铁基脱硫渣再生制备铁酸钠及其循环脱硫

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李一飞，彭志宏*，王一霖，刘桂华，周秋生，齐天贵，李小斌

中南大学冶金与环境学院，难冶有色金属资源高效利用国家工程实验室，湖南长沙 410083

收稿日期:2017-12-19修回日期:2018-03-25出版日期:2018-12-22发布日期:2018-12-19
通讯作者:彭志宏

基金资助:国家自然科学基金项目资助;国家自然科学基金项目资助

The regeneration of sodium ferrite from iron-based desulfurization residue and its circulation desulfurization

Yifei LI, Zhihong PENG*, Yilin WANG, Guihua LIU, Qiusheng ZHOU, Tiangui QI, Xiaobin LI

National Engineering Laboratory for Efficient Utilization of Refractory Non-ferrous Metals Resources, School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China

Received:2017-12-19Revised:2018-03-25Online:2018-12-22Published:2018-12-19
Contact:PENG Zhi-hong Zhi-hongZhi-hong

摘要/Abstract

摘要： 用Fe2O3与Na2CO3制备铁酸钠用于脱除含硫铝酸钠溶液中的硫，采用氧化焙烧及水浸方式对铁基脱硫渣(NaFeS2?2H2O)进行再生，研究了其循环脱硫效果. 结果表明，铁基脱硫渣于950℃下在氧化性气氛中焙烧1 h，可除去脱硫渣中70%的硫；将焙烧渣水浸，硫含量降至0.2%以下，总硫去除率达99%. 将除硫后的浸出渣再制备铁酸钠用于循环脱硫，脱硫率可达67.65%，与初始脱硫剂的脱硫率(69.09%)相当，可实现铁基脱硫剂的再生循环. 焙烧时渣中硫主要以SO2气体排出，剩余可溶性Na2SO4则在水浸过程中进入溶液而被除去.

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李一飞彭志宏王一霖刘桂华周秋生齐天贵李小斌. 铁基脱硫渣再生制备铁酸钠及其循环脱硫[J]. 过程工程学报, 2018, 18(6): 1219-1225.
Yifei LI Zhihong PENG Yilin WANG Guihua LIU Qiusheng ZHOU Tiangui QI Xiaobin LI. The regeneration of sodium ferrite from iron-based desulfurization residue and its circulation desulfurization[J]. Chin. J. Process Eng., 2018, 18(6): 1219-1225.

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