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Method for preparing monoclinic system crystalline state cupric oxide and uses thereof

A monoclinic and copper oxide technology, applied in the direction of copper oxide/copper hydroxide, etc., can solve the problems of difficult separation of water-soluble salts, restrictions on the industrial production of copper oxide, complete separation of difficult copper oxide, etc., and achieve production costs Low, good fluidity, high purity effect

Inactive Publication Date: 2008-12-10
SHENZHEN SHENTOU ENVIRONMENT TECH CO LTD
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Problems solved by technology

Therefore, the copper oxide prepared by this method has low activity and is not suitable for applications with high chemical reactivity requirements.
[0006] Although the copper oxide prepared by the second method has high activity, the basic salt, copper hydroxide or copper oxide generated during the neutralization reaction between copper salt and alkali are all nano-sized particles that are easy to agglomerate. A large amount of water-soluble salts generated aggregate to form a viscous sludge-like substance, in which the water-soluble salts are difficult to separate, requiring repeated washing, pressure filtration and other processes, resulting in a large amount of washing wastewater
Even so, it is difficult to completely separate copper oxide from other salts, which restricts the industrial production of copper oxide

Method used

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  • Method for preparing monoclinic system crystalline state cupric oxide and uses thereof
  • Method for preparing monoclinic system crystalline state cupric oxide and uses thereof
  • Method for preparing monoclinic system crystalline state cupric oxide and uses thereof

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Embodiment Construction

[0031] The following examples are further explanations and illustrations of the present invention, and do not constitute any limitation to the present invention.

[0032] 1. Preparation of crystalline basic copper chloride

[0033] Take 400 kg of industrial grade solid ammonium chloride and add 8M 3 In the FRP reaction tank, inject 1500 liters of tap water, stir while passing steam to dissolve ammonium chloride and preheat to 75°C, add a small amount of water to 2M 3 . In addition, the copper content of 150 g / liter, the refined acidic copper chloride etching waste liquid with a pH value of 2 and 6% ammonia water were each 3.0M 3 , respectively preheated to 70-75°C in their respective raw material storage tanks. Start the stirring paddle of the reaction tank, open the raw material pumps of copper waste liquid and ammonia water and adjust the flow rate of the flowmeter at the same time, so that the two are added to the reaction tank at a speed of about 100 liters per minute...

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Abstract

The invention relates to a method for preparing monoclinic crystal system crystalline copper oxide and an application of the monoclinic crystal system crystalline copper oxide. The method comprises the following steps: a. a sodium hydroxide or potassium hydroxide water solution with a concentration of between 5 and 50 percent and a volume of between 30 and 80 percent of the volume of a reaction vessel is added into the reaction vessel, preheated to between 30 and 100 DEG C, added with crystalline copper chloride hydroxide with the addition between 1 / 6 and 1 / 3 of the mol number of sodium hydroxide, and reacted for 10 to 60 minutes at a reaction temperature of between 30 and 100 DEG C and under the condition of stirring; b. crystalline copper oxide is prepared after washing, pumping filtration, centrifugation and drying of reacted materials; and c. the crystalline copper oxide is crushed by the physical method, and the activated copper oxide with fine granularity are prepared. The method is easy to realize separation of the copper chloride hydroxide and the copper oxide with other water-soluble background salts, and has a simple technique and low production cost; and the crystalline copper oxide prepared has high yield, high purity, high activity, good quality and is suitable for mass production.

Description

【Technical field】 [0001] The invention relates to a method for preparing copper oxide, in particular to a method and application for preparing monoclinic crystalline copper oxide by utilizing etching waste liquid in the printed circuit board industry. 【Background technique】 [0002] Copper oxide is widely used in chemical industry, ceramics, dyes, glass, electronics and other industries, and is an important chemical raw material. At present, the preparation methods of copper oxide can be mainly divided into two categories: [0003] One is the copper powder oxidation method. This method is to calcinate copper ore and waste copper in a furnace to produce crude copper oxide, and then react with sulfuric acid to form copper sulfate. Copper sulfate is reduced with iron (or aluminum) to form pure copper powder. , and then obtained by oxidizing and roasting, such as the manufacturing method of copper oxide powder disclosed in the application number 98100674.4. [0004] The second...

Claims

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Application Information

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IPC IPC(8): C01G3/02
Inventor 陈昌铭温炎燊李丹阳刘艳帅毛鹏举
Owner SHENZHEN SHENTOU ENVIRONMENT TECH CO LTD
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