A method for preparing cuprous oxide by recycling waste copper-tungsten alloy as raw material

A copper-tungsten alloy and cuprous oxide technology is applied in the field of recycling and preparing cuprous oxide, which can solve problems such as increasing production costs, and achieve the effects of easy operation, mild reaction conditions and good crystal form.

Inactive Publication Date: 2018-10-30
LIYANG LIFANG PRECIOUS METALS MATERIAL CO LTD
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Problems solved by technology

[0003] At present, the raw materials used to prepare cuprous oxide are basically analytically pure copper acetate or copper nitrate. Chinese patents CN103395821A, CN103373739A, etc. all use analytically pure copper acetate as raw materials, and prepare cuprous oxide through methods such as reduction, which increases to a certain extent. cost of production

Method used

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  • A method for preparing cuprous oxide by recycling waste copper-tungsten alloy as raw material
  • A method for preparing cuprous oxide by recycling waste copper-tungsten alloy as raw material

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Embodiment 1

[0021] (1) Take 10g of scrap copper-tungsten alloy, and use nitric acid with a concentration of 4mol / L to leach the copper in the scrap copper-tungsten alloy once. The nitric acid leaching temperature is 40°C, the leaching time is 6h, and the amount of nitric acid is 1 times the theoretical amount. Copper nitrate stock solution, the primary leaching rate is 26.1%;

[0022] (2) pulverizing the scrap copper-tungsten alloy remaining in step (1) into micron-sized powder, the powder particle size is at 50um;

[0023] (3) Take 2g of the waste copper tungsten powder prepared in step (2), the nitric acid concentration is 6mol / L, the nitric acid leaching temperature is 40°C, the nitric acid leaching time is 30min, and the liquid-solid ratio is 1:1 to obtain a copper nitrate solution, The secondary leaching rate reaches 99.8%;

[0024] (4) The process of sodium sulfite reduction to prepare cuprous oxide, the concentration of sodium sulfite is 1mol / L, the concentration of copper nitrate...

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Abstract

The invention discloses a method of recovering and preparing cuprous oxide by taking waste copper-tungsten alloy as a raw material. The method comprises the following steps: copper in the waste copper-tungsten alloy is subjected to primary leaching by nitric acid; the waste copper-tungsten alloy after the primary leaching is pulverized, and waste copper-tungsten alloy powder is obtained; copper in the waste copper-tungsten alloy powder is subjected to secondary leaching by nitric acid; and cupric nitrate is reduced by sodium sulfite, and cuprous oxide is prepared. The method takes the waste copper-tungsten alloy as the raw material, and after leaching with nitric acid is carried out, cuprous oxide is prepared by a sodium sulfite reduction method, so that secondary utilization of the waste copper-tungsten alloy is realized, and the method is good for the environment. The method is simple and is low in cost, and prepared cuprous oxide is high in purity and good in crystal form.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of inorganic functional materials, and in particular relates to a method for recycling and preparing cuprous oxide by using waste copper-tungsten alloy as raw material. Background technique [0002] Nano-cuprous oxide, as a new type of P-type oxide semiconductor material that can be excited by visible light, has an active electron-hole pair system and exhibits good catalytic activity. In addition, it also has strong adsorption properties, low-temperature paramagnetism, etc. characteristic. It has application potential in organic synthesis, photoelectric conversion, new energy, water photolysis, dye bleaching, sterilization, superconductivity and other fields. At present, the main synthesis methods include liquid-phase synthesis, low-temperature solid-phase method, vapor-phase deposition method, nano-copper oxidation method, electrolysis method, gamma-ray interference method, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B15/00
CPCC22B7/007C22B15/0073C22B15/0089Y02P10/20
Inventor 尚通明王自伟魏成文王豪郑成沈尧胤邹超刘维桥周全法
Owner LIYANG LIFANG PRECIOUS METALS MATERIAL CO LTD
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