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Method for extracting iron titanium vanadium from high-titanium iron concentrate

A high-titanium, vanadium-iron technology, which is applied in the field of polymetallic mineral processing, can solve the problems of difficult recovery of refined vanadium, and achieve good social benefits, improved production efficiency, and fewer types and quantities

Inactive Publication Date: 2008-01-30
张荣禄
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Problems solved by technology

[0004] A method for producing titanium tetrachloride from titanium-containing blast furnace slag is disclosed in the invention patent application publication whose patent number is CN87107488.5. Although the enlarged test of this method has been successful, there are still low-temperature chlorides in titanium carbide vanadium-chromium slag. Chemical industry fluidized bed start-up and chlorination operation bed temperature control, vanadium-containing TiCl 4 Difficulty in refining and vanadium recovery

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  • Method for extracting iron titanium vanadium from high-titanium iron concentrate

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Experimental program
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Effect test

Embodiment 1

[0048] High titanium vanadium iron concentrate (composition: TFe51.74%, FeO 29.65%, Fe 2 o 3 50.65%, V 2 o 5 0.56%, TiO 2 14.02%, Cr 2 o 3 0.45%, SiO 2 4.77%, Al 2 o 3 33.5%, CaO 1.79%, MgO 4.23%) are smelted in a pre-reduction hot-charging electric furnace with CaO supplementing carbon, and the rate of vanadium reduction into iron is controlled at 68% as the smelting end point. The composition of the molten iron produced is: C2.51%, V0.49%, Cr0.50%, Ti0.15%, Si0.16%, S0.06%. The composition of vanadium-containing titanium-rich slag is TiO 2 40%, V 2 o 5 0.35%, Cr 2 o 3 0.25%, CaO 13.60%, MgO 12.01%, SiO 2 17.06%, Al 2 o 3 13.43%, FeO 1.23%. Iron extraction rate and slag production rate are respectively: 500kg Fe / t·concentrate, 350kg vanadium-containing titanium-rich slag / t·concentrate. The vanadium-chromium-containing hot metal is used as the raw material for the production of vanadium-chromium-containing steel slag by steelmaking, and the vanadiu...

Embodiment 2

[0066] High-titanium ferrovanadium concentrate (composition: TFe 62.0%, FeO 30.6%, Fe 2 o 3 55.0%, V 2 o 5 0.57%, TiO 2 6.1%, Cr 2 o 3 0.75%, SiO 2 1.6%, Ae 2 o 3 2.5%, CaO 1.79%, MgO 2.6%) are smelted in a pre-reduction hot-charging electric furnace and CaO carbon supplement, and the smelting end point is controlled by controlling the rate of vanadium reduction into iron to 71%. The components of molten iron produced are: C 2.72%, V 0.38%, Cr 0.55%, Ti 0.18%, Si 0.16%, Si 0.20%. The composition of vanadium-containing titanium-rich slag is TiO 2 26.50%, V 2 o 5 0.62%, Cr 2 o 3 0.75%, CaO 17.50%, MgO 10.20%, SiO 2 20.6%, Al 2 o 3 19.31%, FeO 1.05%. Iron extraction rate and slag production rate are respectively: 610kg Fe / t·concentrate, 230kg vanadium-containing titanium-rich slag / t·concentrate. The vanadium-chromium-containing hot metal is used as the raw material for the production of vanadium-chromium-containing steel slag by steelmaking, and the v...

Embodiment 3

[0084] The blast furnace smelting composition is: TFe 51.52%, FeO3 2.26%, V 2 o 5 0.49%, Cr 2 o 3 0.03%, TiO 2 12.73%, SiO 2 3.37%, MgO 4.66%, Al 2 o 3 4.59%, S 0.24%) high-titanium ferro-vanadium concentrate, the production of vanadium-chromium-containing iron water is accompanied by production of vanadium-containing titanium-rich slag, and the rate of vanadium reduction into iron is 75%. The components of vanadium-chromium-containing hot metal are: C 4.3%, SiO 20.2%, Ti 0.2%, V 0.34%, Cr 0.06%. The composition of vanadium-containing titanium-rich slag is TiO 2 23.10%, V 2 o 5 0.27%, Cr 2 o 3 0.014%, CaO2 6.80%, FeO 0.5%, MgO 8.08%, SiO 2 23.336%, Al 2 o 3 13.80%, TFe 2.1%, slag to iron = 0.8. The vanadium-chromium-containing hot metal is used as the raw material for the secondary production of chromium-containing steel slag, and the vanadium-rich titanium-rich slag is used as the raw material for the production of titanium carbide vanadium-chromium s...

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Abstract

The invention discloses an iron-titanium-vanadium extracting method from high-titanium ferrovanadium concentrate ore. By adopting the method to make steel, fine TiCI4 and V2O5 have the advantages that: technological processes are simple and reasonable; energy consumption is low; yield rate of iron-titanium-vanadium is high and three wastes (waste gas, waste water and waste slag) are fewer. The method comprises the steps: iron smelting: a high furnace or an electric furnace is adopted to smelt iron to make melten iron containing vanadium and chromium and make titanium-enriched slag as byproduct and the rate of vanadium reduced and added into iron is 60-78 percent; single-slag steel-making: melten iron containing vanadium and chromium is put into a converter furnace directly to make steel by the function of oxygen blowing, and steel slag containing vanadium and chromium is obtained as byproduct; carbonized titanium-vanadium-chromium slag with 80-95 percent of carbonization rate is made by smelting reduction carbonization by the electric furnace smelting selection; TiCl4 containing vanadium is made by selective chlorination of carbonized titanium-vanadium-chromium slag in a fluidized bed at low temperature, and residual slag of chlorination containing CrCl3 is byproduct; vanadium titanium separation: VOCI3 is directly reduced by cycloolefine or naphthenic acid to make VOCl2 which can not dissolve in TiCI4, while the VOCI3 can be dissolved in TiCI4. Then the fine TiCI4 is made and the slurry TiCI4 containing rich vanadium is also made as byproduct; V2O5 is extracted from the rich vanadium containing slurry TiCI4.

Description

technical field [0001] The invention relates to a method for treating polymetallic minerals, especially suitable for separating iron, titanium and vanadium from high-titanium vanadium iron concentrate and similar minerals. Background technique [0002] High titanium vanadium iron concentrate is a polymetallic mineral product containing iron, titanium, vanadium and chromium. The domestic industrial-scale production process for the development and utilization of this mineral product is: ordinary blast furnace smelting and production of vanadium-chromium-containing molten iron with secondary production of TiO 2 22-24% vanadium-containing titanium-rich slag. The vanadium-chromium-containing molten iron uses converter oxygen blowing to smelt vanadium-chromium slag--semi-steel converter steelmaking. The yield of vanadium from vanadium-chromium-containing molten iron to commercial vanadium-chromium slag is 70%. The composition of vanadium-chromium slag is: V 2 o 5 18.7%, TFe 3...

Claims

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Application Information

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IPC IPC(8): C22B34/00C22B34/12C22B34/22C22B34/32C21C5/28C21B5/04
Inventor 张荣禄
Owner 张荣禄
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