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Method of eliminating lead from nickel chloride solution

A technology of nickel chloride and solution, applied in the direction of nickel halide, etc., can solve the problems of small capacity, affect product quality, fail to meet production needs, etc., achieve low cost, no environmental pollution, and easy regeneration

Inactive Publication Date: 2007-03-07
JINCHUAN GROUP LIMITED
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the traditional process, chemical precipitation is usually used to remove lead, but this method is only suitable for solutions with high lead content, and there is still a small amount of lead (about 0.2g / l) in the solution after precipitation, which affects the quality of the final product
The existing deep lead removal methods usually use ion exchange resins. The lead removal effect of FPA90 and FPA98 resins in nickel chloride solution is not good, which cannot meet the production needs; the lead removal of D363 and D296 resins can achieve the expected effect, but the capacity Small, the qualified liquid is only twice the volume of the resin; D318 and D331 resins have large capacity and good effect, but when D331 resin is regenerated, the effect is not ideal when it is washed with water or treated with acid after washing, and the regeneration is difficult, so D331 not suitable for operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The pretreated D318 resin is ion-exchanged with the nickel chloride solution, and the nickel chloride solution passes through the resin exchange column at a flow rate of 1 times the volume of the resin, and the adsorption period is 8 hours. Then carry out the nickel washing operation, the hydrochloric acid solution of 0.1mol / L passes through the resin exchange column at a flow rate of 3 times the resin volume, and after about two hours, the nickel washing process ends. Finally, the resin is regenerated. Pure water is used for resin regeneration, and the resin exchange column is passed through the resin exchange column at a flow rate of 4 times the volume of the resin. The resin regeneration is completed in about 2 hours.

[0012] Pre-lead solution

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PUM

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Abstract

The invention discloses a lead removing method in the nickel chloride solution through resin, which makes nickel chloride solution and D318 resin exchange ion to remove lead.

Description

technical field [0001] A method for removing lead in a nickel chloride solution relates to a method for removing impurities in a chlorination medium, in particular to a method for removing lead in a nickel chloride solution by using a resin. Background technique [0002] In the traditional process, chemical precipitation is usually used to remove lead, but this method is only suitable for solutions with high lead content, and there is still a small amount of lead (about 0.2g / l) in the solution after precipitation, which affects the quality of the final product . The existing deep lead removal methods usually use ion exchange resins. The lead removal effect of FPA90 and FPA98 resins in nickel chloride solution is not good, which cannot meet the production needs; the lead removal of D363 and D296 resins can achieve the expected effect, but the capacity Small, the qualified liquid is only twice the volume of the resin; D318 and D331 resins have large capacity and good effect, ...

Claims

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Application Information

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IPC IPC(8): C01G53/09
Inventor 范春龙崔芸梁承宇李书山田洪梅
Owner JINCHUAN GROUP LIMITED
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