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Study on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin
Alternative TitleStudy on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin
Jiang Minghua1; Yang Bin1; Wu Jijun1; Zhai Yuchun3; Zhou Yang1
2009
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume22Issue:4Pages:291-296
AbstractThe thermal dissolved sulfuration technology is brought forward and performed based on the characteristic of low grade lead-zinc oxide ore in lanpin. Using sulfur as the sulphidizing agent in the experiment, the oxides in the sandstone and ignimbrite are changed into sulfides. The disproportionation reaction of sulfur in a solution is confirmed as 4S+3H(2)O=2S(2-)+S(2)O(3)(2-)+6H(+). The dynamics process is studied and the first-order reaction rate equation -1n(1-alpha)=k(t)t is obtained. The effects of the reactive products, stirring speed, dosage of sulfuration agent, value of pH and sulphidizing temperature on the sulfuration of oxide ore are investigated. The results indicate that the reactive apparent activation energy is 100.8 kJ/mol and the sulfuration ratio of lead-zinc oxide ore reaches 60% under the conditions of pH 5.9-7.5, the sulfuration temperature of 130 degrees C, sulfuration time of 180 min and the stirring speed of 800 r/min.
Other AbstractThe thermal dissolved sulfuration technology is brought forward and performed based on the characteristic of low grade lead-zinc oxide ore in lanpin. Using sulfur as the sulphidizing agent in the experiment, the oxides in the sandstone and ignimbrite are changed into sulfides. The disproportionation reaction of sulfur in a solution is confirmed as 4S+3H_2O=2S~(2-)+S_2O_3~(2-)+6H~+. The dynamics process is studied and the first-order reaction rate equation -1n(1- α)=k_tt is obtained. The effects of the reactive products, stirring speed, dosage of sulfuration agent, value of pH and sul-phidizing temperature on the sulfuration of oxide ore are investigated. The results indicate that the reactive apparent activation energy is 100.8 kJ/mol and the sulfu-ration ratio of lead-zinc oxide ore reaches 60% under the conditions of pH 5.9-7.5, the sulfuration temperature of 130 ℃, sulfuration time of 180 min and the stirring speed of 800 r/min.
KeywordLead-zinc oxides ore Thermal dissolved sulfuration Sulphidizing ratio Disproportionation reaction First-order reaction
Indexed ByCSCD
Language英语
Funding Project[Academy and College Yunnan province]
CSCD IDCSCD:3652907
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/143895
Collection中国科学院金属研究所
Affiliation1.Kunming Univ Sci & Technol, Fac Materials & Met Engn, Kunming 650093, Peoples R China
2.Yunnan Jinding Zinc Ltd Co, Lanpin 671401, Peoples R China
3.中国科学院金属研究所
Recommended Citation
GB/T 7714
Jiang Minghua,Yang Bin,Wu Jijun,et al. Study on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2009,22(4):291-296.
APA Jiang Minghua,Yang Bin,Wu Jijun,Zhai Yuchun,&Zhou Yang.(2009).Study on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin.ACTA METALLURGICA SINICA-ENGLISH LETTERS,22(4),291-296.
MLA Jiang Minghua,et al."Study on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin".ACTA METALLURGICA SINICA-ENGLISH LETTERS 22.4(2009):291-296.
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