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Pre-concentration method of low-grade vanadium titano-magnetite

A vanadium titanomagnetite, low-grade technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of high energy consumption and large ore processing capacity, and achieve low energy consumption and enrichment ratio. High, low cost effect

Inactive Publication Date: 2018-07-27
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if this method is used to process low-grade ores, there will be problems of large ore processing capacity and high energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A pre-enrichment method for low-grade vanadium-titanium magnetite.

[0023] The low-grade vanadium-titanium magnetite raw ore that present embodiment adopts is: V 2 o 5 The grade is 0.03~0.11wt%; TiO 2 The grade is 1.50~2.70wt%; the grade of TFe is 8.00~12.00wt%.

[0024] The steps of the pre-enrichment method described in this embodiment are:

[0025] (1) First crush the raw ore of low-grade vanadium-titanium-magnetite to a particle size of ≤3mm, and then conduct a stage of strong magnetic separation under the condition of a magnetic field strength of 0.8~1.2T to obtain a stage of strong magnetic separation concentrate and tailings.

[0026] (2) Grinding the first stage of high-strength magnetic separation concentrate until the particle size is less than 0.074mm, accounting for 60~70wt%, to obtain the grinding product; and then subjecting the grinding product to a stage of Weak magnetic separation to obtain weak magnetic separation concentrate and weak magnetic sep...

Embodiment 2

[0031] A pre-enrichment method for low-grade vanadium-titanium magnetite.

[0032] The low-grade vanadium-titanium magnetite raw ore that present embodiment adopts is: V 2 o 5 The grade is 0.08~0.16wt%; TiO 2 The grade is 2.40~3.60wt%; the grade of TFe is 11.00~15.00wt%.

[0033] The steps of the pre-enrichment method described in this embodiment are:

[0034] (1) First crush the raw ore of low-grade vanadium-titanium-magnetite to a particle size of ≤3mm, and then conduct a stage of strong magnetic separation under the condition of a magnetic field strength of 0.7~1.0T to obtain a stage of strong magnetic separation concentrate and tailings.

[0035] (2) Grinding the first stage of high-strength magnetic separation concentrate until the particle size is less than 0.074mm, accounting for 50~60wt%, to obtain the grinding product; and then subjecting the said grinding product to a stage of Weak magnetic separation to obtain weak magnetic separation concentrate and weak magnet...

Embodiment 3

[0040] A pre-enrichment method for low-grade vanadium-titanium magnetite.

[0041] The low-grade vanadium-titanium magnetite raw ore that present embodiment adopts is: V 2 o 5 The grade is 0.12~0.20wt%; TiO 2 The grade is 3.30~4.50wt%; the grade of TFe is 14.00~18.00wt%.

[0042] The steps of the pre-enrichment method described in this embodiment are:

[0043] (1) First crush the raw ore of low-grade vanadium-titanium-magnetite to a particle size of ≤3mm, and then perform a stage of high-strength magnetic separation under the condition of a magnetic field strength of 0.6~0.9T to obtain a stage of high-grade magnetic separation concentrate and tailings.

[0044] (2) Grinding the first stage of high-strength magnetic separation concentrate until the particle size is less than 0.074mm, accounting for 70~80wt%, to obtain the grinding product; and then subjecting the grinding product to a stage of Weak magnetic separation to obtain weak magnetic separation concentrate and weak ...

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Abstract

The invention relates to a pre-concentration method of low-grade vanadium titano-magnetite. According to the technical scheme, raw ore of the low-grade vanadium titano-magnetite is broken till the particle size is not larger than 3mm, first-stage high intensity magnetic separation is carried out under the condition of magnetic field intensity being 0.6-1.2T, and first-stage high intensity magnetic-separation concentrate and tailings are obtained; the first-stage high intensity magnetic-separation concentrate is then ground till powders with the particle size being less than 0.074mm account for50-80 wt%, and ore grinding products are obtained; the ore grinding products are subjected to first-stage low intensity magnetic separation under the condition of the magnetic field intensity being 0.08-0.20T, and low intensity magnetic-separation concentrate and low intensity magnetic-separation tailings are obtained; the low intensity magnetic-separation tailings are subjected to separation ina chute, and gravity concentrate and tailings are obtained; and the gravity concentrate is subjected to second-stage high intensity magnetic separation under the condition of the magnetic field intensity being 0.4-0.8T, and second-stage high intensity magnetic-separation concentrate and tailings are obtained. The pre-concentration method of the low-grade vanadium titano-magnetite has the characteristics of being outstanding in ore processing capacity reduction, high in concentration ratio and low in cost.

Description

technical field [0001] The invention belongs to the field of beneficiation technology of vanadium-titanium magnetite. In particular, it relates to a pre-enrichment method of low-grade vanadium-titanium magnetite. Background technique [0002] Vanadium-titanium magnetite is a polymetallic symbiotic ore containing vanadium, titanium and iron, which has high comprehensive utilization value. my country is rich in reserves of vanadium-titanium magnetite. In addition to being mainly distributed in Panxi and Chengde regions, there are a large number of low-grade vanadium-titanium magnetite in Chaoyang region of my country. The prospective reserves are more than 20 billion tons and are currently under development. When the grades of vanadium, titanium and iron in the vanadium-titanium magnetite raw ore are low, the ore dressing process will face the problems of large ore processing capacity, high grinding energy consumption and high production cost, so the economical and efficient ...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B9/00
CPCB03B7/00B03B9/00
Inventor 张一敏许承宝刘涛黄晶
Owner WUHAN UNIV OF SCI & TECH
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