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Method for separating nickel and cobalt from manganese in high manganese-cobalt ratio nickel-cobalt-manganese raw material

A technology of nickel-cobalt-manganese and high-manganese, applied in the direction of improving process efficiency, etc., can solve the problems of unqualified battery materials of nickel-cobalt sulfate solution, difficulty in separating nickel-cobalt and manganese, and achieve low production costs, fewer types of impurities, The effect of reducing production costs

Active Publication Date: 2015-08-12
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of traditional direct acid leaching and reducing acid leaching, manganese is transferred into the solution together with nickel and cobalt. Due to the difficulty in the separation of nickel, cobalt and manganese in the acid leaching solution, the quality of the obtained nickel and cobalt sulfate solution is unqualified and cannot be directly used. Production of battery materials

Method used

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  • Method for separating nickel and cobalt from manganese in high manganese-cobalt ratio nickel-cobalt-manganese raw material
  • Method for separating nickel and cobalt from manganese in high manganese-cobalt ratio nickel-cobalt-manganese raw material
  • Method for separating nickel and cobalt from manganese in high manganese-cobalt ratio nickel-cobalt-manganese raw material

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Embodiment 1

[0034] a kind of like figure 1 The method for separating nickel-cobalt and manganese in the high-manganese-cobalt ratio nickel-cobalt-manganese raw material of the present invention comprises the following steps:

[0035] (1) The primary product of nickel extraction produced by a nickel smelter in Africa is a high-manganese-cobalt-ratio nickel-cobalt-manganese raw material. The primary product of nickel extraction is obtained from laterite nickel ore after pressure acid leaching and alkaline precipitation. The composition includes nickel hydroxide and cobalt precipitation slag, and the determination of the main element content is shown in Table 1 below. The moisture content in the raw material is 62.41%, and the mass ratio of manganese and cobalt elements is 1.87.

[0036] Table 1: Analysis of the main chemical elements of the nickel primary product in Example 1

[0037]

[0038] (2) The high manganese-cobalt ratio nickel-cobalt-manganese raw material of the above-mentione...

Embodiment 2

[0041] a kind of like figure 1 The method for separating nickel-cobalt and manganese in the high-manganese-cobalt ratio nickel-cobalt-manganese raw material of the present invention comprises the following steps:

[0042] (1) the high manganese cobalt ratio nickel cobalt manganese raw material that present embodiment selects is identical with embodiment 1;

[0043] (2) The high manganese-cobalt ratio nickel-cobalt-manganese raw material of the present embodiment is mixed with the ammonia leaching agent, and the ammonia leaching agent adopted in the present embodiment is NH 3 ·H 2 O-(NH 4 ) 2 SO 4 Mixed leaching system, initial ammonia concentration [NH 3 ] T Controlled to 140g·L -1 , the liquid-solid ratio during leaching is (ml·g -1 ) 12:1, stirring and leaching at room temperature for 2 hours and then slowly adding hydroxylamine sulfate as a reducing agent, the addition of hydroxylamine sulfate is 2 times the content of cobalt in the high manganese-cobalt ratio nicke...

Embodiment 3

[0046] a kind of like figure 1 The method for separating nickel-cobalt and manganese in the high-manganese-cobalt ratio nickel-cobalt-manganese raw material of the present invention comprises the following steps:

[0047] (1) The primary product of nickel extraction produced by a battery material factory in Hunan is a high-manganese-cobalt ratio nickel-cobalt-manganese raw material. The primary product of nickel extraction is obtained from laterite nickel ore after pressurized acid leaching and alkaline precipitation. The composition includes nickel hydroxide cobalt precipitated slag, the determination of the main element content is shown in Table 2 below, wherein the moisture content in the raw material is 48.29%, and the mass ratio of manganese and cobalt elements is 2.94;

[0048] Table 2: Analysis of the main chemical elements of the nickel primary product in Example 3

[0049]

[0050] (2) The high manganese-cobalt ratio nickel-cobalt-manganese raw material of the pre...

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Abstract

The invention discloses a method for separating nickel and cobalt from manganese in a high manganese-cobalt ratio nickel-cobalt-manganese raw material. The method comprises the following steps of mixing a high manganese-cobalt ratio nickel-cobalt-manganese raw material and an ammoniacal leaching agent under control of an ammoniacal leaching agent initial concentration, leaching time and a leaching temperature, adding a reducer into the high manganese-cobalt ratio nickel-cobalt-manganese raw material-ammoniacal leaching agent mixed leaching system, after full reaction, and carrying out thermal insulation aging and solid-liquid separation to obtain nickel-cobalt ammoniacal leachate and high-manganese leaching residue. The method realizes separation of nickel and cobalt from manganese in the high manganese-cobalt ratio nickel-cobalt-manganese raw material. The method has simple processes, realizes thorough separation of nickel and cobalt from manganese and high nickel and cobalt content and low impurity content of the leachate, has a high valuable metal comprehensive recovery rate, and has less equipment investment and a low production cost.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy and chemical production, in particular to a method for selectively leaching and separating nickel, cobalt and manganese from nickel, cobalt and manganese raw materials. Background technique [0002] With the rapid development of battery materials, the demand for nickel-cobalt in batteries is also increasing. Laterite nickel ore contains a large amount of nickel and cobalt elements. At present, the mainstream treatment process of laterite nickel ore is still pressurized acid leaching, and the resulting leachate can produce a large amount of nickel and cobalt hydroxide after being treated by "preliminary iron and aluminum removal-alkaline precipitation" Precipitate the intermediate product, the content of nickel in the precipitate reaches about 40%, and after the subsequent impurity removal and purification treatment to obtain a qualified nickel-cobalt sulfate solution, it can be directly us...

Claims

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Application Information

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IPC IPC(8): C22B3/14C22B23/00C22B47/00
CPCY02P10/20
Inventor 吴江华宁顺明佘宗华封志敏邢学永万洪强黄臻高王文娟
Owner CHANGSHA RES INST OF MINING & METALLURGY
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