METHOD FOR PREPARING FERROVANADIUM ALLOY BASED ON ALUMINUM THERMAL SELF-PROPAGATION GRADIENT REDUCTION AND SLAG WASHING AND REFINING

Title:

METHOD FOR PREPARING FERROVANADIUM ALLOY BASED ON ALUMINUM THERMAL SELF-PROPAGATION GRADIENT REDUCTION AND SLAG WASHING AND REFINING

Document Type and Number:

WIPO Patent Application WO/2018/228139

Kind Code:

A1

Abstract:

A method for preparing a ferrovanadium alloy based on aluminum thermal self-propagation gradient reduction and slag washing and refining, comprising: (1) aluminum thermal self-propagation gradient reduction: a first scheme, raw materials are divided into several batches, a first batch of a material is fed into a reaction furnace, magnesium powder is ignited at the top of the material to induce a self-propagating reaction, and other batches of materials are added successively until completely reacted; a second scheme: raw materials other than aluminum powder are mixed evenly and added at a uniform flow rate into a continuous mixer, at the same time, aluminum powder is added at flow rates of decreasing gradient into the continuous mixer, the evenly mixed raw materials are simultaneously and continuously introduced into a reaction furnace for an aluminum thermal self-propagation reaction until all of the raw materials are completely reacted; (2) insulated smelting to produce an upper layer aluminum oxide-based slag and a lower layer alloy melt; (3) spraying a refined slag in the lower layer alloy melt for stirring, slag washing and refining; (4) cooling the refined high-temperature melt to room temperature, and removing an upper layer smelting slag to produce the ferrovanadium alloy.

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Inventors:

DOU ZHIHE (CN)
ZHANG TINGAN (CN)
LIU YAN (CN)
CHENG CHU (CN)
LV GUOZHI (CN)
ZHAO QIUYUE (CN)
NIU LIPING (CN)
FU DAXUE (CN)
ZHANG WEIGUANG (CN)

Application Number:

PCT/CN2018/087685

Publication Date:

December 20, 2018

Filing Date:

May 21, 2018

Export Citation:

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Assignee:

UNIV NORTHEASTERN (CN)

International Classes:

C22C27/02; C22B5/04; C22C1/02; C22C1/06; C22C33/04; C22C35/00; C22C38/02; C22C38/06; C22C38/12

Foreign References:

CN107099715A	2017-08-29
CN107099696A	2017-08-29
CN107099718A	2017-08-29
CN104131178A	2014-11-05
CN106191639A	2016-12-07
CN104131128A	2014-11-05
CN104120304A	2014-10-29
RU2485194C1	2013-06-20
RU2506338C1	2014-02-10

Attorney, Agent or Firm:

SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)

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