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Method for preparing nano cuprous oxide by using copper-containing waste mobile phone circuit board as raw material

A technology of nano-cuprous oxide and waste printed circuit, which is applied in the field of preparing nano-cuprous oxide, and achieves the effects of high yield, mild reaction process and low cost

Pending Publication Date: 2022-07-29
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] So far, the method of recovering copper from waste circuit boards with environmental protection and energy saving, simple process and low recycling cost to prepare nano-cuprous oxide products required by industry has not been reported.

Method used

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  • Method for preparing nano cuprous oxide by using copper-containing waste mobile phone circuit board as raw material
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  • Method for preparing nano cuprous oxide by using copper-containing waste mobile phone circuit board as raw material

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Experimental program
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Embodiment 1

[0028] 1) Simulation experiment design steps:

[0029] Emulsion Membrane Extraction Steps

[0030] 1) Accurately weigh copper nitrate, and use ultrapure water to prepare a simulated solution with a copper content of 1000-5000 ppm for use.

[0031] 2) Take quantitative surfactant Span 80 2-10%, carrier Lix984 2%-10%, liquid paraffin 1-5%, membrane solvent kerosene 75-95ml, mix well, then add an equal volume of 3%-9W% ascorbic acid solution , the emulsification reaction is carried out by high-speed stirring, the rotating speed is 3000-4000r / min, and the stirring time is 10-25min to obtain an emulsion.

[0032] 3) Adjust the pH of the simulated solution to 7-9, add the emulsion, the volume ratio of the emulsion to the simulated solution is 1:3-5, stir rapidly, the rotation speed is 300-400r / min, the stirring time is 5-15min, and then quickly transfer to In the separatory funnel, let stand for stratification, the upper layer is the emulsion after extraction, and the lower layer ...

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Abstract

The invention relates to a method for preparing nano cuprous oxide by taking a copper-containing waste mobile phone circuit board as a raw material. The method comprises the following steps: 1) heating, stirring and dissolving crushed and ground powder of the waste mobile phone circuit board by using dilute nitric acid, and filtering to obtain an acid leaching solution; (2) uniformly mixing an oil-phase component surfactant Span80, a carrier Lix984, liquid paraffin and a membrane solvent kerosene, and then adding an isometric ascorbic acid solution while stirring at a high speed to obtain an emulsion; and 3) diluting the acid leaching solution with water, adjusting the pH value to 7-9, adding the emulsified liquid, stirring, then transferring into a separating funnel, separating, and standing. And 4) transferring the upper-layer emulsion to a centrifuge tube, adding absolute ethyl alcohol, centrifuging, washing, evaporating ethyl alcohol from a solid containing a small amount of ethyl alcohol to obtain the product nano cuprous oxide, and recovering the ethyl alcohol. The method is simple in process, low in recovery cost, environmentally friendly and reliable in quality.

Description

technical field [0001] The invention relates to a method for preparing nano cuprous oxide by using waste mobile phone circuit boards containing copper elements as raw materials. Background technique [0002] Nano cuprous oxide is an important chemical raw material with unique optical, electrical and photoelectrochemical properties, as well as strong adsorption properties, low temperature paramagnetic properties, etc. It is used in organic synthesis, photoelectric conversion, new energy, water light It has wide application potential in the fields of dye solution, dye bleaching, sterilization, superconductivity, etc. Currently, it is mainly used in advanced treatment of dye wastewater, marine antifouling coatings, solar cells, etc. With the further increase in the demand for clean energy and the further improvement of the energy density and stability requirements of solar cells, the market demand for high-performance nano-cuprous oxide is increasing. [0003] The currently di...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y40/00C22B7/00C22B15/00C22B3/30
CPCC01G3/02C01G3/003B82Y40/00C22B7/007C22B15/0073
Inventor 徐鹤王广正
Owner NANKAI UNIV
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