Semi-industrial experimental study on bauxite separation using a cell?column integration process
来源期刊：International Journal of Minerals Metallurgy and Materials2016年第1期
论文作者：Ning-ning Zhang Chang-chun Zhou Long-fei Cong Wen-long Cao You Zhou
文章页码：7 - 15
摘 要：The cyclonic-static micro-bubble flotation column（FCSMC） is a highly efficient mineral processing equipment. In this study, a cell-column（FCSMC） integration process was investigated for the separation of bauxite and its feasibility was analyzed on a theoretical basis. The properties of low-grade bauxite ore from Henan Province, China were analyzed. Parameters such as reagent dosage, scraping bubble time, and pressure of the circulating pump during the sorting process were investigated and optimized to improve the flotation efficiency. On the basis of these parameters, continuous separation experiments were conducted. Bauxite concentrate with an aluminum-to-silicon（A/S） mass ratio of 6.37 and a 77.63wt% recovery rate were achieved via a flow sheet consisting of "fast flotation using a flotation cell, one roughing flotation and one cleaning flotation using flotation columns". Compared with the full-flotation-cells process, the cell?column integration process resulted in an increase of the A/S ratio by 0.41 and the recovery rate by 17.58wt%. Cell?column integration separation technology represents a new approach for the separation of middle-to-low-grade bauxite ore.
Ning-ning Zhang1,2，Chang-chun Zhou1,2，Long-fei Cong1,2，Wen-long Cao1,2，You Zhou1,2
1. School of Chemical Engineering and Technology, China University of Mining & Technology2. Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education)
摘 要：The cyclonic-static micro-bubble flotation column（FCSMC） is a highly efficient mineral processing equipment. In this study, a cell-column（FCSMC） integration process was investigated for the separation of bauxite and its feasibility was analyzed on a theoretical basis. The properties of low-grade bauxite ore from Henan Province, China were analyzed. Parameters such as reagent dosage, scraping bubble time, and pressure of the circulating pump during the sorting process were investigated and optimized to improve the flotation efficiency. On the basis of these parameters, continuous separation experiments were conducted. Bauxite concentrate with an aluminum-to-silicon（A/S） mass ratio of 6.37 and a 77.63wt% recovery rate were achieved via a flow sheet consisting of "fast flotation using a flotation cell, one roughing flotation and one cleaning flotation using flotation columns". Compared with the full-flotation-cells process, the cell?column integration process resulted in an increase of the A/S ratio by 0.41 and the recovery rate by 17.58wt%. Cell?column integration separation technology represents a new approach for the separation of middle-to-low-grade bauxite ore.
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