A kind of preparation method of vanadium iron spinel

A spinel, ferrovanadium technology, applied in chemical instruments and methods, vanadium oxide, iron compounds and other directions, can solve the problems of difficult preparation of ferrous oxide, high preparation cost, difficult storage and the like, and achieves easy acquisition and preparation method. Simple, easy-to-use effects

Active Publication Date: 2022-07-29
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The chemical formula of vanadium iron spinel is FeO V 2 o 3 , theoretically synthesized from ferrous oxide and vanadium trioxide, but the preparation of ferrous oxide is relatively difficult, the production cost is high, time-consuming and difficult to preserve, resulting in few products on the market

Method used

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  • A kind of preparation method of vanadium iron spinel
  • A kind of preparation method of vanadium iron spinel
  • A kind of preparation method of vanadium iron spinel

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preparation example Construction

[0028] The invention provides a preparation method of ferrovanadium spinel, comprising:

[0029] Mixing vanadium trioxide and ferrous oxalate to obtain a mixture;

[0030] tableting the mixture to obtain flakes;

[0031] The flakes are heated to obtain ferrovanadium spinel.

[0032] In the present invention, the vanadium trioxide is preferably vanadium trioxide powder; the particle size of the vanadium trioxide powder is preferably 200-300 mesh, more preferably 220-280 mesh, more preferably 240- 260 mesh, most preferably 250 mesh; the ferrous oxalate is preferably ferrous oxalate powder, and the particle size of the ferrous oxalate powder is preferably 200-300 mesh, more preferably 220-280 mesh, more preferably 240 mesh ~260 mesh, most preferably 250 mesh.

[0033] In the present invention, the mass ratio of the vanadium trioxide and ferrous oxalate is preferably (35-45): (55-65), more preferably (38-42): (58-62), most preferably 40:60.

[0034] In the present invention, ...

Embodiment 1

[0059] Accurately weigh 4g of vanadium trioxide powder and 6g of ferrous oxalate powder according to the weight ratio of 40:60, then put the two into an alumina crucible with a diameter of 3cm and cover with a rubber cork; Put it into a small automatic stirrer and rotate to make the sample fully mixed.

[0060] The mixed mixture in the crucible is made into circular slices with a diameter of about 2 cm by using a tablet press.

[0061] Use alcohol to scrub the inner wall of the vacuum induction melting furnace. After the alcohol is completely volatilized, put the alumina crucible with the thin sample on the heating base in the furnace, and close the furnace door; the furnace is evacuated, and then argon gas is introduced into the furnace. The inside of the furnace reaches the standard atmospheric pressure, and then the furnace is evacuated again; this is repeated three times to ensure that there is no air left in the furnace and a vacuum environment is maintained.

[0062] St...

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Abstract

The invention provides a method for preparing ferrovanadium spinel, which comprises: mixing vanadium trioxide and ferrous oxalate to obtain a mixture; compressing the mixture to obtain flakes; heating the flakes to obtain Vanadium iron spinel. The invention adopts vanadium trioxide and ferrous oxalate as raw materials to prepare ferrovanadium spinel, and the reaction raw materials are easy to obtain, low in cost and simple in storage. The preparation method of the ferrovanadium spinel provided by the invention is simple and easy to operate, and the prepared ferrovanadium spinel can be effectively used for the research on the roasting mechanism of vanadium slag.

Description

technical field [0001] The invention belongs to the technical field of spinel, and in particular relates to a preparation method of vanadium iron spinel. Background technique [0002] Vanadium-containing spinel is the main vanadium-containing phase in vanadium slag, and it is also the target mineral for vanadium slag oxidation to extract vanadium. Vanadium-containing spinel is a complex metal oxide solid solution containing V, Fe, Ti, Cr, Mg, Al and other metal elements with vanadium iron spinel as the framework. It has always been the focus of vanadium slag research to clarify the phase transformation characteristics of vanadium-containing spinel during the oxidative roasting stage and the migration and occurrence characteristics of vanadium elements, and it is also a key link to explain the oxidative phase transformation mechanism of vanadium slag. The phase transition characteristics of vanadium slag in the oxidative roasting stage with different additives have been stud...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/00C01G49/04C01G31/02
CPCC01G49/00C01G49/04C01G31/02C01P2002/72C01P2004/03C01P2004/61
Inventor 高健钟祥史志新
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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