Badania nad uszlachetnianiem pyłów metodą flotacji aglomeracyjnej

Abstract

RESEARCHES ON ENRICHMENT OF VOLATIIE DUSTS BY MEANS OF AGGLOMERATING FLOTATION METHOD

Summary

The problem of using Turoszów ashes for production of refractory materials has for the first time been considered by prof. Zbigniew Tokarski, who also is the initiator of the present study. The use of huge amounts of the ashes available as a result of burning the brown coals in the Turów power plant might considerably increase the so far existing reserves of mineral row materials necessary for production of refractory materials. The mineral raw materials consist of about 35% Al₂O₃ and of relatively high percentage (6,5%) of Fe₂O₃. Under these circumstances, the process of decreasing the Fe₂O₃ contents was the main task here. During the first classification, the material underwent concentration. Classes that correspond to the grain size above 0.075 are thought to be waste materials, mainly since they are characterized by an increase in Fe₂O₃, and by an insignificant yield. The material characterized by the grain size below 0.075 was, after previous desludging, concentrated in further processes by means of agglomerating flotation. Both sludge and sludge residue were taken as material for flotation. Activation was made at pH = 6.3 and 6.7, the soap solution being used as collector. The foam product was the required waste material characterized by an increased content of Fe₂O₃. The dusts of the Turów power plant yield a concentrate that may contain no more than 3% Fe₂O₃ and about 37% Al₂O₃.