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A method for separating nitrate radicals in a high-concentration nickel sulfate solution

A sulfuric acid solution, nitrate technology, applied in nickel sulfate, nitric acid, chemical instruments and methods, etc., can solve problems such as nitrate separation, and achieve the effect of increasing content, high removal depth, and ensuring purity and high concentration

Active Publication Date: 2021-06-08
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the invention is to provide a kind of method for separating nitrate in high concentration nickel sulfate solution, to solve the separation problem of nitrate in high concentration nickel nitrate

Method used

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  • A method for separating nitrate radicals in a high-concentration nickel sulfate solution
  • A method for separating nitrate radicals in a high-concentration nickel sulfate solution
  • A method for separating nitrate radicals in a high-concentration nickel sulfate solution

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The composition (g / l) of high-concentration nickel sulfate solution is shown in Table 1:

[0025]

[0026] The high-concentration nickel sulfate solution separation nitrate technological process comprises the following steps:

[0027] (a) Resin adsorbs nitrate in high-concentration nickel sulfate solution: the nickel sulfate solution is adsorbed through the resin column after the last analysis, with a flow rate of 1.5BV / h; after adsorption, Ni101.5g / l in high-concentration nickel sulfate solution is obtained , NO 3 - 0.0035g / l. When the nitrate content in the adsorbed liquid is 0.098g / l, the adsorption is stopped. Wash the ion column with 1.0 BV resin volume of pure water.

[0028] (b) Sulfuric acid solution analysis: first use 10BV of sulfuric acid solution after the nitrate content of the previous production output is less than 2g / l with a concentration of 15% (mass concentration) for analysis, and then use 15% new sulfuric acid 5BV for analysis to analyze the ...

Embodiment 2

[0031] The composition (g / l) of high-concentration nickel sulfate solution is shown in Table 2:

[0032]

[0033] The high-concentration nickel sulfate solution separation nitrate technological process comprises the following steps:

[0034] a) Resin adsorption of nitrate in the high-concentration nickel sulfate solution: the nickel sulfate solution is adsorbed by the resin column after the last analysis, and the flow rate is 2.0BV / h; Ni99.35g / l, Ni99.35g / l, NO 3 - 0.004g / l. When the nitrate content in the adsorbed liquid is 0.10g / l, the adsorption is stopped. Wash the ion column with 1.0 BV resin volume of pure water.

[0035] b) Sulfuric acid solution analysis: first use 7BV of the sulfuric acid solution with a nitrate content of less than 2g / l and a concentration of 20% from the previous production for analysis, and then use 5BV of 20% new sulfuric acid for analysis, and the total acid content of the analysis is 12BV; The nitrate content in the after liquor was redu...

Embodiment 3

[0038] The composition (g / l) of the high-concentration nickel sulfate solution is shown in Table 3.

[0039]

[0040] The high-concentration nickel sulfate solution separation nitrate technological process comprises the following steps:

[0041]a) Resin adsorption of nitrate in the high-concentration nickel sulfate solution: the nickel sulfate solution is adsorbed by the resin column after the last analysis, and the flow rate is 2.2BV / h; Ni90.43g / l, Ni90.43g / l, NO 3 - 0.0022g / l. When the nitrate content in the adsorbed liquid is 0.089g / l, the adsorption is stopped. Wash the ion column with 1.0 BV resin volume of pure water.

[0042] b) Sulfuric acid solution analysis: first use 5BV of sulfuric acid solution with nitrate content less than 2g / l and concentration of 20% from the previous production for analysis, and then analyze with 6BV of 20% new sulfuric acid, and analyze the total acid content of 11BV; The nitrate content in the after liquor was reduced from 14.63g / l ...

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Abstract

The invention discloses a method for separating nitrate in high-concentration nickel sulfate solution, which belongs to the field of nonferrous metal hydrometallurgy and aims to solve the problem of separating nitrate in high-concentration nickel nitrate. The method applies the resin to the adsorption of nitrate in high-concentration nickel sulfate solution, washes and pretreats the new resin with sulfuric acid solution, and then uses the treated resin to absorb the nitrate in nickel sulfate; uses sulfuric acid solution to analyze the nitrate on the resin , the solution with a nitrate content higher than 2g / l in the analyzed solution is discharged, and sulfuric acid and nitric acid are reused; the analyzed solution with a nitrate content lower than 2g / l enters the next saturated resin analysis. The method of the invention is simple and easy to operate, has high nitrate removal depth, does not introduce any impurities, ensures the purity and high concentration of the nickel sulfate solution in the whole process, does not produce waste water and waste residue, and belongs to green metallurgy.

Description

technical field [0001] The invention belongs to the field of nonferrous metal hydrometallurgy, and in particular relates to a method for separating nitrate in a high-concentration nickel sulfate solution. Background technique [0002] In the nitric acid leaching process of nickel matte, the valuable metals of nickel, copper and cobalt are finally transformed into the sulfuric acid system to obtain a nickel sulfate solution. During the transformation process, the nitrate is entrained into the nickel sulfate solution. The main components of the solution are Ni60g / l-120g / l, Co0. 1-10g / l, Cu0.1g / l-20g / l, NO 3 - 0.3g / l-10g / l, SO 4 2- 100g / l-200g / l, the pH of the solution is 2-6. This nickel sulfate solution is mainly used to produce electroplating-grade or battery-grade nickel sulfate products, and the nitrate radicals in it must be separated, and the final nitrate radical content is required to be less than 0.2g / l. Also do not see the separation process of nitrate in this k...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/10C01B17/74C01B21/42
Inventor 刘玉强张晗李娟李维舟陈彩霞王书友郭金权高晓婷郁洪波席海龙李全王钦马天飞路思阳张建玲
Owner JINCHUAN GROUP LIMITED
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