Study on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin

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	Study on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin
其他题名	Study on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin
	Jiang Minghua 1; Yang Bin 1; Wu Jijun 1; Zhai Yuchun 3; Zhou Yang 1
	2009
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	22 期号:4 页码:291-296
摘要	The 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.
其他摘要	The 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.
关键词	Lead-zinc oxides ore Thermal dissolved sulfuration Sulphidizing ratio Disproportionation reaction First-order reaction
收录类别	CSCD
语种	英语
资助项目	[Academy and College Yunnan province]
CSCD记录号	CSCD:3652907
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/143895
专题	中国科学院金属研究所
作者单位	1.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
推荐引用方式 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.