Sodium-translated roasting method of vanadium minerals
A technology for sodium roasting and minerals, applied in the field of metallurgy, can solve the problems of uneven production, difficult operation and high production cost, and achieve the effects of reduced production cost, broad application prospects and convenient operation.
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Embodiment 1
[0015] Embodiment 1 adopts the method of the present invention to roast vanadium mineral
[0016] The vanadium slag is crushed and ball milled, and the passing rate of 120 meshes reaches 92%, and metallic iron is magnetically separated. The content of metallic iron in the refined vanadium slag is 1.78%, and 100 tons of complete refined slag (TV content: 8.56%), soda ash and The total weight of sodium chloride is formulated according to 10 tons, of which sodium chloride accounts for 3.0 tons; mix evenly in the mixer. Under aerobic conditions, the whole fine slag is put into the rotary kiln for high-temperature roasting, the roasting temperature is 750°C, and the roasting time is controlled at 4.5h; the oxygen content in the tail gas of the rotary kiln is detected to reach 12.5%.
[0017] The conversion rate of vanadium in this embodiment is 87.13%, and the rotary kiln does not have balls or rings during the roasting process.
Embodiment 2
[0018] Embodiment 2 adopts the method of the present invention to roast vanadium mineral
[0019] The vanadium slag is crushed and ball milled, and the passing rate of passing through 120 mesh reaches 86%, and the metallic iron is magnetically separated. The content of metallic iron in the refined vanadium slag is 1.69%, and the whole refined slag (TV content: 8.49%) is obtained, and the tailing slag is full of vanadium The content is 1.12%, and 40 tons of fine slag is mixed with 10 tons of tailings to ensure that the total vanadium after mixing is 7.0%; the total weight of soda ash and sodium chloride is 5.0 tons, of which sodium chloride accounts for 1.0 tons. Mix well in a blender. Under aerobic conditions, it will be roasted in a rotary kiln at a high temperature at 800°C, and the roasting time will be controlled at 4.0 hours; the oxygen content in the tail gas of the rotary kiln is detected to reach 11%.
[0020] The conversion rate of vanadium in this embodiment is 90.7...
Embodiment 3
[0021] Embodiment 3 adopts the method of the present invention to roast vanadium mineral
[0022] The vanadium slag is crushed and ball milled, and the passing rate of passing through 120 meshes reaches 87%. Metal iron is magnetically separated. The content of metal iron in the refined vanadium slag is 1.34%, and the whole refined slag (TV content: 8.64%) is obtained, and the tailing slag is full of vanadium The content is 1.12%, and 35 tons of fine slag is mixed with 15 tons of tailings to ensure that the total vanadium after mixing is 6.38%; the total weight of soda ash and sodium chloride is 5.0 tons, of which sodium chloride accounts for 1.5 tons. Mix well in a blender. Under aerobic conditions, it will be roasted in a rotary kiln at a high temperature at 900°C, and the roasting time will be controlled at 3.5 hours; the oxygen content in the tail gas of the rotary kiln will reach 12.5%.
[0023] The conversion rate of vanadium in this embodiment is 87.59%, and the rotary ...
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