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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 23. Отображено 23.
25-07-2023 дата публикации

Method for improving leaching rate of arsenic in arsenic sulfide slag

Номер: CN116479259A
Автор: ZOU WEI, LIU JUNCHANG, FU WEIQIN, DIAO WEIZHI, MOU XINGBING, YAN SEN, WANG KUN, YANG RUIXIAO
Принадлежит:

The invention discloses a method for improving the leaching rate of arsenic in arsenic sulfide slag, and the method for improving the leaching rate of arsenic in arsenic sulfide slag comprises the steps of pretreatment, main reaction and aftertreatment, and specifically comprises the following steps: carrying out size mixing on the arsenic sulfide slag to obtain arsenic sulfide slag ore pulp a; the arsenic sulfide slag ore pulp a is placed in a reactor, hydrogen peroxide is added under the ultrasonic and stirring conditions for reaction to obtain leached ore pulp b, and the leached ore pulp b is subjected to filter pressing and solid-liquid separation to obtain leached slag c and leached liquid d. According to the method, the arsenic sulfide slag is subjected to oxidation water leaching, the ultrasonic technology is introduced, the problem that arsenic sulfide slag microparticles are wrapped by elemental sulfur in the leaching process is solved through the specific cavitation effect of ...

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Номер записи: 1
21-05-2014 дата публикации

Preparation method of industrial silicon smelting reducer

Номер: CN103803552A
Автор: BAO CHONGJUN, LI ZONGYOU, SU JIE, WANG JIKUN, XIE GANG, WANG JIANBO, LI XIAOYANG, YANG GANG, YANG DAJIN, LU GUOHONG, JIAN SHENG, WANG ZILONG, ZHANG YONGPING, CHEN KETONG, LI HUAIREN, HE XIAOCAI, XU NA, ZHOU JIE, ZHANG ZHONGYI, REN CHENGWEI, LI XIAOYING, XU YAFEI, LI YONGGANG, DIAO WEIZHI, YU ZHANLIANG, ZHANG HUI, ZHANG WEI, LI JUN
Принадлежит:

The invention discloses a preparation method of an industrial silicon smelting reducer. The preparation method comprises the steps of uniformly mixing blind coal, a binder, various types of carbon powder and biomass to obtain a mixed material; adding the prepared mixed material in batches into a material bin of a molding machine, fully stirring in the material bin and slowly heating to the temperature of 80 DEG C to 300 DEG C, allowing the material to enter a pellet pressing system by the effect of the gravity of the material, and then performing a hot-press molding process to prepare pellets of which the sizes are from 150mm to 600 mm; rapidly demolding and drying the obtained pellets through cooling and scouring of water; adding the cooled and scoured pellets in batches into an industrial silicon ore-smelting furnace to replace charcoal to produce a high-quality industrial silicon product. An industrial silicon pellet reducer produced by the preparation method disclosed by the invention ...

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Номер записи: 2
15-08-2023 дата публикации

Method for improving grade of beta-naphthol cobalt slag through pressurized alkaline leaching

Номер: CN116590537A
Автор: MOU XINGBING, LIU JUNCHANG, WANG KUN, FU WEIQIN, YANG RUIXIAO, ZOU WEI, HE XIAOCAI, DIAO WEIZHI, YAN SEN
Принадлежит:

The invention discloses a method for improving the grade of beta-naphthol cobalt slag through pressurized alkaline leaching, which comprises the steps of pressurized alkaline leaching and post-treatment: adding a sodium hydroxide solution into cobalt slag, uniformly mixing, and carrying out alkaline leaching under the conditions that the temperature is 120-160 DEG C and the pressure is 0.2-0.6 Pa to obtain a material a; filtering the material a to obtain filtrate b and filter residue c; the filtrate b is enriched liquid and is subjected to water treatment, and the filter residue c is enriched cobalt residue. Specific alkalinity, temperature, pressure and time are adopted, the grade of cobalt in the alkaline leaching residues can be improved, and cobalt loss is small.

