARING SOLUTIONS

Номер: AU0000498352B2
Принадлежит:

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26-06-1980 дата публикации

TREATING SILICATES HYDROMETALLURGICALLY

Номер: AU0000510500B2
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02-07-2020 дата публикации

Improved zinc oxide process

Номер: AU2018382228A1
Принадлежит: MINETOMETAL PTY LTD

Controlled crystallisation of zinc containing crystals from a zinc containing purified ammonia – ammonium chloride liquor where the liquor used has a composition of 0.3 to 1M/l Zinc, 1 to 5M/l NH3 and 0.5 to 2.5M/l NH4Cl and is obtained by leaching oxidic zinc feed material and the crystals are precipitated by reducing the concentration of free ammonia to <1M/l where the zinc containing crystals are precipitated at a carefully controlled temperature where the temperature is controlled by maintaining the system at a set pressure and the target temperature is set based on the liquor composition and the desired composition of the zinc crystals.

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10-04-2001 дата публикации

Method and apparatus for achieving enhanced oxygen mass transfer in slurry systems

Номер: AU0007391800A
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29-09-1983 дата публикации

SOLVENT EXTRACTION PROCESS

Номер: AU0009142982A
Принадлежит:

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16-03-2006 дата публикации

Method for the hydrolytic precipitation of iron

Номер: AU2002217171B2
Принадлежит:

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14-03-2013 дата публикации

Hydrometallurgical method for the recovery of zinc in a sulphur medium starting from sulphudic zinc concentrates

Номер: AU2011365350A1
Принадлежит:

The invention relates to a method wherein the zinc concentrate is subjected to the following steps: a. roasting at least one part of the zinc concentrate; b. neutral leaching, wherein the zinc oxide is dissolved; c. acid leaching, wherein the zinc ferrites are leached; d. reducing the Fe ...

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17-06-2004 дата публикации

Chloride assisted hydrometallurgical extraction of metal

Номер: AU0000694960C
Принадлежит:

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03-05-1984 дата публикации

PURIFICATION OF ZINC SULPHATE SOLUTIONS

Номер: AU0000536376B2
Автор: NAME NOT GIVEN
Принадлежит:

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12-10-1978 дата публикации

SOLVENT EXTRACTION

Номер: AU0002412777A
Принадлежит:

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17-01-1985 дата публикации

PROCESS FOR REDUCING ZINC CONSUMPTION IN ZINC ELECTROLYTE PURIFICATION

Номер: AU0003044084A
Принадлежит:

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14-11-2000 дата публикации

Purification of zinc-bearing material solutions containing manganese

Номер: AU0003547900A
Принадлежит:

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10-04-2001 дата публикации

Bioleaching of sulphide minerals

Номер: AU0002301201A
Принадлежит:

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26-04-1994 дата публикации

Method for the enhanced recovery of zinc oxide

Номер: AU0004853593A
Автор: MYERSON ALLAN S
Принадлежит:

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15-03-2001 дата публикации

RECOVERY OF COPPER FROM COPPER BEARING SULPHIDE MINERALS BY BIOLEACHING WITH CONTROLLED OXYGEN FEED

Номер: CA0002383817A1
Принадлежит:

A method of recovering copper from a copper bearing sulphide mineral which includes the steps of subjecting the slurry to a bioleaching process, supplying a feed gas which contains in excess of 21 % oxygen by volume, to the slurry, and recovering copper from a bioleach residue of the bioleaching process.

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19-12-1996 дата публикации

PROCESS FOR THE RECOVERY OF NICKEL AND/OR COBALT FROM A CONCENTRATE

Номер: CA0002356048A1
Автор: JONES, DAVID L.

A process for the recovery of nickel and/or cobalt values from a concentrate containing nickel or cobalt hydroxide comprises the steps of subjecting the concentrate to a leaching stage with an ammonium solution to produce a leach solution containing nickel and/or cobalt values and a residue. The nickel concentration in the leach solution is controlled to a maximum value of about 3 to 25 g/l, preferably 8 to 15 g/l and more preferably 10 g/l.

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01-12-2009 дата публикации

HEAP BIOLEACHING PROCESS FOR THE EXTRACTION OF ZINC

Номер: CA0002353002C
Принадлежит: TECK COMINCO METALS LTD.

A method of extracting zinc from a sulphidic ore is provided which comprises bioleaching the ore in a heap with acidophilic microorganisms to produce a pregnant leach solution which is recovered from the bottom of the heap. An integrated process which comprises subjecting the pregnant leach solution to neutralization and solvent extraction to produce a concentrated zinc solution is also provided. Zinc may be recovered from the concentrated solution by means of electrowinning, either in the absence or presence of manganese. Alternatively zinc may be recovered in the form of a zinc compound.

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12-10-1982 дата публикации

ZINC DUST PURIFICATION OF ZINC SULPHATE SOLUTION

Номер: CA1133229A
Принадлежит: COMINCO LTD, COMINCO LTD.

A process for the removal of cadmium, copper, cobalt and nickel impurities from zinc sulphate solution by zinc dust cementation with an antimony promoter of said cementation as an aqueous solution of antimony in the pentavalent state. The aqueous solution of antimony may be prepared by oxidation of an aqueous solution of a trivalent antimony compound such as potassium antimony tartrate to the pentavalent state or by dissolving a hexafluoroantimonate such as sodium antimony hexafluoride in water.

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31-07-1979 дата публикации

CONTINUOUS SEPARATION OF SOLID METAL IMPURITIES FROM ZINC SULPHATE SOLUTIONS

Номер: CA1059441A

The continuous separation of the solid phase in the purification of zinc sulphate solutions is carried out by subjecting the solutions to a continuous filtration in a chamber disc filter including filtering elements clothed with a synthetic filtering cloth and under an elevated pressure up to 4 atm. to obtain copper-cadmium and cobalt cakes in the form of a fine grained precipitate, and mechanically removing the precipitate from the filtering elements by the action of a jet of hot zinc sulphate solution under pressure.

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24-10-1978 дата публикации

SEPARATION OF IRON FROM ZINC SOLUTIONS OR SLURRIES

Номер: CA1040867A
Принадлежит: INCO LTD, INCO LTD.

To enable its removal down to very low levels from zinc sulfate solutions or slurries, iron is oxidized to the ferric state by using sulfur dioxide/oxygen mixtures under specified conditions.

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16-03-2006 дата публикации

PREPARATION OF ZINC CHEMICALS FROM THE MINOR FLOW OF A PROCESS

Номер: CA0002577863A1
Автор: RUONALA, MIKKO
Принадлежит:

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15-03-2001 дата публикации

RECOVERY OF NICKEL FROM NICKEL BEARING SULPHIDE MINERALS BY BIOLEACHING

Номер: CA0002383816A1
Принадлежит:

A method of recovering nickel from a nickel bearing sulphide mineral slurry which includes the steps of subjecting the slurry to a bioleaching process, supplying a feed gas which contains in excess of 21 % oxygen by volume, to the slurry, and recovering nickel from a bioleach residue of the bioleaching process.

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17-02-1976 дата публикации

PROCEDE DE PURIFICATION DE SOLUTIONS DE SULFATE DE ZINC

Номер: CA0000983726A1
Автор: BODSON FERNAND
Принадлежит:

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13-06-2002 дата публикации

METHOD FOR THE HYDROLYTIC PRECITPITATION OF IRON

Номер: CA0002429889A1
Автор: FUGLEBERG, SIGMUND
Принадлежит:

The invention relates to a method for the hydrolytic precipitation of iron from a sulphate solution as jarosite. A sulphate-containing solution, with iron present in divalent form, is routed to an iron precipitation stage, where the iron is oxidised to the trivalent form using an oxagen-containing gas. Also present in the precipitation stage are Na, K or NH4ions and jarosite nuclei.

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17-11-2020 дата публикации

METHOD OF EXTRACTING METALS FROM POLYMETALLIC SULPHIDE ORES OR CONCENTRATES

Номер: CA0003081014A1
Принадлежит: HICKS INTELLECTUAL PROPERTY LAW

A method of extracting metals from polymetallic sulphide ores or concentrates comprising at least Cu, Zn, Pb and Ag, comprising a first step of atmospheric leaching in sulphate medium in the presence of recycled silver for extracting Cu and Zn and a second step of atmospheric leaching in chloride medium for extracting Pb and Ag. The project leading to this application has received funding from the European Union's Horizon-2020 research and innovation programme under Grant Agreement No. 689515.

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14-11-2013 дата публикации

CADMIUM REMOVING PROCESS IN ZINC-CONTAINING SOLUTION PURIFICATION AND PURIFICATION METHOD OF ZINC-CONTAINING SOLUTION

Номер: CA0002872927A1
Принадлежит:

Disclosed are a cadmium removing process in zinc-containing solution purification with better cadmium removing effect and a purification method of zinc-containing solution with desired purification effect. The cadmium removing process in zinc-containing solution purification in the present invention includes following steps: 1) removing colloid from neutral leachate or supernatant of the neutral leachate after precipitation to obtain zinc-containing solution with colloid content less than or equal 50 mg/L; 2) performing zinc powder substitution in zinc-containing solution to at least replace cadmium; 3) carrying out solid-liquid separation to filter the zinc-containing solution containing impurity of cadmium, wherein filtering time is controlled within 60 minutes and filter precision is controlled within 10µm. In the present invention, the process of removing colloid from neutral leachate or supernatant first and then performing zinc powder substitution and filtration for solid-liquid separation ...

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11-07-2017 дата публикации

CADMIUM REMOVING PROCESS IN ZINC-CONTAINING SOLUTION PURIFICATION AND PURIFICATION METHOD OF ZINC-CONTAINING SOLUTION

Номер: CA0002872927C

Disclosed are a cadmium removing process in zinc-containing solution purification with better cadmium removing effect and a purification method of zinc-containing solution with desired purification effect. The cadmium removing process in zinc-containing solution purification in the present invention includes following steps: 1) removing colloid from neutral leachate or supernatant of the neutral leachate after precipitation to obtain zinc-containing solution with colloid content less than or equal 50 mg/L; 2) performing zinc powder substitution in zinc-containing solution to at least replace cadmium; 3) carrying out solid-liquid separation to filter the zinc-containing solution containing impurity of cadmium, wherein filtering time is controlled within 60 minutes and filter precision is controlled within 10µm. In the present invention, the process of removing colloid from neutral leachate or supernatant first and then performing zinc powder substitution and filtration for solid-liquid separation ...

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06-12-1993 дата публикации

CHEMICAL PROCESS

Номер: CA0002097158A1
Принадлежит:

CHEMICAL PROCESS A process for extracting metal values especially zinc values from aqueous solutions of metal salts which comprises contacting the aqueous solution with an organic phase comprising a compound of the formula: I wherein each of R1, R2, R3 and R4, independently, represents an optionally substituted hydrocarbyl or hydrocarbyloxy group or R1 and R2 together with the attached phosphorus atom and/or R3 and R4 together with the attached phosphorus atom form a 5- to 8-membered heterocyclic ring.

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17-06-2008 дата публикации

PROCESSING OF ELECTRODEPOSITED METAL POWDER IN A BASIC ENVIRONMENT

Номер: CA0002251846C
Принадлежит: OGILVY RENAULT LLP/S.E.N.C.R.L.,S.R.L.

Le traitement selon l'invention se caractérise en ce que, à l'issue de l'électrolyse (10), on soumet tout d'abord la solution basique chargée en poudremétallique électrodéposée décrochée de la cathode à une séparation solide/liquide (17), on soumet ensuite la fraction solide recueillie (11) à un cycle opératoire de lavages-essorages à l'eau (16-19) sans nécessaire ajout d'agent de passivation, et ce jusqu'à l'obtention d'une solution de lavage (20) présentant un pH abaissé à une valeur autour de 9, puis, après une nouvelle séparation solide/liquide (21), on effectue sur la fraction solide humide recueillie (18) une dessiccation (22) parévaporation sous vide à basse température jusqu'à l' obtention d'une poudre métallique bien fluide (12), l'ensemble de ces opérations étant réalisé à l'abri de l'air, avantageusement de manière séquentielle dans un appareil étanche unique, tel qu'un filtre à cloche de type "GUEDU" du commerce. Ce traitement, qui s'inscrit avantageusement à la suite d'un procédé ...

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31-12-1997 дата публикации

PROCESS AND APPARATUS FOR PRODUCTION OF USEFUL IRON PRODUCT FROM INDUSTRIAL WASTE STREAMS

Номер: CA0002259325A1
Принадлежит:

A method and apparatus for producing a more concentrated iron product from an industrial waste materials stream (10) comprising iron and non-iron constituents such as EAF dust generally including the steps of compacting (60 A) the waste materials stream, roasting (14 B) the waste materials stream separating (600) the iron compounds contained in the waste materials stream by magnetic separation or flotation, and providing the iron compounds back to the EAF is described.

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03-01-1921 дата публикации

Maschine zum Bearbeiten von Metallstücken durch Schleifen.

Номер: CH0000087799A
Принадлежит: WALTER DUCKETT

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30-12-2008 дата публикации

ИЗГОТОВЛЕНИЕ ЦИНКОВЫХ ХИМИЧЕСКИХ РЕАКТИВОВ ИЗ НЕОСНОВНОГО ПОТОКА ПРОЦЕССА

Номер: EA0000010853B1
Принадлежит: ОТОТЕК ОЮЙ (FI)

Изобретение представляет собой новый способ получения чистых цинковых химических реактивов из неосновного потока процесса получения цинка по типу отжига-растворения-электролиза. Изобретение основано на том, что часть содержащего сульфат цинка раствора, получаемого при растворении на установке отжига-растворения-электролиза, направляют на получение цинковых химических реактивов. Действующий способ извлечения цинка, который основан на электролизе, не нарушается, поскольку только часть раствора сульфата цинка направляют на получение цинковых химических реактивов. Способ экстрагирования основан на использовании любой органически замещенной фосфорной кислоты или органически замещенной тиофосфорной кислоты. Концентрированный раствор кислоты, который образуется в качестве побочного продукта при способе экстрагирования цинка, возвращают назад в способ изготовления цинка по типу отжига-растворения-электролиза.

