Vanadium titano-magnetite screening method

A technology of vanadium titanomagnetite and screening method, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve the problems of backward vanadium titanomagnetite technology, waste of environmental protection resources, collapse, landslide, etc. The effect of energy consumption, saving energy consumption and reducing the amount of grinding

Active Publication Date: 2014-04-23
MIYI YUANTONG FERROTITANIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Over time, these resources have not been effectively utilized, and instead have had a very bad impact on the operating environment in the mining area. During the rainy season, spontaneous combustion disasters often occur, resulting in collapses, landslides and other accidents
[0005] Due to technical and economic reasons, the current technology for processing low-grade vanadium-titanium magnetite (outside ore of vanadium-titanium magnetite) is backward, energy consumption is high, and problems of environmental protection and resource waste are more prominent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1 Magnetic pulley tail throwing test

[0045] Take vanadium-titanium-magnetite surface ore, optimize tailing method of the present invention, and the test results are shown in Table 1. Among them, the amount of ore feeding is 500 tons, and the main composition of the vanadium-titanium magnetite off-surface ore is: TFe total iron content is 12-20%, TiO 2 Content 4~6%, V 2 o 5 The content is 0.2~0.4%, SiO 2 The content is 30~36%, Al 2 o 3 The content of CaO is 13-16%, the content of CaO is 7-10%, the content of MgO is 8-10%, and the content of P 2 o 5 The S content is 0.06-0.09%, the S content is 0.2-0.4%, the Co content is 0.006-0.010%, the Ni content is 0.008-0.020%, and the Cu content is 0.010-0.030%.

[0046] Table 1 Results of magnetic pulley tail throwing test

[0047]

[0048] Continued Table 1

[0049]

[0050] It can be seen from Table 1 that when the particle size is ≤12mm, the magnetic induction intensity is 1300-1500Gs, and the conveying...

Embodiment 2

[0051] Embodiment 2 Grinding fineness test

[0052] Take vanadium-titanium-magnetite off-surface ore tailings concentrate, and optimize the grinding and magnetic separation parameters of the present invention. The test results are shown in Table 2. Among them, the tailing concentrate feed rate is 500 tons, and the particle size is ≤12mm. The main composition of the vanadium-titanium magnetite off-surface ore tailing concentrate is: TFe total iron content of 21-25%.

[0053] Table 2 Grinding fineness test results

[0054]

[0055] Continued Table 2

[0056]

[0057] It can be seen from Table 2 that when the first-stage grinding particle size -200 mesh content is 40-45%, and the second-stage grinding particle size-200 mesh content is 75-80%, when the magnetic induction intensity is 1800-2000Gs and 1300-1500Gs respectively, it can be obtained Iron concentrate with a TFe content of 55-57%.

Embodiment 3

[0058] Example 3 Using the vanadium-titanium magnetite screening method of the present invention to screen and obtain iron concentrate

[0059] Get vanadium-titanium-magnetite surface ore, adopt the inventive method to carry out ore dressing, wherein, vanadium-titanium-magnetite mainly consists of: TFe total iron content is 12.33%, TiO 2 Content 4.53%, V 2 o 5 The content is 0.23%, SiO 2 The content is 33.6%, Al 2 o 3 content of 14.9%, CaO content of 7.82%, MgO content of 8.98%, P 2 o 5 The content is 0.075%, the S content is 0.26%, the Co content is 0.008%, the Ni content is 0.009%, and the Cu content is 0.018%.

[0060] a. Throwing tail: pre-screen out the fine materials with a particle size of ≤12mm in the surface ore of vanadium-titanium magnetite, and then crush the coarse material with a particle size of >12mm to a particle size of ≤12mm, and enrich to obtain vanadium-titanium magnetite with a particle size of ≤12mm ;The vanadium-titanium magnetite belt magnetic p...

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Abstract

The invention relates to a vanadium titano-magnetite screening method and belongs to the field of ore screening. The technical problem to be solved in the invention is to provide a vanadium titano-magnetite screening method. The vanadium titano-magnetite screening method comprises the following steps: a, tail-escaping, namely performing tail-escaping on vanadium titano-magnetite with the granularity of less than or equal to 12mm so as to obtain tail-escaping concentrate; b, performing primary grinding and magnetic separation, namely grading the tail-escaping concentrate to prepare 40-45 percent ore pulp of which the granularity is -200 meshes, and performing magnetic separation to obtain primary concentrate; c, performing secondary grinding and magnetic separation, namely demagnetizing the primary concentrate obtained in the step b and performing secondary grinding, grading to prepare 75-80 percent ore pulp with the granularity of -200 meshes, and performing magnetic separation to obtain secondary concentrate; and d, performing third-stage magnetic separation, namely performing magnetic separation on the secondary concentrate obtained in the step c so as to obtain iron ore concentrate. According to the vanadium titano-magnetite screening method, the TFe content of iron ore concentrate obtained by utilizing low-grade vanadium titano-magnetite is 55-57 percent, the quality is stable, and the method has the advantages of low cost, environment friendliness and energy conservation.

Description

technical field [0001] The invention relates to a method for screening vanadium-titanium magnetite, belonging to the field of ore screening. Background technique [0002] my country's Panzhihua area is rich in vanadium and titanium resources. The vanadium-titanium magnetite reserves reach 10 billion tons, accounting for 20% of the country's iron ore reserves. The main large-scale mining areas include Panzhihua, Taihe, Baima, and Hongge. [0003] The vanadium-titanium magnetite in the Baima mining area of ​​Panzhihua, my country is a super-large hillside open-pit mine. During mining, about 10 million tons of abandoned ore are discharged every year, that is, the vanadium-titanium magnetite surface ore. Among them, the total iron content of TFe is 12-20%. TiO 2 Content 4~6%, V 2 o 5 The content is 0.2~0.4%, SiO 2 The content is 30~36%, Al 2 o 3 The content of CaO is 13-16%, the content of CaO is 7-10%, the content of MgO is 8-10%, and the content of P 2 o 5 The S content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B03C1/16
Inventor 林鹏吴小蓉
Owner MIYI YUANTONG FERROTITANIUM
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