20130323810 | BIOLOGICAL METHOD FOR LIQUID FERRIC SULFATE MANUFACTURING - The present document describes a process for manufacturing liquid ferric sulfate from an iron sulfide material provided from ore tailings or mine tailings, the process comprising the step of contacting an aqueous solution containing the iron sulfide material with a thermotolerant bacteria culture capable of promoting oxidation of the iron sulfide material for producing liquid ferric sulfate effected without a sulfuric acid addition. | 12-05-2013 |