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Номер записи: 3
30-05-2023 дата публикации

Superfine metal powder centrifugal atomization device

Номер: CN116174734A
Автор: ZHAO QINGXU, ZHOU XIAN, YAO LIJIA, SUN YANHUA, LI HENG, LI YUGENG, BAO CHONGJUN, ZHANG YONGPING, ZHANG WEI, CHEN JINGGE, LI YUZHANG, FENG WEIGUANG, LEI HUAZHI, YAN SEN, DIAO WEIZHI
Принадлежит:

The invention discloses a superfine metal powder centrifugal atomization device which is characterized in that a liquid storage tank is communicated with a smelting furnace through a liquid discharge valve, the smelting furnace and/or the liquid storage tank are/is communicated with a hot air system through an air supply pipe, a liquid outlet pipe of the liquid storage tank penetrates through the top surface of a spray tower, a nozzle is fixed at the lower end of the liquid outlet pipe, and a plurality of inclined downward nozzles are uniformly distributed on the nozzle; a ring is coaxially fixed to the top face of the atomizing disc, a plurality of vertical grooves are evenly distributed in the inner side wall of the ring, the upper portions of the grooves penetrate through the top face of the ring, and the lower portions of the grooves extend to the top face of the atomizing disc. The atomizing disc and a motor shaft of the motor are coaxially fixed, and the motor is fixed to the inner ...

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Номер записи: 4
30-06-2023 дата публикации

Method for enriching germanium from low-grade germanium material

Номер: CN116356162A
Автор: SHI HUIXIAN, HE XIAOCAI, LI YINA, REN JIUYANG, XU QINGXIN, YUAN YE, XU NA, WAYUYA, REN TING, XU YUAN, YUAN WEI, DIAO WEIZHI, YAN SEN, LI QING, ZHANG HUI
Принадлежит:

The invention discloses a method for enriching germanium from a low-grade germanium material. The method comprises the steps of pretreatment, material covering, brick making and calcination. The low-grade germanium material comprises low-grade germanium-containing copper concentrate, lignite, coal ash, smelting slag, lead zinc ore, smoke dust and the like. High-grade germanium smoke dust and ultralow-grade germanium molten slag are obtained after the raw materials are mixed into germanium-containing materials as auxiliary materials and are subjected to batching, material mixing, material covering, brick making and high-temperature calcination, and copper matte products can be obtained if the raw materials contain copper.

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Номер записи: 5
22-08-2023 дата публикации

Method for extracting germanium by acid burning

Номер: CN116623018A
Автор: HE XIAOCAI, SHI HUIXIAN, REN JIUYANG, XU NA, YUAN YE, XU QINGXIN, LI YINA, HE QIUGU, REN TING, XU YUAN, DIAO WEIZHI, YAN SEN, ZHANG HUI
Принадлежит:

The invention discloses a method for extracting germanium by acid burning, which comprises the steps of acid burning and post-treatment, and specifically comprises the following steps: adding acid into coal ash for size mixing to obtain a material a; heating the material a to 350-800 DEG C, and keeping the temperature for 10 minutes to 10 hours to obtain an acid melt b; grinding the acid melt b until the particle size of 200 meshes is greater than 60% to obtain a material c; distilling the material c to obtain residual slurry d and a distillation fraction e; hydrolyzing the distilled fraction e with a diluted hydrochloric acid solution, and then drying to obtain GeO2; according to the method, the trend of the metal element Ge is mainly controlled, effective extraction of Ge is achieved, the technological process is simple and easy to operate, the direct recovery rate of Ge is high, and economic benefits are remarkable.

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Номер записи: 6
23-06-2023 дата публикации

Composite refining alterant for casting aluminum-silicon alloy and application of composite refining alterant

Номер: CN116287836A
Автор: SUN YANHUA, FENG WEIGUANG, YUE YOUCHENG, XU FUSHUN, LI YUZHANG, LI YUGENG, BAO CHONGJUN, ZHANG YIJIE, CHEN JINGGE, LEI HUAZHI, ZHANG HUI, DIAO WEIZHI, CHEN YUE, ZHANG WEI, YAN SEN
Принадлежит:

The invention discloses a composite refining alterant for casting an aluminum-silicon alloy, which is characterized in that Al-10Sr, Al-10Y intermediate alloy and a titanium agent are used as the composite refining alterant, the adding proportion of Sr is 0.01-0.05% of the total mass of the aluminum alloy, the adding proportion of Y is 0.1-0.5% of the total mass of the aluminum alloy, and the adding proportion of Ti is 0.01-0.15% of the total mass of the aluminum alloy. The composite refining modifier treats an alloy melt, the modification effect is maintained for a long time, meanwhile, the air suction reaction caused by traditional Al-Sr modification is avoided, a heterogeneous nucleation core is more efficiently formed in the melt, alpha-Al grains are finer, eutectic Si is in a fiber shape or a coralline shape, and therefore the alloy performance is improved. And the microstructure of the cast aluminum-silicon alloy is obviously improved, and the mechanical property of the product is ...

