What are the main methods for selecting spodumene?
Spodumene beneficiation methods are hand-selected method and the flotation, the flotation method is flotation method and reverse flotation, flotation is frequently used, its essence is finely ground ore, flotation spodumene In the alkaline slurry of sodium hydroxide or sodium carbonate, after high concentration, strong stirring, multiple washing and de-sludge, adding fatty acid (such as oleic acid) or its soap as a collector to directly float the spodumene : After three selections, a spodumene concentrate with a grade greater than 5% LiO 2 and a recovery of 70% to 75% can be obtained. A mine ore in Xinjiang, China, contains 1.3% LiO 2 . After normal temperature flotation, the grade of spodumene concentrate is 4% to 5%, and the recovery rate is 85% to 90%.
The reverse flotation process of spodumene is to inhibit the spodumene in a lime-adjusted alkaline medium using dextrin, starch, etc., and use a cationic collector (such as the acetate alcohol of dextrin) to float the silicate. A gangue mineral, the product in the tank is a spodumene concentrate, and if necessary, an HF resinate foaming agent is used to further extract iron minerals.
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