Waste silicon powder treatment system and method

• Main Authors: XIA JINJING, LIU FEI, WANG TONGSHUAI, YANG DIAN, FAN XIECHENG, CAI JINGCHENG, ZHOU RUIXIN, KOU XINGYU
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention provides a waste silicon powder treatment system and method, and the system comprises a waste silicon powder stirrer which comprises a tank body, a jacket sleeving the periphery of the tank body, and a gas stirrer arranged in the inner cavity of the tank body; a first cavity is defined by the peripheral side wall of the tank body and the jacket, and the jacket is provided with a cooling liquid inlet and a cooling liquid outlet which are respectively communicated with the first cavity; a discharge port of the tank body is communicated with a feed port of the blowing type sorting machine; the available material outlet of the blowing type sorting machine is communicated with the feeding hole of the recycling device, and the discharging hole of the recycling device is communicated with the feeding hole of the fluidized bed reactor. By adopting the method for treating the waste silicon powder, impurities in the waste silicon powder can be effectively removed, the silicon powder obtained after impurit