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Method for recycling zinc and cobalt in wet-type smelting zinc purifying slag

A technology of zinc hydro-smelting and recovery method, which is applied in the recycling of zinc and cobalt purification slag from hydro-smelting zinc smelting, can solve the problems of waste of raw materials, etc., and achieve the reduction of usage and high efficiency The effect of reuse value and reasonable process design

Active Publication Date: 2018-12-11
HENAN YUGUANG ZINC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This process causes serious waste of raw materials

Method used

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  • Method for recycling zinc and cobalt in wet-type smelting zinc purifying slag

Examples

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Effect test

Embodiment 1

[0026] A method for recovering zinc and cobalt in zinc hydrometallurgy purification slag, the method comprises the following steps:

[0027] S1: Put the cadmium-deficient cobalt liquid solution produced in the cadmium-deficient cobalt precipitation tank after neutral leaching, primary replacement, and secondary replacement of the copper-cadmium slag purified in the first stage of zinc hydrometallurgy, to be treated;

[0028] Among them, the cadmium-depleted cobalt solution placed in the cadmium-depleted cobalt precipitation tank is 40m 3 , wherein the cobalt content is 0.089g / l, and the zinc content is 45.5g / l; S2: recover the cobalt-nickel slag produced in the second stage of zinc hydrometallurgy, and use the acid-containing 150-200g / l waste liquid produced in the electrolysis process to The cobalt-nickel slag is slurried (mixed and stirred), and slurried for 4 hours to obtain slurried pulp;

[0029] The slurried cobalt-nickel slag slurry is transported to the cadmium-poor c...

Embodiment 2

[0035] A method for recovering zinc and cobalt in zinc hydrometallurgy purification slag, the method comprises the following steps:

[0036] S1: Put the cadmium-deficient cobalt liquid solution produced in the cadmium-deficient cobalt precipitation tank after neutral leaching, primary replacement, and secondary replacement of the copper-cadmium slag purified in the first stage of zinc hydrometallurgy, to be treated;

[0037] Among them, the solution placed in the cadmium-poor cobalt precipitation tank is 35m 3 The content of cobalt in this cadmium-depleted cobalt liquid is 0.15g / l, and the content of zinc in the waste liquid is 53.8g / l;

[0038] S2: Recover the cobalt-nickel slag produced in the second stage of zinc hydrometallurgy, use the acidic waste liquid with an acidity of 150-200g / l to slurry the cobalt-nickel slag (mixing and stirring), and perform the slurrying reaction for 3 hours to obtain the slurry;

[0039] The slurried cobalt-nickel slag slurry is transported t...

Embodiment 3

[0045] A method for recovering zinc and cobalt in zinc hydrometallurgy purification slag, the method comprises the following steps:

[0046] S1: Put the cadmium-deficient cobalt liquid solution produced in the cadmium-deficient cobalt precipitation tank after neutral leaching, primary replacement, and secondary replacement of the copper-cadmium slag purified in the first stage of zinc hydrometallurgy, to be treated;

[0047] Among them, the cadmium-deficient cobalt solution placed in the cadmium-deficient cobalt precipitation tank is 30m 3 , the cobalt content in the cadmium-deficient cobalt liquid is 0.26g / l, and the content of zinc in the waste liquid is 55.6g / l;

[0048] S2: Recover the cobalt-nickel slag produced in the second stage of zinc hydrometallurgy, and use the acidic waste liquid with an acidity of 150-200g / l produced in the electrolysis process to slurry the cobalt-nickel slag (mixing and stirring), and the slurrying reaction is 3 hours. Obtain pulped ore pulp; ...

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Abstract

The invention discloses a method for recycling zinc and cobalt in wet-type smelting zinc purifying slag. The method adopting the technology comprises the following steps of firstly, removing the copper and cadmium in the copper and cadmium slag produced in the first stage of wet type smelting zinc purifying to obtain a lean-cadmium cobalt solution, and putting the lean-cadmium cobalt solution intoa lean-cadmium cobalt precipitating tank; then, pulping the cobalt and nickel slag in the purifying slag at the second stage, and mixing the pulped solution and the lean-cadmium cobalt solution in the lean-cadmium cobalt precipitating tank; under the existence of an activator, precipitating the cobalt in the lean-cadmium cobalt solution by zinc powder in the cobalt and nickel slag through certainreaction time and reaction temperature. The method has the advantages that the zinc powder in the cobalt and nickel slag is reutilized, the cobalt in the lean-cadmium cobalt precipitating solution isfully precipitated, the consumption amount of zinc powder is greatly reduced, and the production cost is reduced; the technology is simple and reasonable, the operation is easy, the waste slag can bewell recycled and reutilized, and the good application prospect is realized.

Description

technical field [0001] The invention belongs to the technical field of recovery and treatment of metal smelting slag, and in particular relates to a method for reusing zinc purification slag from hydrometallurgy, in particular to a method for recovering zinc and cobalt in zinc purification slag from hydrometallurgy. The purification slag is used instead of zinc powder to recover the cobalt in the cadmium-poor cobalt liquid, which not only realizes the reuse of the purification slag, but also realizes the recovery of zinc and cobalt in the purification slag. technical background [0002] Hydrometallurgy technology is a metal smelting method with low energy consumption, less pollution, low raw material grade, and high recovery rate of valuable metals. It plays an important role in the smelting fields of copper, lead, zinc and other metals. Among them, the world's hydro-smelting zinc production accounts for more than 70% of the total zinc production, while the domestic hydro-sm...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B19/20C22B23/00
CPCC22B7/006C22B19/26C22B23/0461C22B23/0469Y02P10/20
Inventor 朱志刚陈欢杨震张辉
Owner HENAN YUGUANG ZINC IND
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