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29-05-2015 дата публикации

HYDRO METALLURGICAL METHOD OF EXTRACTING ZINC IN SULPHURIC ACID MEDIUM FROM SULFIDE ZINC CONCENTRATES WITH HIGH CONTENT OF IRON

Номер: EA0201370115A1
Автор:
Принадлежит:

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25-12-2000 дата публикации

СПОСОБ ПОЛНОГО ОСАЖДЕНИЯ ЦЕННЫХ МЕТАЛЛОВ ИЗ КИСЛОТНОГО ВЫЩЕЛАЧИВАЮЩЕГО РАСТВОРА

Номер: EA200000543A2
Принадлежит:

... (57) В заявке описан способ полного осаждения ценных металлов из выщелачивающего раствора, который подкислен серной кислотой и который практически свободен от примесей, путем нейтрализации этого раствора известью и/или известняком. Нейтрализацию проводят, по меньшей мере, в две стадии, благодаря чему на первой стадии осуществляют только частичное осаждение и благодаря чему полное осаждение остающегося ценного металлического компонента осуществляют на последней стадии добавлением избытка нейтрализующего агента. Включающий осадки и оставшийся твердым нейтрализующий агент шлам, образующийся в процессе нейтрализации на последней стадии, возвращают на первую стадию нейтрализации возможно после повторного растворения этого шлама в поступающем кислотном выщелачивающем растворе. Количество шлама, возвращаемое совместно со всем дополнительно добавленным нейтрализующим агентом, управляет частичным осаждением ценного металлического компонента. Не содержащий нейтрализующего агента и образующийся на ...

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23-04-2001 дата публикации

A METHOD OF PURIFYING ACID LEACHING SOLUTION

Номер: EA0200000476A3
Принадлежит:

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30-01-2012 дата публикации

ИЗВЛЕЧЕНИЕ ЦЕННЫХ ПОБОЧНЫХ ОКСИДОВ ЦИНКА, ОБОГАЩЕННЫХ ФТОРИДАМИ И ХЛОРИДАМИ

Номер: EA201100979A1
Принадлежит:

В настоящей заявке описан способ удаления галогенидов, в частности, хлоридов и фторидов, исходя из побочных оксидов цинка, например вельц- или Primus-оксидов, включающий стадии: (1) промывки побочных оксидов цинка карбонатом натрия и отделения твердого остатка из базовой жидкости, (2) выщелачивания по меньшей мере одной части твердого остатка со стадии 1 посредством H2SO4, предпочтительно до рН от 2,5 до 4, отделения твердого остатка из кислой жидкости, (3) обработки жидкости со стадии 2 добавкой ионов А13+ и PO43+ и нейтрализующего агента для удаления остаточных фторидов, предпочтительно при рН < 4 и отделения жидкости из твердого остатка, содержащего фториды.

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26-10-2007 дата публикации

ИЗГОТОВЛЕНИЕ ЦИНКОВЫХ ХИМИЧЕСКИХ РЕАКТИВОВ ИЗ НЕОСНОВНОГО ПОТОКА ПРОЦЕССА

Номер: EA0200700420A1
Принадлежит:

Изобретение представляет собой новый способ получения чистых цинковых химических реактивов из неосновного потока процесса получения цинка по типу отжига-растворения-электролиза. Изобретение основано на том, что часть содержащего сульфат цинка раствора, получаемого при растворении на установке отжига-растворения-электролиза, направляют на получение цинковых химических реактивов. Действующий способ извлечения цинка, который основан на электролизе, не нарушается, поскольку только часть раствора сульфата цинка направляют на получение цинковых химических реактивов. Способ экстрагирования основан на использовании любой органически замещенной фосфорной кислоты или органически замещенной тиофосфорной кислоты. Концентрированный раствор кислоты, который образуется в качестве побочного продукта при способе экстрагирования цинка, возвращают назад в способ изготовления цинка по типу отжига-растворения-электролиза.

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27-02-2007 дата публикации

СПОСОБ УДАЛЕНИЯ ТАЛЛИЯ ИЗ ЦИНКСОДЕРЖАЩЕГО РАСТВОРА

Номер: EA0000007859B1

Настоящее изобретение относится к способу удаления таллия из цинксодержащего раствора. В частности, способ относится к очистке раствора, поступающего на электролитическое получение цинка, при помощи порошка металлического цинка. В соответствии с настоящим способом таллий удаляют путем образования его соединения со свинцом во время проведения операции очистки раствора, которая представляет собой либо операцию окончательной очистки, либо операцию очистки, во время которой осаждают кадмий.

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29-08-2002 дата публикации

СПОСОБ ОЧИСТКИ РАСТВОРА КИСЛОТНОГО ВЫЩЕЛАЧИВАНИЯ

Номер: EA0000002674B1
Принадлежит: БУЛИДЕН МИНЕРАЛ АБ (SE)

... 1. Способ очистки полученного в результате гидрометаллургической обработки материала кислотного выщелачивающего раствора, который включает ценные металлы и который в дополнение к таким ценным металлам включает также Fе3+, Fе2+и возможно также мышьяк в растворе, отличающийся тем, что в этот выщелачивающий раствор на первой стадии добавляют средство повышения рН с тем, чтобы осадить основную часть его компонента Fe3+ и содержащегося в нем мышьяка, выделяют осадок, образующийся на первой стадии из раствора, и удаляют этот осадок из процесса, в раствор на второй стадии добавляют дополнительное количество повышающего рН средства с тем, чтобы окислить Fe2+и осадить образующийся Fe3+ и возможно весь остающийся мышьяк, из раствора выделяют образующийся осадок и все остаточное твердое средство повышения рН и возвращают его в процесс в более кислых условиях и после этого по известному методу извлекают ценный металлический компонент очищенного таким путем раствора. 2. Способ по п.1, отличающийся тем ...

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31-10-2002 дата публикации

СПОСОБ ПОЛНОГО ОСАЖДЕНИЯ ЦЕННЫХ МЕТАЛЛОВ ИЗ КИСЛОТНОГО ВЫЩЕЛАЧИВАЮЩЕГО РАСТВОРА

Номер: EA0000002802B1
Принадлежит: БУЛИДЕН МИНЕРАЛ АБ (SE)

... 1. Способ полного осаждения ценных металлов из выщелачивающего раствора, который подкислен серной кислотой и который практически свободен от примесей, путем нейтрализации известью и/или известняком, отличающийся тем, что нейтрализацию проводят, по меньшей мере, в две стадии, благодаря чему на первой стадии осуществляют только частичное осаждение и благодаря чему полное осаждение остающегося ценного металлического компонента осуществляют на последней стадии добавлением избытка нейтрализующего агента, шлам осадков и остающегося твердого нейтрализующего агента, образующийся в процессе нейтрализации на последней стадии, возвращают на первую стадию нейтрализации необязательно после повторного растворения этого шлама в поступающем кислотном выщелачивающем растворе, где количество шлама, возвращаемого совместно с возможной дополнительной добавкой нейтрализующего агента, управляет частичным осаждением ценного металлического компонента, и после обезвоживания осадка гидроксида металла/гипса, образующегося ...

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28-04-2005 дата публикации

СПОСОБ УДАЛЕНИЯ КАЛЬЦИЯ ИЗ СУЛЬФАТНОГО РАСТВОРА ПРОЦЕССА ПОЛУЧЕНИЯ ЦИНКА

Номер: EA0000005566B1
Принадлежит: ОУТОКУМПУ ОЙЙ (FI)

Настоящее изобретение относится к способу удаления кальция из сульфатного раствора процесса производства цинка. Кальций удаляют в виде ангидрита из неочищенного раствора, выходящего со стадии выщелачивания концентрата или руды, перед проведением стадий очистки раствора.

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23-04-2001 дата публикации

METHOD FOR TOTAL PRECIPITATION OF VALUABLE METALS FROM AN ACID LEACHING SOLUTION

Номер: EA0200000543A3
Принадлежит:

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14-11-2012 дата публикации

Reactor and a method of purifying a process solution

Номер: CN102781566A
Принадлежит:

The invention relates to a method and a reactor for purifying solid matter from the process solution (2) in the fluidized bed in the reactor, into which the process solution is fed to form the fluidized bed (4) in the essentially cylindrical reaction part (3) that is the lowermost part in the reactor, from which bed the flow further moves to the calming part (5) that expands conically upwards from the upper part of the reactor part and, further, to the cylindrical clarification part (6) that is connected to the upper part of the same, the diameter of the clarification part being the same as the upper part of the calming part, whereby at least part of the solution (2) that is fed into the reactor (1) is circulated to the fluidized bed (3) more than once, and that the amount of circulating solution is controlled in the fluidized bed by means of the mixing member (12) placed in the reactor.

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17-03-1967 дата публикации

Process of separation of the iron of metal sulphate solutions and hydrometallurgic process for the production of zinc

Номер: FR0001464869A
Автор:
Принадлежит:

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04-02-1909 дата публикации

Improvements in the separation of zinc ores or combinations thereof

Номер: FR0000394867A
Автор:
Принадлежит:

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08-01-1912 дата публикации

Improvements relating to the metal salt deposit of the solutions which contain them

Номер: FR0000433477A
Автор:
Принадлежит:

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04-10-1974 дата публикации

METHOD OF PURIFYING ZINC SULPHATE SOLUTIONS

Номер: FR0002184570B1
Автор:
Принадлежит:

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31-01-2013 дата публикации

Method for leaching zinc from a zinc ore

Номер: US20130025412A1
Принадлежит: Metaleach Ltd

A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300° C. and about 900° C. thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous zinc solution to a zinc recovery step.

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01-08-2013 дата публикации

Method for treating a solution containing zinc sulphate

Номер: US20130192424A1
Принадлежит: OUTOTEC OYJ

The invention relates to a method for treating a solution containing zinc sulphate, so that at least one of the rare metals such as indium, gallium and germanium can be separated from it. A portion of the metals to be separated can be precipitated from zinc sulphate solution by neutralizing the acidic solution and at least a portion is cemented by means of metal powder. The solid precipitates that are formed can be combined and treated subsequently in some suitable way to leach out the desired metals.

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17-04-2014 дата публикации

Precipitation of Zinc from Solution

Номер: US20140105797A1
Автор: Voigt Paul Benjamin
Принадлежит: Glencore Queensland Limited

A method of precipitating a zinc containing solid from an acidic solution containing dissolved zinc and magnesium comprising contacting the solution with a calcium containing neutralising agent to raise the pH of the solution to 4.5 to 7.5 at a temperature of from 70 to 95° C. to thereby precipitate a solid zinc containing material and gypsum without causing substantial precipitation of magnesium, and separating the zinc containing material from the gypsum. 1. A method of precipitating a zinc containing solid from an acidic solution containing dissolved zinc and dissolved magnesium comprising contacting the solution with a calcium containing neutralising agent to raise the pH of the solution to 4.5 to 7.5 at a temperature of from 70 to 95° C. to thereby precipitate a solid zinc containing material and gypsum without causing substantial precipitation of magnesium , and separating the zinc containing material from the gypsum.2. A method as claimed in wherein the method comprises contacting the solution with a calcium containing neutralising agent to raise the pH of the solution to 5.5 to 7.5 at a temperature of from 70 to 95° C. to thereby precipitate a solid zinc containing material and gypsum without causing substantial precipitation of magnesium claim 1 , and separating the zinc containing material from the gypsum.3. A method as claimed in wherein the calcium containing neutralising agent is selected from lime (CaO) or hydrated lime (Ca(OH)) and zinc in solution is precipitated in the form of zinc oxide.4. A method as claimed in or wherein zinc in solution is precipitated as zinc oxide and the process involves a precipitation step that is operated at a pH from 5.5-6.5 claim 2 , preferably about 6.5 claim 2 , and an operating temperature of from 70 to 95° C. claim 2 , preferably about 90° C.5. A method as claimed in wherein the method comprises contacting the solution with a calcium containing neutralising agent to raise the pH of the solution to 4.5 to 6.5 claim 1 ...

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28-01-2021 дата публикации

Method for inhibiting extractant degradation of dsx process through metal extraction control

Номер: US20210024367A1
Принадлежит: Korea Resources Corp

Provided is a method for inhibiting extractant degradation in the DSX process through the metal extraction control, the method comprising steps of: (a) adding limestone to a copper solvent extraction-raffinate to precipitate iron (Fe) and aluminum (Al) as a slurry, recovering a clarifying liquid; and (b) adding sulfuric acid to the recovered clarifying liquid to adjust the pH thereof.

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28-01-2021 дата публикации

Method of inhibiting extractant degradation by controlling extractive capacity and preventing direct degradation

Номер: US20210024369A1
Принадлежит: Korea Resources Corp

Provided is a method for inhibiting extractant degradation comprising preparing step, extracting step and scrubbing step, the method including: (a) the preparing step of a DSX solvent by adjusting the extractant concentration of the DSX solvent to a specific range; (b) the extracting step of metal included in the feed solution by adjusting the ratio of the organic (solvent) and an aqueous (solution) as a feed solution; (c) the scrubbing step of adjusting the zinc concentration of the solution using zinc sulfate; and (d) stripping step.

