Beneficiation of hematite iron ore

Also known as red hematite ore of its chemical formula is Fe2O3, which is a weakly magnetic iron minerals, magnetite floatability than good, one of the main raw material is iron. The main mineral processing technology have re-election, and strong magnetic separation or flotation process and use a variety of mineral, and there have been post-low intensity magnetic separation magnetic roasting process. Early hematite mineral processing generally use more re-election process, mainly jig, centrifugal concentrator, spiral chute, spiral concentrator, shaking and other mineral processing capacity because of their small, beneficiation of low grade, low recovery rate gradually Later, the development of red iron ore out of the flotation process and the high intensity magnetic separation process mainly paraffin oxide soap is for the collector of the flotation process and to electromagnetic annulus Intensity Magnetic Separator for sorting equipment, high intensity magnetic separation process. But the sorting specifications have not reached a satisfactory result. In recent years, the mineral hematite has achieved rapid development, the main mineral processing technology are: electromagnetic pulsating high gradient magnetic separator is represented by strong magnetic beneficiation process and represented by series of anti-flotation beneficiation process. Especially the use of magnetic – flotation process to make some of mine co-hematite sorting reached grade of iron concentrate and iron ore recovery satisfaction index.

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