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Metal Mine ›› 2016, Vol. 45 ›› Issue (02): 61-65.

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Experiment on Granulation-Magnetic Roasting-Low Intensity Magnetic Separation of Specularite Ore at 0~1 mm

Qu Wangang,Chen Tiejun,Zhang Yimin   

  1. School of Resource and Environment Engineering,Wuhan University of Science and Technology,Wuhan 430081,China
  • Online:2016-02-15 Published:2016-03-11

Abstract: Magnetic roasting process with rotary kiln is an effective method to deal with specularite ore in Jingtieshan,While specularite ore at 0~1 mm can′t be roasted directly.Grinding and pelletizing process is too complex.In order to develop and utilize the specularite ore at 0~1 mm,granulation-magnetic roasting-magnetic separation process was carried out.The results show that the process condition with carbon content of 2.5%,dosage of bentonite is 1%,dosage of water is 8%,the size of granulation is 3~5 mm,after dried the pellets at 100 ℃,the roasting temperature of 750 ℃,the roasting time of 60 min,the grinding fineness(-0.045 mm) of 80% and the magnetic intensity of 80 kA/m,iron concentrate with iron grade of 52.85% and iron recovery of 86.33% was obtained and provides a new idea for the use of specularite at 0~1 mm.

Key words: Specularite, Granulation, Magnetic roasting, Magnetic separation