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Resource utilization of phosphogypsum and economic benefit analysis

GONG Jiazhu;Chengdu Qianlijin Scientific and Technological Innovation Co.,Ltd.;  
The values of phosphogypsum as a resource of both sulphur and calcium are disclosed. The technical development history of co-production of sulphuric acid and cement with phosphogypsum is reviewed. Technical difficulties faced today and economic factors are analyzed. An innovative technology proposed can ensure total w( P 2 O 5) of feedstock phosphogypsum consistently below 0. 6%, realizing a giant leap in technical economics.
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