2011•Industrial Minerals and ProcessingRequires access
Influence of acid on phosphate leaching rate from middle-low grade phosphate rock
Na Guo
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Abstract
To decompose Zhijin Xinhua phosphate rock from Guizhou province with hydrochloric acid,nitric acid and sulfuric acid,the influences of leaching time,the amount of acid added and the concentration of inorganic acid on the leaching rate of P2O5 were studied.The results showed that the effects of the amount of acid added and the concentration of acid on the leaching rate of P2O5 was greater.The yield of P2O5 from phosphate rock could reach 98.87%,when the phosphate rock was dissolved by nitric acid.