METHOD FOR PRODUCING FLUORSPAR BRIQUETTES Russian patent published in 2003 - IPC

FIELD: metallurgy. SUBSTANCE: method involves mixing small-grain concentrate with combined binder; pressing resultant mixture at normal (room) temperature and strengthening briquettes by holding them under natural conditions. Combined binder comprises mixture of slaked lime and molasses with solid content of 58-70%, said mixture being introduced in an amount of 5-11 wt% of concentrate at slaked lime and molasses ratio of 1:1 on the basis of dry weight. Molasses is preliminarily heated to 50 C and slaked lime is supplied for mixing in dry state. Specific pressure is 180-220 t/sq.m. Method may be used for preparing ores and concentrates for melting in the process of manufacture of fluorspar briquettes and allows said briquettes to be produced without necessity of burning process. Strength of said briquettes meets requirement accepted in metallurgy and sufficient for transportation thereof without damage, and possesses improved moisture resistance allowing said briquettes to be stored in open air. EFFECT: increased efficiency and enhanced reliability in operation. 4 cl, 1 tbl