A kind of separation method of weak magnetic gangue mineral titanium ore
A titanium medium ore and magnetic vein technology, applied in the field of separation of titanium medium ore containing weak magnetic gangue minerals, can solve the problems of low titanium recovery rate, ilmenite oxidation degree and difficult control of oxidation process parameters, etc., to achieve improved The effect of using value, low cost, and simple sorting method
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Embodiment 1
[0079] Put 2.0Kg of sample 1# high-chromium titanium medium ore in Table 2 and 0.35Kg of reducing agent coal in a rotary kiln, reduce it at 1050 ° C for 3 hours, and rapidly cool it to reduce high-chromium titanium medium ore, and its metallization rate is 90.46 %, the X-ray diffraction (XRD) of the reduced high-chromium titanite is as follows figure 2 shown. Dry magnetic separation of reduced high-chromium titanium medium ore at 3000GS intensity to obtain metal iron-containing reduced ilmenite material and magnetic separation tailings; the tailings are washed and separated to remove impurities and then dried to obtain chromite. The X-ray diffraction (XRD) of the reduced titanium-iron material containing metallic iron is as follows image 3 As shown, the reduced ferrotitanium material containing metallic iron contains Cr 2 O 3 is 0.098%, and the titanium recovery rate is 99.18% (titanium recovery rate = TiO in the reduced titanium iron material 2 Mass / (TiO2 in reduced tit...
Embodiment 2
[0081] The 2.0Kg sample 1# high-chromium titanium medium ore in Table 2 was first placed in a rotary kiln, and oxidized at 750°C for 1h in an air atmosphere. After cooling, add 0.35Kg of reducing agent coal, reduce at 1000 ℃ for 1 hour, and obtain high-chromium titanium ore after rapid cooling, and its metallization rate is 89.25%. Dry magnetic separation of reduced high-chromium titanium ore at 2000GS intensity to obtain reduced ilmenite material containing metallic iron and magnetic separation tailings; the tailings are washed and separated to remove impurities and then dried to obtain chromite. The reduced iron titanium material containing metallic iron contains Cr 2 O 3 It is 0.088%, the recovery rate of titanium is 98.89%, and the recovery rate of chromium can reach 98.06%.
Embodiment 3
[0083] Put 1.0Kg of sample 1# high chromium titanium medium ore in Table 2 in a fluidized bed, using hydrogen as a reducing agent, and the fluidized bed exhaust contains 3.5% H 2 , at 950 ℃, reducing for 2h, after rapid cooling, the high-chromium titanium ore is reduced, and its metallization rate is 32.42%. Perform dry magnetic separation on the reduced high-chromium titanium ore at 2500GS intensity to obtain ilmenite material containing metallic iron and magnetic separation tailings; the tailings are washed and separated to remove impurities and then dried to obtain chromite. The reduced iron titanium material containing metallic iron contains Cr 2 O 3 It is 0.057%, the recovery rate of titanium is 98.03%, and the recovery rate of chromium can reach 98.48%.
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