A method for pretreating high-titanium vanadium-titanium magnetite to prepare pellets
A kind of technology of vanadium titanomagnetite and high titanium type
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Embodiment 1
[0045] A method for preparing pretreated high-titanium type vanadium-titanium magnetite pellets, the method comprising:
[0046] 1. Pretreatment
[0047] Take high-titanium vanadium-titanium magnetite and finely grind high-titanium vanadium-titanium magnetite in conical ball mill, horizontal ball mill or dry slag ball mill and other grinding equipment to obtain high-titanium vanadium-titanium magnet Mineral powder. Among them, the parameters of the conical ball mill are: the grinding capacity is 4kg, the rotating speed is 90r / min, the grinding concentration is 65% to 75%, the ball loading capacity is 10kg, and the ball milling time is 1 to 60min; the parameters of the horizontal ball mill are: The ore quantity is 2-5kg, the speed is 35-55r / min, the ball milling time is 1-60min, and the ball loading capacity is 25kg; the parameters of the dry-type mineral powder ball mill are: the grinding quantity is 2-5kg, the speed is 30-45r / min, The ball milling time is 1-60min, and the b...
Embodiment 2
[0072] A method for pretreating high-titanium vanadium-titanium magnetite to prepare pellets, the present embodiment is based on embodiment 1, and the specific operation steps are as follows:
[0073] 1. Pretreatment
[0074] Take 4kg of high-titanium vanadium-titanium magnetite in a conical ball mill with a rotating speed of 90r / min, a grinding concentration of 70%, a ball loading capacity of 10kg, and a ball milling time of 30min.
[0075] After grinding, the particle size distribution of the high-titanium vanadium-titanium magnetite was measured by wet sieving, and 92% of the particles had a particle size smaller than 75 μm.
[0076] 2. Raw material drying
[0077] The pretreated high-titanium vanadium-titanium magnetite was dried in a draft drying oven at a temperature of 108°C for 2 hours, and the moisture content of the dried high-titanium vanadium-titanium magnetite was measured to be 1.13%.
[0078] 3. Mixing stage
[0079] Add 0.6% of its weight of calcium-based be...
Embodiment 3
[0094] This embodiment is on the basis of embodiment 1, concrete operation is as follows:
[0095] 1. Pretreatment
[0096] Take 5 kg of high-titanium vanadium-titanium magnetite in a horizontal ball mill with a rotating speed of 40 r / min, a ball loading capacity of 25 kg, and a ball milling time of 25 min.
[0097] After grinding, the particle size distribution of the high-titanium vanadium-titanium magnetite was measured by wet sieving, and 86% of the particles had a particle size smaller than 75 μm.
[0098] 2. Raw material drying
[0099] The pre-grinded high-titanium vanadium-titanium magnetite and 0.7% by weight of hydrogen-based bentonite were dried in a draft drying oven at 105°C for 2.1 hours, and the water content of the iron ore was measured to be 1.15%.
[0100] 3. Mixing stage
[0101] Add hydrogen-based bentonite to high-titanium vanadium-titanium magnetite powder for 18 minutes of dry mixing. After the dry mixing is completed, use a high-pressure sprayer to e...
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Abstract
Description
Claims
Application Information
- IPC
- C22B1/24
- CPC
- C22B1/2406
- Inventors
- 薛向欣; 汤卫东