The selection method of metaloide silicon chemical quality which has better performance in the direct process for the manufacture of organo halosilanos and selection method of silicon chemical quality during the production process of silicon.

摘要

The selection method of silicon with improved performance.Metalloid of rose with better performance in the direct process for the manufacture of organo halosilanos is selected by (a) measurement of the temperature of each batch of silicon metalloid both during refining and during the casting of silicon metalloid; (b) measuring the level of impure HSAs elementary in each batch of metalloid metalloid silicon after the refining of silicon; (c) estimate of the proPriedades phase of slag produced during refining of silicon metalloid based on equilibrium calculations using the incremental levels of impurities and the measured temperatures of each batch of metalloid silicon, and (d) selecting a silicon metalloid chemical quality for Use in the direct process for the manufacture of organo halosilanos based on properties of the slag so that prescribed;And the density of the slag viscosity and melting point of slag are within acceptable ranges and predetermined for each individual lot.