Influence and Regulation of Calcium and Magnesium Ions on the Floatability of Bastnaesite in Salicylhydroxamic Acid Flotation System
Both metal ions and slurry temperature have a negative impact on the floatability of fluorocarbon cerium ore,thereby affecting the grade and recovery rate of bastnaesite concentrate.Through the flotation test of bastnaesite pure mineral,the paper investigated the effects of different external environmental factors on the floatability of fluorocarbon cerium ore and regulatory control,with salicylhydroxamic acid as the collector.The experimental results showed that metal ionsand and slurry temperature have different degrees of inhibition on the flotation process of bastnaesite.The floatability of bastnaesite inhibited by metal ions and slurry temperature can be adjusted by adding lead nitrate as activator.Using lead nitrate as activator and mixing lead nitrate with salicylhydroxamic acid in advance can improve the floatability of bastnaesite inhibited by metal ions.The ratio of salic hydroxamic acid to lead nitrate was between 5∶(3～1),and the recovery rate of bastnaesite was more than 90％.
salicylhydroxamic acidmetal ionsfloatabilityregulatory control
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