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30-01-2020 дата публикации

METHOD FOR REMOVING FLUORIDE FROM A ZINC-CONTAINING SOLUTION OR SUSPENSION, DEFLUORIDATED ZINC SULFATE SOLUTION AND USE THEREOF, AND METHOD FOR PRODUCING ZINC AND HYDROGEN FLUORIDE OR HYDROFLUORIC ACID

Номер: US20200032371A1
Принадлежит:

Embodiments of the invention relate to a process for removing fluoride from a solution or suspension containing zinc, in particular a solution of zinc sulfate, a defluoridated solution of zinc sulfate obtainable by such a process, its use as well as processes for producing zinc and hydrogen fluoride or hydrofluoric acid. The process for removing fluoride comprises (i) providing a solution or suspension A containing zinc, wherein the solution or suspension A containing zinc further contains fluoride ions; (ii) adding a solution B containing a dissolved salt of a rare earth element to the solution or suspension A containing zinc, wherein a solid comprising a rare earth element fluoride and a solution C containing zinc are formed; and (iii) separating the solid from the solution C containing zinc, wherein the solution C containing zinc has a lower concentration of fluoride ions than the solution or suspension A containing zinc. 115.-. (canceled)17. The process according to claim 16 , wherein the solution or suspension A containing zinc is formed by at least partly dissolving a composition containing zinc oxide claim 16 , in particular waelz oxide claim 16 , wherein the composition containing zinc oxide is at least partly dissolved to form the solution or suspension A containing zinc.18. The process according to claim 16 , wherein the solution B contains a dissolved sulfate of a rare earth element.19. The process according to claim 16 , wherein the rare earth element is selected from the group consisting of lanthanum (La) claim 16 , cerium (Ce) claim 16 , praseodymium (Pr) and neodymium (Nd).20. The process according to claim 16 , wherein in step (ii) an amount of substance of the dissolved salt of a rare earth element is added claim 16 , the amount being adapted to an estimated or previously determined amount of substance of fluoride ions in the solution or suspension A containing zinc.21. The process according to claim 16 , wherein claim 16 , after adding the solution ...

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01-05-2014 дата публикации

METHOD FOR SELECTIVE PRECIPITATION OF IRON, ARSENIC AND ANTIMONY

Номер: US20140120012A1
Принадлежит: NICHROMET EXTRACTION INC.

A method for selectively processing a polymetallic oxide solution containing a plurality of base metals comprising at least one of: Cu, Co, Ni, Zn associated with iron, comprising acid leaching the solution; recovering a filtered leachate; oxidizing the leachate; and adjusting the pH of the leachate in presence of a complexing agent; wherein the acidic solution is one of: i) a hydrochloric acid solution and ii) a sulfuric acid solution at a pH lower than about 1.5, and the complexing agent is one of: i) ammonium chloride and ii) ammonium sulfate, the step of adjusting the pH comprising raising the pH to a range between about 2.5 and about 3.5. 1. A method for separation of contaminants comprising at least one of: iron , arsenic and antimony , from an acidic solution of base metals comprising at least one of: cobalt , nickel , copper and zinc , and at least one of: iron , arsenic and antimony , comprising a preliminary oxidation of the contaminants , a selective precipitation of the contaminants by addition of an ammonium salt in a stoichiometric amount followed by a pH adjustment , and recovery of the base metals in solution.2. The method of claim 1 , wherein the acidic solution of base metals is one of: a hydrochloric acid solution and a sulfuric acid solution.3. The method of claim 1 , wherein the acidic solution of base metals has a pH in a range between about 0.5 and about 1.5.4. (canceled)5. The method of claim 1 , wherein the ammonium salt is one of: ammonium sulfate and ammonium chloride.6. The method of claim 1 , wherein said pH adjustment comprises adjusting the pH a value in a range between about 2.5 and about 3.5.7. The method of claim 1 , wherein said pH adjustment comprises adjusting the pH to a value in a range between about 2.8 and about 3.2.8. The method of claim 1 , wherein said pH adjustment comprises raising the pH of the acidic solution using one of:ammonium hydroxide, ammonia, calcium hydroxide, sodium hydroxide and magnesium hydroxide.9. The ...

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01-05-2014 дата публикации

PROCESS FOR REMOVAL OF ZINC, IRON AND NICKEL FROM SPENT COMPLETION BRINES AND PRODUCED WATER

Номер: US20140121138A1
Принадлежит: BAKER HUGHES INCORPORATED

Zinc, nickel and iron can be recovered from spent brines and produced water using a method that includes admixing an aqueous fluid with hydrazine to form a hydrazine complex and then filtering or otherwise removing the hydrazine complex from the aqueous fluid. Once treated, the aqueous fluid can then be recycled or at be the subject to an easier disposal. The isolated metal hydrazine complex may be recycled or discarded. 1. A method for recovering zinc metal , nickel metal , iron metal , zinc cations , nickel cations or iron cations from fluids produced from an oil well , the method comprising admixing an aqueous fluid produced from an oil well with hydrazine under conditions sufficient to produce an insoluble zinc or nickel hydrazine complex and removing the insoluble zinc or nickel hydrazine complex from the fluid.2. The method of wherein the hydrazine is employed as an aqueous solution having a hydrazine concentration of from about 10% to about 50%.3. The method of wherein the hydrazine is employed as an aqueous solution having a hydrazine concentration of from about 20% to about 40%.4. The method of wherein the hydrazine is employed as an aqueous solution having a hydrazine concentration of about 35%.5. The method of wherein the molar ratios of hydrazine to zinc claim 1 , nickel claim 1 , or iron necessary to form an insoluble complex is from about one to about three moles of hydrazine to about one mole of zinc claim 1 , nickel claim 1 , or iron.6. The method of wherein the molar ratios of hydrazine to zinc claim 5 , nickel claim 5 , or iron necessary to form an insoluble complex is from about one to about two moles of hydrazine to about one mole of zinc claim 5 , nickel claim 5 , or iron.7. The method of wherein the insoluble zinc claim 1 , nickel claim 1 , or iron hydrazine complex is removed from the fluid by filtering.8. The method of wherein the insoluble zinc claim 1 , nickel claim 1 , or iron hydrazine complex is removed from the fluid by centrifugation.9 ...

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04-03-2021 дата публикации

Method of inhibiting degradation of dsx extractant by auxiliary means

Номер: US20210062293A1
Принадлежит: Korea Resources Corp

A method of inhibiting degradation of an extractant by utilizing several auxiliary means in the DSX process: includes (a) preparing adjustment of the concentration of an extractant of a DSX solvent to a certain range; (b) extracting a metal contained in a pregnant leached solution by adjusting the ratio of the extractant and the diluent in the DSX solvent to a certain range; (c) measuring the pH of the aqueous phase solution by separating mixture into the aqueous phase solution and the organic phase solvent using a settler after step of extracting; (d) controlling the pH by adding soda ash (Na 2 CO 3 ) so as to maintain the pH of the aqueous phase solution to be 3 to 7; and (e) scrubbing with scrubbing solution having a zinc concentration of 2 to 20 g/L by zinc sulfate (ZnSO 4 ) to remove the manganese from the organic phase solvent containing the extracted metal.

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19-05-2016 дата публикации

ZINC PRODUCTION METHOD

Номер: US20160138130A1
Автор: Iosaki Masaaki, Mori Shuji
Принадлежит: Kinotech Solar Energy Corporation

A zinc production method includes a reaction step such as a leaching step () of bringing electric arc furnace dust () containing zinc oxide or the like into contact with a chlorine gas () to obtain a zinc oxide component in the electric arc furnace dust () or the like as crude zinc chloride (), a purification step () of heating the crude zinc chloride () obtained at the reaction step to produce zinc chloride vapor, and cooling and condensing the zinc chloride vapor, thereby obtaining purified zinc chloride (), and an electrolysis step () of electrolyzing the purified zinc chloride () obtained at the purification step () in a molten state to obtain a zinc melt () and the chlorine gas (). 1. A zinc production method comprising:a reaction step of obtaining crude zinc chloride from a zinc oxide component in electric arc furnace dust containing zinc oxide or in secondary dust generated at a time of reducing the electric arc furnace dust in a reduction furnace;a purification step of heating the crude zinc chloride obtained at the reaction step to produce zinc chloride vapor, and cooling and condensing the zinc chloride vapor, thereby obtaining purified zinc chloride; andan electrolysis step of electrolyzing the purified zinc chloride obtained at the purification step in a molten state to obtain a zinc melt and a chlorine gas.2. The zinc production method according to claim 1 , wherein the reaction step is a leaching step of bringing the electric arc furnace dust or the secondary dust into contact with a chlorine gas to extract a zinc oxide component in the electric arc furnace dust or in the secondary dust as crude zinc chloride.3. The zinc production method according to claim 2 , wherein at the leaching step claim 2 , the electric arc furnace dust or the secondary dust is brought into contact with the chlorine gas obtained by electrolysis at the electrolysis step.4. The zinc production method according to claim 2 , wherein the purification step includesa first ...

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15-06-2017 дата публикации

METHOD FOR RECYCLING VALUABLE METALS FROM SPENT BATTERIES

Номер: US20170170532A1
Принадлежит:

A process has been developed in order to recover and recycle the metals present in spent batteries, including alkaline spent batteries alone or mixed with other types of spent batteries. This method shows a good potential in terms of metals recoveries efficiencies and economic feasibility. Firstly, the spent batteries are crushed (optionally after having been frozen in the case of spent batteries of mixed types). Then, the undesirable parts (plastics, steel cases, papers, etc.) are removed by screening. The collected powder, containing the metals, is mixed with a solution of sulfuric acid in the presence of a reducing agent. The solid/liquid separation is carried out by filtration and the leachate is purified in order to selectively recover the metals. The purification steps consist of: a) recovering Zn by solvent extraction followed by an electrowinning process; b) simultaneously recovering Mn and Cd by solvent extraction process; c) selectively recovering Cd from the mixture solution of Cd and Mn by electrowinning process; d) precipitating Mn from a pure solution of MnSOin a carbonate form; e) removing the impurities present in the effluent by solvent extraction in order to obtain a pure NiSOsolution; f) precipitating Ni from a NiSOsolution in a carbonate form. 1. A process for recovering valuable metals from spent batteries comprising the steps of:a) crushing the spent batteries;b) separating debris as a coarse fraction and a fine fraction;c) leaching metals present in the fine fraction with strong inorganic acid and a reducing agent to produce an aqueous leachate;d) extracting Zn from the leachate by electrowinning to obtain a metallic deposit of Zn and a Zn-depleted aqueous solution; ande) extracting Mn from the Zn-depleted aqueous solution of d) by precipitation at pH of about 8-9 to obtain precipitated Mn and a Zn- and Mn-depleted aqueous solution.2. The process of claim 1 , wherein in the leaching step c) claim 1 , the strong inorganic acid is selected from ...

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17-09-2015 дата публикации

DECOATING OF COATED MATERIALS

Номер: US20150259766A1
Принадлежит:

A system and method for decoating a scrap coated metal in a leach solution uses direct measuring of the corrosion potential of the scrap metal in the system to determine the progress of the decoating process and end the process when the scrap is decoated. Corrosion potential measurements are made using a working electrode comprising more than one piece of scrap coated-metal within the system. The decoating system and method may include a system for recycling leach solution. 1. A system for decoating coated metals comprising:a reaction vessel, comprising a tank with a plurality of inlets and outlets; the tank in fluid communication witha reagent recovery unit, wherein the reagent recovery unit comprises an ionic dialysis membrane;a volt meter;a reference electrode; anda lead for working electrode.2. The system of claim 1 , wherein the metal comprises iron and the coating comprises zinc.3. The system of claim 2 , wherein the metal is steel.4. The system of claim 1 , wherein the reference electrode is an Ag/AgCl electrode.5. The system of claim 1 , wherein the working electrode is a conductive containment cage of corrosion resistant metal.6. The system of claim 5 , wherein the containment cage is in electrical communication with a scrap metal positioned within the cage.7. The system of claim 1 , wherein the working electrode is positioned within a containment cage.8. The system of claim 7 , wherein the containment cage comprises a corrosion resistant metal.9. The system of claim 8 , wherein the corrosion resistant metal is coated.10. The system of claim 9 , wherein the corrosion resistant metal is coated with a fluorine based plastic.11. The system of claim 10 , wherein the fluorine based plastic is ethylene tetrafluoroethylene claim 10 , ETFE.12. A method for decoating coated metals comprising:placing a scrap metal with a coating layer in containment cage;immersing the coated scrap in an acidic leach solution in a reaction vessel;allowing the coating layer to react ...

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22-12-2016 дата публикации

METHOD FOR RECOVERY OF COPPER AND ZINC

Номер: US20160369417A1
Принадлежит: OUTOTEC (FINLAND) OY

The present invention provides a method of recovering copper and zinc from an aqueous sulfate and chloride containing solution. In the first process step zinc and copper are simultaneous extracting with an extraction solution comprising a liquid chelating cation exchanger and a liquid anion exchanger. The extraction is followed by consecutive stripping stages. First the anionic species are washed from the organic phase with one or more aqueous solutions and finally the copper is stripped with an aqueous acidic solution. 1. A method of recovering copper and zinc from an aqueous sulfate and chloride containing solution , comprising the steps of:(a) providing an aqueous sulfate and chloride containing solution comprising copper and zinc;(b) extracting the aqueous sulfate and chloride containing solution with an extraction solution comprising a liquid chelating cation exchanger and a liquid anion exchanger to obtain a loaded organic phase comprising zinc and copper and a first aqueous phase;(c) washing zinc from the loaded organic phase with an aqueous solution to obtain a zinc-depleted organic phase and zinc and chloride containing second aqueous phase;(d) stripping copper from the zinc-depleted organic phase with an aqueous acidic solution to obtain a zinc and copper depleted organic phase and a copper-containing third aqueous phase;(e) recovering zinc from the zinc and chloride containing second aqueous phase and recovering copper from the copper containing third aqueous phase.2. The method as claimed in claim 1 , wherein the chloride concentration of the aqueous sulfate and chloride containing solution comprising copper and zinc is from 1 to 175 g/L.3. The method as claimed in claim 1 , wherein the sulfate concentration of the aqueous sulfate and chloride containing solution comprising copper and zinc is from 40 to 300 g/L.4. The method as claimed in claim 1 , wherein the liquid chelating cation exchanger is hydroxyoxime.5. The method as claimed in claim 4 , wherein ...

