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Method for preparing nickel-cobalt solution for synthesizing ternary precursor by using nickel-cobalt sulphide ore

A nickel-cobalt sulfide and precursor technology, applied in the field of metallurgy, can solve the problems of complex steps in synthesizing ternary precursors, high cost, and difficult utilization of nickel-cobalt sulfide ore, and achieve high leaching efficiency, short process and simple equipment.

Inactive Publication Date: 2018-12-07
LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of method that utilizes nickel-cobalt sulfide ore to prepare the nickel-cobalt solution that is used for synthesizing ternary precursor, to solve the difficult utilization of nickel-cobalt sulfide ore, and the method step of existing synthetic ternary precursor is complicated, high cost problem

Method used

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  • Method for preparing nickel-cobalt solution for synthesizing ternary precursor by using nickel-cobalt sulphide ore
  • Method for preparing nickel-cobalt solution for synthesizing ternary precursor by using nickel-cobalt sulphide ore
  • Method for preparing nickel-cobalt solution for synthesizing ternary precursor by using nickel-cobalt sulphide ore

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Embodiment 1

[0030] Step 1, ore grinding: the nickel-cobalt sulfide ore is ground to a particle size of 40 mesh;

[0031] Step 2, leaching: the nickel-cobalt sulfide ore after grinding is slurried with water, the volume-to-mass ratio of liquid to solid is 4:1, transferred to an autoclave, and preheated at normal pressure, the preheating temperature is 70°C, and an appropriate amount of Sodium lignosulfonate and sulfuric acid are fed with oxygen and leached under the condition of oxygen pressure of 0.6MP. The leaching temperature is 140°C and the leaching time is 6h. After the leaching is completed, solid-liquid separation is carried out to obtain the leaching solution, and the iron forms hematite. slag removal;

[0032] Step 3, extraction and removal of impurities from the leachate: take the leachate, extract and remove copper, zinc, manganese, iron, calcium, magnesium and lead with P204, and obtain a solution after removal of impurities by P204;

[0033] Step 4. Calcium and magnesium rem...

Embodiment 2

[0039] Step 1, ore grinding: the nickel-cobalt sulfide ore is ground to a particle size of 80 mesh;

[0040] Step 2, leaching: the nickel-cobalt sulfide ore after grinding is slurried with water, the volume-to-mass ratio of liquid to solid is 8:1, transferred to an autoclave, and preheated at normal pressure, the preheating temperature is 90°C, and an appropriate amount of Sodium lignosulfonate and sulfuric acid are fed with oxygen and leached under the condition of oxygen pressure of 0.8MP. The leaching temperature is 160°C and the leaching time is 2 hours. slag removal;

[0041] Step 3, extraction and removal of impurities from the leachate: take the leachate, extract and remove copper, zinc, manganese, iron, calcium, magnesium and lead with P204, and obtain a solution after removal of impurities by P204;

[0042] Step 4. Calcium and magnesium removal: After P204 removes impurities, add ammonium fluoride 1.5 times the theoretical amount to further remove calcium and magnesi...

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Abstract

The invention discloses a method for preparing a nickel-cobalt solution for synthesizing a ternary precursor by using a nickel-cobalt sulphide ore, and belongs to the field of metallurgy. The method solves the problems that the nickel-cobalt sulphide ore is difficult to utilize, and a prior method for synthesizing the ternary precursor is complex and high in cost. According to the technical scheme, the method includes the following steps of ore grinding, leaching, leaching liquid extraction and impurity removal, calcium and magnesium removal, and extraction and impurity removal for the secondtime. The method has the beneficial effects that the pure nickel-cobalt solution finally obtained through the method can be used as a raw material for producing the ternary precursor of a lithium ionbattery, nickel and cobalt in the solution are not separated from each other, the process is simple, steps are simplified due to omitting of crystallization and re-dissolution, and the cost is reduced; sulfur or sulfate is formed from the sulfur element in the leaching process, no harmful substance is generated, and the environment is not harmed; the leaching efficiency is high, and iron is directly removed in the leaching process; the process of nickel-cobalt sulphide ore leaching is an exothermic process and can reduce energy cost; and the method is strong in operability, equipment is simple, and the process is short.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a method for preparing a nickel-cobalt solution for synthesizing a ternary precursor by utilizing nickel-cobalt sulfide ore. Background technique [0002] Nickel-cobalt sulfide ore is a kind of main nickel and cobalt metal ore. Its mineral phase is complex, its distribution is fine, and it is difficult to leach and utilize. [0003] Usually, the raw materials used in the synthesis of ternary precursors are sulfate, chloride or nitrate crystals of nickel, cobalt, manganese, etc. The source of these raw materials is that the solution containing nickel, cobalt, and manganese is prepared into crystals by crystallization. When used It also needs to be dissolved in water. Nickel and cobalt are generally associated. The preparation of the solution into crystals requires the removal of cobalt in the nickel solution and the removal of nickel in the cobalt solution. The steps are com...

Claims

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Application Information

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IPC IPC(8): C22B3/08C22B3/38C22B3/44C22B23/00
CPCC22B3/08C22B3/44C22B23/043C22B23/0461C22B3/3846
Inventor 柴艮风马骞王国超李伟常雪洁王悦吴芳王甲琴陈天翼冯燕马岩
Owner LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
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