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Номер записи: 7
13-06-2023 дата публикации

Gel material prepared from arsenic-containing solid waste as well as preparation method and application of gel material

Номер: CN116253539A
Автор: ZHOU XIAN, BAO CHONGJUN, SUN YANHUA, ZHAO QINGXU, YAO LIJIA, LI HENG, YUE YOUCHENG, CHEN JINGGE, LI YUZHANG, FENG WEIGUANG, LIANG ZHI, CUI JIAN, YAN SEN, DIAO WEIZHI
Принадлежит:

The invention discloses a gel material prepared from arsenic-containing solid waste as well as a preparation method and application of the gel material. The gel material prepared from the arsenic-containing solid waste is prepared by taking the arsenic-containing solid waste and waste residues as raw materials through the steps of ultrasonic oil bath, iron-containing phase lifting and sintering. The problems that the arsenic adsorption effect in sewage is poor, arsenic is difficult to remove, the treatment difficulty is large, the cost is high, a large amount of arsenic-containing solid waste in the environment cannot be treated, the environment is polluted due to stockpiling and the like are solved, meanwhile, the arsenic-containing solid waste is utilized to form a binding material to serve as a base body, the solid waste is utilized, and waste is treated with waste.

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Номер записи: 8
27-06-2023 дата публикации

Method for recovering cobalt from zinc hydrometallurgy cadmium-poor liquid

Номер: CN116334406A
Автор: LIU JUNCHANG, MOU XINGBING, FU WEIQIN, ZOU WEI, XIE GANG, HE XIAOCAI, DIAO WEIZHI, XU FUSHUN, WANG KUN, YANG RUIXIAO, YAN SEN
Принадлежит:

The invention discloses a method for recovering cobalt from zinc hydrometallurgy cadmium-poor liquid, which belongs to the technical field of non-ferrous metallurgy and comprises the following steps: oxidizing and precipitating cobalt and manganese in the cadmium-poor liquid by manganate, returning the liquid after cobalt precipitation to a zinc system, washing cobalt and manganese residues with weak acid, returning pickling water to a zinc smelting process, washing the cobalt and manganese residues, mixing the washed cobalt and manganese residues with alkali, and oxidizing and roasting. Cobalt and manganate are separated from the roasted product through weak alkali leaching, the solution is returned to be used for oxidizing and precipitating cobalt and manganese in the cadmium-poor solution or serves as an oxidizing agent to be used in the zinc smelting iron removal process, alkali washing water is returned to the roasted product to be subjected to weak alkali leaching after slag water ...

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Номер записи: 9
23-05-2023 дата публикации

Method for enriching germanium from low-concentration germanium-containing zinc oxide smoke leachate

Номер: CN116144953A
Автор: FU WEIQIN, LIU JUNCHANG, ZOU WEI, MOU XINGBING, YANG NI, XIE GANG, HE XIAOCAI, LI XIAOYING, WANG KUN, DIAO WEIZHI, YANG RUIXIAO
Принадлежит:

The invention discloses a method for enriching germanium from a low-concentration germanium-containing zinc oxide smoke dust leaching solution. Belongs to the technical field of hydrometallurgy. The germanium is enriched by adopting a reduction-neutralization precipitation-low acid leaching method, and the method specifically comprises the following steps: adding a reducing agent into a zinc oxide smoke dust leaching solution for reduction to obtain a reduced solution, adding 10-30g/L of a neutralizing agent for reaction, after the reaction is finished, carrying out liquid-solid separation to obtain a neutralized solution and neutralized germanium slag, and returning the neutralized solution to a zinc hydrometallurgy main system to recover zinc. And the neutralized germanium slag and a sulfuric acid solution are mixed for size mixing, after the reaction is finished, liquid-solid separation is carried out to obtain leaching slag and germanium-rich leaching liquid, the leaching slag returns ...