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11-01-2002 дата публикации

CEMENTING PROCESS, REACTOR FOR CARRYING OUT SAID METHOD AND INSTALLATION COMPRISING SUCH A REACTOR

Номер: FR2793811B1
Автор: [UNK]
Принадлежит: R V X

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24-11-2000 дата публикации

Metal cementation process for metal-containing solution purification comprises ultrasonic treatment of fluidized bed of cementing particles and metal-containing solution

Номер: FR2793811A1
Автор: [UNK]
Принадлежит: R V X

A metal cementation process comprises forming a fluidized bed of the cementing particles and subjecting a metal-containing solution and the particles (20) to ultrasound over a substantial portion of the active fluidized bed height. Independent claims are also included for: (i) a cementation reactor having a reaction zone equipped with a system (12) for creating a fluidized bed (LF) of the cementing particles (20) and an ultrasound generating system (24) extending over a substantial portion of the fluidized bed creation system (12); and (ii) a metal solution purification installation comprising the above cementation reactor (8) connected to a solution source (2) and a separation unit (18) for separating the cement (30) from the purified solution.

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21-09-1976 дата публикации

Zinc recovery from acidic aqueous streams

Номер: US3981966A
Автор: Everett Ira Baucom
Принадлежит: EI Du Pont de Nemours and Co

A process for the recovery of metal values, principally zinc and copper, from an aqueous acidic purge stream in a hydrometallurgical process by contacting the stream containing the iron, copper and zinc sulfates, along with trace amounts of other metallic sulfates with calcium oxide to bring the pH in the range 3.0-4.0, thence with sufficient ammonia to form the soluble tetrammine sulfates of copper and zinc, then separating the copper from the zinc, e.g. by hydroxy oxime-solvent extraction and thereafter recovering the zinc as zinc oxide by converting the zinc tetrammine sulfate to the hydroxide and removing ammonia from the complex.

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12-02-2021 дата публикации

Method for removing and recovering fluorine and chlorine from zinc sulfate solution

Номер: CN112357950A

本发明公开了一种从硫酸锌溶液中脱除及回收氟氯的方法,包括吸附、树脂再生、解析液再生和氟氯回收利用步骤,具体包括:将含氟氯硫酸锌溶液自下而上依次经离子交换柱后得到负载氟氯的树脂a,用硫酸溶液进行逆流解吸得到解析后液c,经蒸馏获得再生解析液d和HF、HCl混合气体,经冷凝获得氢氟酸产品,剩余的HCl气体经水吸收获得盐酸产品,实现了氟氯的分别回收利用;本发明的工艺简单,解吸液的循环使用,解决了离子交换解吸液用量大、废水量大的难题并实现氟氯杂质制备氢氟酸和盐酸产品,氟氯脱除效率高、生产成本低、绿色环保、过程无三废产生,易于和锌冶炼系统衔接,具有工业化生产推广应用价值。

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02-12-2004 дата публикации

Zinc recovery process

Номер: US20040237720A1
Автор: Frank Houllis, John Moyes
Принадлежит: Intec Ltd

A process for the recovery of zinc metal from a zinc mineral includes the steps of leaching the zinc mineral in a solution including a halide species formed from two or more different halides, to leach the zinc into the solution. The zinc-bearing solution is then electrolysed to yield zinc metal and to generate the halide species. The electrolysed solution including the halide species is then returned to the leaching step. A portion of the electrolysed solution can be removed as a bleed stream from a cathode compartment of an electrolytic cell of the electrolysis process and processed to remove manganese as manganese dioxide precipitate by adding thereto limestone, and the halide species from an anode compartment of the electrolysis process. In this regard, the pH and Eh of the solution can regulated in a manner that favours the formation of the manganese dioxide precipitate over the formation of a precipitate of zinc.

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03-05-2007 дата публикации

Hydrometallurgical process for the treatment of metal-bearing sulfide mineral concentrates

Номер: US20070098609A1
Автор: Brian McConnell
Принадлежит: McConnell Brian

A hydrometallurgical process for the treatment of complex silver-bearing sulfide ores and concentrates that recovers substantially all silver, lead, antimony, zinc, copper and sulfur, along with the chemical reagents utilized during the process. Finely ground ores and concentrates are leached under heat and pressure with water, sulfuric acid, nitric acid, oxygen, and a catalyst, and are further treated to recover silver in the form of silver chloride; iron in the form of iron hydroxide; copper and all traces of soluble toxic metals as sulfides; zinc as zinc ammonium sulfate and specifically nitric acid, sulfuric acid, oxygen, ammonia, and ammonium compounds as valuable fertilizer products.

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21-02-2008 дата публикации

A process for the treatment of electric and other furnace dusts and residues containing zinc oxides and zinc ferrites

Номер: KR20080016607A

본 발명은 특정양의 가열로 분제를 회수하는 방법으로서 다음의 스텝로 구성된다. 첫 여과 스텝에는 그 가열로의 분제가 대기압에서, 그리고 그 첫 여과용액 내에서 여과되며, 이는 첫 여과 분비액과 첫 여과 잔재물을 생산하기 위함이며, 그 첫 여과 용액은 수성 미네랄 산성 용액으로 이루어진다. 그 첫 여과 분비액은, 그 후 첫 여과 잔재물로부터 분리된다. 그리고서 두 번째 여과 스텝은 두 번째 여과 분비액과 두 번째 여과 잔재물을 형성하기 위한 두 번째 여과 용액 내에서 그 첫 번째 잔재물은 대기적으로 여과되는데, 그 두 번째 여과 용액은 수성 환원제를 가진 수성 HCl 용액으로 이루어진다. 두 번째 여과 분비액은, 그 후 두 번째 여과 잔재물로부터 분리된다. 아연 침강 스텝이 그 후 실행되는데, 그때 세 번째 잔재물 내에서 소금의 형태로 된 아연을 침강시키기 에 충분한 두 번째 여과 분비액의 pH를 조절하기 위해 선정된 특정 양의 알칼리는 세 번째 분비액을 떠나서 네번째 분비액으로부터 아연을 함유 세 번째 잔재물을 분리한다

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22-09-2017 дата публикации

The technique that a kind of Whote-wet method reclaims valuable element in complicated low-grade sulphide ore

Номер: CN107190143A
Принадлежит: Jiangxi Copper Corp

一种全湿法回收复杂低品位硫化矿中有价元素的工艺,工艺为:将原料破碎研磨后过筛,用氢氧化钠溶液调浆后进行加压氧化浸出,得碱浸液和碱浸渣;碱浸液酸化得硫酸铅产品和沉铅液,沉铅液分步控制电位还原得粗硒粉、粗碲粉和还原后液;碱浸渣用硫酸溶液浸铜,得浸铜渣和浸铜液;浸铜渣用含氯离子酸性液浸锑铋,得浸锑液和浸锑渣,浸锑渣送贵金属回收,浸锑液分步调节pH得锑渣和铋渣;浸铜液调节pH得铁渣和除铁液,铁渣为废水处理添加剂,除铁液用锌粉置换得铜粉和置换后液;还原后液和置换后液合并,浓缩结晶得七水硫酸锌。本发明工艺综合回收效果好,对原料适应性强,过程清洁环保,对设备要求低,实施规模大小可调,具有较强的实用性。

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10-10-2001 дата публикации

Nickel and/or cobalt recovery method (options)

Номер: RU2174562C2

FIELD: nonferrous metallurgy. SUBSTANCE: method involves ore or concentrate oxidation stage performed at pressure in presence of oxygen and acidic solution containing halide, copper, and sulfate ions to form nickel- and cobalt-containing lye from oxidation product suspension. Lye is treated by selective precipitation to give solid product containing nickel and cobalt hydroxide. Nickel and cobalt are leached out of solid product with ammonia solution into nickel- and cobalt-containing solution. The two metals are then separated from each other by extraction with solvent. Nickel and cobalt are isolated from their solutions electrochemically. Precious metals and other metals such as copper are recovered in similar manner. EFFECT: reduced operational and energetic expenses. 73 cl, 5 dwg, 1 tbl, 2 ex СЭЧЗУДЬЕС ПЧ с» РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК” ВИ `” 2 174 562 С 22В 2300 (13) С2 (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98100271/02, 07.06.1996 (24) Дата начала действия патента: 07.06.1996 (30) Приоритет: 07.06.1995 Ц$ 08/488,128 (43) Дата публикации заявки: 27.10.1999 (46) Дата публикации: 10.10.2001 (56) Ссылки: Ч$ 3761566, 25.09.1970. СМИРНОВ В.И. и др. Металлургия меди, никеля и кобальта, ч.1. - М.: Металлургия, 1966, С.214-221. Ц$ 4600435, 15.07.1986. $Ч 263926, 25.10.1977. $0 531881, 08.10.1976. 0$ 4451819, 03.07.1984. СВ 2018132 А, 24.10.1979. ЕР 0209272 АЛ, 21.01.1987 0$ 3981968, 21.09.1976. ($ 4971662, 20.11.1990. 0$ 4039406, 02.08.1977. (85) Дата перевода заявки РСТ на национальную фазу: 08.01.1998 (86) Заявка РСТ: СА 96/00365 (07.06.1996) (87) Публикация РСТ: М/О 96/41029 (19.12.1996) (98) Адрес для переписки: 103055, Москва, а/я 11, Попеленскому Н.К. (71) (72) (73) (74) Заявитель: Коминко Енджиниэринг Сэвисиз Элтиди (СА) Изобретатель: ДЖОУНС Дэвид Л. (СА) Патентообладатель: Коминко Енджиниэринг Сэвисиз Элтиди (СА) Патентный поверенный: Попеленский Николай Константинович (54) СПОСОБ ...

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07-08-2020 дата публикации

Process for deeply purifying and decontaminating zinc leachate by wet method

Номер: CN111254283B

本发明公开了一种湿法锌浸出液深度净化除杂的工艺,该工艺是采用硫化锌溶液对湿法锌浸出液进行深度净化除杂,其中硫化锌溶液是以净化除杂后含有硫酸锌的净化后液、硫化钡为原料经复分解反应后制备得到,硫化钡由硫酸钡经还原反应后制备得到。本发明工艺,以硫化锌溶液作为除杂药剂处理待净化的锌浸出溶液,通过利用硫化锌释放出的硫离子与锌浸出溶液中Cu、Cd、As等重金属离子发生硫化反应以沉淀形式析出,实现锌液的净化除杂,具有处理成本低、绿色环保、锌损失率低、净化效果好的等优点,能够实现对湿法锌浸出液的深度净化除杂,是一种低成本、高效、能够彻底净化湿法锌浸出液的新型除杂工艺,有着好高的使用价值和很好的应用前景。

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16-06-2020 дата публикации

Method for separating and purifying lead, zinc, cadmium and copper based on ammonium complex system

Номер: CN111286609A

本发明提供了一种基于铵络体系的铅锌镉铜分离和纯化的方法,所述方法包括以下步骤:(1)使用浸出液对含锌原料进行浸出,得到浸出后液;(2)对步骤(1)得到的浸出后液进行过滤处理,得到滤液和滤渣;(3)将步骤(2)得到的滤液与金属铅混合置换出铜,固液分离后得到第一分离液;将所述第一分离液与金属镉混合置换出铅,固液分离后得到第二分离液;将所述第二分离液与金属锌混合置换出镉,固液分离得到第三分离液;(4)对步骤(3)得到的第三分离液进行电解,得到金属锌,电解后的电解液返回步骤(1)对含锌原料进行浸出。所述方法使用自身产出的铅和镉,实现自产自用,降低生产成本。

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15-12-2004 дата публикации

Reduction of zinc oxide from complex sulfide concentrates using chloride processing

Номер: CN1555422A
Принадлежит: Noranda Inc

本发明提供一种从含锌材料中制备氧化锌的设备及其方法。该方法包括如下步骤:利用盐酸、氯化铁及氧气沥滤复合硫化物材料、利用石灰及氧气从沥滤液中沉淀铁、通过锌粉置换沉淀而从沥滤液中去除铜、银、镉、钴和铅、利用石灰从沥滤液中沉淀氧化锌的步骤、从氯化钙沥滤液中再生HCl以便再生盐酸和石膏沉淀物。此外,本发明还提供了通过溶解氯化铅并用石膏沉淀、从复合硫化物材料中回收铜、银、铅和铁的相关方法。

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19-04-2006 дата публикации

Reduction of zinc oxide from complex sulfide concentrates using chloride processing

Номер: CN1252293C
Принадлежит: Noranda Inc

本发明提供一种从含锌材料中制备氧化锌的设备及其方法。该方法包括如下步骤:利用盐酸、氯化铁及氧气沥滤复合硫化物材料、利用石灰及氧气从沥滤液中沉淀铁、通过锌粉置换沉淀而从沥滤液中去除铜、银、镉、钴和铅、利用石灰从沥滤液中沉淀氧化锌的步骤、从氯化钙沥滤液中再生HCl以便再生盐酸和石膏沉淀物。此外,本发明还提供了通过溶解氯化铅并用石膏沉淀、从复合硫化物材料中回收铜、银、铅和铁的相关方法。

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02-02-2021 дата публикации

Method for removing magnesium ions from zinc electrolyte

Номер: CN112301381A

本发明涉及一种从锌电解液中脱除镁离子的方法,属于化工冶金技术领域。具体方法为:先将氟化镁晶种、四水合氟化锌、分散剂A加入反应釜用生产水或镁渣洗水充分浆化0.5h以上升温至40‑80℃,在搅拌条件下将锌电解液匀速加入浆化液中,控制反应温度恒温,锌电解液加完之后恒温搅拌陈化,溶液高温过滤,镁渣用生产水进行逆流洗涤,脱镁硫酸锌溶液加入硫酸钙脱除残氟,反应结束之后进行液固分离,溶液用于锌电解生产,滤渣为氟化钙渣。本发明脱镁效率高,可以将锌电解液中镁离子由20g/L以上脱除至3g/L以上,提高电解液的纯度,生成的氟化镁渣过滤性能良好,工艺简单,易于实现工业化生产。

