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Ore dressing method of vanadium titanium magnetite

A technology of vanadium-titanium magnetite and ore dressing method, which is applied in the field of physical method ore dressing, can solve the problems of high cost and complicated process, and achieve the effect of reducing the cost of magnetic separation

Active Publication Date: 2011-10-26
PANZHIHUA LIYU MINING
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Problems solved by technology

[0005] It can be seen that in the prior art, the beneficiation process for selecting furnace iron ore from natural vanadium-titanium magnetite must first grind the ore to -200 mesh (0.074mm), followed by two to three over-grinding and classification, and then use Magnetic separator sorting or cyclone sorting, the process is complicated and the cost is high

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Embodiment

[0023] Take TFe as 24.54%, TiO 2 100 kg of vanadium-titanium magnetite with a content of 9.5%, the ore is crushed and screened, and the final crushed ore particle size is ≤15mm; the crushed ore enters a ball mill and is finely ground to a particle size of ≤3mm, using a magnetic separator with a field strength of 4000Oe Carry out magnetic separation to obtain 85.28 kg of coarse concentrate and tailings; after magnetic separation, the coarse concentrate is ball-milled to -80 mesh, magnetically separated by a magnetic separator with a field strength of 1200Oe, and then separated by a magnetic separator of 1000Oe ; Finally, 34.5 kg of iron ore concentrate with a TFe of 59.25% is obtained; the tailings enter the next step of titanium beneficiation and utilization.

[0024] Adopt ore dressing method of the present invention, select field strength 3000-5000Oe for use in a step, select field strength 1000-1500Oe for use in b step, select field strength 800-1000Oe for use in c step; Ca...

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Abstract

The invention discloses an ore dressing method of a vanadium titanium magnetite and belongs to the field of magnetic separation of vanadium titanium magnetite. The invention provides an ore dressing method of a vanadium titanium magnetite. The method has low costs and simple operations, and comprises the following processing steps of: a. crushing and screening vanadium titanium magnetic iron ore,carrying out fine grinding to have a granularity no more than 3mm, then carrying out magnetic separation under a field intensity of 3000-5000 Oe to obtain a rough concentrate and a mine tailing; b. grinding the rough concentrate to 80 mesh and carrying out magnetic separation by a magnet separator with a field intensity of 1000-1500 Oe; c. then carrying out magnetic separation by a magnet separator with a field intensity of 800-1000 Oe to obtain a qualified iron ore concentrate and a mine tailing. According to the invention, after coarse grain tailings discarding, low-grade raw ore vanadium titanium magnetite, which needs no repeated grinding, can reach concentrate grade with TFe equal to 59% and recovery rate reaching about 80%. In the technology, repeated grinding and grading are not needed after coarse grain tailings discarding, therefore magnetic separation costs are lowered substantially.

Description

technical field [0001] The invention relates to a physical separation method, which belongs to the field of magnetic separation of vanadium-titanium magnetite. Background technique [0002] The reserves of vanadium-titanium magnetite are very rich in the world, and the reserves in my country are among the best. The reserves in Panxi area of ​​Sichuan and Chengde area of ​​Hebei reach 10 billion tons. Vanadium-titanium magnetite is a multi-element symbiotic ore, and its composition varies with the place of origin. Generally speaking, the ore mainly contains 30-34wt% iron (existing in the form of iron oxide in the ore). V 2 o 5 0.3-1wt%, TiO 2 8-14wt%; the mined ore is crushed and beneficiated to obtain iron (vanadium) concentrate, which is used as raw material for smelting iron and steel; the tailings of iron beneficiation are used to recycle ilmenite concentrate as raw material for extracting titanium products. [0003] At present, the beneficiation process for extractin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/00
Inventor 何德武汪云华
Owner PANZHIHUA LIYU MINING
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