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Номер записи: 10
23-06-2023 дата публикации

Medicament H-HJ01 for activating germanium as well as preparation method and application of medicament H-HJ01

Номер: CN116287791A
Автор: HE XIAOCAI, SHI HUIXIAN, XU QINGXIN, LI YINA, YUAN YE, REN JIUYANG, WAYUYA, XU NA, REN TING, XU YUAN, YUAN WEI, DIAO WEIZHI, YAN SEN, LI QING, ZHANG HUI
Принадлежит:

The invention discloses an agent H-HJ01 for activating Ge as well as a preparation method and application of the agent H-HJ01. The agent H-HJ01 for activating Ge is prepared from raw materials including sulfur dioxide, sodium hydroxide, yellow phosphorus and sodium chloride through complex reaction. The preparation method of the agent H-HJ01 for activating Ge comprises the steps of complex reaction, reduced pressure distillation, cooling crystallization and air cooling drying treatment. The application is the application of the agent H-HJ01 for activating Ge in enrichment of low-grade germanium ore. The agent H-HJ01 for activating Ge can effectively improve the recovery rate of Ge enriched by a pyrogenic process, lays a foundation for preparing germanium chemicals, and is applied to germanium enriched by a germanium-containing copper concentrate pyrogenic process, and the comprehensive recovery rate of germanium is greater than 95%.

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Номер записи: 11
04-08-2023 дата публикации

Comprehensive recovery and beneficiation method for skarn type zinc-tin-copper-iron polymetallic sulfide ore

Номер: CN116532233A
Автор: LYU CHAO, LIANG YIQIANG, JIAN SHENG, XIE FENG, ZHANG JING, QIAO JIBO, MA YUANLIN, YANG FANG, KAN SAIQIONG, SONG TAO, YAN SEN, DIAO WEIZHI
Принадлежит:

The invention discloses a skarn type zinc-tin-copper-iron multi-metal sulfide ore comprehensive recovery beneficiation method. The method comprises the steps of first-stage ore grinding, sulfur rapid flotation, copper-sulfur mixed separation, copper-sulfur separation, zinc sulfide flotation, low-intensity magnetic separation iron separation, cassiterite multi-stage reselection and cassiterite flotation. The method adapts to the characteristics that skarn cassiterite multi-metal minerals are large in floatability difference and complex in mineral variety, and has the advantages of being excellent in separation index, low in treatment cost and good in applicability.

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Номер записи: 12
25-08-2023 дата публикации

Method for extracting germanium from hard zinc

Номер: CN116640938A
Автор: HE XIAOCAI, SHI HUIXIAN, YUAN YE, REN JIUYANG, XU NA, XU QINGXIN, LI YINA, HE QIUGU, REN TING, XU YUAN, DIAO WEIZHI, YAN SEN, ZHANG HUI
Принадлежит:

The invention discloses a method for extracting germanium in hard zinc, which comprises the following steps: adding hard zinc into a slag former, and remelting and slagging at high temperature to obtain a metal layer and a slag layer. Then, the slag layer is subjected to crushing, water leaching, washing and filtering treatment, and water leaching washing slag and water leaching mixed liquid (water leaching liquid and water leaching slag washing liquid) are obtained; acid leaching is carried out on the water leaching washing residues, and acid leaching washing residues and acid leaching mixed liquid (acid leaching liquid and acid leaching residue washing liquid) are obtained after washing and filtering are carried out; after neutralization reaction of the water leaching mixed solution and the acid leaching mixed solution, filtering to obtain neutralized slag and neutralized solution, dissolving the neutralized slag with HCl, distilling, hydrolyzing and calcining to obtain GeO2; and the ...

