Copper indium gallium diselenide recycling method

A technology of copper indium gallium selenium and recycling methods, which is applied in the field of solar cells, can solve problems such as unfavorable environmental protection, excessive waste water, and increased recycling costs, and achieve the effects of avoiding the use of chemicals, reducing production costs, and having a wide range of uses

Inactive Publication Date: 2018-11-06
HANERGY NEW MATERIAL TECH CO LTD
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Problems solved by technology

[0004] The prior art discloses a recovery method for materials containing copper indium gallium selenide, which needs to use sodium sulfite to reduce selenium dioxide in the process of recovering selenium, so that the types of drugs used in the recovery process increase, which not only increases the recovery cost , but also produces more waste water, which is not conducive to environmental protection

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  • Copper indium gallium diselenide recycling method
  • Copper indium gallium diselenide recycling method
  • Copper indium gallium diselenide recycling method

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Embodiment Construction

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0066] see figure 1 , the copper indium gallium selenium recovery method provided by the embodiment of the present invention includes the following steps:

[0067] Step S100: Mix the CIGS-containing material with concentrated sulfuric acid to obtain a material dispersion system. The mass concentration of the concentrated sulfuric acid is selected according to the actual situation, for example, the mass concentration of the concentrated sulfuric acid is 95%-98%.

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Abstract

The invention discloses a copper indium gallium diselenide recycling method, and relates to the technical field of solar batteries. The recycling cost of copper indium gallium diselenide is reduced, and waste water emission is reduced. The copper indium gallium diselenide recycling method comprises the steps that materials containing copper indium gallium diselenide and concentrated sulfuric acidare mixed, the obtained material disperse system is roasted, and selenium dioxide, sulfur dioxide and roasted residue are obtained; selenium dioxide and sulfur dioxide are absorbed by water, and selenium dioxide is reduced by sulfur dioxide into elemental selenium; the roasted residue is aftertreated, and elemental copper, elemental indium and elemental gallium are obtained. The copper indium gallium diselenide recycling method is used for treating materials containing copper indium gallium diselenide.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a copper indium gallium selenide recycling method. Background technique [0002] Copper indium gallium selenide thin film solar cell is a kind of thin film solar cell with stable performance, strong radiation resistance and high photoelectric conversion efficiency. It is favored by the market and is the biggest hot product in the research and development, mass production and application of thin film solar cells in recent years. . [0003] At present, the copper indium gallium selenium-containing materials produced in the production process of copper indium gallium selenide thin film solar cells contain a large amount of selenium, copper, indium, gallium and other metals, and it is necessary to recover selenium, copper, Metals such as indium and gallium are recycled to the production of CIGS thin film solar cells, so as to reduce the production cost of CIGS thin film solar ce...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/06C22B7/00C22B15/00C22B58/00C25C1/12C01B19/02
CPCC01B19/02C22B1/06C22B7/001C22B7/007C22B15/0002C22B15/0071C22B15/0086C22B58/00C25C1/12Y02P10/20
Inventor 潘勇进李胜春谈笑天鱼志坚白少森
Owner HANERGY NEW MATERIAL TECH CO LTD
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