A METHOD FOR PREPARING SILICON TETRAFLUORIDE, A METHOD FOR ISOLATION OF THE SILICON TETRAFLUORIDE FROM OXYGEN AND HIGHLY VOLATILE ADMIXTURES, A METHOD FOR PREPARING SILICON POWDER FROM THE SILICON TETRAFLUORIDE

摘要

A method for preparing silicon tetrafluoride, a method for isolation of the silicon tetrafluoride from oxygen and highly volatile admixtures, a method for preparing silicon powder from the silicon tetrafluoride, a method for washing off the silicon powder from electrolyte and admixtures. Use of the invention allows to simplify the process for obtaining the silicon powder, reduce the cost price and increase the grade of purity.