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Minerals 2017, 7(1), 13; doi:10.3390/min7010013

Flotability Improvement of Ilmenite Using Attrition-Scrubbing as a Pretreatment Method

1
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
2
Design and Research Institute of Panzhihua Iron and Steel Group Mining Co., Ltd., Panzhihua 617000, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Massimiliano Zanin
Received: 17 November 2016 / Revised: 13 January 2017 / Accepted: 16 January 2017 / Published: 22 January 2017
(This article belongs to the Special Issue Flotation in Mineral Processing)
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Abstract

Flotation technology of the recovery and utilization of ilmenite from tailings of iron beneficiated in Panzhihua was investigated based on mineralogical study. The results of mineralogical study show that the main occurrence of the valuable mineral are liberated grains of ilmenite. Experimental results of flotation conditions show that attrition-scrubbing raw ores exhibit good flotability with higher recoveries and a slight decrease in grade compared to ores without attrition-scrubbing. Further, open-circuit experiments also prove the superiority of attrition-scrubbing raw ores. The results of closed-circuit experiments show that qualified ilmenite concentrate can be obtained and the yield, grade, and recovery are 22.26%, 47.06%, and 60.73%, respectively. Theoretical study and analysis show that there are two contributions to superior flotability for attrition-scrubbing samples. The first is that the attrition-scrubbing samples can uncover more ferrous ions on the newly-produced fresh ilmenite surface, resulting in the increase in active sites. The other is that in the process of attrition-scrubbing, the transformation of ferrous ions to ferric ions can be promoted. View Full-Text
Keywords: attrition-scrubbing; ilmenite; high and efficient recovery attrition-scrubbing; ilmenite; high and efficient recovery
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Zhai, J.; Chen, P.; Wang, H.; Hu, Y.; Sun, W. Flotability Improvement of Ilmenite Using Attrition-Scrubbing as a Pretreatment Method. Minerals 2017, 7, 13.

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