关键词: 含钒石煤, 选矿预富集, 浮选, 重选, 擦洗

Abstract: In China，problems of low vanadium grade and large throughput，high acid consumption and low vanadium recovery existing in vanadium extraction technology are the key factors in restricting its development.So the study of vanadium pre-concentration technology from vanadium-bearing stone coal has important significance.According to the technologies and practices introduced in some literatures，the process of single flotation，single gravity concentration，gravity-flotation separation and classification-scrubbing separation for vanadium-bearing stone coal are effective process to solve the problems which restrict the industrial development of vanadium extraction from stone coal based on the study and analysis of mineral compositions and vanadium occurrence in our country .Finally，it is stressed that the process for vanadium pre-concentration from stone coal should be simple under the principle of low production costs，unified with the environmental benefits in economic benefits.Separation of contaminations which have strong effect on the subsequent extraction technology，development of new flotation reagents and application of new equipment for treating fine vanadium-bearing minerals also should be taken seriously in the stage of vanadium pre-concentration.

Key words: Vanadium-bearing stone coal, Pre-concentration, Flotation, Gravity concentration, Scrubbing