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

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Применить Всего найдено 14. Отображено 14.
03-03-2004 дата публикации

一水硬铝石型铝土矿反浮选脱硅方法

Номер: CN0001140355C
Принадлежит:

... 一水硬铝石型铝土矿反浮选脱硅方法。本发明利用浮选药剂和一定的工艺提高一水硬铝石表面与铝硅酸盐矿物特别是高岭石、伊利石和叶腊石等的表面亲水/疏水性质的差异,采用反浮选方法进行一水硬铝石型铝土矿的脱硅,实现一水硬铝石型铝土矿反浮选脱硅。采用本发明处理铝硅比4-6的铝土矿,浮选精矿铝硅比可达10以上,Al#-[2]O#-[3]回收率为80%以上。 ...

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18-04-2023 дата публикации

Method for promoting leaching of copper sulphide ore by using pyrite leachate

Номер: CN115976334A
Принадлежит:

The invention discloses a method for promoting leaching of copper sulphide ore by using pyrite leachate, and belongs to the technical field of biological metallurgy, the method comprises the step of promoting leaching of the copper sulphide ore by using the pyrite leachate in the leaching process of the copper sulphide ore, and the copper leaching rate can be increased by 50%-75%. Pyrite is a sulphide mineral which is most widely distributed in earth crust, is often associated with copper sulphide ore, and is easy to obtain and low in cost. The use of chemical agents in the leaching process of the copper sulphide ore can be reduced by using the pyrite leaching solution. According to the method, the copper leaching rate of the copper sulfide ore can be increased, the pyrite solid waste is reduced, and the method has important significance for improving the copper sulfide ore leaching efficiency and guaranteeing copper resource supply in China.

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04-07-2023 дата публикации

Efficient lithium extraction method for clay type lithium ore

Номер: CN116377246A
Принадлежит:

The invention discloses an efficient lithium extraction method for clay type lithium ore. The method comprises the following steps: 1) crushing and screening the clay type lithium ore to obtain a fine-grained material; (2) grinding the fine-grained material obtained in the step (1), adding organic acid salt in the grinding process, and adjusting grinding parameters to obtain a material to be leached; and (3) the materials to be leached are leached, parameters such as the liquid-solid ratio or the ore pulp mass concentration, the pH value and the temperature are adjusted in the leaching process, after leaching is balanced, solid-liquid separation is conducted on the ore pulp, and leaching liquid rich in lithium ions can be obtained. The obtained leaching solution rich in lithium ions can be used for further recovering lithium through various modes such as precipitation, extraction and adsorption. According to the method, the low-grade clay type lithium ore can be directly treated under the ...

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03-05-2012 дата публикации

BACTERIAL LIQUID OF MICROBIAL COMBINATIONS FOR BIOMETALLURGICAL LEACHING OF COPPER ORE AND METHOD FOR RECOVERING METALLIC COPPER THEREFROM

Номер: WO2012055167A1
Принадлежит:

Disclosed is a bacterial liquid of microbial combinations for biometallurgical leaching of copper ore and a method for recovering metallic copper therefrom. A microbial leaching combination, after undergoing adaptive culture, continuous amplification culture and ore heap adaptive culture, is used for leaching, with different leaching methods being applied for different ore types, these methods comprising biometallurgical processing methods for lump ore, ore fines, ore tailings and copper smelting-furnace slag. The standard leachate so obtained renders two products, being subjected to extraction-electrotwinning to obtain cathode copper and to short-process replacement to obtain sponge copper. The method is suitable for industrial production under different conditions while enabling high-efficiency exploitation of low-grade copper ores and protection of the ecological environment of mining areas, thus being favorable for economic and environmental reasons.

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01-09-2004 дата публикации

硫化矿浸矿菌株的原生质体融合技术

Номер: CN0001164746C
Принадлежит:

... 本发明涉及一种硫化矿浸矿菌株的原生质体融合技术。本发明采用双灭活原生质体融合技术,将氧化亚铁的氧化亚铁微螺菌、氧化还原硫的氧化硫硫杆菌以及对亚铁和还原硫都具有氧化能力的氧化亚铁硫杆菌分别进行原生质体融合,获得融合重组细菌。与基因工程技术相比,本发明技术相对简单,周期短、成本低;而与诱变育种比较,融合菌株的遗传性状改变显著,可以使融合细菌获得多种所需要的优良性状;本发明筛选出的融合细菌兼具两种亲本细菌的性状且能够稳定遗传,具有较强的氧化亚铁和氧化还原硫的能力,特别适合于低品位黄铜矿等难处理硫化矿的处理。 ...

