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Extraction purification method of cobalt nickel hydroxide hydrochloric acid leaching solution

A technology of nickel-cobalt hydroxide hydrochloric acid and nickel-cobalt hydroxide is applied in the field of impurity removal of nickel-cobalt hydroxide hydrochloric acid leaching solution by extraction method, which can solve the problems of poor removal effect of metal ions and inability to meet electroplating-grade nickel chloride, etc. The effect of high impurity removal efficiency and simple process flow

Active Publication Date: 2015-01-28
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following defects: the removal effect of Ca, Mn, Mg and other metal ions in the solution is not good, and it cannot meet the requirements of the electroplating grade nickel chloride standard

Method used

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  • Extraction purification method of cobalt nickel hydroxide hydrochloric acid leaching solution
  • Extraction purification method of cobalt nickel hydroxide hydrochloric acid leaching solution
  • Extraction purification method of cobalt nickel hydroxide hydrochloric acid leaching solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for extracting and removing impurities of nickel hydroxide cobalt hydrochloric acid leachate, it comprises the following steps:

[0028] Step 1: Pre-extract preparation. [H of industrial hydrochloric acid used + ] Concentration is 7.8mol / L, the pH value of hydrochloric acid leaching solution is 3.5, and the composition of used nickel hydroxide cobalt hydrochloric acid leaching solution is as shown in Table 3.

[0029] Table 3 Unit: g / L

[0030]

[0031] Step Two: Sodium Soap. Use P 507 As the extractant, the preparation ratio of the extracted organic phase is: 25%P 507 +75% solvent oil (volume ratio), prepared organic phase [H + ] Concentration is 0.68mol / L, adopts 30% liquid caustic soda to carry out saponification to organic, organic [H + ] The concentration is 0.15mol / L, and the organic phase formed is a sodium soap organic phase.

[0032] Step Three: Nickel Soap. The concentration of qualified nickel chloride solution used for nickel soap is cont...

Embodiment 2

[0039] A method for extracting and removing impurities of nickel hydroxide cobalt hydrochloric acid leachate, it comprises the following steps:

[0040] The first step: the [H of industrial hydrochloric acid used + ] Concentration is 8.1mol / L, the pH value of hydrochloric acid leaching solution is 4.0, and the composition of used nickel hydroxide cobalt hydrochloric acid leaching solution is as shown in table 5.

[0041] Table 5 Unit: g / L

[0042]

[0043] Step Two: Sodium Soap. Use P 507 As the extractant, the preparation ratio of the extracted organic phase is: 25%P 507 +75% solvent oil (volume ratio), prepared organic phase [H + ] Concentration is 0.70mol / L, adopts 30% liquid caustic soda to carry out saponification to organic, organic [H +] The concentration is 0.2mol / L, and the organic phase formed is a sodium soap organic phase.

[0044] Step Three: Nickel Soap. The concentration of qualified nickel chloride solution used for nickel soap is controlled at 88g / L,...

Embodiment 3

[0051] A method for extracting and removing impurities of nickel hydroxide cobalt hydrochloric acid leachate, it comprises the following steps:

[0052] Step 1: Pre-extract preparation. [H of industrial hydrochloric acid used + ] The concentration is 8.5mol / L, the pH value of the hydrochloric acid leaching solution is 3.5, and the components of the nickel hydroxide cobalt hydrochloric acid leaching solution used are as shown in Table 7.

[0053] Table 7 Unit: g / L

[0054]

[0055] Step Two: Sodium Soap. Use P 507 As the extractant, the preparation ratio of the extracted organic phase is: 30%P 507 +70% solvent oil (volume ratio), prepared organic phase [H + ] Concentration is 0.75mol / L, adopts 30% liquid caustic soda to carry out saponification to organic, organic [H + ] The concentration is 0.22mol / L, and the organic phase formed is a sodium soap organic phase.

[0056] Step Three: Nickel Soap. The concentration of qualified nickel chloride solution used for nickel ...

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Abstract

The invention relates to the technical field of non-ferrous metal smelting hydrometallurgy and discloses an extraction purification method of cobalt nickel hydroxide hydrochloric acid leaching solution. The extraction purification process of the cobalt nickel hydroxide hydrochloric acid leaching solution comprises five links of soda saponifying, nickel saponifying, extraction purifying, organic load nickel washing and reverse extracting. P507 is selected from chloride media to be used as an extraction agent, a megilp (or sulfonated kerosene) is used as a diluting agent, the extraction agent and the diluting agent are used as organic phase, and the flow ratio of the organic phase to water phase is controlled according to different combining capacities of various metal ion extraction agents so that impurity metal ions in the solution are combined with the organic phase to be separated from garget metal Ni ions, and metal ions of Co, Cu, Ca, Mg, Mn, Zn and Fe in the cobalt nickel hydroxide hydrochloric acid leaching solution are further removed so that the cobalt nickel hydroxide hydrochloric acid leaching solution is deeply purified. The extraction purification method provided by the invention is simple in process flow and high in impurity removal efficiency, and the quality of prepared nickel chloride solution meets production requirements of an electroplating grade nickel chloride product.

Description

technical field [0001] The invention relates to a method for removing impurities from a nickel hydroxide cobalt hydrochloride leach solution by using an extraction method in the technical field of nonferrous metal smelting hydrometallurgy. Background technique [0002] When using hydrochloric acid to leaching nickel cobalt hydroxide to produce nickel chloride solution, metal impurities such as Co, Ca, Mg, Mn, Zn, Fe, Cu contained in nickel cobalt hydroxide will enter the solution in the form of ions, and nickel cobalt hydroxide The composition of the hydrochloric acid leaching solution is shown in Table 1. In order to meet the production demand of electroplating grade nickel chloride products, Co, Mn, Zn, Fe, Cu≤0.006g / L, Ca≤0.05g / L, Mg≤1g / L in the nickel chloride solution are required, so it is necessary to The nickel chloride leaching solution is purified. [0003] Table 1 Unit: g / L [0004] [0005] For the removal of Co, Ca, Mg, Mn, Zn, Fe, Cu and other metal impur...

Claims

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Application Information

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IPC IPC(8): C22B3/26
CPCY02P10/20
Inventor 任伟李宝平邢晓钟陈胜维于红王永铸张国勇曹增成时金秋
Owner JINCHUAN GROUP LIMITED
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