Method for recuperating thermal energy of gases of an electrometallurgical furnace and use for making silica powder
OwnerJean-Andre Alaryinventor
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Abstract
The invention concerns a method for recuperating thermal energy of hot gases of a submerged-arc furnace designed to make metal alloys by atomization of a powder from solid particles suspended in an aqueous phase. The solid particles are, preferably, derived from the filtering of gases emitted by the electric furnace. The invention also concerns a method for making silica powder with improved properties from fumes of a silicon or ferro-silicon furnace, which consists in preparing a suspension of said fumes in water and atomizing said suspension.
Claims16
A process for manufacturing a fine silica powder comprising the recovery of silica fumes produced during the manufacture of metallurgical grade silicon or silicon alloys in a submerged electric arc furnace, the preparation of a suspension of this silica in water, and the atomisation of this suspension.
Dependencies are inferred from the claim text.