A method for continuously preparing copper hydroxide by electrolysis

A technology of copper hydroxide and electrolysis, which is applied in the direction of electrolysis components, electrolysis process, solid separation, etc., can solve the problem that there is no way to realize continuous production

Active Publication Date: 2019-12-03
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the recovery of copper hydroxide reagent is collected by filtration, that is, the copper hydroxide reagent is collected after the preparation is completed, and there is no way to achieve continuous production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: a kind of method utilizing electrolytic method to continuously prepare copper hydroxide, concrete steps are as follows:

[0024] (1) Use sodium hydroxide to adjust the pH value of the sodium sulfate aqueous solution to 9, add a copper hydroxide collector (the copper hydroxide collector is sodium dodecyl sulfate) and mix evenly to obtain an electrolyte; the sodium sulfate aqueous solution The concentration of the mass percentage is 5%, and the amount of copper hydroxide collector (sodium lauryl sulfate) in the electrolyte is 30mg / L;

[0025] (2) Use the copper electrode as the anode and cathode of the electrolytic cell, add the electrolyte solution in step (1) into the electrolytic cell, and at a temperature of 20°C, apply a DC voltage of 2.0V for electrolysis to obtain hydrogen and hydrogen Copper oxide / copper hydroxide collector foam, use the scraper of the electrolytic cell to scrape and collect the copper hydroxide / copper hydroxide collector foam;

[0...

Embodiment 2

[0028] Embodiment 2: a kind of method utilizing electrolytic method to continuously prepare copper hydroxide, concrete steps are as follows:

[0029] (1) Use sodium hydroxide to adjust the pH value of the sodium sulfate aqueous solution to 9.5, add a copper hydroxide collector (the copper hydroxide collector is sodium dodecylsulfonate) and mix well to obtain an electrolyte; the sodium sulfate The mass percent concentration of the aqueous solution is 6%, and the amount of copper hydroxide collector (sodium dodecylsulfonate) in the electrolyte is 45mg / L;

[0030] (2) Use the copper electrode as the anode and cathode of the electrolytic cell, add the electrolyte solution in step (1) into the electrolytic cell, and at a temperature of 25°C, apply a DC voltage of 1.5V for electrolysis to obtain hydrogen and hydrogen Copper oxide / copper hydroxide collector foam, use the scraper of the electrolytic cell to scrape and collect the copper hydroxide / copper hydroxide collector foam;

[0...

Embodiment 3

[0033] Embodiment 3: a kind of method utilizing electrolytic method to continuously prepare copper hydroxide, concrete steps are as follows:

[0034] (1) Use sodium carbonate to adjust the pH value of potassium sulfate aqueous solution to 10, add copper hydroxide collector (copper hydroxide collector is KS-III) and mix evenly to obtain electrolyte; the mass percentage concentration of potassium sulfate aqueous solution is 10%, the amount of copper hydroxide collector (KS-III) in the electrolyte is 50mg / L;

[0035] (2) Use the copper electrode as the anode and cathode of the electrolytic cell, add the electrolyte solution in step (1) into the electrolytic cell, and at a temperature of 28°C, apply a DC voltage of 1.6V for electrolysis to obtain hydrogen and hydrogen Copper oxide / copper hydroxide collector foam, use the scraper of the electrolytic cell to scrape and collect the copper hydroxide / copper hydroxide collector foam;

[0036] (3) Under stirring conditions, add water at...

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PUM

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Abstract

The invention relates to a method for continuously preparing copper hydroxide through an electrolysis method, and belongs to the technical field of copper hydroxide preparation. The method comprises the steps that sodium hydroxide or sodium carbonate is adopted to adjust the pH value of a sodium sulfate aqueous solution or a potassium sulfate aqueous solution to be 9-10, and a copper hydroxide collector is added and mixed evenly to obtain an electrolyte; copper electrodes serve as an anode and an cathode of an electrolytic pool, the electrolyte is added into the electrolytic pool, under the condition of the temperature of 20-30 DEG C, a direct current with the voltage being 1.5-2.0 V is lead to conduct electrolysis to obtain hydrogen and copper hydroxide / copper hydroxide collector foam, and the copper hydroxide / copper hydroxide collector foam is scraped and collected through a scraping plate of the electrolytic pool; and under the stirring condition, water with the temperature being 60-100 DEG C is added into the copper hydroxide / copper hydroxide collector foam for washing, repeated washing is conducted through water with the temperature being 60-100 DEG C for 2-3 times, filtrationand vacuum drying are conducted, and the copper hydroxide is obtained.

Description

technical field [0001] The invention relates to a method for continuously preparing copper hydroxide by electrolysis, belonging to the technical field of chemical reagent preparation. Background technique [0002] At present, the commonly used methods for the preparation of copper hydroxide reagents commonly used in laboratories are chemical precipitation and electrolysis. The chemical precipitation method mixes soluble copper salts (such as copper sulfate solution) and strong alkali solutions (such as sodium hydroxide) in a certain proportion. The reaction produces copper hydroxide precipitate. The reaction formula is as follows: [0003] CuSO 4 +NaOH═Cu(OH) 2 ↓+Na 2 SO 4 [0004] At present, the recovery of copper hydroxide reagent is collected by filtration, that is, the copper hydroxide reagent is collected after the preparation of the copper hydroxide reagent is completed, and there is no way to realize continuous production. Contents of the invention [0005] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/00B03D1/02B03D1/012B03D101/02
CPCB03D1/012B03D1/02B03D2201/02C25B1/00
Inventor 李浩东罗溪梅
Owner KUNMING UNIV OF SCI & TECH
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