Method of separating vanadium and titanium efficiently from vanadium slag mixed material

A vanadium slag and mixing technology, applied in the field of efficient separation of vanadium and titanium, can solve the problems of high energy consumption, high pollution, raw material sintering, etc., and achieve the effect of reducing energy consumption

Active Publication Date: 2019-07-26
SICHUAN UNIV
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Problems solved by technology

[0006] Purpose of the invention: The present invention provides a method for efficiently separating vanadium and titanium from vanadium slag mixture, the purpose of which is to solve the problems of high pollution, high energy consumption and low efficiency in the traditional method of vanadium extraction from vanadium slag, and effectively recover titanium resources in vanadium slag , to solve the problem of raw material sintering in the roasting process

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0034] (1) Crushing and sieving: Crushing the vanadium slag raw material, and sieving to obtain a powder with a diameter of less than 74 μm;

[0035] (2) Modification of vanadium slag: put the vanadium slag with 17.52% vanadium content, 13.10% titanium content and 36.73% iron content in a water quenching furnace, heat it up to 1550°C for 10 minutes with the furnace heating up, melt and water quench, and obtain modified Vanadium slag;

[0036] (3) Crushing and screening: use a planetary ball mill to crush the modified vanadium slag, and obtain a powder with a diameter of less than 74 μm after screening;

[0037] (4) Mixing: Weigh the raw materials according to the mass ratio of vanadium slag: ammonium sulfate: silicon dioxide = 1:2:2, and mix well;

[0038] (5) Tablet pressing: the above-mentioned mixture is made into tablets, the tableting pressure is 0.6Mpa, the diameter of the forming tablet is 13mm, and the thickness is 5mm;

[0039] (6) Roasting and activating: heat up t...

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Abstract

The invention provides a method of separating vanadium and titanium efficiently from a vanadium slag mixed material. The method is characterized by comprising the following steps: (1) crushing and screening; (2) water quenching vanadium slag; (3) crushing and screening; (4) mixing; (5) tabletting; (6) roasting and activating; (7) roasting selectively; (8) cooling and uniformly mixing; (9) leaching; and (10) preparing vanadium pentoxide. Raw materials in the roasting process are prevented from being fused and decomposed by adding a silicon dioxide mixed material to tablet. Vanadium and titaniumare sulfated by ammonium sulfate roasting, and sulfate of titanium is decomposed by means of selective roasting, so that vanadium and titanium in the vanadium slag are separated. The method reduces the energy consumption needed by a conventional vanadium slag roasting and vanadium extracting process, and a tablet is roasted invariable in shape in the reaction process, and the condition that the service life is affected as the tablet is adhered to a reactor is avoided. The method is a typical low-carbon, green and environment-friendly vanadium slag utilization technique.

Description

technical field [0001] The invention relates to a method for efficiently separating vanadium and titanium from mixed vanadium slag, belonging to the technical field of metallurgy. Background technique [0002] Vanadium slag and stone coal are two typical raw materials for the preparation of vanadium pentoxide in my country, but the geological and mineralization factors, resource distribution and mineral phase composition of the two are very different. Vanadium slag is the slag produced by vanadium-titanium magnetite through blast furnace ironmaking and converter steelmaking, which contains a large amount of vanadium-iron spinel phase, ilmenite phase, olivine phase, free quartz and metallic iron. The main sources of resource distribution and production and processing of vanadium-titanium magnetite are the Panzhihua area of ​​Sichuan Province and the Chengde area of ​​Hebei Province. Stone coal is a typical vanadium-bearing shale. The main phases are quartz, muscovite, calcit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B1/06C22B34/12C22B34/22
CPCC22B1/06C22B7/006C22B7/007C22B34/1209C22B34/22Y02P10/20
Inventor 张国权李春罗冬梅吕莉秦治峰刘维燥任恩泽邓晨辉
Owner SICHUAN UNIV
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