2011•Industrial Minerals and ProcessingRequires access
Process of leaching P_2O_5 from phosphate concentrate
Qin Zhang
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Abstract
The influences of phosphoric acid mass fraction,sulfuric acid stoichiometric ratio,temperature,liquid-to-solid ratio on P2O5 leaching rate from phosphate concentrate produced from a Phosphate Mine in Guizhou province were studied.The optimum leaching conditions obtained from the experiments were that phosphoric acid mass fraction 23 %,sulfuric acid stoichiometric ratio 1.1,temperature 80 ℃,liquid-to-solid ratio 4∶1.Under the conditions,the leaching rate of P2O5 was 96.84%.