Method for preparing copper-oxide powder

A technology of copper oxide powder and sodium hydroxide, applied in copper oxide/copper hydroxide, nanotechnology and other directions, can solve the problems of long process flow of copper oxide, poor production environment, high technical difficulty, etc., and achieve easy continuous production, spherical shape, etc. The effect of good degree and high product purity

Inactive Publication Date: 2012-01-18
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production method of copper oxide powder is mainly to spray molten copper at a high temperature of about 1300°C by spraying, and combine it with oxygen in the air to form copper oxide powder. The equipment and equipment required for the preparation of copper oxide by this method The technology is difficult and the particle size is large; some copper powder or electrolytic copper powder prepared by calcining chemical reduction method at a high temperature of 700-800 ℃ is used to prepare copper oxide. The copper oxide prepared by this method has a long process and high energy consumption. , Poor production environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Prepare copper oxide powder, its concrete steps are as follows:

[0019] (1) Raw material solution preparation: Prepare copper sulfate aqueous solution with a concentration of 1 mol / liter, sodium hydroxide aqueous solution with a concentration of 7 mol / liter and ammonia solution with a concentration of 18% for standby;

[0020] (2) Reaction: Add the solution prepared in step (1) to the reaction kettle at a volume ratio of: deionized water: sodium hydroxide aqueous solution: ammonia solution = 1:0.01:0.05 to 90% of the volume of the reaction kettle to control the reaction The temperature of the kettle is 80°C±2°C, and the three solutions in step (1) are continuously added to the reaction kettle with a pump. 4 :NaOH:NH 3 =1:2:0.5 molar ratio determines the flow ratio of the three solutions, controls the pH of the reaction solution to be 10.0, and the reaction time is 8 hours;

[0021] (3) Aging: Transfer the copper oxide suspension obtained from the reaction to another ...

Embodiment 2

[0025] The specific steps of producing copper oxide powder are as follows:

[0026] (1) Raw material solution preparation: Prepare copper sulfate aqueous solution with a concentration of 1.5 mol / liter, sodium hydroxide aqueous solution with a concentration of 8 mol / liter and ammonia solution with a concentration of 19% for standby;

[0027] (2) Reaction: Add the solution prepared in step (1) to the reaction kettle in 90% volume of the reaction kettle with: deionized water: sodium hydroxide aqueous solution: ammonia solution = 1:0.018: 0.10 volume ratio to control the reaction The temperature of the kettle is 90°C, and the three solutions in step (1) are continuously added to the reaction kettle with a pump, according to CuSO 4 :NaOH:NH 3 =1:2.5:0.7 The ratio of the molar ratio determines the flow ratio of the three solutions, the pH of the control reaction solution is 11.0, and the reaction time is 10 hours;

[0028] (3) Aging: Transfer the copper oxide suspension obtained f...

Embodiment 3

[0031] The specific steps of producing copper oxide powder are as follows:

[0032] (1) Raw material solution preparation: Prepare copper sulfate aqueous solution with a concentration of 2 mol / liter, sodium hydroxide aqueous solution with a concentration of 9 mol / liter and ammonia solution with a concentration of 20% for standby;

[0033] (2) Reaction: Add the solution prepared in step (1) to the reactor in 90% volume of the reactor with: deionized water: sodium hydroxide aqueous solution: ammonia solution = 1: 0.02: 0.15 volume ratio to control the reaction The temperature of the kettle is 100°C±2°C. Use a pump to continuously add the three solutions in step (1) into the reaction kettle, press CuSO 4 :NaOH:NH 3 =1: 3: 1 molar ratio determines the flow ratio of the three solutions, controls the pH of the reaction solution to be 12.0, and the reaction time is 12 hours;

[0034] (3) Aging: Transfer the copper oxide suspension obtained from the reaction to another reaction kett...

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Abstract

The invention relates to a preparation method of metallic-oxide powder, in particular to a method for preparing copper-oxide powder. The method for preparing the copper-oxide powder is characterized in that the metallic-oxide powder is prepared through reaction by using copper sulfate as a raw material, ammonia water as a buffering agent and sodium hydroxide as a precipitator. The method for preparing the copper-oxide powder disclosed by the invention comprises the following steps of: by using the copper sulfate as the raw material, the ammonia water as the buffering agent and the sodium hydroxide as the precipitator, firstly adding a certain proportion of copper-sulfate aqueous solution, the ammonia water and water as a base solution into a reaction kettle during the reaction, then simultaneously adding the copper-sulfate aqueous solution, the ammonia water and a sodium-hydroxide aqueous solution into the base solution, controlling the pH value of the reaction to be 10.0 to 12.0, controlling the reaction temperature at 80 DEG C to 100 DEG C, and controlling the reaction time to be 8 to 12 hours. Copper oxide prepared by the method has the advantages of high product purity, good sphericity degree, granularity controllability, low energy consumption, easiness in continuous production and the like.

Description

technical field [0001] A method for preparing copper oxide powder relates to a method for preparing metal oxide powder. Background technique [0002] Copper oxide powder is widely used in circuit board electroplating industry, ferrite magnetic materials and other electronic industries, oxidant of fireworks, green, red or blue pigments of glass, ceramics, enamel, optical glass polishing agent, desulfurization agent of oil, Catalyst for organic synthesis, manufacture of artificial gemstones, also used in gas analysis and manufacture of artificial silk, etc. At present, the production method of copper oxide powder is mainly to spray molten copper at a high temperature of about 1300°C by spraying, and combine it with oxygen in the air to form copper oxide powder. The equipment and equipment required for the preparation of copper oxide by this method The technology is difficult and the particle size is large; some copper powder or electrolytic copper powder prepared by calcining...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02B82Y40/00
Inventor 邓洪民李金霞范桂芳
Owner JINCHUAN GROUP LIMITED
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