An efficient methodology for utilization of K-feldspar and phosphogypsum with reduced energy consumption and CO2 emissions

查看全文 作　　者：Zhixi [1]Gan;Zheng [1]Cui;Hairong [1]Yue;Siyang [1]Tang;Changjun [1]Liu;Chun [1]Li;Bin [1]Liang;Heping [2]Xie

机构地区：[1]Multi-phases Mass Transfer and Reaction Engineering Laboratory, College of Chemical Engineering Sichuan University, Chengdu 610065, China;[2]Center of CCUS and C02 Mineralization and Utilization, Sichuan University, Chengdu 610065, China

出　　处：《Chinese Journal of Chemical Engineering》索引2016年第24卷第11期,共11页

基　　金：Supported by the National Natural Science Foundation of China(21336004);the State Key Research Plan of the Ministry of Science and Technology(2013BAC12B03) 摘　　要：The issues of reducing CO_2 emissions, sustainably utilizing natural mineral resources, and dealing with industrial waste offer challenges for sustainable development in energy and the environment. We propose an efficient methodology via the co-reaction of K-feldspar and phosphogypsum for the extraction of soluble potassium salts and recovery of SO_2 with reduced CO_2 emission and energy consumption. The results of characterization and reactivity evaluation indicated that the partial melting of K-feldspar and phosphogypsum in the hightemperature co-reaction significantly facilitated the reduction of phosphogypsum to SO_2 and the exchange of K^+(K-feldspar) with Ca^(2+)(CaSO_4 in phosphogypsum). The reaction parameters were systematically investigated with the highest sulfur recovery ratio of ~ 60% and K extraction ratio of ~ 87.7%. This novel methodology possesses an energy consumption reduction of ~ 28% and CO_2 emission reduction of ~ 55% comparing with the present typical commercial technologies for utilization of K-feldspar and the treatment of phosphogypsum. 关键词：排放问题磷石膏钾长石综合利用可持续利用可持续发展自然资源工业废物

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An efficient methodology for utilization of K-feldspar and phosphogypsum with reduced energy consumption and CO2 emissions

参考文献(48)

引证文献(11)

耦合文献(87)

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