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Ammonium Sulfide In Nickel Mining

processing of nickel laterite ores on the rise,traditionally, nickel has been processed from sulfide ores in an approach similar to copper processing, in which the ore is upgraded to concentrates and then smelted. as sulfide ore resources dwindle, however, processing of lateritic nickel ores is becoming of greater necessity, with many recognizing nickel laterite ores as the future of the.environmental guidelines for nickel smelting and refining,process used for nickel. chloride electrolytes are used although sulfuric acid solutions are used more often. waste characteristics air emissions sulfur dioxide (so2) is a major air pollutant emitted in the roasting, smelting and converting of sulfide ores (nickel sulfide concentrates contain 6-20% nickel and up to 30% sulfur)..recovery of valuable metals from a low-grade nickel ore,metal leaching from a low-grade nickel ore was investigated using an ammonium sulfate roasting-water leaching process. the nickel ore was mixed with ammonium sulfate, followed by roasting and finally leaching with water. during the process the effects of the amount of ammonium sulfate, roasting temperature, and roasting time on the leaching recovery of metal elements were analyzed..

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