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Номер записи: 13
25-07-2023 дата публикации

Method for treating arsenic in arsenic-containing solution by using zinc oxide smoke dust

Номер: CN116479245A
Автор: LIU JUNCHANG, ZOU WEI, MOU XINGBING, FU WEIQIN, XIE GANG, DIAO WEIZHI, HE XIAOCAI, WANG KUN, YANG RUIXIAO, YAN SEN
Принадлежит:

The invention discloses a method for treating arsenic in an arsenic-containing solution by using zinc oxide smoke dust. According to the method, liquid obtained after germanium precipitation of zinc oxide smoke dust leaching liquid is used as a raw material. Zinc oxide smoke dust is used as a neutralizer, potassium permanganate is used as an oxidizing agent, and a two-section countercurrent neutralization process is adopted, so that the zinc hydrometallurgy iron slag is reduced from the source. Researches show that the arsenic content of the solution is reduced to 8.60 mg/L from 719.20 mg/L, the arsenic removal rate reaches 98.83%, and the slag content is reduced to 8g/L under the conditions that the zinc oxide smoke consumption is 5g/L, the reaction temperature is 80 DEG C and the neutralization reaction time is 1h. And the slag is treated by an Isa furnace lead smelting system, so that the recovery of valuable metals such as zinc, lead and germanium and the centralized treatment of arsenic ...

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Номер записи: 14
09-06-2023 дата публикации

Preparation method of Pb-Ag-Ca-Sr-Ce anode plate for zinc hydrometallurgy electrodeposition

Номер: CN116240410A
Автор: LI YUGENG, YANG XIAOXIAO, SUN YANHUA, LI YUZHANG, LEI HUAZHI, YUE YOUCHENG, FENG WEIGUANG, ZHANG YONGPING, LIANG ZHI, BAO CHONGJUN, DIAO WEIZHI, CHEN XIN, BAO ZHIQUN, TAN GUOYIN, ZHAO QINGXU, YAN SEN
Принадлежит:

The invention discloses a preparation method of a Pb-Ag-Ca-Sr-Ce anode plate for zinc hydrometallurgy electrodeposition. The Pb-Ag-Ca-Sr-Ce anode plate is prepared from the following raw materials in percentage by mass: 1.5-2.5% of Ca, 0.5-1.5% of Sr, 25-35% of Ag, 0.5-1.5% of Ce and the balance of Pb through the steps of intermediate alloy preparation, casting and aftertreatment. The lead-silver anode is applied to the zinc hydrometallurgy electrodeposition process, and compared with a traditional lead-silver anode, the effects of reducing the cell voltage, improving the plate surface strength, prolonging the service life and reducing the lead content of a cathode zinc sheet are achieved.

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Номер записи: 15
23-05-2023 дата публикации

Preparation method of lead-silver mixed rare earth multicomponent alloy anode plate for zinc hydrometallurgy electrodeposition

Номер: CN116144976A
Автор: LI YUGENG, YANG XIAOXIAO, SUN YANHUA, LI YUZHANG, LEI HUAZHI, YUE YOUCHENG, FENG WEIGUANG, ZHANG YONGPING, LIANG ZHI, BAO CHONGJUN, DIAO WEIZHI, CHEN XIN, BAO ZHIQUN, TAN GUOYIN, ZHAO QINGXU, YAN SEN
Принадлежит:

The invention discloses a preparation method of a lead-silver mischmetal multi-component alloy anode plate for zinc hydrometallurgy electrodeposition, the lead-silver mischmetal multi-component alloy anode plate is prepared from the following raw materials in percentage by mass: 5-8% of mischmetal, 0.25-0.35% of Ag and the balance of Pb through the steps of intermediate alloy preparation, casting and post-treatment, the lead-silver mischmetal multi-component alloy anode plate is applied to the zinc hydrometallurgy electrodeposition process, and compared with a traditional lead-silver anode, the lead-silver mischmetal multi-component alloy anode plate has the advantages that the production cost is reduced, and the production efficiency is improved. And the effects of reducing the cell voltage, improving the plate surface strength, prolonging the service life and reducing the lead content of the cathode zinc sheet are achieved.

