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Mechanical grinding recovery method for cadmium telluride film solar cells

A technology for recycling and processing solar cells, which is applied in the direction of binary selenium/tellurium compounds, selenium/tellurium oxides/hydroxides, and improvement of process efficiency. The use value of glass slag is small, etc., to achieve high comprehensive utilization rate, improve material recovery rate and recovery effect, and ensure the effect of environmental friendliness throughout the process

Inactive Publication Date: 2018-12-25
CNBM CHENGDU OPTOELECTRONICS MATERIAL
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The initial equipment investment of this process is relatively small, and the process is relatively simple, but the working environment is relatively poor
The generated glass slag has little utilization value, and the disposal and piling and environmental protection pressure are relatively high

Method used

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  • Mechanical grinding recovery method for cadmium telluride film solar cells

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] See figure 1 , The invention provides a mechanical abrasion recovery processing method for cadmium telluride thin film solar cells, including the following steps:

[0024] (1) Strip the photovoltaic film: remove the back glass and conductive electrodes of the scrapped cadmium telluride thin-film solar cell module to obtain a glass substrate with photovoltaic film, and then mechanically abrade the photovoltaic film and rinse the mechanical abrasion with water After the glass substrate, the valuable metals in the photovoltaic film layer and a small amount of solid glue all enter the water body, the washed wastewater is collected together, filtered to obtain the filter residue, and then the filter residue can be recycled thr...

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Abstract

The invention discloses a mechanical grinding recovery method for cadmium telluride film solar cells. The method comprises two steps of stripping of photovoltaic film layers and dissolving recovery ofvaluable metal, wherein the step of stripping of the photovoltaic film layers comprises the following substeps: back plate glass and conductive poles of wasted cadmium telluride film solar cell modules are removed to obtain glass substrates with photovoltaic film layers; then, the photovoltaic film layers are mechanically grinded; the glass substrates are flushed by clear water after mechanical grinding; the flushing waste water is gathered for filtration to obtain filter slag; and the valuable metal is recovered from the filter slag. The method is high in recovery rate of the valuable metaland excellent in working environment, can recycle the back plate and substrate glass to achieve high comprehensive utilization rate, improves the material recovery rate and recovery effect of the cadmium telluride film solar cells, improves the resource utilization rate, and guarantees environmental protection in the whole process of a product chain.

Description

Technical field [0001] The invention relates to a mechanical abrasion recovery processing method of a cadmium telluride thin film solar cell, belonging to the technical field of thin film photovoltaic module recovery. Background technique [0002] As traditional energy sources are gradually depleting and environmental problems are increasing year by year, new energy has gradually become the mainstream of energy strategies in various countries. Among them, the thin-film photovoltaic industry occupies an important position in new energy. Thin-film solar cells use semiconductor materials as the medium to realize the direct conversion of light and electricity. When sunlight hits the solar panel, it can directly convert sunlight energy into electrical energy without mechanical transmission and polluting by-products. [0003] Currently in the photovoltaic market, cadmium telluride thin film solar cells have been widely used in photovoltaic power generation. However, because cadmium tell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B25/06C22B17/00C22B15/00C22B34/34C01B19/04
CPCC01B19/004C22B7/007C22B15/0071C22B15/0086C22B17/04C22B25/04C22B25/06C22B34/34Y02P10/20
Inventor 彭寿马立云潘锦功殷新建陈直
Owner CNBM CHENGDU OPTOELECTRONICS MATERIAL
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