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Potential-digging revamping of a 40 kt/a sulpuric acid system

GE Yuzhen (Ammonium Phosphate Plant, Jiangsu Hengsheng Chemical Fertilizer Co., Ltd., Xinyi, Jiangsu, 221400, China)  
A 40 kt/a pyrite-burning sulphuric acid plant, designed in venturi-froth tower-wet electrostatic precipitation configuration, was revamped because of poor technical and economic indexes and serious environmental pollution. The capacity of the plant reached 60 kt/a with improved technical and economic indexes and decreased effluent by transforming feed from pyrite to solid sulphur particle and replacing some equipment.
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