公开(公告)号：US20210331929A1

公开(公告)日：2021-10-28

申请号：US17156161

申请日：2021-01-22

申请人： NORTH MINZU UNIVERSITY

发明人： Zhilin SHENG ,  Xuetao LUO ,  Liuqing HUANG ,  Jinfu MA ,  Wang SHENG ,  Hui LU ,  Chunping HOU ,  Zhanlin CHEN

IPC分类号： C01B33/021

摘要： A device and a method for producing a high-purity industrial silicon, wherein the device is a refining ladle provided with a steel plate layer, a heat insulation layer, a heat preservation layer, a protective layer and a working layer from outside to inside. The refining ladle is provided with two conical oxygen inlet channels and two conical argon inlet channels at the bottom. The method comprises: preparing a molten silicon with temperature≥2200° C.; pouring the molten silicon into a refining ladle after introducing oxygen and argon thereto and keeping the gas pressure at 1 standard atmospheric pressure, and keeping the molten silicon at 1700-1900° C.; adding a slag-forming agent thereto, and introducing oxygen and argon from the refining ladle bottom, obtaining a slag molten silicon; cooling the slag molten silicon to ambient temperature, solidifying and separating, obtaining a high-purity industrial silicon.