2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 6: Yagi Intl. Symp. / Metals & Alloys Processing

Editors:	Kongoli F, Akiyama T, Nogami H, Saito K, Fujibayashi A
Publisher:	Flogen Star OUTREACH
Publication Year:	2016
Pages:	480 pages
ISBN:	978-1-987820-46-1
ISSN:	2291-1227 (Metals and Materials Processing in a Clean Environment Series)

CD shopping page

The removal of arsenic and sulfur from low arsenic-bearing iron ore by roasting method

Rijin Cheng¹; Hongwei Ni¹; Hua Zhang¹; Yilin Yang¹;
¹WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, Wuhan, China;
Type of Paper: Regular
Id Paper: 157
Topic: 3

Abstract:

Arsenic existing in iron ore is one of the harmful elements because it is easily reduced and transfer into molten iron. The removal of arsenic from molten iron is relatively difficult, resulting in the iron ore containing arsenic is not convenient to be used in large scale. In view of the minor usage amount of low arsenic-bearing iron ore in ironmaking process, the removal of arsenic from low arsenic-bearing iron ore is an imperative work. In the present work, the removal of arsenic and sulfur from low arsenic-bearing iron ore by roasting has been investigated in different atmosphere systematically. The effects of roasting time and temperature on the removal efficiency of arsenic and sulfur by the roasting process were studied and the optimum roasting conditions were obtained. The arsenic and sulfur in low arsenic-bearing iron ore containing arsenopyrite can be removed effectively by the roasting method. The removal ratio of arsenic and sulfur in low arsenic-bearing iron ore increases obviously as increasing the roasting time within 1 hour and roasting temperature within 1400 K, and decreases with temperature increasing to 1500 K. The optimum conditions for arsenic and sulfur removal is roasting at 1400 K for 1 h in vacuum atmosphere and the removal ratio are 89.90% and 96.30% respectively.

Keywords:

Arsenic removal, Sulfur removal; low arsenic-bearing iron ore; Roasting; Atmosphere


References:

[1] G.S. Liang, B.G. Xu and G.D. Dong: Study of arsenic action in iron and steel smelting process, Jiangxi Metallurgy, 21 (2001), 6-9
[2] H.Z. Zhuang, S.Y. Deng and J.H. Yuan: The influence of arsenic on the performance of reinforced bar made of carbon structural steel and low alloy steel, Steelmaking, 6 (1996), 35-38
[3] Y.S. Liang: The influence of arsenic (As) on the physical properties of carbon steel, Iron and steel, 18 (1983) , 55-59
[4] X.W. Chen: Effect of trace detrimental elements on surface cracking of ingot during forging, Iron and steel, 20 (1985), 31-35
[5] Guochang JIANG, Purify Steel and Second Refining, 1996, Shanghai Science and Technology Publication, chapter 1
[6] P.A. Riveros, J.E. Dutrizac and P. Spencer: Arsenic disposal practices in the metallurgical industry, Canadian Metallurgical Quarterly, 40 (2001), 395-420
[7] J.E. Reynolds and E.L. Coltrinari, Process for recovery arsenic compouds by sodium hydroxide leaching, US Patent, US4244927. 1981, 06-13
[8] L. Curreli, C. Garbarino and M. Ghiani: Arsenic leaching from a gold bearing enargite flotation concentrate, Hydrometallurgy, 96 (2009), 258-263
[9] M. Achmovicová, P. Balaz and Z. Bastl: Characterization of the solid residue of enargite Cu3AsS4 after alkaline leaching, Physicochemical Problems of Mineral Process, 33(1999), 7-14
[10] T. William, T. Yasushi and S. Atsushi: Selective leaching of arsenic from enargite in NaHS-NaOH media, Hydrometallurgy, 101 (2010), 64-68
[11] L. Curreli, M. Ghiani and M. Surracco: Beneficiation of a gold bearing enargite ore by flotation and As leaching with Na-hypochlorite, Minerals Engineering, 18 (2005), 849-854
[12] Q. Lv, S.H. Zhang and X. Hu: Study on removal arsenic from iron ore with arsenic in sintering process, Advanced materials research, 284-286 (2011), 238-241
[13] Y.T. Li, X.M. Huang and Z.Y. Duan: Experiment study on arsenic removal from Guangxi Luocheng limonite, Ironmaking, 8 (1989), 59-65
[14] D.J. Yang, Y.Z. Zuo and J.R. Peng: Experiment study on arsenic removal from As-rich laterite by roasting, Nonferrous metals, 3 (2001), 5-7
[15] Z.L. Yin, W.H. Lu and H. Xiao: Arsenic removal from copper-silver ore by roasting in vacuum, Vacuum, 101 (2004), 350-353
[16] N. Chakraborti, D.C. Lynch: Thermodynamics of roasting arsenopyrite, Metallurgical Transaction B, 14 (1983): 239-251

Full Text:

Click here to access the Full Text

Cite this article as:

Cheng R, Ni H, Zhang H, Yang Y. The removal of arsenic and sulfur from low arsenic-bearing iron ore by roasting method. In: Kongoli F, Akiyama T, Nogami H, Saito K, Fujibayashi A, editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 6: Yagi Intl. Symp. / Metals & Alloys Processing. Volume 6. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 434-439.