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Preparation method of superfine copper oxide powder

A technology of copper oxide powder and copper ore, applied in copper oxide/copper hydroxide and other directions, can solve the problems of large particles and complicated process, and achieve the effect of small particles, uniform particle size and lower production cost.

Inactive Publication Date: 2012-04-11
HUNAN HINA NEW MATERIALS
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AI Technical Summary

Problems solved by technology

The copper oxide powder obtained by this method has good crystal morphology and large particles, but the process is complicated

Method used

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Examples

Experimental program
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Embodiment Construction

[0021] The present invention is described in detail with examples below.

[0022] Copper ore is used as raw material, and high-purity copper salt solution is obtained after leaching and purification.

[0023] The above copper salt solution is pressure sprayed under high pressure to obtain mist droplets of copper salt. The obtained copper salt mist droplets are roasted at 800 degrees under an air or oxygen atmosphere to obtain copper oxide powder, and release tail gas containing water vapor and acid gas at the same time.

[0024] The particle size of copper oxide powder is controlled by controlling dehydration time, roasting time and crystal weight time. The tail gas generated during the roasting process is sprayed and absorbed to obtain an acid solution, which can be reused in the leaching process.

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Abstract

The invention relates to a preparation method of superfine copper oxide powder. In the preparation method, copper ore is used as a raw material, the superfine copper oxide powder is prepared by adopting a spray baking method, and at the same time, the tail gas generated in a spray baking process is absorbed and returned to a production system for recycle. By utilizing the preparation method, the process flow is shortened, the particle size of copper oxide can be controlled by controlling dewatering, baking and crystal regrowth time, and the environmentally-friendly and large-scald industrial production of the superfine copper oxide powder is achieved.

Description

technical field [0001] The invention relates to mineral smelting, in particular to a preparation method of ultrafine copper oxide powder. Background technique [0002] Copper oxide powder is an important multifunctional fine inorganic material, which is widely used in dyeing, ceramics, glass and medical industries. At the same time, as the main component of the catalyst, copper oxide powder is widely used in various catalytic reactions such as oxidation and reduction. In particular, ultrafine copper oxide powder has the characteristics of small particle size, large specific surface area, and high catalytic activity, and has broader application prospects in electrical and magnetic catalysis. [0003] At present, the main methods for preparing ultrafine copper oxide powder are solid-phase reaction method and liquid-phase method. [0004] The solid phase reaction method is to fully mix the metal salt and the metal oxide according to a certain ratio, grind and then calcinate t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02
Inventor 郭力高中仁谢超张青青黄娟孙海超钟子坊
Owner HUNAN HINA NEW MATERIALS
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