Resource utilization method of wastewater slag of cobalt and nickel metallurgy

A technology for recycling waste water and slag, applied in chemical instruments and methods, applications, cobalt sulfate and other directions, can solve the problems of enrichment, non-conformity, difficult recycling, etc., and achieve the effect of high purity and high added value

Active Publication Date: 2018-12-11
唐山文丰资源综合利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Because there are many types of metals contained in it, and the content of each component is almost the same, it is difficult to recycle them all by conventional treatment processes. Generally, acid is dissolved and then sulfide is used to precipitate zinc, cobalt, nickel, copper, and others. The elements re-enter...

Method used

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  • Resource utilization method of wastewater slag of cobalt and nickel metallurgy
  • Resource utilization method of wastewater slag of cobalt and nickel metallurgy
  • Resource utilization method of wastewater slag of cobalt and nickel metallurgy

Examples

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Embodiment 1

[0042] A method for resource utilization of cobalt-nickel metallurgy waste water slag, comprising the following steps:

[0043] (1) Pretreatment, add water to the waste water and carry out ball milling in a ball mill, then add water for stirring and slurrying, then pour it into an autoclave, at a temperature of 185°C, feed hydrogen to maintain the pressure in the autoclave at 12 Under 1 atmospheric pressure, stir reaction 4.5 hours, then cool down and release pressure;

[0044] (2) The reacted material obtained in step (1) is carried out by gravity sorting with a gravity separator, and the metal particles and the slurry are sorted out, and the metal particles are separated by magnetic separation, and the nickel-cobalt-iron powder and copper The copper powder is separated, the copper powder is smelted to obtain a copper anode plate, and then the cathode copper is obtained through electrolytic refining, and the nickel-cobalt-iron powder is added to the phosphoric acid solution t...

Embodiment 2

[0062] A method for resource utilization of cobalt-nickel metallurgy waste water slag, comprising the following steps:

[0063] (1) Pretreatment, add water to the waste water and carry out ball milling in a ball mill, then add water for stirring and slurrying, then pour into the autoclave, at a temperature of 156 ° C, feed hydrogen to maintain the pressure in the autoclave at 11 Under 1 atmospheric pressure, stir reaction 4.5 hours, then cool down and release pressure;

[0064] (2) The reacted material obtained in step (1) is carried out by gravity sorting with a gravity separator, and the metal particles and the slurry are sorted out, and the metal particles are separated by magnetic separation, and the nickel-cobalt-iron powder and copper The copper powder is separated, the copper powder is smelted to obtain a copper anode plate, and then the cathode copper is obtained through electrolytic refining, the nickel-cobalt-iron powder is added to the phosphoric acid solution to di...

Embodiment 3

[0082] A method for resource utilization of cobalt-nickel metallurgy waste water slag, comprising the following steps:

[0083] (1) Pretreatment, add water to the waste water and carry out ball milling in a ball mill, then add water for stirring and slurrying, then pour it into an autoclave, at a temperature of 165°C, feed hydrogen to maintain the pressure in the autoclave at 12 Under 1 atmospheric pressure, stir reaction 4.2 hours, then cool down and release pressure;

[0084] (2) The reacted material obtained in step (1) is carried out by gravity sorting with a gravity separator, and the metal particles and the slurry are sorted out, and the metal particles are separated by magnetic separation, and the nickel-cobalt-iron powder and copper The copper powder is separated, the copper powder is smelted to obtain a copper anode plate, and then the cathode copper is obtained through electrolytic refining, the nickel-cobalt-iron powder is added to the phosphoric acid solution to di...

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Abstract

The invention discloses a resource utilization method of the wastewater slag of cobalt and nickel metallurgy. The method comprises the following steps of levigating a material through ball milling, then sieving, then reducing through high-pressure hydrogen to reduce nickel, cobalt, copper and the like therein into metal elements, wherein calcium, magnesium, manganese and the like are not reduced,then sorting through gravity to separating the metal elements such as nickel, cobalt and copper from other sizing agents to realize the separation of nickel, cobalt, copper and iron from other metals,then adopting magnetic separation to separate nickel, cobalt and iron from copper, smelting copper powder, then electrorefining to obtain cathode copper, then adding nickel, cobalt and iron powder inphosphoric acid to dissolve, adding hydrogen peroxide to obtain an iron phosphate precipitate, wherein nickel and cobalt are not oxidized so that the precipitation of nickel, cobalt and iron is realized, then extracting, performing reverse extraction by stages after extracting nickel and cobalt to realize the separation of nickel and cobalt, and enabling raffinate to be subjected to concentrationand crystallization to obtain an ammonium phosphate compound fertilizer. The method can be used for realizing the separation and recovery of all ingredients, the recovery rate is high, the finally obtained product has high purity, and the added value of the product is high.

Description

technical field [0001] The invention relates to a resource utilization method of cobalt-nickel metallurgy waste water slag, belonging to the technical field of waste treatment. Background technique [0002] As a strategic resource, the status of cobalt and nickel in the industry has been greatly improved. It is widely used in cemented carbide, functional ceramics, catalysts, military industry, and high-energy batteries. It is known as industrial monosodium glutamate. [0003] Especially with the development of new energy vehicles, lithium batteries based on ternary materials have developed rapidly. The annual demand for nickel-cobalt lithium manganese oxide has reached hundreds of thousands of tons, and the demand for nickel-cobalt metal has also reached tens of thousands of tons. [0004] The production of cobalt and nickel is mainly based on hydrometallurgy. [0005] In cobalt-nickel hydrometallurgy, every ton of cobalt-nickel produces 40-60 tons of waste water in the sme...

Claims

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Application Information

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IPC IPC(8): C22B1/00C22B7/00C22B15/14C22B19/20C22B19/30C22B47/00C22B21/00C22B26/22C01B25/37C01G45/02C01G51/10C01G53/10C04B33/04C04B33/13C04B33/138C05B7/00
CPCC01B25/375C01G45/02C01G51/10C01G53/10C01P2004/62C01P2006/11C01P2006/12C01P2006/80C04B33/04C04B33/13C04B33/138C04B2235/602C04B2235/656C04B2235/6567C04B2235/77C04B2235/96C05B7/00C22B1/005C22B7/001C22B7/007C22B15/0028C22B19/22C22B19/30C22B21/0007C22B21/0023C22B23/043C22B26/22C22B47/00Y02P10/20Y02P40/60
Inventor 郑忆依
Owner 唐山文丰资源综合利用有限公司
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