工业硅炉冶炼生产炉底上涨的探究

EXPLORATION OF FURNACE BOTTOM RISING IN THE PRODUCTION OF INDUSTRIAL GRADE SILICON

对某工业硅厂清炉时取出的炉底硅样品做XRD分析,验证了炉底上涨的原因是碳化硅在炉内的生成和分解没有维持动态平衡所致。用HSC热力学软件研究了碳化硅对二氧化硅还原过程的影响,并探究了碱金属盐或氧化物对炉底上涨的抑制作用以及含铁物质处理炉底上涨的可行性。

In this paper,the generation and decomposition of silicon carbide did not maintain a dynamic balance in furnace which resulted in the furnace bottom rising. The result was verified by the XRD analysis of the furnace bottom industrial grade silicon samples from a factory＇s furnace cleaning. The effect of silicon carbide on silicon dioxide reduction was studied by HSC thermodynamics software. The inhibition of alkali metal salts or oxides and the operation feasibility of iron-bearing material for bottom rising were also explored in industrial grade silicon production.