Statistical analysis and concentration of iron ore using Longi LGS 500 WHIMS  

作　　者：Makhula M.J. Falcon R.M.S. Bergmann C.P. Bada S.O. 

机构地区：[1]Department of Mineral Processing Division, Mintek, Johannesburg 2125, South Africa [2]School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg 2050, South Africa

出　　处：《International Journal of Mining Science and Technology》2016年第5期769-775,共7页矿业科学技术学报（英文版）

基　　金：NRF SARCh I Clean Coal Technology, Mintek – South Africa and the University of the Witwatersrand for making funds available for the research study

摘　　要：A Longi LGS 500 wet high intensity magnetic separator(WHIMS) was used to concentrate a fine, low grade South African hematite ore. The ore was prepared into different size fractions and was subjected to changes in pulp density, magnetic field intensity and pulsation frequency which followed a 33 full factorial matrix. The concentrate mass yield and Fe grade were selected as the dependent responses to the changes. The analysis of variance(ANOVA) shows that the variables investigated are significant to the material's response to magnetic separation. This significance was in the order of magnetic field intensity followed by pulsation frequency and then pulp density. It was also noted that a single stage magnetic separation has a potential to upgrade a feed( 75 lm and 40% Fe) to a 55% Fe grade, as the pulsation frequency increases. In addition, the model predictions and actual data were in good agreement, reporting regression coefficients within acceptable ranges.A Longi LGS 500 wet high intensity magnetic separator（WHIMS） was used to concentrate a fine, low grade South African hematite ore. The ore was prepared into different size fractions and was subjected to changes in pulp density, magnetic field intensity and pulsation frequency which followed a 33 full factorial matrix. The concentrate mass yield and Fe grade were selected as the dependent responses to the changes. The analysis of variance（ANOVA） shows that the variables investigated are significant to the material＇s response to magnetic separation. This significance was in the order of magnetic field intensity followed by pulsation frequency and then pulp density. It was also noted that a single stage magnetic separation has a potential to upgrade a feed（ 75 lm and 40% Fe） to a 55% Fe grade, as the pulsation frequency increases. In addition, the model predictions and actual data were in good agreement, reporting regression coefficients within acceptable ranges.

关 键 词：Magnetic separation Longi LGS 500 HEMATITE ANOVA 

分 类 号：TD951[矿业工程—选矿]