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Method for synthetically reclaiming iron, vanadium and titanium from vanadium titanium magnet concentrate

A technology for vanadium titanomagnetite concentrate and molten iron, which is applied in the field of comprehensive recovery of iron, vanadium and titanium from vanadium titanomagnetite concentrate, can solve the problems affecting the smooth progress of production, slow reduction speed of rotary kiln and low recovery rate, etc. The effect of not being able to effectively recycle, shorten the restoration time, and improve the restoration efficiency

Inactive Publication Date: 2008-04-30
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this process, the comprehensive recovery rates of vanadium and titanium are low, 58% and 74% respectively; the residue of vanadium extraction pellets produces a large amount of powder during the reduction process of the rotary kiln, resulting in serious ring formation in the rotary kiln, which affects the smooth production Carrying out; the reduction speed of the rotary kiln is slow and the cycle is long
[0007] At present, the technology for effectively separating and extracting vanadium and titanium from the slag containing vanadium and titanium is still immature, because the influence of vanadium on the whiteness of titanium is very obvious, when extracting titanium from the slag containing vanadium and titanium, Only low-grade enamel titanium dioxide was obtained
Therefore, vanadium and titanium cannot be economically and effectively extracted from vanadium-titanium magnetite concentrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Get 2kg of Panzhihua Baima vanadium-titanium magnetite concentrate (particle size: -200 mesh 67%; main component: V 2 o 5 0.769%, TFe58.66%, FeO27.08%, SiO 2 1.52%, TiO 2 11.09%, MgO 1.63%, MnO 0.432%, Al 2 o 3 3.43%), add 0.12kg of anhydrous sodium sulfate into it, mix well and make pellets, the size of the pellets is 8-10mm; the pellets are heated to 1250°C in the muffle furnace and kept for 60min, then cooled to 150 by the ring cooler Take it out at about ℃. After leaching the calcined pellets with 3L hot water, V in the residue 2 o 5 The content is 0.091%; the leachate is further processed into V 2 o 5 product. The vanadium recovery rate of the vanadium-titanium magnetite concentrate is 83.3%.

[0025] The above residue is crushed to 200 mesh, accounting for 70%. Take 1.8kg of the crushed residue, mix with 0.36kg of anthracite and 0.036kg of bentonite, and then make pellets. The diameter of the pellets is 10-12mm. After the pellets were dried, they we...

Embodiment 2

[0028] Get 2.5kg of Panzhihua Baima vanadium-titanium magnetite concentrate (particle size: -200 mesh 67%; main component: V 2 o 5 0.769%, TFe58.66%, FeO27.08%, SiO 2 1.52%, TiO 2 11.09%, MgO 1.63%, MnO 0.432%, Al 2 o 3 3.43%), add 0.175kg of anhydrous sodium sulfate to it, mix well and make pellets, the size of pellets is 8-12mm; the pellets are heated to 1250°C in the muffle furnace and then kept for 40min, then cooled to 150°C by ring cooler Take out left and right. After leaching the roasted pellets with 3L hot water, the residue V 2 o 5 The content is 0.082%; the leaching solution is further processed into vanadium products. The vanadium recovery rate of the vanadium-titanium magnetite concentrate is 84.4%.

[0029] Crush the residue to -200 mesh, accounting for 70%. Take 2kg of the crushed residue, mix it with 0.4kg of anthracite and 0.04kg of bentonite, and mix it into pellets. The diameter of the pellets is 10-12mm. The pellets are dried in a rotary hearth ...

Embodiment 3

[0032] Get 2.5kg of Panzhihua Baima vanadium-titanium magnetite concentrate (particle size: 200 mesh 67%; main component: V 2 o 5 0.769%, TFe58.66%, FeO27.08%, SiO 2 1.52%, TiO 2 11.09%, MgO 1.63%, MnO 0.432%, Al 2 o 3 3.43%), add 0.2kg of anhydrous sodium sulfate therein, mix and pelletize, the size of the pellets is 8-12mm; the pellets are heated to 1250°C in the muffle furnace and then kept for 30min, then cooled to Take it out at about 150°C. After leaching the roasted pellets with 3L hot water, the residue V 2 o 5 The content is 0.095%, and the leachate is further processed into vanadium products. Vanadium recovery rate of vanadium titanium magnetite concentrate is 83.6%

[0033] Crush the residue to -200 mesh, accounting for 70%. Take 2kg of the crushed residue, mix it with 0.4kg of anthracite and 0.04kg of bentonite, and mix it into pellets. The diameter of the pellets is 10-12mm. The pellets are dried in a rotary hearth furnace After reduction at 1400°C fo...

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Abstract

The invention relates to a comprehensive recovery method of iron, vanadium and titanium for vanadium and titanium magnetite concentrated ores, in particular to the comprehensive recovery and utilization of the vanadium and titanium magnetite concentrated ore of which the vanadium content is higher. In particular, the invention is vanadium extraction through water immersion after the vanadium and titanium magnetite concentrated ore is performed with sodium activation and sintered, the vanadium product is made from leach solution, the remaining slag is performed with reduction quickly through a rotary furnace after carbon is added, the reduction product is melted through the electric furnace, to segregate the melted iron and the titanium slag, the melted iron is used to make steel, and the titanium slag is used to produce white titanium pigment through a sulfuric acid method titanium white technology. The method of the invention is applied to the refining technology of the vanadium and titanium magnetite concentrated ore, to ensure that the recovery rate of the vanadium and titanium is greatly enhanced, the recovery rate of the total vanadium in the iron concentrated ore can reach more than 80 percent, titanium is fully recovered, and the production of massive blast furnace slag is avoided.

Description

technical field [0001] The invention relates to a method for recovering iron, vanadium and titanium in vanadium-titanium magnetite concentrate, in particular to a method for comprehensively recovering iron, vanadium and titanium from vanadium-titanium magnetite concentrate with relatively high vanadium content. Background technique [0002] China's total titanium resources account for 38.85% of the world's total, and vanadium resources account for 11.6% of the world's total, most of which are in the Panzhihua area, mainly in the form of vanadium-titanium magnetite. [0003] At present, the industrial production and comprehensive utilization of vanadium-titanium magnetite concentrate in Panzhihua area is the blast furnace smelting method of "vanadium-titanium magnetite concentrate + ordinary iron concentrate". In the traditional blast furnace smelting-converter vanadium extraction process, the titanium dioxide in the vanadium-titanium magnetite concentrate enters the blast fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/22C22B1/02C22B3/04C21B13/08C01G23/047
CPCY02P10/20
Inventor 付自碧黎建明孙朝晖杨小琴汪智德吴斌刘泽贵边悟张帆彭毅
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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