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Method for preparing ternary precursor material by recycling copper sulfide slag

A copper sulfide and precursor technology, applied in the field of nickel-cobalt hydrometallurgy, can solve the problems of low product added value, long processing flow, high energy consumption, etc., and achieve the effects of low product added value, long processing flow and simple process

Active Publication Date: 2019-03-29
江西赣锋循环科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned copper sulfide slag treatment method has the disadvantages of high requirements on equipment, long treatment process, low added value of products, high energy consumption, easy generation of waste gas to pollute the environment, and high labor intensity of workers.

Method used

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  • Method for preparing ternary precursor material by recycling copper sulfide slag
  • Method for preparing ternary precursor material by recycling copper sulfide slag
  • Method for preparing ternary precursor material by recycling copper sulfide slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Acidification: Add 300kg copper sulfide slag and 0.6m 3 The tap water is made into slurry, and the pH value of the slurry is adjusted to pH 1.0 with 55kg of sulfuric acid. Among them, the valuable metal components and their mass percentages in the copper sulfide slag are: Cu: 5.21%, Ca: 0.015%, Cd: 0.11%, Mg: 0.012%, Fe: 0.21%, Co: 3.31%, Ni: 11.63 %, Mn: 1.15%.

[0049] (2) Oxidative leaching: Add 42kg of sodium chlorate to the prepared slurry, keep the system temperature at 50°C, stir and react for 1.5h, then press filter to obtain 0.62m 3 Leaching solution and 45kg leaching residue. The analysis results of the leachate and leach residue are shown in Table 1.

[0050]Table 1 Analysis results of main components in leaching residue and leaching solution

[0051]

[0052] (3) Substitution of copper precipitation: Add 15kg of reduced iron powder to the leaching solution in step (2), control the reaction temperature at 30°C, react for 0.5h and filter to obtain 0...

Embodiment 2

[0067] (1) Acidification: Add 500kg copper sulfide slag and 2.5m 3 The tap water is made into slurry, and the pH of the slurry is adjusted to pH 1.0 with 82kg of sulfuric acid. Among them, the valuable metal components and their mass percentages in copper sulfide slag are: Cu: 2.63%, Ca: 0.025%, Cd: 0.01%, Mg: 0.015%, Fe: 0.18%, Co: 10.56%, Ni: 2.20 %, Mn: 1.20%.

[0068] (2) Oxidative leaching: Add 57kg of sodium chlorate and 24kg of hydrogen peroxide to the prepared slurry, keep the system temperature at 95°C, stir for 5 hours and press filter to obtain 2.6m 3 Leaching liquid and 102kg leach residue. The analysis results of leachate and leach residue are shown in Table 6.

[0069] Table 6 Analysis results of main components in leach residue and leach solution

[0070]

[0071] (3) Substitution of copper precipitation: add 20.5kg of reduced iron powder to the leaching solution, control the reaction temperature at 80°C, stir for 0.5h and filter to obtain 2.59m 3 After ...

Embodiment 3

[0086] (1) Acidification: Add 500kg copper sulfide slag and 2.5m 3 The tap water is made into a slurry, and the pH of the slurry is adjusted to pH 2.0 with 75kg of sulfuric acid. Among them, the main components and their mass percentages in the copper sulfide slag are: Cu: 4.86%, Ca: 0.31%, Cd: 0.21%, Mg: 0.055%, Fe: 0.93%, Co: 1.52%, Ni: 1.31%, Mn: 12.33%.

[0087] (2) Oxidative leaching: Add 93kg of sodium chlorate to the prepared slurry, keep the system temperature at 70°C, stir and react for 3.5h, then press filter to obtain 2.55m 3 Leaching liquid and 100kg leach residue. The analysis results of leachate and leach residue are shown in Table 11.

[0088] Table 11 Analysis results of main components in leach residue and leach solution

[0089] sample

Cu

co

Ni

mn

Cd

Ca

Mg

Fe

Leaching solution (g / L)

9.50

2.97

2.56

24.06

0.41

0.48

0.11

1.18

Leach residue / wt%

0.02

0.05

0.02

0.02

0...

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Abstract

The invention discloses a method for preparing a ternary precursor material by recycling copper sulfide slag. The copper sulfide slag is subjected to acidification, oxidation leaching, replacing and copper precipitating, iron removing, calcium and magnesium removing, cobalt-nickel-manganese extracting, nickel-cobalt-manganese precipitating and calcining to prepare the ternary precursor material; and according to the method, the defects that in the prior art, the requirement of leaching equipment is high, the processing flow is long, the product additional value is low, the energy consumption is large, and the waste gas is prone to generate to pollute the environment are overcome. The method has the advantages that the process is simple, the cost is low, the method is green and environment-friendly, the comprehensive recovery of valuable metals can be realized, and the total recycling rate of the nickel-cobalt-manganese is up to 97%.

Description

technical field [0001] The invention belongs to the technical field of nickel-cobalt hydrometallurgy, and in particular relates to a method for preparing a ternary precursor by recycling copper sulfide slag. Background technique [0002] Copper is a common impurity in cobalt-nickel hydrometallurgy. At present, copper is generally removed by sulfide precipitation. The copper slag produced in the process of copper removal by sulfidation precipitation method contains not only copper, but also high value metals such as cobalt, nickel, manganese, etc. These metals are all present in the copper removal slag in the form of metal sulfides. For this kind of copper sulfide slag, the traditional treatment process is mainly sulfuric acid acidification roasting-wet recovery. Its purpose is to convert non-ferrous metals in metal sulfides into soluble sulfates under the conditions of high oxygen content and low temperature, and then separate the valuable metals one by one in the solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B15/00C22B23/00C22B47/00
CPCC22B7/007C22B7/04C22B15/0067C22B15/0091C22B23/0415C22B23/0453C22B47/00Y02P10/20
Inventor 李良彬刘超彭伟文章小明马木林熊训满江文波李玲玲白有仙王超强谢绍忠
Owner 江西赣锋循环科技有限公司
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