Dissolution Research of Platinum, Palladium and Rhodium Enriched Ferroalloy
Received:September 23, 2015   Revised:September 25, 2015   Accepted:September 28, 2015      Published Online:February 23, 2016
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DOI:10.3969/j.issn.1007-7545.2016.03.013
KeyWord:spent automobile exhaust catalysts; plasma melting method; resource regeneration; PGMs concentrate
                             
AuthorInstitution
Wu xilong 贵研资源(易门)有限公司
he xiaotang 贵研资源易门有限公司
Li hongmei 贵研资源易门有限公司
zhao jincheng 贵研资源易门有限公司
SHI Qiu-jie 贵研资源易门有限公司
TANG Yong-song 贵研资源易门有限公司
li yong 贵研资源易门有限公司
wang huan 贵研资源易门有限公司
zhao yu 贵研资源易门有限公司
LEI Ting 昆明冶金高等专科学校
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Abstract:
      Ferroalloy enrichment with platinum, palladium and rhodium from plasma melting of spent auto catalysts was applied as raw material. The effects of ratio of liquid to solid, leaching temperature, leaching time, and dosage of oxidant on leaching rates of Pt, Pd, and Rh from ferroalloy were investigated. The results show that leaching rate of Pt, Pd, and Rh is 57.29%, 62.12% and 25.35% respectively under the optimum conditions including concentration of hydrochloric acid of 6 mol/L, stirring speed of 250 r/min, ratio of liquid to solid of 10︰1, leaching temperature of 80 ℃, leaching time of 2 h, and dosage of oxidant sodium chlorate of 1︰1.
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