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28-01-2011 дата публикации

A process for the treatment of electric and other furnace dusts and residues containing zinc oxides and zinc ferrites

Номер: KR101011382B1

본 발명은 다량의 가열로 분진을 회수하는 방법으로서 다음의 단계로 구성된다. 제1 단계 침출에서, 상기 가열로의 분진이 제1 침출액과 제1 침출 잔류물을 생성하기 위하여 제1 침출 용액 중에서, 대기압에서 침출되며, 상기 제1 침출 용액은 수성 미네랄 산성 용액으로 이루어지며, 제1 침출 후에 상기 제1침출액을 상기 제1 침출 잔류물로부터 분리한다. 제2침출 단계에서, 상기 제1 잔류물이 제2 침출액과 제2 침출 잔류물을 생성하기 위해 제2 침출 용액에서 대기압에서 침출되고, 상기 제2 침출 용액은 환원제를 가진 수성HCl 용액으로 구성되며, 제2 침출 후에 상기 제2 침출액을 상기 제2 침출 잔류물로부터 분리한다. 아연 침전 단계에서, 다량의 알칼리를 이용하여 상기 제2 침출액을 처리함으로서 아연이 상기 제2 침출액으로부터 침전되며, 상기 다량의 알칼리는, 제3 침출액을 남기는 제3 잔류물로 아연염의 형태로 아연을 충분히 침전시킬 수 있도록 제2 침출액의 pH를 조절하도록 선택되고, 이후 상기 제3 침출액으로부터 아연을 함유한 상기 제3 잔류물을 분리한다. 전기로, 가열로, 분진, 유가금속, 아연산화물, 페라이트 The present invention consists of the following steps as a method of recovering dust with a large amount of heating. In the first stage leaching, the dust of the furnace is leached at atmospheric pressure, in a first leaching solution, to produce a first leaching solution and a first leaching residue, the first leaching solution consisting of an aqueous mineral acidic solution, After the first leaching, the first leachate is separated from the first leach residue. In a second leaching step, the first residue is leached at atmospheric pressure in a second leach solution to produce a second leach solution and a second leach residue, and the second leach solution consists of an aqueous HCl solution with a reducing agent After the second leaching, the second leach liquor is separated from the second leach residue. In the zinc precipitation step, zinc is precipitated from the second leachate by treating the second leachate with a large amount of alkali, and the large amount of alkali forms zinc in the form of a zinc salt as a third residue leaving a third leachate. The pH of the second leachate is selected to allow sufficient precipitation, and then the third residue containing zinc is separated from the third leachate. Electric furnace, heating furnace, dust, valuable metals, zinc oxide, ferrite

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19-03-2021 дата публикации

Method for preparing battery-grade cobalt sulfate by using organic cobalt slag of zinc smelting plant

Номер: CN112522512A

本发明公开了一种利用锌冶炼厂有机钴渣制备电池级硫酸钴的方法,属于有色金属湿法冶金技术领域。该方法包括:有机钴渣经稀硫酸洗涤得洗涤液与洗涤渣,洗涤液用以回收镉粉及碳酸锌,洗涤渣通过低温焙烧得初制氧化钴原料,焙烧过程中产生的酸性气体进行吸收处理;初制氧化钴原料用硫酸加还原剂浸出得含硫酸钴的溶液,经P204萃取深度除杂后用P507萃取钴,富集得到高纯度硫酸钴溶液,经蒸发浓缩结晶得到电池级硫酸钴晶体产品。本发明能够将有机钴渣净化除杂,产出纯净的电池级硫酸钴晶体,使有机钴渣中有价金属得以充分回收利用,达到变废为宝的目的,为有色金属湿法冶金领域提供了一种新的钴原料来源,且工艺流程绿色环保,具有极高的经济及社会价值。

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10-04-2013 дата публикации

Method of producing metal products

Номер: RU2478566C2
Автор: Ашер ВИТНЕР

Способ промышленной очистки потока низкосортного поливалентного катиона с чистотой Р1 путем образования осадка двойной соли поливалентного катиона с чистотой Р2 и раствора поливалентного катиона с чистотой Р3, где Р2>Р1>Р3 включает следующие этапы: (а) образования из упомянутого потока среды, содержащей воду, поливалентный катион, катион, выбираемый из группы, состоящей из аммония, катионов щелочных металлов, протонов и любого их сочетания, и анионы, причем образовавшаяся среда далее характеризуется присутствием (i) осадка двойной соли, содержащего поливалентный катион, по меньшей мере один из упомянутых катионов и по меньшей мере один из упомянутых анионов; и (ii) раствор поливалентного катиона; в которой концентрация упомянутых анионов больше 10% и соотношение между концентрациями упомянутого катиона и упомянутого аниона в упомянутом растворе поливалентного катиона находится в пределах Зоны DS, которая определена в настоящем документе; и (b) отделения по меньшей мере части упомянутого осадка от упомянутого раствора. Техническим результатом изобретения является получение сырья для производства металлопродукта высокой чистоты. 34 з.п. ф-лы, 6 табл., 4 пр. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 478 566 (13) C2 (51) МПК C01B 13/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009140320/05, 01.05.2008 (24) Дата начала отсчета срока действия патента: 01.05.2008 (73) Патентообладатель(и): ЙОМА ИНТЕРНЭШНЛ АС (NO), АШЕР ВИТНЕР ЛТД. (IL) R U Приоритет(ы): (30) Конвенционный приоритет: 03.05.2007 IL 182,946 (72) Автор(ы): ВИТНЕР Ашер (IL) (43) Дата публикации заявки: 10.05.2011 Бюл. № 13 2 4 7 8 5 6 6 (45) Опубликовано: 10.04.2013 Бюл. № 10 (56) Список документов, цитированных в отчете о поиске: WO 2007043055 A, 19.04.2007. SU 629857 A3, 25.10.1978. SU 594046 A1, 25.02.1978. RU 2045477 C1, 10.10.1995. US 5865952 A, 02.02.1999. US 6264904 B1, 24.07.2001. 2 4 7 8 5 6 6 R U (86) Заявка PCT: IL 2008/000583 ...

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22-02-2019 дата публикации

A kind of method of chloride ion in removal solution of zinc sulfate

Номер: CN109371258A
Автор: 阳世伟
Принадлежит: CHANGNING YANJIANG ZINC INDUSTRY Co Ltd

一种去除硫酸锌溶液中氯离子的方法,包括以下步骤:向盛有硫酸锌溶液的溶液储槽中加入水合肼(水合联氨),搅拌均匀,再向溶液储槽中加入锌浸出液,加入锌浸出液后,使溶液中铜的质量与硫酸锌溶液中氯的质量之比为1.5‑6.5:1,水合肼的浓度为1.5~2.5mol/L,溶液pH值为6.0~7.5、反应温度为30‑50℃的条件下反应30min以上,待溶液储槽中沉淀完全后,过滤,得到除氯液和除氯渣。该方法通过向硫酸锌溶液中加入水合肼进行还原反应并除氯,避免了在对硫酸锌溶液除氯时引入新的杂质,且反应条件温和,除杂添加物的成本低,且氯去除率可达90%以上,操作简单,实用性强,实施成本低,便于大规模化使用。

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20-01-2005 дата публикации

Zinc recovery method

Номер: JP2005501973A
Принадлежит: インテック リミティッド

亜鉛鉱物からの亜鉛金属の回収方法は、2種以上の異なるハロゲン化物から形成されるハロゲン化物種を含有する溶液中で亜鉛鉱物を浸出し、溶液中に亜鉛を浸出する工程を含む。次いで、亜鉛含有溶液を電解し、亜鉛金属を得、ハロゲン化物種を産生する。次いで、ハロゲン化物種を含有する電解された溶液は、浸出工程に戻される。電解された溶液の一部は、電解方法の電解セルのカソード区画から流出流として取り出され、処理され、それに石灰石を加えることによって、マンガンは二酸化マンガン沈殿として除去でき、電解方法のアノード区画からハロゲン化物種を取り出し得る。この点に関し、二酸化マンガン沈殿の形成が亜鉛沈殿の形成より起こり易いように、溶液のpHとEhは制御され得る。 【選択図】図1

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30-12-1980 дата публикации

Method of purifying zinc sulfate solutions

Номер: SU793373A3
Принадлежит: Оутокумпу Ой (Фирма)

1499577 Removal of metal ions by cementation OUTOKUMPU OY 16 Sept 1975 [20 Sept 1974] 38051/75 Heading C1C A process for purifying an aqueous solution containing, as impurities, metal ions which precipitate as arsenides, comprises cementing the impurities in the aqueous solution under reducing conditions in the presence of (a) arsenic, and/or compounds thereof as auxiliary agents; (b) as catalyst, a cementate formed in a previous cementation performed in substantially the same manner. Reducing conditions may also be electrolytic. The quantity of pre-formed cementate may be 5-150 g/l of aqueous solution. The method may be used for treating raw solution from the production of zinc (e.g. removing Co, Ni, Cu, Cd).

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06-07-2016 дата публикации

Method for deeply removing cobalt from zinc sulfate leaching liquid

Номер: CN105734291A
Принадлежит: CENTRAL SOUTH UNIVERSITY

本发明公开了一种从硫酸锌浸出液中深度除钴的方法,该方法是在含钴硫酸锌溶液中加入过量的活化锌粉进行反应,反应完成后,过滤分离,即得钴含量低于0.8mg/L的硫酸锌溶液;其中,活化锌粉由含铜和/或锑、且pH为2.5~3.5的活化液活化锌粉得到;该方法能高效、低成本深度脱除硫酸锌溶液中的钴离子,而不引入危害锌电解的杂质,易于实现工业化。

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10-02-2002 дата публикации

Method of extraction of metal

Номер: RU2179192C2

Способ может быть использован для гидрометаллургической обработки металлосодержащих руд и концентратов, в частности для извлечения металлов из руд в присутствии ионов галогена. Способ предусматривает окисление руды или концентрата под давлением в присутствии кислорода и кислого раствора, содержащего ионы галогена и источник ионов бисульфата и сульфата. С использованием данного способа могут быть извлечены медь, цинк и другие металлы, такие как благородные, например золото и серебро; обеспечивается повышение степени извлечения металлов и удешевление процесса. 22 з.п. ф-лы, 5 ил., 1 табл. сбгблЬс ПЧ с» (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВЦ ”” 2 179 192 (51) МПК” (13) С2 С 22 В 3/08/С 22 В 15:00, 19:00, 23:00 (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98100309/02, 19.01.1996 (24) Дата начала действия патента: 19.01.1996 (30) Приоритет: 07.06.1995 Ц$ 08/488,128 (43) Дата публикации заявки: 27.10.1999 (46) Дата публикации: 10.02.2002 (56) Ссылки: СА 2099333, 29.12.1994. 4$ 4039406, 02.08.1977. Ц$ 4338168, 06.07.1982. 0$ 4911662, 20.11.1990. 5Ц 392127, 20.10.1973. ЗИ 7122911, 25.03.1980. ЕР 010272Ъ А, 14.03.1984. ЕК 235117, 09.12.1977. (85) Дата перевода заявки РСТ на национальную фазу: 08.01.1998 (86) Заявка РСТ: СА 96/00036 (19.01.1996) (87) Публикация РСТ: М/О 96/41027 (19.12.1996) (98) Адрес для переписки: 103055, Москва, а/я 11, Попеленскому Н.К. (71) (72) (73) (74) Заявитель: Коминко Енджиниэринг Сэвисиз Элтиди (СА) Изобретатель: ДЖОУНС Дэвид Л. (СА) Патентообладатель: Коминко Енджиниэринг Сэвисиз Элтиди (СА) Патентный поверенный: Попеленский Николай Константинович (54) СПОСОБ ИЗВЛЕЧЕНИЯ МЕТАЛЛА (57) Способ может быть использован для гидрометаллургической обработки металлосодержащих руд и концентратов, в частности для извлечения металлов из руд в присутствии ионов — галогена. Способ предусматривает окисление руды — или концентрата под давлением в присутствии кислорода и кислого раствора, содержащего ионы галогена ...

