Influence of Silica on the Lime-Free Roasting of Chromium-Containing Slag
Yu, Kai-Ping1,2,3; Chen, Bo1; Zhang, Hong-Ling2,3; Liu, Yuan-Yue2,3,5; Duan, Shao-Yong2,3; Xu, Hong-Bin2,3; Zhang, Yi2,3,4
2016-02-01
发表期刊METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
ISSN1073-5615
卷号47期号:1页码:207-215
摘要The evolution of silica during the lime-free roasting and their roles were investigated using chromium-containing slag with high content of ferric oxide and silica. The siliceous salt phases were analyzed by means of X-ray diffraction, scanning electron microscope, and energy-dispersive X-ray spectroscopy. The reaction rule involved with silicon-containing compounds in the roasting process was also discussed. The results showed that both oxidation of Cr2O3 and leaching of Na2CrO4 were influenced by the siliceous salts. It suggested that roasting temperature and the amount of alkali act as important factors for the phase transformation of silicon. NaFe(SiO3)(2) was formed in the temperature which is best for the production of Na2CrO4, while excess amount of alkali could decompose acmite into NaFeO2 and Na2SiO3. It was observed that a large amount of insoluble NaFe(SiO3)(2) took shape during the lime-free roasting when the temperature was above 1273 K (1000 A degrees C). The extracting rate of chromium from chromium-containing slag roasted at 1373 K (1100 A degrees C) was only 29.99 pct and almost no silicon was leached out.
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1007/s11663-015-0485-9
收录类别SCI
语种英语
关键词[WOS]MINERALS
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
项目资助者National Basic Research Program (973 Program) of China(2013CB632600) ; National High-tech Research and Development Program of China(2011AA060702) ; National Natural Science Foundation of China(11204304 ; 21376251)
WOS记录号WOS:000368692300024
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20597
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Fuzhou Univ, Coll Zijin Min, Fuzhou 350108, Fujian, Peoples R China
2.Chinese Acad Agr Sci, Inst Proc Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
4.Chinese Acad Engn, Beijing, Peoples R China
5.Hebei Univ Sci & Technol, Sch Chem Engn & Technol, Shijiazhuang 050018, Hebei, Peoples R China
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Yu, Kai-Ping,Chen, Bo,Zhang, Hong-Ling,et al. Influence of Silica on the Lime-Free Roasting of Chromium-Containing Slag[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2016,47(1):207-215.
APA Yu, Kai-Ping.,Chen, Bo.,Zhang, Hong-Ling.,Liu, Yuan-Yue.,Duan, Shao-Yong.,...&Zhang, Yi.(2016).Influence of Silica on the Lime-Free Roasting of Chromium-Containing Slag.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,47(1),207-215.
MLA Yu, Kai-Ping,et al."Influence of Silica on the Lime-Free Roasting of Chromium-Containing Slag".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 47.1(2016):207-215.
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