Method for reinforcing titanium concentrate pellet prereduction

[0040] Take by weighing 10Kg of titanium concentrate of Table 1 composition, 0.3Kg of the mixture of sodium bentonite and sodium carboxymethyl cellulose (mass ratio is 1:2), 0.4Kg of water, 2Kg of carbonized coal, and press on a roller skin briquetting machine to form The speed of the ball and roller skin briquetting machine is 6r / min, and the pressure is 16MPa. After the pressed pellets are dried, the strength of the pellets is above 1000N. Select 20 pellets of this kind and place them in a resistance furnace to oxidize for 10 minutes at a temperature of 1050°C. Coat the surface of the oxidized pellets with a layer of anthracite coal powder at 1300°C. ℃ for 30 minutes, and the reduced pellets were cooled in the furnace.

[0041] The reduction rate of pellets in this embodiment can reach about 90%.

[0043] Take by weighing 10Kg of titanium concentrate of Table 1 composition, 0.3Kg of the mixture of sodium bentonite and sodium carboxymethyl cellulose (mass ratio is 1:2), 0.4Kg of water, 2Kg of carbonized coal, and press on a roller skin briquetting machine to form The speed of the ball and roller skin briquetting machine is 6r / min, and the pressure is 16MPa. After the pressed pellets are dried, the strength of the pellets is above 1000N. Select 20 pellets of this kind and place them in a resistance furnace to oxidize for 10 minutes at a temperature of 1000°C. Coat the surface of the oxidized pellets with a layer of anthracite coal powder at 1250°C. ℃ for 25 minutes, and the reduced pellets were cooled in the furnace.

[0044] The reduction rate of pellets in this embodiment can reach about 85%.

[0045] The method provided by the invention can change the phase of the titanium concentrate, effectively improve the subsequent pre-reduction metallization rate, and the pre-red...