Abstract: Fluorite is an important raw material to fluoride industry.Based on the difference of associated mineral composition,fluorite ores can be divided into quartz type,calcite type,barite type and polymetallic intergrowth type.Summarization of the research status on flotation process technology of different types of fluorite ores will be conducive to the advancement and development of fluorite flotation process technology.As shown from the research and practice,quartz type fluorite is easy to flotation separation,using normal water glass to depress quartz and fatty acid to collect fluorite.Eligible fluorite concentrate can be achieved by enhanced grinding when fluorite is finely disseminated.Calcite type fluorite is difficult to flotation due to the similarity of floatability between calcite and fluorite.Acidic water glass or composite depressant is generally needed to selectively depress calcite.As for barite type fluorite,flotation separation process of barite and fluorite bulk flotation firstly and then depressing barite with organic depressant such as starch,tannin extract and sodium lignosulphonate or composite depressant is usually applied.For polymetallic intergrowth type fluorite,selective floatation process is usually used,which means sulfide minerals will be floated firstly with sulphydryl collector,and then fluorite can be floated with fatty acid collector.Practice indicates that choice of combined reagents and development of new reagents has an extensive application prospect in the flotation of refractory fluorite ores and is an important research aspect to fluorite flotation.

Key words: Fluorite, Flotation technology, Flotation reagent, Research status