矿物冶金与材料学报
礦物冶金與材料學報
광물야금여재료학보
INTERNATIONAL JOURNAL OF MINERALS,METALLURGY AND MATERIALS
2014年
7期
637-646
,共10页
hematite%kaolinite%flocculation%artificial neural networks%back propagation algorithm%Fourier transform infrared spectroscopy%separation efficiency
Because of the current depletion of high grade reserves, beneficiation of low grade ore, tailings produced and tailings stored in tailing ponds is needed to fulfill the market demand. Selective flocculation is one alternative process that could be used for the beneficiation of ultra-fine material. This process has not been extensively used commercially because of its complex dependency on process parameters. In this paper, a selective flocculation process, using synthetic mixtures of hematite and kaolinite in different ratios, was attempted, and the ad-sorption mechanism was investigated by Fourier transform infrared (FTIR) spectroscopy. A three-layer artificial neural network (ANN) model (4?4?3) was used to predict the separation performance of the process in terms of grade, Fe recovery, and separation efficiency. The model values were in good agreement with experimental values.
