Research progress on recovery and utilization of silicon slag and diamond wire saw silicon powder waste during preparation of crystalline silicon solar cells
Research progress on recovery and utilization of silicon slag and diamond wire saw silicon powder waste during preparation of crystalline silicon solar cells
With the rapid development of crystalline silicon solar cells,the demand for crystalline silicon wafers has increased significantly.During the preparation of crystalline silicon wafer production,a large amount of silicon is lost in the form of silicon slag and diamond wire saw silicon powder waste.The recovery and recycling of silicon from silicon slag and diamond wire saw silicon powder waste is important for reducing the production cost of crystalline silicon solar cells,alleviating the shortage of crystalline silicon wafers and environmental pollution.In this paper,the existing processes and research progress of high-purity silicon recovery from silicon slag and diamond wire saw silicon powder waste were reviewed,and the advantages,drawbacks and improvement measures of different recovery processes were analyzed,which helps researchers to choose a reasonable high-purity silicon recycling strategy and provides a theoretical reference for the low-cost,green and sustainable development of the crystalline silicon solar cell industry.
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