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Preparation method of ferrovanadium spinel

A technology of spinel and ferrovanadium, which is applied in chemical instruments and methods, vanadium oxide, iron compounds, etc., can solve the problems of difficult preparation of ferrous oxide, high preparation cost, and difficulty in storage, and achieves easy acquisition and high preparation method Simple, easy-to-operate effects

Active Publication Date: 2021-07-20
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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  • Preparation method of ferrovanadium spinel
  • Preparation method of ferrovanadium spinel
  • Preparation method of ferrovanadium spinel

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preparation example Construction

[0028] The invention provides a method for preparing vanadium iron spinel, comprising:

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

[0030] compressing the mixture to obtain flakes;

[0031] The flakes are heated to obtain vanadium-iron 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 to 300 mesh, more preferably 220 to 280 mesh, and more preferably 240 to 300 mesh. 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...

Embodiment 1

[0059] Accurately weigh 4 g of vanadium trioxide powder and 6 g of ferrous oxalate powder according to the weight ratio of 40:60, then put the two into an alumina crucible with a diameter of 3 cm, cover with a rubber plug; put the crucible covered with a rubber plug Put it into a small automatic stirrer and rotate to make the sample fully mixed, the number of rotations is 250r, and the rotation frequency is 50r / min to obtain a mixture.

[0060] The mixture mixed in the crucible was made into a circular sheet 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 slice sample on the heating base in the furnace, and close the furnace door; vacuumize the furnace, and then pass argon into the furnace The inside reaches the standard atmospheric pressure, and then the furnace is evacuated again; this is repeated thr...

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Abstract

The invention provides a preparation method of ferrovanadium spinel, wherein the preparation method comprises the steps: mixing vanadium trioxide and ferrous oxalate to obtain a mixture; tabletting the mixture to obtain a thin sheet; and heating the sheet to obtain the ferrovanadium spinel. Vanadium trioxide and ferrous oxalate are adopted as raw materials to prepare the ferrovanadium spinel, the reaction raw materials are easy to obtain, the cost is low, and storage is simple. The preparation method of the ferrovanadium spinel is simple and easy to operate, and the prepared ferrovanadium spinel can be effectively used for vanadium slag roasting mechanism research.

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 most important vanadium-containing phase in vanadium slag, and it is also the target mineral for vanadium extraction from vanadium slag. 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 skeleton. Determining the phase transition characteristics of vanadium-containing spinel during the oxidation and roasting stage and the migration and occurrence characteristics of vanadium elements has always been the focus of vanadium slag research, and it is also a key link in elucidating the oxidation phase transition mechanism of vanadium slag. The phase transition characteristics of vanadium slag in the oxidation roasting stage with different additives have been st...

Claims

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Application Information

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Patent Type & Authority Applications(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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