Mineral processing process for oolitic hematite
A technology of oolitic hematite and technology, which is applied in the direction of magnetic separation, solid separation, chemical instruments and methods, etc., can solve the problems that waste water cannot be recycled, low waste water recycling rate, long sorting process, etc., and achieve magnetization The effect is good, the cost of grinding and separation is reduced, and the recovery rate is ensured
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[0011] Example 1, such as figure 1 As shown, this embodiment includes the following steps: (1) The raw ore is crushed into a particle size of less than 5 mm in a crusher, and the crushed ore is roasted in a gas rotary kiln for 1 hour at a roasting temperature of 500°C. (2) Grind the roasted ore to a particle size of less than 0.074mm, which accounts for 34%, and then use a wet magnetic separator for weak magnetic separation to magnetically separate coarse iron concentrate 1 and tailings 1. Further preferably, the weak magnetic field strength of the wet magnetic separator is 120 kA / m. (3) The magnetically separated iron coarse concentrate 1 enters the vibrating screen for screening and sorting. The screen aperture of the vibrating screen is 0.7mm; the product on the vibrating screen is qualified iron concentrate 1, and the intermediate product below the vibrating screen Enter the first magnetic separation column selection, the washing water speed of the magnetic separation colu...
Example Embodiment
[0012] Example 2, such as figure 1 As shown, this embodiment includes the following steps: (1) crushing the raw ore into a particle size of 5 mm or less in a crusher, and roasting the crushed ore in a gas rotary kiln for at least 1 hour at a roasting temperature of 530°C. (2) Grind the roasted ore to a particle size of less than 0.074mm, which accounts for 34%, and then use a wet magnetic separator for weak magnetic separation to magnetically separate coarse iron concentrate 1 and tailings 1. Further preferably, the weak magnetic field strength of the wet magnetic separator is 120 kA / m. (3) The magnetically separated iron coarse concentrate 1 enters the vibrating screen for sieving and sorting. The aperture of the vibrating screen is 0.8mm; the product on the vibrating screen is qualified iron concentrate 1, and the intermediate product under the vibrating screen Enter the first magnetic separation column selection, the washing water speed of the magnetic separation column is ...
Example Embodiment
[0013] Example 3, such as figure 1 As shown, this embodiment includes the following steps: (1) Crush the raw ore into a particle size of less than 5 mm in a crusher, and roast the crushed ore in a gas rotary kiln for at least 1 hour at a roasting temperature of 550°C. (2) Grind the roasted ore to a particle size of less than 0.074mm, which accounts for 34%, and then use a wet magnetic separator for weak magnetic separation to magnetically separate coarse iron concentrate 1 and tailings 1. The weak magnetic field strength of the wet magnetic separator is 120kA / m. (3) The magnetically separated iron coarse concentrate 1 enters the vibrating screen for sieving. The screen aperture of the vibrating screen is 1mm; the product on the vibrating screen is qualified iron concentrate 1, and the intermediate product under the vibrating screen enters the first magnetic The column selection, the washing water speed of the magnetic separation column is 80ml / s. (4) The coarse iron concentra...
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