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OXIDATIVE PRESSURE LEACHING OF ARSENIC SULFIDE RESIDUES

Li Lan Jiang Kaixi Liu Daxing Wang Haibei (Beijing General Research Institute of Mining and Metallurgy)  
Several hydrometallurgical processes for arsenic sulfide residues are introduced.The advantages and disadvantages of some traditional processes,such as copper sulfate cementation process and ferric sulfate leaching process,are described in detail.The process principles and experimental results of oxidative pressure leaching process are also introduced.The pressure leaching process shows many advantages over other processes.It has the advantages of simplified flowsheet,high arsenic recovery and short retention time.
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