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Номер записи: 16
06-06-2023 дата публикации

Method for improving chromium reduction precipitation rate

Номер: CN116212781A
Автор: MOU XINGBING, LIU JUNCHANG, FU WEIQIN, ZOU WEI, DIAO WEIZHI, WANG KUN, YANG RUIXIAO, YAN SEN
Принадлежит:

The invention discloses a method for improving the reduction precipitation rate of chromium, which is characterized in that ultrasonic waves are adopted to assist sulfur to reduce sodium chromate, and factors such as a sulfur adding mode, sulfur dosage, NaOH concentration, reduction temperature and the like have influences on the reduction precipitation rate of chromium and the utilization rate of sulfur. Results show that under the better process conditions that the use amount of sulfur is 1.05 times of the theoretical amount, the reduction temperature is 80 DEG C, the reaction time is 180 min and the NaOH concentration is 15 g/L, the chromium precipitation rate is 98.82%, the sulfur utilization rate is 99.82%, the content of Cr in a reduction product is 47.53%, the content of S is 0.073%, and the chromium precipitation liquid Crlt is reduced; the concentration of Cr in the discharged wastewater is 0.5 mg/L, and meets the requirement of the wastewater discharge standard GB21900-2008 on ...

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Номер записи: 17
15-08-2023 дата публикации

Method for preparing nano silver powder

Номер: CN116586604A
Автор: LI YINA, XU QINGXIN, SHI HUIXIAN, HE XIAOCAI, YUAN YE, REN JIUYANG, REN TING, WAYUYA, XU NA, XU YUAN, DIAO WEIZHI, YAN SEN, ZHANG HUI, XU YAFEI
Принадлежит:

The invention discloses a method for preparing nano silver powder, and belongs to the field of silver oxide material preparation. Comprising the following steps: preparing and purifying a silver nitrate solution, preparing an alkali solution, preparing an emulsifier solution, preparing a surfactant solution, adding the emulsifier solution and the surfactant solution into the silver nitrate solution under a stirring condition, uniformly dispersing, dropwise adding the alkali solution into the mixed solution, and uniformly stirring, thereby obtaining the silver-loaded surfactant. And after the neutralization reaction precipitation is finished, washing and vacuum drying are performed to prepare the high-purity nano silver oxide powder material. The particle size of the silver oxide prepared by the method is 40-80nm, the morphology can be spheroidized, and the impurity content is Nblt; the content of other impurities is less than 1t; the method is relatively short in process flow, and can be ...

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Номер записи: 18
09-06-2023 дата публикации

Method for improving modification effect of A356 alloy

Номер: CN116240418A
Автор: FENG WEIGUANG, YUE YOUCHENG, SUN YANHUA, XU FUSHUN, QUE YUNPENG, BAO CHONGJUN, LI YUZHANG, LI YUGENG, ZHANG YIJIE, ZHOU XIAN, ZHANG HUI, DIAO WEIZHI, LEI HUAZHI, ZHAO QINGXU, CHEN XIN, YAN SEN
Принадлежит:

The invention discloses a method for improving the modification effect of an A356 alloy, which comprises the following steps: smelting and refining the A356 alloy to obtain an A356 alloy melt; al-10Sr and Al-10Y intermediate alloys are used as composite refining modifiers, the use amount of Sr accounts for 0.02-0.06% of the total mass of the aluminum alloy, and the use amount of Y accounts for 0.1-0.5% of the total mass of the aluminum alloy; and after refining and slagging-off, casting into a mold to obtain a cast aluminum-silicon alloy product. According to the method, the alloy melt is treated by adding the composite refining modifier, the modification effect is maintained for a long time, meanwhile, the air suction reaction caused by traditional Al-Sr modification is avoided, a heterogeneous nucleation core is more efficiently formed in the melt, grains are finer, eutectic Si is in a particle shape or a long-strip shape or a local net shape, and the eutectic Si is more uniform. And ...

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Номер записи: 19
22-08-2023 дата публикации

Method for extracting germanium through alkali burning, water leaching and acid burning

Номер: CN116623017A
Автор: SHI HUIXIAN, HE XIAOCAI, LI YINA, XU QINGXIN, XU NA, YUAN YE, REN JIUYANG, HE QIUGU, REN TING, XU YUAN, DIAO WEIZHI, YAN SEN, ZHANG HUI
Принадлежит:

The invention discloses a method for extracting germanium by alkali burning, water leaching and acid burning, which comprises the following steps: adding coal ash into alkali, melting and calcining, and then carrying out crushing, water leaching, washing and filtering treatment on an alkali melting material to obtain washing slag I and washing liquid I; adding acid into the washing residue I, melting and calcining, then crushing and distilling the acid burning material to obtain a distillation fraction II and residual slurry, and filtering and washing the residual slurry to obtain washing residue II and washing liquid III; and hydrolyzing the distillation fraction II, and drying to obtain GeO2. The washing liquid III and the washing liquid I are neutralized and precipitated to obtain neutralized residues III and neutralized liquid IV, the neutralized liquid IV is used as washing liquid for water leaching residue washing and residual slurry residue washing, and the neutralized residues III ...

