An Investigation into Magnetic Roasting-Separation of Refractory Iron Ore in Suspended State

Abstract:

Aiming at the disadvantages of traditional magnetic roasting process, suspension calcining process was suggested to dispose refractory iron ore. The experiment indicated that under the conditions of 750°C~850°C, CO volume percentage was 1%, the limonite and siderite could efficiently transformation into magnetite, which only needed 10~20 secs. Tests of roasting-magnetic separation could attained results as: concentrate iron grade be 49.26%, recovery of iron be 87.28%.

• Periodical: Applied Mechanics and Materials (Volumes 584-586)
• Pages: 1097-1102
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.584-586.1097
• Online since: July 2014
• Authors: Qi Li, Yan Xin Chen, Qiang Song, Yan Fei Yao
• Keywords: Limonite, Magnetic Roasting-Separation, Siderite, Suspended State

References

[1] Jun Qiu, Ping Chen, Shu Gang, etc. Iron ore Processing technology (2009). In Chinese.

[2] Weibing Li, Baoping Liu, Zhanjin Chen, etc. Metal Mine (2004. 3). In Chinese.

[3] Yafeng Ren, Yongfu Yu. Metal Mine(2005. 11) . In Chinese.

[4] M.I. NASR and M.A. YOUSSEF. Optimization of Magnetizing Reduction and Magnetic Separation of Iron Ores by Experimental Design [J]. ISIJ International，1996，36(6)：631-639.

DOI: 10.2355/isijinternational.36.631

[5] Kawahara and Masayasu. Dilute sulphuric-acid lerching of garnierite ore after magnetic-roasting the ore mixed with iron powder[J]. International Journal of Mineral Processing，1985，19(7)：285-296.

DOI: 10.1016/0301-7516(87)90048-2

[6] EI-TAWIL.S. Z, Morsi.I. M, Yhhia.A. and Francis A.A. Alkali. Reductive Roasting of Ilmenite ore[J]. Canadian Metallurgical Quarterly，1996，35(1)：31-37.

DOI: 10.1179/cmq.1996.35.1.31

[7] Uwadiale G.G.O.O. . Magnetizing reduction of iron ores [J]. Mineral Processing and Extractive Metallurgy Review，1992，11(1)：1-19.

DOI: 10.1080/08827509208914211

[8] Luige Piga, Fausto Pochetti. Luisa Stoppa. Recovering Metals from Red Mud Generate duing Alumina Production [J]. JOM，1993，(4)5：54-59.

DOI: 10.1007/bf03222490

[9] Xiang Qnfang, Liang Xiaohong, Schiesinger Mark E. etal. Low temperature reduction of ferric iron in red [J]. Light Metals: Proceeding of Session, TMS Annual Meeting，2000(2)：157-162.

[10] Haixia Song, Delong Xu, Hui Li. Research on the SusPension Magnetie Roasting of Siderite. Xi'an University of Architecture& Technology Journal (natural science edition)(2007). In Chinese.

[11] Shaowu Jiu, Delong Xu, etc. Metal Mine(2008. 3). In Chinese.

[12] Delong Xu. Theory and Practice of Cement Suspension Preheater and Decomposition Technique(2002) . In Chinese.