Process for producing cupric hydroxide or cupric oxide

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 basic copper 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 process of 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 ...

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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

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