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15-08-2023 дата публикации

Method for leaching ion adsorption type rare earth ore and/or tailings thereof through acidophilic microorganisms

Номер: CN116590546A
Принадлежит:

The invention discloses a method for leaching ion adsorption type rare earth ore and/or tailings thereof through acidophilic microorganisms, and belongs to the technical field of biological metallurgy. Under the condition that iron-containing metal sulfide ore such as pyrite is added, acidophilic iron sulfur oxidizing microorganisms such as acidophilic thiobacillus ferrooxidans are used for leaching ion adsorption type rare earth ore and/or tailings thereof, and the rare earth leaching rate can be remarkably increased. Not only can rare earth in the ion exchange phase be recovered, but also most of rare earth in the colloid deposition phase and the mineral phase can be recovered. According to the method, the recovery rate of the rare earth in the ion adsorption type rare earth ore and/or the tailings of the ion adsorption type rare earth ore can be remarkably increased, and great significance is achieved for green and efficient recovery of rare earth resources.

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23-06-2023 дата публикации

Biological extraction method of clay type lithium ore

Номер: CN116287774A
Принадлежит:

The invention discloses a biological extraction method of clay type lithium ores, which comprises the following steps: 1) inoculating microorganisms into a biological culture medium, and directionally regulating and controlling microbial metabolism to obtain a fermentation stock solution rich in microbial metabolites; 2) centrifugally separating the fermentation stock solution, taking supernate as a metabolite stock solution, adding alkali to adjust the pH value, evaporating water, concentrating, crystallizing, filtering and drying to obtain a solid microbial metabolite; and (3) the clay type lithium ore is subjected to ore grinding, the microbial metabolite is added in the ore grinding process, a to-be-leached raw material is obtained after ore grinding, leaching parameters are adjusted for leaching, and a lithium-containing leaching solution is obtained. According to the method, the low-grade clay type lithium ore is directly treated under the conditions of normal temperature and normal ...

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06-10-2004 дата публикации

可溶性锡盐用作低品位黄铜矿型硫化铜矿细菌浸出的催化剂的用途

Номер: CN0001169978C
Принадлежит:

... 一种低品位黄铜矿型硫化铜矿细菌浸出用催化剂。本发明采用阳离子型催化剂对细菌浸矿过程进行强化,所述的阳离子型催化剂为可溶性锡盐,加入量为0.5g~0.05gSn/t矿。采用本发明可以提高铜的浸出速度和浸出率。在较低的锡离子用量下,可提高铜浸出率25%左右;当锡离子添加量达到0.32gSn/t矿时,催化效果非常显著,提高铜浸出率达50%,并且“滞后期”缩短4天。 ...

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01-09-2004 дата публикации

用高岭土制备分子筛介孔复合材料的方法

Номер: CN0001524789A
Принадлежит:

The invention belongs to the field of inorganic non-metallic material, in particular a process for preparing molecular sieve hole composite material from common porcelain clay, wherein porcelain clay is pretreated at a reaction temperature of 400-900 deg. C and processing time of 0.5-3h, the pre-processed porcelain clay is carried through two stage thermal crystallization, then the molecular sieve hole composite material precursor is in incandesce for 6-18h in Muffle furnace, with the incandesce temperature of 300-600 deg. C, thus obtaining porous composite material with larger specific surface area, fine crystallization performance and 4A molecular sieve arrangement.