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05-02-2010 дата публикации

Method for withdrawing indium from indium-containing material

Номер: KR100940621B1

인듐 함유물로부터의 인듐 회수에 있어서, 치환 석출 공정에서 치환 석출되는 인듐스폰지가 덩어리진 상태가 아닌 분체상으로 생성되는 회수 방법을 제공한다. In the recovery of indium from an indium-containing substance, there is provided a recovery method in which the indium sponge which is substituted and precipitated in the substitution precipitation step is produced in a powder form rather than in agglomerated state. 본 회수 방법은 pH를 1~2.2의 범위로 조정한 인듐 함유액에 염소를 포함하는 물질을 첨가하고, 환원제를 더 첨가함으로써 인듐스폰지를 치환 석출시킨다.  In this recovery method, a substance containing chlorine is added to the indium-containing liquid whose pH is adjusted to be in the range of 1 to 2.2, and the indium sponge is further substituted and precipitated by further adding a reducing agent. 인듐, 인듐스폰지, 치환 석출, 환원제 Indium, Indium Sponge, Substitution Precipitation, Reducing Agent

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13-06-2017 дата публикации

A kind of Pb-Zn tailings leachate separation and concentration handling process

Номер: CN105420494B

本发明公开了一种铅锌尾矿浸出液分离富集处理工艺:包括以下步骤:(1)萃取剂的酸化;(2)浸出液的萃取:经过酸化的有机相和浸出液在相比O/A为1:1的条件下,进行六级逆流萃取,得到负载有机相和萃余液;(3)第一段反萃取:经萃取的负载有机相,以NaCl溶液为反萃剂进行反萃;(4)第二段反萃取:经第一段反萃后的有机相以硝酸钠溶液为反萃剂进行反萃;(5)将步骤(3)得到的第一段反萃液通过硫化钠沉淀后,得到银铅沉淀产品;(6)将步骤(4)得到的第二段反萃液通过氢氧化钠沉淀后,得到镓铁沉淀产品。本发明所述的处理工艺能从含银、镓和其他金属的铅锌尾矿浸出液中分离银镓等稀贵金属,实现低浓度银、镓金属的萃取分离富集回收。

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18-10-2019 дата публикации

A method of going demagging, fluorine ion from sulfuric acid solution

Номер: CN110343860A

一种从硫酸溶液中去除镁、氟离子的方法,具体为一种锌冶炼系统中去除镁、氟离子的方法,属于湿法冶金技术领域,首先往锌中浸液中加入除镁剂进行选择性除镁,得到氟化镁和除镁后液;氟化镁碱浸后得到碱浸液和碱浸渣,碱浸渣水热转化得高值六角片状氢氧化镁,碱浸液返回作除镁剂使用;同时往除镁后液中加入除氟剂进行深度除氟,得到氟化钙和除氟后液;氟化钙酸浸后得到酸浸渣和酸浸液,酸浸液返回作除镁剂使用,酸浸渣返回作除氟剂使用;最后除氟后液送电解工序。本发明能有效实现锌冶炼系统中镁、氟离子的综合去除;除镁剂和除氟剂能循环使用,满足清洁生产环保要求;同时附产高值六角片状氢氧化镁,实现资源高值化利用,还可拓展到其它硫酸溶液中镁、氟离子的去除。

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20-09-1999 дата публикации

Method of isolating copper from sulfur-bearing copper ore or concentrate

Номер: RU2137856C1

FIELD: hydrometallurgy. SUBSTANCE: ore or concentrate is subjected to oxidation under pressure in presence of oxygen and acidic chloride solution to give oxidation product and insoluble basic copper sulfate salt. Oxidation under pressure is performed in presence of bisulfate and sulfate ions' source, for example, sulfuric acid. Amount of added sulfate source provides at least stoichiometric amount of sulfate ions required for formation of basic copper sulfate salt, which is less than amount of in situ generated sulfate at oxidation under pressure. In typical version, oxidation under pressure is effected at specified H + /Cu ratio such that filtrate of oxidation product containing chief part of ore or concentrate copper whereas basic copper salt contains insignificant part of concentrate copper. Invention provides choice of H + /Cu ratio corresponding to content copper in ore or concentrate: value of this ratio is increased as content of copper in ore or concentrate decreases. In additional version, basic copper salt is dissolved in subsequent normal-pressure leaching stage. Concentrated copper solution that is suited to electrochemical isolation of copper is prepared by the aid of liquid extraction. This method is also satisfactory for isolation zinc and copper. EFFECT: increased degree of copper isolation. 55 cl, 4 dwg, 10 tbl, 11 ex ЭД гс ПЧ ГЭ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2137 856 ' 61) МК” С 22 В 15/00 13) СЛ 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 97112397102, 20.12.1994 (24) Дата начала действия патента: 20.12.1994 (30) Приоритет: 20.12.1994 УМО РСТ/ЮА 94/00696 (46) Дата публикации: 20.09.1999 (56) Ссылки: Ц$ 4039406 А, 02.08.77. 4$ 4338168 А, 06.07.82. 5Ц 392127 А, 20.10.13. $Ч 629890 А, 25.08.78. 4$ 4632738 А, 30.12.86. ЕР 0102725 А, 14.03.84. ЕК 235117ГА, 09.12.77. (85) Дата перевода заявки РСТ на национальную фазу: 21.07.97 (86) Заявка РСТ: СА 94100696 (20.12.94) (87) Публикация РСТ: М/О ...

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01-07-1998 дата публикации

Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulfide minerals

Номер: CN1186524A
Автор: D·L·琼斯
Принадлежит: CESL Ltd

一种从矿石或浓缩物中提取镍/钴有价物的方法,它包括步骤:将该矿石或浓缩物,在氧气及含有卤化物、铜和硫酸根离子的酸性溶液存在下,进行加压氧化,从而从形成的加压氧化浆料中获得含镍/钴有价物的溶液。对该溶液进行选择性沉淀处理,以获得含镍/钴氢氧化物的固体。对该固体再用铵盐溶液进行镍/钴溶浸,以产生含镍/钴有价物的溶浸溶液和残渣。镍/钴有价物通过溶剂萃取而分离,分别产生适用于电解镍和钴的溶液。本发明方法还可回收贵金属和其他金属如铜。

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22-09-2017 дата публикации

A kind of new and effective purification technique of zinc hydrometallurgy

Номер: CN107190154A
Принадлежит: SOUTHWEST PETROLEUM UNIVERSITY

本发明涉及一种湿法炼锌新型高效净化工艺,属于湿法炼锌锌液净化生产技术领域。所述湿法炼锌新型高效净化工艺包括:主系统采用锌粉置换法(三段净化)去除锌液中铜镉钴等杂质离子,副系统采用锌粉+化学药剂法(四段净化)将铜镉钴渣进行净化分离提纯。本发明优点:(1)主系统采用锌粉置换工艺,其净化除杂能力强,无杂质带入主系统,避免烧板等风险;(2)副系统采用锌粉+化学药剂法对铜镉渣浸出液进行分离净化,其除钴效率高,反应时间短,综合能耗低,分离效果好;(3)副系统净化产生的贫镉液可返回主系统浸出工序,提高锌的回收利用率,产生的镉锭、铜渣、钴渣可以销售,降本增效。

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12-10-2011 дата публикации

Method for recovering rare metals in zinc leaching process

Номер: CN101351567B
Принадлежит: Outokumpu Technology Oyj

本发明涉及在锌浸出过程中回收稀有金属的方法。硫化锌精矿通常也含有少量稀有金属例如铟和镓。如果在原料中这些金属的含量足够高,那么它们回收在经济上是值得的。在根据本发明的方法中,在至少部分硫化物精矿直接进行浸出而无需焙烧的锌浸出过程中回收铟和其它希望的稀有金属。

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29-11-2019 дата публикации

A method of recycling zinc, copper, cadmium from the copper-cadmium slag of zinc hydrometallurgy

Номер: CN107287432B

本发明属于湿法冶金技术领域,尤其是一种从湿法炼锌的铜镉渣中回收锌、铜、镉的方法,通过氧压浸出、中和除铁、电解、真空蒸馏、分离、铜富渣处理、电解残液处理共七个步骤来完成锌、铜、镉金属的回收,整个工艺流程短、废渣和废水少,环境污染小、生产成本低。

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07-06-2019 дата публикации

The method that wiring board bath smelting cigarette ash noble metal recycles chlorination enrichment

Номер: CN108165754B
Автор: 吴玉锋, 李彬, 潘德安
Принадлежит: BEIJING UNIVERSITY OF TECHNOLOGY

线路板熔池熔炼烟灰贵金属循环氯化富集的方法,属于烟灰中溴、贱金属和稀贵金属等有价元素综合回收领域,特别涉及线路板熔池熔炼烟灰中贵金属循环氯化富集的的方法。主要包括线路板熔池熔炼烟灰预处理工艺和稀贵金属循环氯化富集工艺。回收得到粗铜、粗硫酸锌、溴盐、氯化铅和贵金属富集渣与传统工艺相比,该发明技术实现了稀贵金属的循环富集,避免尾液排放造成的有价金属损失和二次污染。

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31-03-2023 дата публикации

Method for reducing zinc content in iron sediment slag in zinc hydrometallurgy process

Номер: CN114635046B
Принадлежит: CENTRAL SOUTH UNIVERSITY

本发明属于湿法冶金技术领域,公开了湿法炼锌过程中降低沉铁渣中锌含量的方法。将阳离子表面活性剂预处理的锌焙砂、阴离子表面活性剂预处理的富铁晶种、添加剂加入到含铁的硫酸锌溶液中,进行除铁反应,然后重选分离出富铁渣和富锌渣。富铁渣进一步经过水热处理后得到锌含量非常低的沉铁渣。本发明利用表面活性剂增加锌焙砂表面与铁沉淀颗粒的表面的性质差异,使得沉铁过程中铁尽可能不附着在富锌颗粒表面;富铁颗粒在沉铁过程中作为模板晶种使铁更容易在其表面附着生长。沉铁渣中铁品位升高至60%~67%,可作为铁矿使用。

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16-01-2008 дата публикации

Method and apparatus for controlling metal separation

Номер: CN100362118C
Принадлежит: Outtec

本发明涉及一种在制锌过程中控制连续金属去除的方法和装置,其中金属去除是在一个或多个反应器(11a-c)中进行的,与反应器相连地,测量氧化还原电势(16a-c)及酸度和/或碱度,并根据测量结果,朝所需方向调节金属去除的工艺变量(17a-c)。按照本发明,在反应器外部与反应器出口管相连,根据反应器中产生的淤浆进行氧化还原电势的测量(16a-c),并以预定间隔净化测量仪器(16a-c)。

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05-02-2021 дата публикации

Method and system for removing sulfur dioxide in flue gas by zinc-ammonia complex coupling persulfate advanced oxidation technology

Номер: CN112323097A

本发明公开了一种锌氨络合耦合过硫酸盐高级氧化技术脱除烟气中二氧化硫的方法及系统,该方法首先将含锌废弃物与氨水及过硫酸铵溶液混合均匀,固液分离,得到锌氨络合液,接着将锌氨络合液通入电解装置除杂并制得含有过硫酸铵的混合溶液,混合溶液喷入烟气脱硫塔中,过硫酸铵在烟气提供的废热中进行活化,产生具有强氧化性的SO 4 · - ,锌氨络合液在氧化强化下吸收烟气中的SO 2 ,实现烟气高效脱硫的目的;脱硫浆液再次通入电解槽中,多次循环电解制得纯纳米锌,电解生成的硫酸铵与过硫酸铵混合溶液进行回收利用,再次参与锌氨络合反应。本发明具有烟气脱硫与二次锌资源回收工艺耦合,烟气脱硫效率及废弃物中金属回收率大以及硫酸铵多途径循环利用等优点。

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16-11-1955 дата публикации

Improvements in or relating to the recovery of zinc

Номер: GB740733A
Автор:
Принадлежит: Chemical Construction Corp

In the recovery of zinc from zinciferous material containing at least one other nonferrous metal, particularly copper by washing with an ammonia-ammonium carbonate solution, the zinc is selectively precipitated as a basic carbonate by heating the liquor preferably to 60 to 90 DEG C to volatilize ammonia, carbon dioxide and water to such a degree that the other metal values are not precipitated, the resultant precipitate is removed and the residual liquor is rejected to the washing step. The process is applicable to the precipitation of zinc from ammonia-ammonium carbonate liquors containing dissolved copper, cobalt, nickel silver and cadmium together with minor amounts of lead and iron, thus brass, bronze or mixtures thereof with copper scrap are treated with ammonia and ammonium carbonate to dissolve zinc and copper as ammine carbonates and the copper largely precipitated by a reducing gas at superatmospheric temperature and pressure, preferably leaving about 70 grams of copper per litre in solution. This copper content should preferably be brought to the cupric stage by a mild oxidation before zinc recovery is effected. The ammine carbonate solution is heated at 75 DEG C to drive off ammonia and carbon dioxide and the solution then cooled or diluted to effect precipitation of basic zinc carbonate. The ratio of zinc to copper in the filtrate which is rejected to the backing step, is preferably between 1 to 4 and 1 to 8. The zinc precipitate is said to be of probably formula ZnO1ZnCO3 (NH4) CO3 which basic zinc carbonate-ammonium carbonate double salt may be subsequently calcined to remove the ammonia and carbon dioxide.

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24-11-2017 дата публикации

The method of iron in a kind of pressurize oxygen-enriched air oxidation removal iron content, zinc solution

Номер: CN107385229A

本发明涉及湿法冶金技术领域,尤其是一种加压富氧空气氧化脱除含铁、锌溶液中铁的方法,采用压缩富氧空气与铜离子成分以及结合技术参数的控制,使得对含铁、锌硫酸锌溶液中的铁脱除效果较优,提高了除铁效率,而且有效的避免了氢氧化铁胶体形成,降低了锌损失,降低了除铁成本。

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18-07-2013 дата публикации

Method for selective precipitation of iron, arsenic and antimony

Номер: CA2861537A1
Принадлежит: Dundee Sustainable Technologies Inc

A method for selectively processing a polymetallic oxide solution containing a plurality of base metals comprising at least one of: Cu, Co, Ni, Zn associated with iron, comprising acid leaching the solution; recovering a filtered leachate; oxidizing the leachate; and adjusting the pH of the leachate in presence of a complexing agent; wherein the acidic solution is one of: i) a hydrochloric acid solution and ii) a sulfuric acid solution at a pH lower than about 1.5, and the complexing agent is one of: i) ammonium chloride and ii) ammonium sulfate, the step of adjusting the pH comprising raising the pH to a range between about 2.5 and about 3.5.

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19-08-1997 дата публикации

Chloride-assisted hydrometallurgical copper extraction

Номер: NO972836L
Автор: David L Jones
Принадлежит: Cominco Eng Services

En fremgangsmåte for ekstrahering av kobber fra en sulfidkobbermalm eller -konsentrat omfatter at malmen eller konsentratet underkastes trykkoksydasjon i nærvær av oksygen og en sur kloridløsning under oppnåelse av et resulterende trykkoksydasjonsfiltrat og et uløselig basisk kobbersulfatsalt. Trykkoksydasjonen utføres i nærvær av en kilde til bisulfat- eller sulfal-ioner, så som svovelsyre. Mengiden av tilsatt sulfatkilde inneholder minst den støkiometriske mengde sulfat- ioner som er nødvendig til dannelse av det basiske kobbersulfatsalt minus meng- den sulfat dannet in situ ved trykkoksydasjonen. Ved en spesiell utførelsesform utføres trykkoksydasjonen ved et for-besteml forhold mellom H* og Cu slik at trykkoksydasjons-filtratet innetiolder en hovedandel av kobberet i malmen eller konsentratet, og det basiske kobbersalt inneholder en mindre andel av kobberet i konsentratet. Oppfinnelsen tilveiebringer videre utvelgelse av forholdet mellom H* og Cu i henhold til kvaliteten av malmen eller konsentratet, idet verdien av forhol- det velges med økende størrelse sammenliknet med avtakende kvalitet av mal- men eller konsentratet. Ved en ytterligere utførelsesform oppløses det basiske kobbersalt i et etterfølgende atmosfærisk utlutingsstadiurh. Det oppnås en kon- sentrat-kobberiøsning som er egnet for elektrolytisk utvinning, ved hjelp av løs- ningsmiddelekstraksjon. Fremgangsmåten tilveiebringer også ekstrahering av sink og nikkel fra malmen.

