|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||7th International Symposium on High Temperature Metallurgical Processing
||KK-7: Recovery of Nickel and Copper from Polymetallic Sulfide Concentrate through Salt Roasting Using NH4Cl
||Cong Xu, Hongwei Cheng, Guangshi Li, Changyuan Lu, Xingli Zou, Xionggang Lu, Qian Xu
|On-Site Speaker (Planned)
The roasting of nickel-bearing sulfides is a very complex but important process which has not been adequately characterized. Combination of X-ray diffraction and scanning electron microscopy has been proved to be useful for such experiments. The leaching results of nickel, copper, iron and cobalt was analyzed by ICP methods. Process possibility of polymetallic sulfide concentrates through a three-step procedure (oxidation roasting - chlorination - water leaching) was suggested. Ammonium chloride could react with nickel/copper oxides to produce intermediate complexes. At the temperature range of 280~340 oC, these complexes further decomposed to the relevant simple chlorides. Roasting sulfide concentrate using NH4Cl is effective for complex ores.
||Planned: A print-only volume