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18-04-2023 дата публикации

Method for selectively extracting lithium from sedimentary lithium ore through solid-phase reaction

Номер: CN115976339A
Принадлежит:

The invention discloses a method for selectively extracting lithium from sedimentary lithium ore by utilizing a solid-phase reaction, which comprises the following steps: 1) crushing and screening the sedimentary lithium ore to obtain fine-fraction raw ore; (2) carrying out solid-phase reaction on the fine-fraction raw ore and a solid-phase reaction reagent to obtain a material to be dissolved; and 3) dissolving the to-be-dissolved material, adjusting parameters such as liquid-solid ratio, pH and temperature in the dissolving process, and performing solid-liquid separation after dissolving to obtain a lithium-rich solution. The lithium-rich solution can be used for further recovering lithium by means of precipitation, adsorption, extraction and the like. According to the method, the low-grade sedimentary lithium ore can be directly treated under the conditions of normal temperature and normal pressure, the selected reagent has the advantages of low cost, wide source, high efficiency and ...

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15-08-2023 дата публикации

Method for treating acid mine wastewater from source

Номер: CN116586405A
Принадлежит:

The invention discloses a method for treating acid mine wastewater from a source, and belongs to the field of mine environment treatment. The method comprises the step of carrying out biological leaching on the pyrite-containing waste rocks or flotation tailings. After biological leaching, more than 60% of iron and sulfur in the waste rocks or tailings can be removed, and meanwhile, functional microorganisms can induce generation of jarosite and passivation of residual pyrite in the waste rocks or tailings, so that secondary dissolution of the residual pyrite is inhibited, and the risk of generation of acidic mine wastewater in subsequent stockpiling is greatly reduced. And the biological leaching operation is simple, low in cost and environment-friendly. The method can solve the problem of acidic mine wastewater pollution generated by pyrite-containing waste rocks or tailings from the source, and has important significance on harmless treatment of pyrite-containing waste rocks or flotation ...

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22-08-2023 дата публикации

Method for efficiently leaching chalcopyrite through two stages of reduction and oxidation

Номер: CN116623001A
Принадлежит:

The invention relates to a reduction-oxidation two-stage high-efficiency chalcopyrite leaching method based on potential regulation and control, which comprises the following steps: mixing chalcopyrite and/or flotation copper concentrate with copper powder, adding acid for pulp mixing to obtain ore pulp A, then carrying out first-stage reduction leaching to obtain leachate and reducing slag, carrying out pulp mixing on the reducing slag, adding an oxidizing agent at the same time to obtain ore pulp B, and carrying out first-stage reduction leaching on the ore pulp B; carrying out two-stage oxidation leaching to obtain a copper leaching solution and leaching residues; in the first-stage reduction leaching process, when the potential in a first-stage reduction leaching system is lower than 0.14 V, hydrogen sulfide gas generated in the first-stage reduction leaching process is extracted by inflating and exhausting at the same time; in the second-stage oxidation leaching process, when the potential ...

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23-06-2023 дата публикации

Method for treating acid mine wastewater by biologically passivating waste rock source containing sulphide ore

Номер: CN116274298A
Принадлежит:

The invention discloses a method for treating acid mine wastewater by biologically passivating a waste rock source containing sulphide ore, which belongs to the field of mine environment governance and comprises the following steps: inducing an additional iron source to form a passive film on the surface of the waste rock containing sulphide ore by using acidophilic microorganisms; therefore, the oxidation effect of oxygen, water and microorganisms on the sulfide ore-containing waste rocks is isolated, and the generation of acid mine wastewater is reduced. The external iron source is wide, the whole process is simple to operate, and the cost is low. According to the method, biological/chemical dissolution of the waste rock containing the sulfide ore can be inhibited, generation of the acid mine wastewater is reduced from the source, and the method has important significance on source treatment of the acid mine wastewater of coal mines and non-ferrous metal mines.

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15-08-2023 дата публикации

Method for asymmetrically preparing refined glufosinate-ammonium through multi-enzyme coupling one-pot method

Номер: CN116590374A
Принадлежит:

The invention relates to a method for asymmetrically preparing refined glufosinate-ammonium through a multi-enzyme coupling one-pot method. The reaction for asymmetrically preparing the refined glufosinate-ammonium comprises the following steps: in the same container, converting racemic D, L-glufosinate-ammonium into L-glufosinate-ammonium by using D-amino acid oxidase, L-glutamate dehydrogenase and formate dehydrogenase, simultaneously realizing the regeneration of reduced coenzyme, and eliminating the influence of by-products on the separation and purification of subsequent products. The method provided by the invention can realize green and efficient resolution of D, L-glufosinate-ammonium and large-scale industrial preparation of refined glufosinate-ammonium.

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