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A kind of regeneration method of the complex precipitation agent used for purifying copper electrolyte

A technology of complex precipitation and copper electrolyte, which is applied in the field of hydrometallurgy, can solve the problems of large losses of enterprises, not 100%, loss of activity of complex precipitation agents, etc.

Active Publication Date: 2021-05-04
YANGGU XIANGGUANG COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resolution rate of arsenic and bismuth in each analysis reaction is generally not 100%. After a period of enrichment, elements such as arsenic, bismuth, and copper in the complexation precipitation agent are complexed to form agglomerated macromolecules, which cannot continue to be complexed and precipitated. reaction, resulting in the loss of activity of the complex precipitant
If the inactive complex precipitant is discarded, the loss to the enterprise will be greater

Method used

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  • A kind of regeneration method of the complex precipitation agent used for purifying copper electrolyte
  • A kind of regeneration method of the complex precipitation agent used for purifying copper electrolyte
  • A kind of regeneration method of the complex precipitation agent used for purifying copper electrolyte

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Effect test

Embodiment 1

[0043]The 150 g of the lost activity was dissolved in a concentration of 38% concentrated hydrochloric acid, which was heated to 60 ° C under stirring, and the stirring rate was 300r / min, which was fully reacted under this constant temperature for 90 minutes, and the reaction was completely The mixture was filtered, and then a 3x volume of water was added to the obtained filtrate, heated to 60 ° C under stirring, and the stirring rate of 100 r / min was hydrolyzed at 60 ° C constant temperature conditions.

[0044]After 60 minutes, the mixture of the reaction was filtered, and the resulting filter residue was dissolved from 2: 1 to the liquid, and the pH is added to 13, and then heated to 65 ° C under stirring. 200R / min, analyzed at 65 ° C constant temperature conditions, after 40 minutes, filtrate completely mixture was filtered, and the resulting filter residue was 3: 1 to add 5% sulfuric acid, and adjusted the pH of 2. The stirring was heated to 60 ° C, stirring the heating time...

Embodiment 2

[0050]The 150 g of the lost activity was dissolved in a 120 ml concentration of 35% concentrated hydrochloric acid, which was heated to 65 ° C under stirring, and the stirring rate was 200R / min, which was fully reacted under this constant temperature for 60 minutes, and the reaction was completely The mixture was filtered, and then 2x volumes of water were added to the obtained filtrate, heated to 55 ° C under stirring, stirring rate of 300 r / min, hydrolyzed under temperature temperature conditions at 55 ° C.

[0051]After 70 minutes, the mixture of the reaction was filtered, and the resulting filter residue was dissolved from 2: 2 to the liquid, and the pH is added to 13, and then heated under stirring to 60 ° C, stirring rate 400r / min, analyzed at 60 ° C constant temperature conditions, after 60 minutes, filtrate the reaction complete mixture was filtered, and the obtained filter residue was added to 4: 1 to add 5% sulfuric acid, and adjusted the pH of 1. The stirring was heate...

Embodiment 3

[0057]The 150 g of lost active complex precipitating agent was dissolved in a 150 ml concentration of 31% concentrated hydrochloric acid, and heated to 70 ° C under stirring, the stirring rate of 100R / min, which was fully reacted under this constant temperature for 80 minutes, and the reaction was completely The mixture was filtered, and then 4x volumes of water were added to the resulting filtrate, heated to 65 ° C under stirring, and the stirring rate of 200R / min was hydrolyzed under a constant temperature of 65 ° C.

[0058]After 90 minutes, the reaction was completely filtered, and the resulting filter residue was dissolved from 3: 1, and the pH is added to 14, and then heated to 60 ° C under stirring, stirring rate 300r / min, analyzed at 70 ° C constant temperature conditions, after 30 minutes, filtrate the reaction complete mixture was filtered, and the resulting filter residue was added to 2: 1 to add 5% sulfuric acid, and adjusted the pH of 2, The stirring was heated to 70...

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Abstract

The invention provides a method for regenerating a complexing precipitating agent used for copper electrolyte purification, comprising the following steps: S1, mixing the deactivated complexing precipitating agent with hydrochloric acid, heating and reacting, and separating the solid and liquid to obtain the first Liquid phase and first solid phase; S2, carry out hydrolysis reaction after described first liquid phase and water are mixed, through solid-liquid separation, obtain second liquid phase and second solid phase; The consumption of described water is the first liquid phase 2 to 4 times the volume of the phase, and the temperature of the hydrolysis reaction is 55 to 65° C.; S3, analyze the second solid phase under alkaline conditions, and obtain the third solid phase after separation; S4. The third solid phase is pickled and separated in sequence to obtain a regenerated complex precipitant. The invention has the advantages of simple regeneration process, low cost, high stability and easy industrial application. Experiments show that the complex precipitation agent is regenerated by the method of the present invention, which can continue to carry out complex precipitation on the arsenic, antimony and bismuth in the electrolyte to achieve the effect of purifying the electrolyte.

Description

Technical field[0001]The present invention relates to the field of wet metallurgy, and more particularly to the rehabilitation method for purifying the copper electrolyte.Background technique[0002]During the copper electrolysis refining process, harmful impurities (AS), antimony (Sb), ruthenium (BI), etc., in the electrolyte, when accumulating to a certain concentration, it is possible to form a floating sun mud and mechanically adhered to the cathode. The surface, and even more placed on the cathode, which seriously affects the quality of cathode copper. Therefore, in order to maintain the stability of the electrolyte ingredient, the mass of catholytic solution is required to perform periodic purification treatment. At present, more copper electrolyte purification technology is self-purification technology, mainly including three types: one is arsenic self-purification technology; the second is to add antimony self purification technology; third is to bismuth self purification tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B15/00C25C1/12C25C7/06
CPCC22B15/0089C25C1/12C25C7/06Y02P10/20
Inventor 宁万涛谢祥添冯芝勇余华清韩义忠左东平王虎
Owner YANGGU XIANGGUANG COPPER