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22-06-1984 дата публикации

METHOD FOR REMOVING IRON FROM LEACHING SOLUTIONS

Номер: FR2537968A1
Принадлежит: Air Liquide SA

L'INVENTION CONCERNE UN PROCEDE D'ELIMINATION SELECTIVE DU FER DE SOLUTIONS ACIDES CHLOREES PROVENANT DE LA LIXIVIATION DE MINERAIS SULFURES COMPLEXES EN VUE DE LA PRODUCTION DE METAUX NON FERREUX. SELON LE PROCEDE, ON OXYDE EN FER FERRIQUE LE FER FERREUX PRESENT DANS LA SOLUTION PUIS ON FILTRE ET LAVE LE PRECIPITE DE FER FERRIQUE AINSI FORME. POUR EFFECTUER CETTE OXYDATION ON INTRODUIT UN GAZ OXYDANT DANS LADITE SOLUTION ET ON AUGMENTE, DE FACON CONTINUE, EN FONCTION DU TEMPS LA PRESSION PARTIELLE DE L'OXYGENE DANS LEDIT GAZ. L'INVENTION S'APPLIQUE AUX SOLUTIONS PROVENANT DE L'ATTAQUE HYDROMETALLURGIQUE DU ZINC. THE INVENTION CONCERNS A PROCESS FOR THE SELECTIVE REMOVAL OF IRON FROM CHLORINATED ACID SOLUTIONS FROM THE LIXING OF COMPLEX SULPHIDE ORES WITH A VIEW TO THE PRODUCTION OF NON-FERROUS METALS. ACCORDING TO THE PROCEDURE, THE FERROUS IRON PRESENT IN THE SOLUTION IS OXIDIZED TO FERRIC IRON THEN THE FERRIC IRON PRECIPITE IS FILTERED AND WASHED IN THIS FORM. TO CARRY OUT THIS OXIDATION, AN OXIDIZING GAS IS INTRODUCED INTO THE SAID SOLUTION AND THE PARTIAL PRESSURE OF THE OXYGEN IN THE GAS IS CONTINUOUSLY INCREASED AS A FUNCTION OF TIME. THE INVENTION APPLIES TO SOLUTIONS ARISING FROM THE HYDROMETALLURGIC ATTACK OF ZINC.

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16-04-1976 дата публикации

Recovery of non-ferrous metals from sulphate solns. - by pptn. with hydrogen sulphide and lime followed by froth flotation

Номер: FR2285465A1
Автор: [UNK]
Принадлежит: Vale Canada Ltd

The recovery of Ni, Co, Zn and/or Cu from sulphate solns. contg. them is carried out by simultaneously introducing H2S and a calceferous base into the soln. in amts. such that the dissolved metal is pptd. as sulphide at the same time as CaSO4 is pptd., maintaining the soln. at a pH of 2.5-3.5, and subjecting the ppte. to forth flotation to isolate the sulphides. The process can be used to isolate the metals from sulphate solns. obtd. by oxidising sulphide ores. Inexpensive lime (limestone, qicklime or slaked lime) is used; good sepns. can be achieved in large-scale operations (e.g. with >99% of the metal recovered in the concentrate). A suitable starting soln. contains 5-50 g Ni/1. Pptn. is pref. effected at 40-80 degrees C (esp. 50-75 degrees C) using limestone. In a continuous process, pptn. is effected in a series of tanks through which the soln. is circulated in countercurrent to the H2S, the lime being added to each tank so as to maintain a pH of 2.5-3.5. After pptn., the mixt. is pref. degassed by reducing the ambient pressure, the H2S-risk gas obtd. being recycled to the pptn. step. The mixt. can then be concd. to form a thick slurry, or the ppte. can be filtered off and slurried in H2O. Flotation is pref. effected in the presence of a sulphhydryl collector, e.g. K amyl xanthate.

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05-10-2007 дата публикации

Treating steelwork sludge, useful to recover zinc salt, comprises mechanically treating large particles, separating and leaching an overflow, adding crude sludge, precipitating and filtering iron as iron oxide and recovering liquid phase

Номер: FR2899222A1
Автор: Eric Marcadier
Принадлежит: VB2M SOC PAR ACTIONS SIMPLIFIE

Treating a sludge from steelworks comprising water, zinc, iron, lead, carbon and heavy metals, comprises mechanically treating large particles to separate fine particles, separating by cycloning to obtain a overflow of small particles, leaching the overflow with a 15% acid solution and recovering the leachate at a pH of 0.55, adding crude sludge containing zinc hydroxide to bingback the pH to 1.5, precipitating the iron in the form of iron oxide hydroxide by bringing back the pH to 3.8 by adding soda and filtering the iron oxide and recovering the liquid phase. Treating a sludge from steelworks comprising water ( 50%), zinc (28%), iron (7%), lead (7.5%), where the balance being carbon and heavy metals, comprises mechanically treating large particles by friction of particles against each other to separate fine particles, separating by cycloning, particularly by hydrocycloning to obtain a overflow of particles that are being small and constituting the majority of the composition, leaching the overflow with a 15% acid solution and recovering the leachate at a pH of 0.55, adding crude sludge containing zinc hydroxide to bingback the pH to 1.5, precipitating the iron in the form of iron oxide hydroxide by bringing back the pH of leachate to 3.8 by adding soda and filtering the iron oxide and recovering the liquid phase.

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30-05-1980 дата публикации

Patent FR2285465B1

Номер: FR2285465B1
Автор:
Принадлежит: Vale Canada Ltd

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04-09-1987 дата публикации

PROCESS FOR TREATING ZINC-CONTAINING DUST FROM ELECTRIC STEEL OVENS

Номер: FR2535736B1
Автор: [UNK]
Принадлежит: PROMOTION PROCEDES HYDRO METAL

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04-02-1977 дата публикации

Manganese ions removal from zinc sulphate soln. - obtd. during extn. of zinc by oxidising to manganese dioxide and pptn.

Номер: FR2317365A1
Автор: [UNK]
Принадлежит: Newmont Exploration Ltd

Method of removing soluble manganous ions from a soln. contg. zinc sulphate comprises treatment of (part of) the soln. with an oxidant which can oxidise the manganous ions to insoluble filterable alpha-MnO2, the oxidant being in amount 130-150% of that theoretically required to remove all the Mn ++, and separating off the ppte. The process is effected at between 90 degrees C and the b.pt. of the soln. in 1/2-2 hrs. Used in the recovery of zinc from a concentrate of Zn contg. Mn, the concentrate having been roasted and leached to dissolve the zinc and treated to remove iron. Process may also be used in removing manganese from other metal salt solutions. In the subsequent process of electrolysing the zinc sulphate to extract the zinc, improved yields are obtained of zinc uncontaminated with Mn, having improved physical and chemical properties.

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13-11-2008 дата публикации

A method for the production of metal products

Номер: CA2687428A1
Автор: Asher Vitner

The invention provides a method for the Industrial purification of a low-grade polyvalent cation feed stream of purity P1, by the formation of a polyvalent cation- double-salt precipitate of purity P2 and a polyvalent cation solution with purity P3, wherein P2>P1>P3, said method comprising the steps of: a) forming, from said feed, a medium comprising water, polyvalent cation, a cation selected from the group consisting of ammonium, cations of alkali metals, protons and a combination thereof, and anions; which formed medium is further characterized by the presence of (i) a double- salt precipitate comprising a polyvalent cation, at least one of said cations and at least one of said anions; and (ii) a polyvalent cation solution; and wherein the concentration of said anions is higher then 10% and the ratio between the concentrations of said cation to said anion in said polyvalent cation solution is within Zone DS as herein defined; and b) separating at least a portion of said precipitate from said solution.

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08-02-2017 дата публикации

Method for removing fluorine and chlorine from zinc sulfate solution

Номер: CN106381388A

本发明公开了一种从硫酸锌溶液中脱除氟氯的方法,属于锌冶金净化领域。涉及一种以针铁矿法从含铁溶液中同时脱除氟氯的方法,有稀释法和还原氧化法两种实施方式。稀释法是将除铁前液加入到底液中,氟氯随除铁过程去除,前液含三价铁3~50g/L,反应温度70~100℃,pH2.5~4.5,前液加入速度2~9.2mL/min。还原氧化法是向除铁前液通空气或富氧空气,氟氯随二价铁氧化沉淀而除去,前液含二价铁3~50g/L,空气或富氧空气流量为5~50L/min,反应温度70~100℃,pH2.5~4.5,反应时间为2~8h。本方法能同时脱氟氯,依托工艺必须的除铁工序,不用增加专门氟氯脱除工序,无需额外投入。

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03-09-2010 дата публикации

PROCESS FOR THE TREATMENT AND VALORISATION OF ZINC - RICH STEEL PRODUCTS.

Номер: FR2931842B1
Принадлежит: VB2M

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27-06-2003 дата публикации

PROCESS FOR RECYCLING SLUDGES FROM BLAST FURNACES

Номер: FR2810678B1
Принадлежит: Patrice Jean Albert Stengel

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10-08-1973 дата публикации

Zinc sulphate purification - by adding zinc dust cycloning and recycling zinc underflow

Номер: FR2165720A1
Автор: [UNK]
Принадлежит: Teck Metals Ltd

Impure neutral ZnSO4 soln. used in Zn recovery processes, is purified by (a) adding Zn dust to flowing soln. and agitating to cause reaction between the Zn dust and impurity cations (b) passing soln. through a cylone to reactivate unused Zn (C) recycling underflow to the ZnSO4, stream and (d) separating the pptd. impurities from the overflow of purified ZnSO4, soln. reactivation of the recycled Zn dust reduces the need for fresh make-up Zn dust. To prevent oxidation and redissolving of pptd. metals the process takes place in non-oxidising conditions.

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06-08-2008 дата публикации

Method for recovering sulfur from minerals

Номер: JP4129499B2
Принадлежит: Dowa Metals and Mining Co Ltd

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16-04-2021 дата публикации

Method for separating zinc and iron cobalt in solution

Номер: CN111748689B
Принадлежит: CENTRAL SOUTH UNIVERSITY

本发明属于废料资料回收技术领域,具体公开了一种分离溶液中锌和铁钴的方法:将包含锌离子、钴离子和离子态铁的混合溶液置于耐压反应釜中,调控混合溶液的pH为7~8.5,随后关闭反应釜并升温,当温度达到150~220℃后向耐压反应釜中通入增压气体,进行增压选择性分离反应,反应完成后,泄压,固液分离,得到含锌的溶液和含铁酸钴沉淀。本发明技术方案,能够有效实现铁钴和锌的一步、高选择性、高回收率地分离。

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24-10-1980 дата публикации

Patent FR2317365B1

Номер: FR2317365B1
Автор: [UNK]
Принадлежит: Newmont Exploration Ltd

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28-09-1979 дата публикации

Patent FR2338997B3

Номер: FR2338997B3
Автор: [UNK]
Принадлежит: Mx-Processer Reinhardt and Co AB

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02-07-2013 дата публикации

Method for recovery of zinc by countercurrent leaching

Номер: CA2516411C
Принадлежит: OUTOTEC OYJ

The invention relates to method for leaching zinc-containing materials in connection with the electrolytic recovery of zinc. According to this method, the feed materials i.e. zinc calcine and zinc sulphide, are leached in three stages, in which he sulphuric acid content of the stages rises in accordance with the direction in which the solids are moving. The solids and solution formed in the leaching stages are routed throughout the process countercurrently in relation to each other.

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16-07-2004 дата публикации

IMPROVEMENT FOR THE TREATMENT OF USED ELECTRIC BATTERIES BY HYDROMETALLURGICAL ROUTE

Номер: FR2827710B1
Автор: Farouk Tedjar
Принадлежит: RECUPYL SA

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13-06-2007 дата публикации

Preparation of zinc chemicals from the minor flow of a process

Номер: EP1794334A1
Автор: Mikko Ruonala
Принадлежит: Outokumpu Technology Oyj

The invention is a novel process arrangement for producing pure zinc chemicals from the minor flow of a calcining-dissolving-electrolysis type of a preparation process of zinc. The invention is based on the fact that part of the production of the zinc sulphate-containing solution obtained from the dissolution of the calcining-dissolving-electrolysis plant is directed to the preparation of zinc chemicals. The actual recovery process of zinc, which is based on electrolysis, is not disturbed, as only part of the production of the zinc sulphate solution is directed to the preparation of zinc chemicals. The extraction process is based on the use of any organically substituted phosphoric acid or organically substituted thiophosphinic acid. The strong acid solution, which is generated as a by-product in the extraction process of zinc, is recycled back to the calcining-dissolving-electrolysis type of a preparation process of zinc.

