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Rebirth method of complexation precipitant for purifying copper electrolyte

A technology of complex precipitation and copper electrolyte, applied in the field of hydrometallurgy, can solve the problems of loss of activity of complex precipitation agent, large loss of enterprises, and not 100%

Active Publication Date: 2018-12-21
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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  • Rebirth method of complexation precipitant for purifying copper electrolyte
  • Rebirth method of complexation precipitant for purifying copper electrolyte
  • Rebirth method of complexation precipitant for purifying copper electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Dissolve 150g of deactivated complex precipitation agent in 100mL concentration of 38% concentrated hydrochloric acid, heat to 60°C under stirring, and stir at a rate of 300r / min, fully react for 90 minutes under this constant temperature condition, and completely react The mixture was filtered, and then 3 times the volume of water was added to the obtained filtrate, heated to 60° C. with stirring at a stirring rate of 100 r / min, and the hydrolysis reaction was carried out at a constant temperature of 60° C.

[0044] After 60 minutes, filter the completely reacted mixture, dissolve the obtained filter residue with water at a liquid-solid ratio of 2:1, and add caustic soda to adjust the pH value to 13, and then heat it to 65°C while stirring. 200r / min, at a constant temperature of 65°C for analytical reaction, after 40 minutes, filter the completely reacted mixture, add 5% sulfuric acid to the obtained filter residue according to the liquid-solid ratio of 3:1, adjust the ...

Embodiment 2

[0050] Dissolve 150g of deactivated complex precipitation agent in 120mL concentration of 35% concentrated hydrochloric acid, heat to 65°C under stirring, and stir at a rate of 200r / min, fully react for 60 minutes under this constant temperature condition, and completely react The mixture was filtered, and then 2 times the volume of water was added to the obtained filtrate, heated to 55° C. with stirring at a stirring rate of 300 r / min, and the hydrolysis reaction was carried out at a constant temperature of 55° C.

[0051] After 70 minutes, filter the fully reacted mixture, dissolve the obtained filter residue with water at a liquid-solid ratio of 2:2, and add caustic soda to adjust the pH value to 13, and then heat it to 60°C under stirring. 400r / min, at a constant temperature of 60°C for analytical reaction, after 60 minutes, filter the completely reacted mixture, add 5% sulfuric acid to the obtained filter residue according to the liquid-solid ratio of 4:1, adjust the pH va...

Embodiment 3

[0057] Dissolve 150g of deactivated complex precipitation agent in 150mL concentration of 31% concentrated hydrochloric acid, heat to 70°C under stirring condition, stirring rate 100r / min, fully react under this constant temperature condition for 80 minutes, and completely react The mixture was filtered, and then 4 times the volume of water was added to the obtained filtrate, heated to 65° C. with stirring at a stirring rate of 200 r / min, and the hydrolysis reaction was carried out at a constant temperature of 65° C.

[0058] After 90 minutes, filter the fully reacted mixture, dissolve the obtained filter residue with water at a liquid-solid ratio of 3:1, and add caustic soda to adjust the pH value to 14, and then heat it to 60°C under stirring. 300r / min, under constant temperature conditions of 70°C, carry out analysis reaction, after 30 minutes, filter the completely reacted mixture, add 5% sulfuric acid to the obtained filter residue according to the liquid-solid ratio of 2:...

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Abstract

The invention provides a rebirth method of complexation precipitant for purifying copper electrolyte. The rebirth method of the complexation precipitant for purifying the copper electrolyte comprisesthe following steps that S1, deactivated complexation precipitant is mixed with hydrochloric acid to be subjected to heating reaction, and a first liquid phase and a first solid phase are obtained through solid-liquid separation; S2, the first liquid phase is mixed with water to be subjected to hydrolysis reaction, a second liquid phase and a second solid phase are obtained through the solid-liquid separation, wherein the dosage of water is 2-4 times of the volume of the first liquid phase, and temperature of the hydrolysis reaction is 55-65 DCG C; S3, the second solid phase is parsed under analkaline condition, and a third solid phase is obtained after separation; and S4, the third solid phase is sequentially subjected to pickling and separation to obtain the rebirth complexation precipitant. The rebirth method of the complexation precipitant for purifying the copper electrolyte is simple in rebirth process, low in cost, high in stability and easy for industrial application. The experiment shows that the complexation precipitant obtained by adopting the rebirth method can continue to carry out complexation precipitation on arsenic, antimony and bismuth of the electrolyte to achieve the effect of purifying the electrolyte.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy, in particular to a method for regenerating a complex precipitant used for purifying copper electrolyte. Background technique [0002] During the copper electrolytic refining process, harmful impurities such as arsenic (As), antimony (Sb), bismuth (Bi) etc. gradually accumulate in the electrolyte, and when accumulated to a certain concentration, it is possible to form floating anode slime and mechanically adhere to the cathode Surface, what's more, it is discharged and precipitated on the cathode, which seriously affects the quality of cathode copper. Therefore, in order to maintain the stability of the electrolyte composition and ensure the quality of cathode copper, it is necessary to regularly purify the copper electrolyte. At present, the copper electrolyte purification technology that has been studied more is self-purification technology, which mainly includes three types: one is the...

Claims

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Application Information

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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