METHOD FOR FORMING ZINC-CONTAINING MATERIALS IN ROTARY KILN Russian patent published in 1994 - IPC

FIELD: nonferrous metallurgy. SUBSTANCE: method involves drying zinc-containing materials, mainly cakes and slime of electroplating processes, mixing them with carbon-containing reducer, and feeding them into Waelz kiln. Charge of cakes and slimes is fed into kiln separately, in succession. Slime-containing charge is loaded within the time determined as T_sl=(0.2-0.4)T_rot while the amount of slime charge is found from the relation M_sl=(0.1-0.3)M_c where T_sl is the time of slime charge delivery, min; T_rot is the kiln rotation period. min; M_sl is the mass of slimes, kg; and M_c is the mass of cakes, kg. EFFECT: higher efficiency. 1 tbl