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Method for recovering copper, zinc, cobalt and nickel from various waste materials containing ferrous metals

A non-ferrous metal and copper recovery technology, applied in the direction of improving process efficiency, can solve the problems of incomplete separation of valuable metals, sulfide pollution of the environment, etc., and achieve the effect of less impurities, high purity, energy and cost saving

Active Publication Date: 2018-08-31
ZHEJIANG XINSHIDAI ZHONGNENG RECYCLING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sulfide roasting used will produce a large amount of sulfide to pollute the environment, and the separation of valuable metals is not complete

Method used

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  • Method for recovering copper, zinc, cobalt and nickel from various waste materials containing ferrous metals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] (1) Dissolving and leaching:

[0063] Mix 500kg of various waste materials containing non-ferrous metals, and measure the mass content of each metal, copper 2.10%, cobalt 0.56%, zinc 3.12%, iron 16.33%, nickel 1.88%. Grind the waste with a ball mill, the fineness should be below 200 mesh, then add it into 250kg of 30% sulfuric acid, add 5kg of sodium chlorate, stir at 40rpm, raise the temperature to 50°C for the first time, and react for leaching for 1 to 3 hours, then, Start to add 250kg of washing water from steps (2) and (4) dropwise, a large amount of heat will be generated, and the temperature should be controlled at 60°C. When the temperature is too high, use cooling water to cool down. The time for adding the washing water dropwise is 1-2 hours. After adding the washing water, stir for 2-3 hours, so that the soluble non-ferrous metals can be fully dissolved and leached.

[0064] (2), filter press:

[0065] Cool the dissolved leachate to below 50°C, press filter...

Embodiment 2

[0077] (1), Dissolving and leaching:

[0078] Mix 500kg of various waste materials containing non-ferrous metals, and measure the mass content of each metal, copper 2.10%, cobalt 0.56%, zinc 3.12%, iron 16.33%, nickel 1.88%. Grind the waste with a ball mill, the fineness should be below 200 mesh, then add it into 1000kg of 30% sulfuric acid, add 5kg of sodium chlorate, stir at 100rpm, raise the temperature to 50°C for the first time, and react for leaching for 1 to 3 hours, then, Start to add 2500kg of water in steps (2) and (4) dropwise, a large amount of heat will be generated, and the temperature should be controlled at 90°C. When the temperature is too high, use cooling water to cool down. The time for adding the washing water dropwise is 1-2 hours. After adding the washing water, stir for 2-3 hours so that the soluble non-ferrous metals can be fully dissolved and leached.

[0079] (2), filter press:

[0080] Cool the dissolved leachate to below 50°C, press filter, wash ...

Embodiment 3

[0092] (1), Dissolving and leaching:

[0093] Mix 500kg of various waste materials containing non-ferrous metals, and measure the mass content of each metal, copper 2.10%, cobalt 0.56%, zinc 3.12%, iron 16.33%, nickel 1.88%. Grind the waste with a ball mill, the fineness is required to be below 200 mesh, then add it to 500kg of 30% sulfuric acid, add 5kg of sodium chlorate, stir at 60rpm, raise the temperature to 50°C for the first time, and react for leaching for 1 to 3 hours, then, Start to add 1000kg of washing water from steps (2) and (4) dropwise, a large amount of heat will be generated, and the temperature should be controlled at 80°C. When the temperature is too high, use cooling water to cool down. The time for adding the washing water dropwise is 1-2 hours. After adding the washing water, stir for 2-3 hours so that the soluble non-ferrous metals can be fully dissolved and leached.

[0094] (2), filter press:

[0095] Cool the dissolved leachate to below 50°C, press...

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Abstract

The invention discloses a method for recycling copper, zinc, cobalt and nickel from various kinds of nonferrous metal containing waste. The method comprises the steps that nonferrous metal containing dead catalysts, waste battery materials and other waste raw materials are subjected to leaching dissolution by adding acid and an oxidizing agent, a solution containing nickel, cobalt, copper and zinc is subjected to copper extraction after filter pressing, and reverse extraction is carried out on the copper solution for electro deposited copper production; and P204 extraction is carried out after the raffinate is subjected to deironing treatment, reverse extraction galvanizing zinc is obtained, a zinc carbonate product is obtained through settlement and roughening, P507 nickel and cobalt separation is carried out on the raffinate, and a cobalt salt solution and a nickel salt solution are obtained and used for producing cobalt sulphate, nickel carbonate, electrolytic nickel and other products. Leaching residues and deironining slag obtained after filter pressing are dissolved and enter a waste slag removal treatment workshop for sintering treatment.

Description

technical field [0001] The invention relates to the field of resource recycling, in particular to the technology of recovering copper, zinc, cobalt and nickel from various waste materials containing ferrous metals. Background technique [0002] The metallurgical industry produces a large amount of solid waste every year, and these solid wastes contain valuable elements such as copper, cobalt, nickel, and zinc. Generally, copper and nickel slags contain copper from a few thousandths to ten percent or even higher, cobalt and nickel from a few thousandths to a few percent, and even more than 90% of the cobalt in the concentrate enters Smelting slag or blowing slag. The calcine neutral leaching slag and electric arc furnace dust of the wet zinc smelting plant contain 10% to 20% zinc. These metallurgical wastes not only have economic value because they contain valuable metals, but also are classified as hazardous wastes because of the existence of these elements. Due to the hu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B15/00C22B23/00C22B19/30
CPCC22B7/007C22B19/30Y02P10/20
Inventor 陶伟胜杜广荣马维华贾跃花
Owner ZHEJIANG XINSHIDAI ZHONGNENG RECYCLING TECH CO LTD
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