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Production process for leaching of cobalt from cobalt-containing water-quenched slag

A production process and technology for water quenching slag, applied in the field of production technology of leaching cobalt from water quenching slag, can solve the problems of complicated purification process, large consumption of impurity remover acid, etc.

Inactive Publication Date: 2014-06-25
赖世权
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of cobalt leaching by traditional acid method, a large amount of impurities enter the leaching solution, the purification process is complicated, and the consumption of impurity remover and acid is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] The cobalt-containing water-quenched waste slag and pulverized coal produced by a smelter were dried, ground, crushed, and sieved, respectively, and 50g of waste slag fine powder and 3g of fine coal fine powder were weighed, mixed with appropriate amount of water to granulate , Add 1g of lime as binder during the granulation process. After drying, put it into a graphite crucible for roasting, react at a reduction temperature of 800°C for 0.5h to 5h, take it out after the reaction is completed, and cool it at room temperature. Grind the resultant, take 10g of the substance, transfer it to an autoclave, and add ammonium sulfate, sodium peroxodisulfate, ammonia water, water, at an ammonium ammonia ratio of 3, a total ammonia concentration of 10%, a liquid-solid ratio of 5, and a reducing agent The amount of sodium persulfate (multiple of the content of low-priced cobalt) 7. Heat up to 120°C under the condition of continuous stirring. After the reaction, pour cooling water ...

Embodiment 2

[0010] The cobalt-containing water-quenched waste slag and pulverized coal produced by a smelter were dried, ground, crushed, and sieved, respectively, and 50g of waste slag fine powder and 3g of fine coal fine powder were weighed, mixed with appropriate amount of water to granulate , Add 2g of lime as binder during the granulation process. After drying, put it into a graphite crucible for roasting, react at a reduction temperature of 1200°C for 3 hours, take it out after the reaction is completed, and cool it at room temperature. Grind the resultant, take 10g of the substance, transfer it to an autoclave, and add ammonium sulfate, sodium peroxodisulfate, ammonia water, water, at an ammonium ammonia ratio of 4, a total ammonia concentration of 10%, a liquid-solid ratio of 3, and a reducing agent Dosage of sodium persulfate (multiple of low-priced cobalt content) 6. Heat up to 110°C in a sealed environment with constant stirring. After the reaction is completed, pour cooling wa...

Embodiment 3

[0012] The cobalt-containing water-quenched waste slag and pulverized coal produced by a smelter were dried, ground, crushed, and sieved, respectively, and 50g of waste slag fine powder and 3g of fine coal fine powder were weighed, mixed with appropriate amount of water to granulate , Add 1g of lime as binder during the granulation process. After drying, put it into a graphite crucible for roasting, react at a reduction temperature of 1000°C for 2 hours, take it out after the reaction is completed, and cool it at room temperature. Grind the resultant, take 10g of the substance, transfer it to an autoclave, and add ammonium sulfate, sodium peroxodisulfate, ammonia water, water, at an ammonium ammonia ratio of 5, a total ammonia concentration of 8%, a liquid-solid ratio of 3, and a reducing agent Dosage of sodium persulfate (multiple of low-priced cobalt content) 5. Heat up to 130°C in a sealed environment with constant stirring. After the reaction is completed, pour cooling wat...

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PUM

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Abstract

The invention provides a production process for leaching of cobalt from cobalt-containing water-quenched slag. The process comprises the following steps: respectively subjecting powdered coal and cobalt-containing water-quenched slag to drying, grinding, crushing, sieving, etc., then carrying out uniform mixing, adding water and carrying out granulation, wherein lime is added as a binder in the process of granulation; carrying out drying, then putting an obtained substance into a graphite crucible for roasting, carrying out a reaction for a period of time, taking a resultant out and cooling the resultant at room temperature; and triturating and grinding the resultant, taking a small amount of the ground resultant, transferring the ground resultant into an autoclave, adding a certain amount of ammonium sulfate, sodium persulfate, ammonia water and water, carrying out sealed heating with continuous stirring, introducing cooling water to cool the autoclave after completion of a reaction, opening the autoclave after cooling, subjecting an obtained material to filtering and separating by using a rotary-vane vacuum pump, washing leached slag with ammonia water and carrying out drying.

Description

technical field [0001] The invention relates to a production process for leaching cobalt from cobalt-containing water-quenching slag, in particular to a production process for leaching cobalt from water-quenching slag containing less other variable-value metals. Background technique [0002] Cobalt is an important strategic metal. Cobalt, cobalt alloys and their compounds are widely used in the fields of electronics, machinery, chemical industry, aviation and aerospace. With the development of industries such as batteries, hard alloys, and industrial catalysis, my country's cobalt consumption is increasing year by year. However, China's cobalt resources are relatively poor, and a large amount of metallic cobalt and cobalt-containing raw materials are imported every year. Cobalt in nature is mostly distributed in minerals such as sulfides, arsenides and oxides in the form of associates, and is mainly recovered as by-products when other metals are smelted. In the zinc hydrom...

Claims

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Application Information

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IPC IPC(8): C22B7/04C22B1/02C22B3/14C22B23/00
CPCY02P10/20
Inventor 赖世权
Owner 赖世权
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