In the early hematite beneficiation, jig, centrifugal separator, spiral chute, spiral washing machine and vibrating table can all be used. Later flotation has been used for hematite upgrading, including flotation machine and magnetic separation. machine. However, these single separation methods do not help to achieve the desired beneficiation efficiency. In recent decades, magnetic separation has been combined with re-selection, and magnetic separation has been combined with re-selection. Flotation separation, using gravity separation and flotation separation to obtain high-grade hematite iron ore concentrate.
Hematite is the main mineral form of iron oxide and the main ore mineral of iron. Hematite and magnetite coexist and can be converted into hematite through oxidation, leaving the form of hematite to form the illusion of hematite. The hematite separation process is suitable for hematite and impurities with uneven particle size distribution, ores with large fine-grained content, ores with a small amount of magnetite, and hematite with complex structures such as gangue minerals containing quartz or kaolin. Coarse and fine particle separation, heavy-magnetic-anion reverse flotation process.
The whole process of hematite beneficiation
1. Hematite crushing: There are also three steps in this stage, hematite may go through primary crushing, secondary crushing and fine crushing. Hematite coarse crushing equipment includes gyratory crusher, jaw crusher, hammer crusher, etc. Hematite medium and fine crushing equipment mainly includes cone crusher, ball mill, vertical mill, ultrafine mill, etc.
2. The main operation steps of the whole beneficiation process of hematite include sorting, gravity separation, flotation, magnetic separation, electrostatic beneficiation, chemical beneficiation, etc. There are many equipments involved in the hematite beneficiation process, such as flotation equipment, magnetic separators, electrostatic concentrators and so on.
3. The treatment of refined hematite includes dehydration, tailings treatment, backwater, etc. Concentrator and dryer are important equipment in this stage.
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