Method for separating iron and vanadium and titanium from vanadium titano-magnetite

A technology for separating vanadium titanomagnetite and iron, applied in the field of metallurgy, can solve the problems of iron recovery rate only reaching 69%, no separation index of iron and titanium vanadium, failure to use effectively, etc., so as to reduce energy consumption and crystal size. The effect of reducing and prolonging the service life

Inactive Publication Date: 2012-05-02
攀枝花鑫润矿业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The application number is 200910304064.x, and the Chinese patent application titled "Preparation Method of Metallized Pellets and Reduced Iron Powder" discloses a method for separating and preparing reduced iron powder from vanadium-titanium magnetite. Temperature is 800~1400 ℃, but as can be seen from its embodiment, its minimum reduction temperature only reaches 1000 ℃, and this embodiment does not have the separation index of iron and titanium vanadium, and the iron recovery rate only reaches 69%; For ordinary iron concentrate, the iron recovery rate is up to 83%
[0011] Due to the large demand for iron resources in our country, the reserves of vanadium-titanium magnetite are large and widely distributed, except that Panzhihua Iron and Steel and Chengde Iron and Steel Works use iron and vanadium in blast furnace smelting (the recovery rate of vanadium is only about 50%, and titanium cannot effective utilization), other areas have not been effectively utilized, therefore, how to make full use of the vanadium-titanium magnetite resource and improve the recovery rate of each element has become a technical problem that needs to be solved urgently in this field

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  • Method for separating iron and vanadium and titanium from vanadium titano-magnetite

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Embodiment 1

[0038] Embodiment 1 adopts the inventive method to separate iron and vanadium-titanium from vanadium-titanium magnetite

[0039] Mix vanadium-titanium magnetite with additive (sodium chloride) and carbonaceous reducing agent (anthracite) in a weight ratio of 100 / 20 / 20, then put it into an alloy tank, and heat it in a muffle furnace to 950°C and Keep warm for 6 hours to obtain reduced ingots; the reduced ingots are crushed, the first stage grinding fineness is -325 mesh 90%, 1200 Oersted magnetic separation; the magnetic separation concentrate enters the second stage grinding, the second stage grinding fineness is -325 mesh 95%, 1200 Oersted magnetic separation; the magnetic separation concentrate enters three-stage grinding, and the third-stage grinding fineness is -325 mesh 98%, and 500 Oersted magnetic separation, to obtain sponge iron (that is, primary reduced iron powder) and vanadium-rich titanium materials. Among them, the chemical composition and -200 mesh content of t...

Embodiment 2

[0040] Embodiment 2 adopts the inventive method to separate iron and vanadium-titanium from vanadium-titanium magnetite

[0041]Mix vanadium-titanium magnetite with additive (sodium chloride) and carbonaceous reducing agent (anthracite) in a weight ratio of 100 / 20 / 22, then put it into an alloy tank, and heat it in a tunnel kiln to 920°C and keep it warm After 60 hours, the reduced ingot was obtained; the reduced ingot was crushed, the first-stage grinding fineness was -200 mesh 60%, and 1200 Oersted magnetic separation; the magnetic separation concentrate entered the second-stage grinding, and the second-stage grinding fineness was -200 mesh 65 %, 1200 Oersted magnetic separation; the magnetic separation concentrate enters three-stage grinding, and the three-stage grinding fineness is -200 mesh 70%, and 500 Oersted magnetic separation obtains sponge iron (i.e. primary reduced iron powder) and Vanadium-rich titanium material. Among them, the chemical composition and -200 mesh ...

Embodiment 3

[0042] Embodiment 3 adopts the inventive method to separate iron and vanadium-titanium from vanadium-titanium magnetite

[0043] Mix vanadium-titanium magnetite with additive (sodium chloride) and carbonaceous reducing agent (anthracite) in a weight ratio of 100 / 15 / 18, then put it into an alloy tank, and heat it in a tunnel kiln to 980°C and keep it warm After 60 hours, the reduced ingot was obtained; the reduced ingot was crushed, the first-stage grinding fineness was -200 mesh 60%, and 1200 Oersted magnetic separation; the magnetic separation concentrate entered the second-stage grinding, and the second-stage grinding fineness was -200 mesh 65 %, 1200 Oersted magnetic separation; the magnetic separation concentrate enters three-stage grinding, and the three-stage grinding fineness is -200 mesh 70%, and 500 Oersted magnetic separation obtains sponge iron (i.e. primary reduced iron powder) and Vanadium-rich titanium material. Among them, the chemical composition and -200 mesh...

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Abstract

The invention relates to a method for separating iron and vanadium and titanium from vanadium titano-magnetite, which belongs to the technical field of metallurgy. The technical problem to be solved of the invention is to provide a method for separating iron and vanadium and titanium from vanadium titano-magnetite, which has high iron recovering rate. The method for separating iron and vanadium and titanium from vanadium titano-magnetite comprises the following steps of: a, burdening: uniformly mixing 100 parts by weight of vanadium titano-magnetite, 15-20 parts by weight of additive and 15-25 parts by weight of reducing agent, wherein the additive is at least one of sodium chloride, sodium sulfate and sodium carbonate; b, charging and reducing: charging the mixture which is uniformly mixed in the step a, heating to 920-980 DEG C in a tunnel kiln, and preserving heat for 5-60 hours to obtain reduced ingots; and c, separating: crashing the reduced ingots, and separating magnetically toobtain reduced iron powder and a vanadium and titanium-rich material.

Description

technical field [0001] The invention relates to a method for separating iron and vanadium-titanium from vanadium-titanium magnetite, which belongs to the technical field of metallurgy. Background technique [0002] my country's Panzhihua area is rich in vanadium-titanium magnetite resources, and vanadium-titanium magnetite can be reduced to obtain reduced iron powder and vanadium-rich titanium materials. [0003] In 1983, Liang Jingdong et al. successfully carried out the semi-industrial test of "tunnel kiln reduction grinding method to produce acid-soluble titanium-rich material and high-quality iron powder from Panzhihua titanium concentrate", which processed 5.8 tons of vanadium-titanium magnetite concentrate per day. Vanadium-rich titanium material (non-magnetic product) containing TiO 2 66.2%, which is characterized by good acid solubility, acid hydrolysis rate as high as 97%, fine particle size, easy transformation in the preparation of rutile titanium dioxide, and is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B5/10C22B34/22C22B34/12C21B13/00B02C23/08
CPCY02P10/20
Inventor 梁经冬段祁荣梁毅杨雪峰梁建昂王志敏
Owner 攀枝花鑫润矿业有限公司
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