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Process for producing cupric hydroxide or cupric oxide

A technology of copper hydroxide and sodium hydroxide, applied in copper oxide/copper hydroxide and other directions, can solve the problems of heavy ammonia and copper ammonia ion pollution, no large-scale production, and high cost

Active Publication Date: 2012-10-03
沈祖达
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The cost of this process is high, excessive ammonia and copper ammonia ions pollute heavily, and the yield is low. At present, there is no large-scale production in China.
The second is to use the soluble cupric chloride ions produced in the circuit board industry to neutralize the alkaline cupric chloride ammonium ions to generate a large amount of copper hydroxide products mainly composed of basic cupric chloride, which cannot generate relatively pure Copper hydroxide, the product actually produced by this process cannot be said to be copper hydroxide, but can only be considered as basic copper chloride copper mud containing copper hydroxide. At present, the product produced by this method cannot be used as copper hydroxide, but As a copper-containing raw material, it is used as the basic raw material for the production of cuprous chloride and other chemical products and for the copper smelting industry
In the past, because the production technology could not meet the purity required by the market, the content in the domestic standard Shanghai Q / HG22-2032-82 could only be set at 95%, and it could not be formulated to a content greater than 98%, so it could not meet the market demand. For this reason, we conducted extensive research

Method used

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  • Process for producing cupric hydroxide or cupric oxide

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Embodiment Construction

[0007] The method for preparing copper hydroxide of the present invention will be further described in detail below in conjunction with specific examples.

[0008] Such as figure 1 As shown, the soluble copper-containing solution of copper nitrate, copper sulfate or copper chloride produced in the production of circuit boards with 1-30% copper is filtered and placed in container 1, and the copper-containing 1-30% alkaline chlorination Cuprocopper ammonium ion or the sodium hydroxide solution that is 1~45% is placed in the container 2 after filtering, and in the reactor 4, the solution in the two containers is added under stirring situation simultaneously,

[0009] When the pH in the solvent is controlled at 4.5-9 and the volume of the solution in the reactor 4 rises to more than 2000L, start to open the discharge valve at the lower outlet of the reactor 4 while feeding and reacting, and turn on the pressure filter pump for pressure filtration or centrifuge Centrifuge, wash wi...

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Abstract

The invention discloses a process for preparing copper hydroxide or copper oxide. Soluble cupriferous ions (cupric nitrate, copper chloride and copper sulphate) generated in the production of wiring boards are taken as raw materials to be synthesized with ammonium ions of basic copper chloride or sodium hydroxide to generate basic copper salt (basic copper nitrate, basic copper sulphate and basiccopper chloride), furthermore, products of basic copper salt reacts with the sodium hydroxide to generate copper hydroxide or copper oxide, and glycerin as stabilizing agent is added in. .The processof preparation has the advantages of stable products, easy washing, high purity, easy raw material achievement, high absorption rate and little environmental pollution.

Description

technical field [0001] The invention relates to a method for preparing copper hydroxide or copper oxide. Background technique [0002] Copper hydroxide is an important catalyst, chemical raw material and pesticide raw material. At present, the synthesis method of copper hydroxide is mainly composed of two kinds: the first is to synthesize copper sulfate and ammonia into copper sulfate ammonia ion and then add sodium hydroxide Copper hydroxide is formed. The cost of this process is high, excessive ammonia and copper ammonia ions pollute heavily, and the yield is low. At present, there is no large-scale production in China. The second is to use the soluble cupric chloride ions produced in the circuit board industry to neutralize the alkaline cupric chloride ammonium ions to generate a large amount of copper hydroxide products mainly composed of basic cupric chloride, which cannot generate relatively pure Copper hydroxide, the product actually produced by this process cannot ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/02
Inventor 沈祖达
Owner 沈祖达
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