Method of using vanadium-titanium magnetite concentrate to produce middle-grade titanium slag

A technology for titanomagnetite and concentrate is applied in the field of comprehensive utilization of combined resources in beneficiation and smelting, which can solve problems such as ineffective utilization of titanium resources, and achieve the effects of high grinding cost, efficient separation and cost reduction.

Active Publication Date: 2017-03-15
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that Panzhihua vanadium-titanium-magnetite titanium resources cannot be effectively utilized so far, the present invention provides a method for producing medium-grade titanium slag with vanadium-titanium-magnetite concentrate

Method used

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  • Method of using vanadium-titanium magnetite concentrate to produce middle-grade titanium slag
  • Method of using vanadium-titanium magnetite concentrate to produce middle-grade titanium slag
  • Method of using vanadium-titanium magnetite concentrate to produce middle-grade titanium slag

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Experimental program
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Effect test

Embodiment 1

[0024] (1) High-purification preparation of titanium-magnetite concentrate: Grinding the titanium-magnetite blast furnace concentrate with a particle size percentage of -74 μm greater than 80% and an iron grade of 54.5%~55.5% to a particle size percentage of -45 μm 85%~90%, using a magnetic separator with a magnetic field strength of 90KA / m to obtain a concentrate, and then using a magnetic separator with a magnetic field strength of 80KA / m / m to obtain iron grades of TFe 57%~58%, TiO 2 The grade is 14%~14.3% high-grade titanium magnetite concentrate. The magnetic separation tailings are combined for a beneficiation, the tailings are discarded, and the beneficiation concentrate becomes a common iron concentrate containing 52.5% to 53% iron, which is used as a raw material for blast furnace ironmaking.

[0025] (2) Direct reduction without flux: the high-grade titano-magnetite concentrate prepared by high-purification in step (1) is pelletized with 1% by mass of water-soluble o...

Embodiment 2

[0030] (1) High-purification preparation of titanium-magnetite concentrate: Grinding the titanium-magnetite blast furnace concentrate with a particle size percentage of -74 μm greater than 80% and an iron grade of 55.0%~56.0% to a particle size percentage of -45 μm 90%~95%, using a magnetic separator with a magnetic field strength of 80KA / m to obtain a concentrate, and then using a magnetic separator with a magnetic field strength of 70KA / m to obtain iron grades of TFe 58%~59%, TiO 2 The grade is 14.3%~14.8% high-grade titano-magnetite concentrate. The magnetic separation tailings are combined for a beneficiation, the tailings are discarded, and the beneficiation concentrate becomes a common iron concentrate containing 52% to 52.5% iron, which is used as a raw material for blast furnace ironmaking.

[0031] (2) Direct reduction without flux: the high-grade titano-magnetite concentrate prepared by high-purification in step (1) is pelletized with 0.8% by mass of water-soluble o...

Embodiment 3

[0036] (1) High-purification preparation of titano-magnetite concentrate: Grinding the blast furnace concentrate of titano-magnetite with a particle fraction percentage of -74 μm greater than 80% and an iron grade of 55.5%~56.5% to a fraction percentage of -45 μm 90%~95%, using a magnetic separator with a magnetic field strength of 70KA / m / m to obtain a concentrate, and then using a magnetic separator with a magnetic field strength of 60KA / m to obtain iron grades of TFe 59%~60%, TiO 2 The grade is 14.5%~15% high-grade titanium magnetite concentrate. The magnetic separation tailings are combined for a beneficiation, the tailings are discarded, and the beneficiation concentrate becomes a common iron concentrate containing 52.5% to 53% iron, which is used as a raw material for blast furnace ironmaking.

[0037] (2) Direct reduction without flux: the high-grade titano-magnetite concentrate prepared by high-purification in step (1) is pelletized with 0.6% by mass of water-soluble o...

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Abstract

The invention relates to a method of using vanadium-titanium magnetite concentrate to produce middle-grade titanium slag, belongs to the field of combined concentration and smelting process comprehensive resource utilization, and aims to solve the problem that the titanium resources of Panzhihua vanadium-titanium magnetite ore cannot be effectively utilized so far. The method includes that the vanadium-titanium magnetite concentrate is used as the raw material, high-purity preparation is used to remove impurities such as calcium, aluminum and silicon, direct reduction without flux is performed, half-melting iron slag phase splitting is performed, coarse grinding and sieving is performed on iron slag, fine grinding and magnetic separating are performed to obtain direct reduction iron, magnetic-separating concentrate is returned to continue reduction, and a separation-metallurgy-separation closed loop flow is formed to obtain the middle-grade titanium slag with the grade of titanium dioxide being larger than 60%. The method has the advantages that the technical requirements of titanium resource recycling using sulfate process titanium dioxide and other methods are satisfied, the titanium resources, which is hard to utilize currently, the vanadium-titanium magnetite concentrate can be recycled efficiently, and the comprehensive utilization rate of the titanium resources of the Panzhihua area is increased.

Description

technical field [0001] The invention relates to a method for producing medium-grade titanium slag by using vanadium-titanium-magnetite concentrate, which belongs to the field of comprehensive utilization of combined resources of dressing and smelting. Background technique [0002] Vanadium titanomagnetite and ilmenite are the main raw materials for extracting iron and titanium. The Panxi area is the second largest iron ore area in my country, which contains tens of billions of tons of vanadium-titanium magnetite resources, of which titanium resource reserves account for more than 90% of my country's titanium resource reserves, and the comprehensive utilization value is extremely high. TiO in ore 2 It mainly occurs in titanomagnetite and granular ilmenite, titanomagnetite is a kind of composite mineral with magnetite as the base, microcrystalline and lamellar ilmenite minerals embedded in it; granular ilmenite Most of the impurity components of calcium and magnesium exist i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/02C22B1/244C22B34/12B03C1/00
CPCB03C1/00C21B13/006C21B13/02C22B1/2406C22B1/244C22B34/1209Y02P10/20
Inventor 文书明吕超邓久帅柏少军丁跃华谢美芳刘建丰奇成
Owner KUNMING UNIV OF SCI & TECH
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