Beneficiation test of a fluorite ore in Henan

The useful minerals dissemination size of Henan fluorite ore is uneven thickness.In the premise of guaranteeing the grade,flotation tests were carried out by using conventional reagents and the impact of approaches to processing middles for grade and recovery was investigated emphatically.Studies have shown that middles returned into the flow process together,clay cotent crude concentrate could get the ideal concentrate by the process of for-cleaning for 4times,increase the recovery rate;middles returned into the flow process orderly and lay down some middles included mud,is conducive to purify the flotation environment and get higher grade concentrate.However,the recovery rate is affected to some extent.The two closed circuit tests provide the technical basis for middles processing.