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Active copper oxide powder preparation method

A technology of active copper oxide and copper plate, applied in the direction of copper oxide/copper hydroxide, etc., can solve the problems of long process flow of copper oxide, difficult equipment and technology, and large particle size.

Inactive Publication Date: 2015-02-04
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 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 technology required for the preparation of copper oxide by this method It is more difficult and has a larger particle size; some copper powder or electrolytic copper powder prepared by calcining chemical reduction method at a high temperature of 700-800°C 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

[0015] A kind of production method of activated copper oxide powder, its concrete steps are as follows:

[0016] (1) Raw material solution preparation: Prepare a 30% ammonium bicarbonate aqueous solution and an 18% ammonia solution for later use;

[0017] (2) Reaction: to a volume of 6m 3 Add the solution prepared in step (1) to the reaction kettle in 90% volume of the reaction kettle with: ammonia bicarbonate solution: ammonia solution = 1: 3 volume ratio, and add 6×10 copper plates for swirl electrolysis 3 L×90%×90g / L×10 -3 =486kg, turn on the stirring drum to inject compressed air, the air supply volume is 110m 3 / h, react until the copper ion concentration in the solution reaches 90g / L to stop the reaction;

[0018] (3) Ammonia distillation: transfer the copper-ammonia complex solution obtained by the reaction to another reaction kettle through precision filtration, control the reaction temperature at 70°C under a slight negative pressure of 10Pa, and stop when the copp...

Embodiment 2

[0022] A kind of production method of activated copper oxide powder, its concrete steps are as follows:

[0023] (1) Raw material solution preparation: prepare 40% ammonia bicarbonate solution and 19% ammonia solution for later use;

[0024] (2) Reaction: to a volume of 6m 3 Add the solution prepared in step (1) to the reaction kettle with 90% volume of the reaction kettle: ammonia bicarbonate solution: ammonia solution = 1: 2.5 volume ratio, add the swirl copper plate 6×10 3 L×90%×60g / L×10 -3 =324kg, open the mixing drum to inject compressed air, the air supply volume is 120m 3 / h, react until the copper ion concentration in the solution reaches 60g / L to stop the reaction;

[0025] (3) Ammonia distillation: Transfer the copper-ammonia complex solution obtained from the reaction to another reaction kettle through precision filtration, control the reaction temperature at 60°C under a slight negative pressure of 10Pa, and stop when the copper ion concentration in the solution...

Embodiment 3

[0029] A kind of production method of copper oxide powder, its concrete steps are as follows:

[0030] (1) Raw material solution preparation: prepare 50% ammonia bicarbonate solution and 20% ammonia solution for later use;

[0031] (2) Reaction: to a volume of 6m 3 In the 90% volume of the reaction kettle, add the solution prepared in step (1) to the reaction kettle with: ammonia bicarbonate solution: ammonia solution = 1: 2 volume ratio, and add a swirl copper plate 6×10 3 L×90%×100g / L×10 -3 =540kg, turn on the stirring drum to inject compressed air, the air supply volume is 110m 3 / h, react until the copper ion concentration in the solution reaches 100g / L to stop the reaction;

[0032] (3) Ammonia distillation: transfer the copper-ammonia complex solution obtained by the reaction to another reaction kettle through precision filtration, control the reaction temperature at 80°C under a slight negative pressure of 5Pa, and stop when the concentration of copper ions in the so...

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PUM

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Abstract

The invention relates to an active copper oxide powder preparation method which is characterized in that: a copper ammonia complex solution is prepared from a copper plate as a raw material by use of ammonia leaching method, by precision filtration and micro negative pressure evaporation basic copper carbonate is obtained, and an active copper oxide powder product is obtained by low temperature calcination. When in reaction, first a certain proportion of ammonia water, water and ammonium hydrogen carbonate are added into a reaction kettle to be used as a base solution, a certain mass of cyclone copper plate is added into the base solution, air is blown into the reaction kettle, stirring is started for reaction at room temperature, the reaction time is controlled in 6-12 hours to ensure the concentration of copper ions to achieve preparation requirements, and the active copper oxide powder product is obtained by precision filtration, evaporation, solid-liquid separation and calcinations of the prepared copper ammonia solution. The copper oxide prepared by the method has high product activity, high purity, controllable granularity, low energy consumption, easy continuous production and other advantages.

Description

technical field [0001] The invention belongs to the technical field of copper oxide powder, and in particular relates to a method for preparing a copper-ammonia complex solution by using a swirling copper plate as a raw material and adopting an ammonia immersion method, and producing active copper oxide powder through liquid preparation, reaction, ammonia steaming, and washing and calcining processes. method. 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. [0003] At present, the production method of copper oxide powder is mainly to spray molten copper at a high temperature of about 130...

Claims

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Application Information

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IPC IPC(8): C01G3/02
CPCC01G3/02
Inventor 张连亮宋谋通王清宏王文鹏黄振元
Owner JINCHUAN GROUP LIMITED
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