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15-03-2022 дата публикации

Beneficiation method for low-grade zinc-containing raw ore

Номер: CN110972482B
Принадлежит: Chongqing Dongqun Technology Co ltd

一种低品位含锌原矿的选矿方法,尤其涉及一种经由锌酸钙合成步骤对低品位含锌原矿进行选矿的方法,该方法包括浸提步骤、脱碳沉淀步骤、锌酸钙合成步骤、干燥煅烧步骤。

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15-06-2017 дата публикации

Method for recycling valuable metals from spent batteries

Номер: CA2950811A1

A process has been developed to recover and recycle the metals present in spent batteries, including alkaline spent batteries alone or mixed with other types of spent batteries. This method shows a good potential in terms of metals recoveries efficiencies and economic feasibility. Firstly, the spent batteries are crushed (optionally after having been frozen in the case of spent batteries of mixed types). Then, the undesirable parts (plastics, steel cases, papers, etc.) are removed by screening. The collected powder, containing the metals, is mixed with a solution of sulfuric acid in the presence of a reducing agent. The solid/liquid separation is carried out by filtration and the leachate is purified in order to selectively recover the metals. The purification steps consist of: a) recovering Zn by solvent extraction followed by an electrowinning process; b) simultaneously recovering Mn and Cd by solvent extraction process; c) selectively recovering Cd from the mixture solution of Cd and Mn by electrowinning process; d) precipitating Mn from a pure solution of MnSO4 in a carbonate form; e) removing the impurities present in the effluent by solvent extraction in order to obtain a pure NiSO4 solution; f) precipitating Ni from a NiSO4 solution in a carbonate form.

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27-04-2007 дата публикации

Method for recovery of zinc by countercurrent leaching

Номер: EA008362B1

The invention relates to method for leaching zinc-containing materials in connection with the electrolytic recovery of zinc. According to this method, the feed materials i.e. zinc calcine and zinc sulphide, are leached in three stages, in which he sulphuric acid content of the stages rises in accordance with the direction in which the solids are moving. The solids and solution formed in the leaching stages are routed throughout the process countercurrently in relation to each other.

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06-10-1999 дата публикации

Recovery of iron products from waste material streams

Номер: EP0946767A1
Принадлежит: Metals Recycling Technologies Corp

A method for the recovery of iron products, specifically direct reduced iron and iron oxide suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by treating the waste streams with an ammonium chloride leaching solution, separating the undissolved precipitates comprising iron compounds from the leachant solution, and further treating the undissolved precipitants by elevated temperature roasting, resulting in the iron feedstocks.

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05-08-2011 дата публикации

Metal separation control method and apparatus

Номер: KR101055073B1
Принадлежит: 오토텍 오와이제이

본 발명은 금속 제거가 하나 이상의 반응기(11a 내지 11c)에서 수행되고, 상기 반응기에 있어서 산화 환원 전위와 산도 및/또는 염기도가 측정 기구(16a 내지 16c)에서 측정되며, 상기 측정 결과에 기초하여 상기 금속 제거의 공정 변수들이 원하는 방향으로 조절되는, 아연 제조 공정과 관련한 연속적인 금속 제거를 제어하는 방법 및 장치에 관한 것이다. 본 발명에 따르면, 상기 산화 환원 전위는 상기 반응기 외부에서 상기 반응기의 배출 파이프와 연결되어 상기 반응기에서 생성된 슬러지로부터 측정 기구(16a 내지 16c)에서 측정되고, 상기 측정 기구(16a 내지 16c)는 예정된 간격마다 세정된다. In the present invention, metal removal is carried out in one or more reactors (11a to 11c), in which the redox potential and acidity and / or basicity are measured in measuring instruments (16a to 16c) and based on the measurement results, A method and apparatus for controlling continuous metal removal in connection with a zinc manufacturing process, in which process parameters of metal removal are adjusted in a desired direction. According to the invention, the redox potential is measured in the measuring instruments 16a to 16c from the sludge produced in the reactor connected to the discharge pipe of the reactor outside the reactor, and the measuring instruments 16a to 16c are It is cleaned every interval. 아연 제조, 금속 제거, 반응기, 산화환원전위, 산도, 염기도, 공정변수 Zinc production, metal removal, reactor, redox potential, acidity, basicity, process variables

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10-09-2004 дата публикации

Method for recovery of zinc by countercurrent leaching

Номер: CA2516411A1

The invention relates to method for leaching zinc-containing materials in connection with the electrolytic recovery of zinc. According to this method, the feed materials i.e. zinc calcine and zinc sulphide, are leached in three stages, in which he sulphuric acid content of the stages rises in accordance with the direction in which the solids are moving. The solids and solution formed in the leaching stages are routed throughout the process countercurrently in relation to each other.

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01-02-1974 дата публикации

Patent FR2190936A1

Номер: FR2190936A1
Автор: [UNK]
Принадлежит: MINERARIA METALLURG PERTUSOLA

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07-07-2009 дата публикации

Heap bioleaching process for the extraction of zinc

Номер: CA2453364C
Принадлежит: Teck Metals Ltd

A method of extracting zinc from a sulphidic ore is provided which comprises bioleaching the ore in a heap with acidophilic microorganisms to produce a pregnant leach solution which is recovered from the bottom of the heap. An integrated process which comprises subjecting the pregnant leach solution to neutralization and solvent extraction to produce a concentrated zinc solution is also provided. Zinc may be recovered from the concentrated solution by means of electrowinning, either in the absence or presence of manganese. Alternatively zinc may be recovered in the form of a zinc compound.

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13-03-2002 дата публикации

Process for the separation and removal of iron ions from zinc oxide and basic zinc solution

Номер: EP1186677A2
Автор: Vincent Wise Martin
Принадлежит: Clariant Finance BVI Ltd

The present invention provides a process for the separation and removal of iron ions from a basic zinc solution. The process involves: treating an aqueous basic zinc solution with a solid ion exchange resin containing an insoluble cross-linked polymer which contains at least one pendant phosphonate group, at a pH of from about 8 to about 12, and a temperature of from about 10°C to about 90°C, for a time period sufficient to form solid phase-bound iron ions and a liquid phase containing the aqueous basic zinc solution having an iron ion concentration that is substantially reduced; separating the solid phase-bound iron ions and the liquid phase; and treating the solid phase-bound iron ions with an aqueous acidic solution under conditions sufficient to regenerate the solid ion exchange resin. The present invention also provides a process for preparing zinc oxide that is substantially free of iron ions. This process involves: (a) treating ammonium carbonate and zinc oxide to form a mixture containing a zinc ammonia carbonate complex and metal impurities such as iron, lead, and cadmium, and optionally sulfur; (b) optionally filtering the mixture from (a) to produce a residue containing mostly sulfur and a filtrate containing mostly the zinc ammonium carbonate complex and metal impurities containing iron, lead and cadmium; (c) treating the filtrate from (b), or the mixture from (a) with zinc(0) to remove the lead and cadmium and to form a cementation product, and filtering the cementation product to form a cementation residue containing mostly lead and cadmium and a cementation filtrate containing mostly zinc and iron ions; (d) treating the cementation filtrate from (c) with the above mentioned ion exchange resin, for a time period sufficient to form solid phase-bound iron ions and a liquid phase containing the cementation filtrate having an iron ion concentration that is substantially reduced; (e) heating the liquid phase from (d) to remove ammonia and to precipitate ...

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21-01-1925 дата публикации

Process for producing products suitable for metallurgy from solutions of zinc chloride

Номер: FR583796A
Автор: Alexander Nathansohn
Принадлежит:

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27-12-2022 дата публикации

Comprehensive soot recovery method based on chloride leaching

Номер: CN111876608B

本发明属于烟灰回收技术领域,公开了一种基于氯盐浸出的烟灰综合回收方法。该方法采用KCl盐溶液加温浸出得滤渣和富铅滤液;富铅滤液冷却过滤得铅精矿和脱铅后液;脱铅后液处理得锌精矿和净化液;净化液蒸发结晶,得KCl结晶盐和结晶母液;结晶母液经过萃取、洗涤、反萃,分别得到RbCl和CsCl的反萃液,RbCl反萃液蒸发结晶得到RbCl产品,采用SnCl 4 对CsCl进行沉淀,得到Cs 2 SnCl 6 固体,经煅烧后再提纯得到CsCl产品。本发明提供的基于氯盐浸出的烟灰综合回收方法利用烟灰自身组成特性,将Pb、Zn、Cu、K、Rb分别提取并制备为高附加值产品,化学试剂用量少,浸出效率高,成本低,经济效益明显。

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22-01-2021 дата публикации

Method for purifying zinc sulfate solution by using pressurized zinc powder

Номер: CN110804695B

本发明公开了一种净化硫酸锌溶液的方法,以除去硫酸锌溶液中铜、镉、钴和镍等金属杂质,步骤包括:将锌粉调浆加热,通过加压设备加压,形成热压锌粉以喷射流体射入硫酸锌溶液中进行净化处理,锌粉耗量为待处理金属杂质总质量的1.2~2.5倍,经反应‑固液分离后,获得净化后的硫酸锌溶液。根据本发明提供的净化方法,有效地优化了锌粉‑溶液之间的固‑液传热过程,保证反应界面温度高于溶液温度,促进化学反应热力学过程,能够在高效除杂的同时有效的降低锌粉耗量和缩短置换反应时间,减少渣量的产生及提高后续渣中有价金属的回收;同时避免硫酸锌整体溶液温度的增加,降低生产过程能耗;综合实现了经济效益和环境效益。

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09-03-2021 дата публикации

Method for extracting zinc salt from zinc-containing wastewater

Номер: CN112458310A
Принадлежит: Sateri Jiujiang Fiber Co ltd

本发明目的在于提供一种含锌废水中提取锌盐的方法,这种方法包括包括以下步骤:(1)向含锌废水中加入聚丙烯酸钠混合物,并进行搅拌,得到第一溶液;(2)向所述第一溶液中加入烧碱,搅拌,得到第二溶液;(3)向所述第二溶液中加入碳酸钠和双氧水,得到第三溶液;(4)将第三溶液进行生物吸附,过滤,然后得到滤渣;(5)将滤渣浸出剂混合,静置5h后,得到含锌的浸出液;本申请先通过多级处理过滤得到含有锌的滤渣,然后对滤渣进一步处理,通过萃取从滤渣中提取含锌的组合物,在保证废水清理污染物的情况下提取含锌提取物。

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15-10-2021 дата публикации

Method for removing chlorine from zinc sulfate solution

Номер: CN109371259B
Автор: 颜昌军
Принадлежит: Hengyang Dayu Zinc Industry Co ltd

本发明公开了一种从硫酸锌溶液中去除氯的方法,其步骤为:向硫酸锌溶液中加入浓硫酸调整pH;加入抗坏血酸,再加入氧化亚铜进行除氯处理,形成氯化亚铜沉淀,过滤后取滤液备用;用无水乙醇冲洗氯化亚铜沉淀,合并冲洗液和滤液,得到混合液;向混合液中加入等体积的有机胺,萃取,静置分层,即得去除氯的硫酸锌溶液和富氯有机相;用反萃取剂反萃所述富氯有机相,使氯和有机相分离。本发明的方法有效去除了硫酸锌溶液中的氯离子,脱氯效率高、工艺简单,降低了除氯的成本。

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09-08-2012 дата публикации

Precipitation of zinc from solution

Номер: CA2825228A1
Автор: Paul Benjamin VOIGT
Принадлежит: Xstrata Queensland Ltd

A method of precipitating a zinc containing solid from an acidic solution containing dissolved zinc and magnesium comprising contacting the solution with a calcium containing neutralising agent to raise the pH of the solution to 4.5 to 7.5 at a temperature of from 70 to 95°C to thereby precipitate a solid zinc containing material and gypsum without causing substantial precipitation of magnesium, and separating the zinc containing material from the gypsum.

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01-11-1999 дата публикации

Method for treating steel works dust by wet process

Номер: AU3042299A
Автор: Farouk Tedjar, Gilles Roux
Принадлежит: Recupac

A method for treating steel works dust in order to recuperate elements capable of being upgraded. The method comprises attrition in water followed by hydraulic grading of the resulting load. The method is characterized in that is further comprises: a washing step to separate the water soluble saline fractions of the insoluble oxides; hot treatment to eliminate metals in the form of free oxides such as zinc and lead; treatment by heating at a temperature ranging between 240 and 800° C.; treatment with sulphuric acid having a concentration between 5 and 8%.

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29-10-2019 дата публикации

A kind of metallurgical process multiple reactor cascade pH value optimal control method

Номер: CN107728664B
Принадлежит: CENTRAL SOUTH UNIVERSITY

本发明提供一种冶金过程多反应器级联pH值优化控制方法,针对冶金过程存在的焙砂添加量影响因素多、离子化验滞后性及工况变化频繁导致的焙砂添加量控制困难等问题,通过入口工况划分,利用在线检测获得的ORP和pH值,结合入口溶液流量、Fe 2+ 浓度、Cu 2+ 浓度等信息,根据出口溶液离子浓度建立焙砂添加量优化控制模型,得到pH设定值,并基于模糊控制规则建立焙砂调整量修正模型,对当前焙砂添加量进行修正,使pH达到最优设定值,从而保证针铁矿沉铁过程的稳定运行。

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13-02-2002 дата публикации

Method of recovering sulfur from leach residues of sulfidic ore processing using distillation and condensation

Номер: EP1179605A1
Принадлежит: Dowa Mining Co Ltd

A sulfurous compound such as a sulfur-rich "float" (concentrate) obtained by flotation of the residue from the leaching of a zinc concentrate is heated at a temperature not lower than the melting point of sulfur but below its boiling point, preferably not higher than 200 °C, more preferably not higher than 140 °C, and the evolving gas containing sulfur vapor is cooled at a temperature less than the melting point of sulfur, preferably at ordinary temperature, to condense sulfur.

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02-11-2021 дата публикации

Process for recovering components from alkaline cells

Номер: CN113584308A
Принадлежит: Fortum Oyj

本发明涉及使用阳极泥(锌电解废料)和其他含有锰和锌的材料,从磨碎的碱性电池中分离和回收金属。将通常称为碱性黑(AKB)的材料溶解到硫酸盐介质中,并调整锰锌比。使用结晶方法和离子交换方法处理含有金属的溶液,以产生用于多种可能应用的硫酸锰溶液和硫酸锌溶液。

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