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Номер записи: 20
22-08-2023 дата публикации

Method for distilling and extracting germanium

Номер: CN116623019A
Автор: SHI HUIXIAN, HE XIAOCAI, XU QINGXIN, XU NA, YUAN YE, REN JIUYANG, LI YINA, REN TING, HE QIUGU, XU YUAN, DIAO WEIZHI, YAN SEN, ZHANG HUI
Принадлежит:

The method comprises the steps of distillation and post-treatment, and specifically comprises the following steps: adding hydrochloric acid and an additive into coal ash, and mixing to obtain a material a; distilling the material a to obtain residual slurry b and a distillation fraction c; hydrolyzing the distillation fraction c with a diluted hydrochloric acid solution, and then drying to obtain GeO2; filtering and washing the residual slurry b to obtain washing slag e and a residual slurry mixed solution f; the residual slurry mixed liquid f is composed of distillation residual liquid and residue washing liquid; adding alkali into the washing slag e, then carrying out normal-pressure or pressurized alkaline leaching, then filtering and washing to obtain washing slag g and an alkaline leaching mixed solution h, and neutralizing the alkaline leaching mixed solution h and the residual slurry mixed solution f to obtain neutralized slag and a neutralized solution; returning the neutralized ...

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Номер записи: 21
09-06-2023 дата публикации

Method for improving performance of cast aluminum-silicon alloy

Номер: CN116240417A
Автор: FENG WEIGUANG, XU FUSHUN, SUN YANHUA, QUE YUNPENG, YUE YOUCHENG, BAO CHONGJUN, LI YUZHANG, LI YUGENG, ZHANG YIJIE, ZHOU XIAN, ZHANG HUI, DIAO WEIZHI, CHEN XIN, LEI HUAZHI, ZHAO QINGXU, YAN SEN
Принадлежит:

The invention discloses a method for improving the performance of a cast aluminum-silicon alloy, which comprises the following steps of: smelting and refining the aluminum-silicon alloy to obtain an aluminum-silicon alloy melt; al-10Sr and Al-10Y intermediate alloys are used as composite refining modifiers, the use amount of Sr accounts for 0.02-0.06% of the total mass of the aluminum alloy, and the use amount of Y accounts for 0.1-0.5% of the total mass of the aluminum alloy; and after refining and slagging-off, casting into a mold to obtain a cast aluminum-silicon alloy product. According to the method, rapid smelting of the aluminum-silicon alloy is achieved through process optimization, the composite refining modificator is added to treat the alloy melt, the air suction reaction caused by traditional Al-Sr modification is avoided while the modification effect is maintained for a long time, a heterogeneous nucleation core is formed in the melt more efficiently, and the aluminum-silicon ...

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Номер записи: 22
28-07-2023 дата публикации

Comprehensive recycling method for germanium concentrate chloridizing and germanium steaming residual liquid

Номер: CN116497220A
Автор: MOU XINGBING, LIU JUNCHANG, FU WEIQIN, ZOU WEI, DIAO WEIZHI, XIE GANG, WANG KUN, YANG RUIXIAO
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The invention discloses a comprehensive recycling method for germanium concentrate chloridizing and germanium steaming residual liquid, and belongs to the technical field of hydrometallurgy. The comprehensive recycling method comprises the following steps that the germanium steaming residual liquid is subjected to secondary distillation, germanium-containing hydrochloric acid fraction is used for absorbing sulfating evaporation fraction and tail gas, distillation mother liquor is subjected to selective precipitation to recycle antimony, and the germanium concentrate chloridizing and germanium steaming residual liquid is obtained. Removing calcium from the liquid after antimony precipitation by using sulfate, removing iron by using lead-oxidation neutralization, and performing external co-treatment on calcium and iron slag; directly evaporating the iron-removed solution to concentrate the zinc-containing solution, slowly adding zinc sulfate crystallization mother liquor or concentrated sulfuric ...

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Номер записи: 23