Method of preparing synthetic rutile from ore type ilmenite concentrate
A technology of artificial rutile and ilmenite concentrate, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of difficult reduction technology, existing rotary kiln ring formation, long corrosion time, etc., to eliminate hidden dangers of ring formation, The effect of ensuring quality and reducing the reduction temperature
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[0016] 1: Rock ore type ilmenite concentrate (TiO 2 47.16%, TFe31.47%) with additive pelletizing. The additive sodium humate is added in an amount of 1.5%. After the raw balls are dried and preheated by the grate machine, they enter the rotary kiln for reduction. The drying and preheating system of the chain grate machine is as follows: the material height is 200mm, the air temperature in the blast drying section is 200°C, the wind speed is 1.0m / s, and the time is 2min. The air temperature in the section is 250°C, the wind speed is 1.0m / s, and the time is 5min. The air temperature in the preheating section is 800-950°C, the wind speed is 1.2m / s, and the time is 12min; , the reduction time is 150min, the C / Fe ratio is 0.8, and the metallization rate of the obtained reduced ilmenite is 93.78%. The reduced ilmenite ore is crushed and ground, and the grinding particle size is controlled at -1mm to account for 100%, and then the rust separation treatment is carried out. The rust...
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Application Information
- IPC
- C01G23/047
- Inventors
- 邱冠周; 姜涛