自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 17    No. 4    August 2010

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Two-step flotation recovery of iron concentrate from Donganshan carbonaceous iron ore
YIN Wan-zhong(印万忠)1, HAN Yue-xin(韩跃新)1, XIE Feng(谢锋)2

1. School of Resource and Civil Engineering, Northeastern University, Shenyang 110004, China;
2. Department of Materials Engineering, University of British Columbia, Vancouver V6T IN6, Canada

Abstract:The flotation of pure and natural carbonaceous iron ore samples in the oleate flotation system was investigated. Starch can depress hematite effectively in a wide pH range, but cannot depress siderite efficiently in neutral conditions. The flotation recovery of pure hematite, siderite, and quartz in the oleate-starch-CaCl2 system is significantly different when the slurry pH varies from 4 to 12. A novel two-step flotation process was developed for the separation of iron concentrate from Donganshan carbonaceous iron ore through which the siderite concentrate is first recovered and the high quality hematite concentrates with relative high iron recovery can be obtained in the second step flotation. The siderite concentrate may be utilized directly or undergo further concentration steps to increase iron grade.

 

Key words: iron ores; siderite; hematite; reverse anionic flotation; recovery

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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