METHOD OF BRIQUETTING DISPERSED FRACTIONS OF FERROALLOYS Russian patent published in 2006 - IPC C22B1/242 

FIELD: briquetting dispersed and powder-like wastes of ferroalloy process.

SUBSTANCE: proposed method includes proportioning and mixing components of charge containing dispersed fractions of ferroalloys, mainly silicon-containing ferroalloys and binder on base of alkaline aqueous solutions of caustic soda with super-dispersed silica or on base of water glass. Mixture thus obtained is molded and dried and briquettes are hardened. Prior to proportioning, dispersed fraction of ferroalloy is treated with organic binder solution followed by drying in air or under action of thermal flux at continuous mixing. Treatment is performed in aqueous solution of polyvinyl alcohol or in aqueous solution of polyacrylate solution or in anhydrous fast-drying organic solution of 646 or 647 Grade with polyvinyl butyral resin.

EFFECT: reduction of oxidation of useful components in briquetted material; enhanced dissolvability of briquettes in molten metals and alloys.

24 cl, 1 tbl, 2 ex