Phosphate flotation with dibasic acids
AssigneeTennessee Valley Authority
InventorShuang-shii Hsieh
Life of this patent
Estimating the term…
Abstract
A phosphate ore fllotation process subjects a phosphate ore containing silica and silicates to froth flotation in the presence of a collector, said collector being a C.sub.36 high molecular weight dibasic acid comprising two carboxylic functional groups, recovering the phosphate concentrate from the overflow, and removing the separated silica and silicates in the underflow. The dibasic acids should be used in conjunction with fuel oil, not only to reduce the reagent consumption, but also to increase the grade and recovery of phosphate concentrate. The selectivity of some of these collectors is so great than an acceptable phosphate rock concentrate can be obtained from the phosphate ore in a single anionic circuit.
Claims1
An ore flotation process comprising the steps of
- (1) subjecting a phosphate ore containing silica and silicates to froth flotation in the presence of a collector, said collector consisting essentially of C.sub.36 high molecular weight dibasic acids comprising two carboxylic groups;
- (2) recovering the phosphate concentrate from the overflow;
- and
- (3) removing the separated silica and silicates in the underflow.
Dependencies are inferred from the claim text.