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

Title:

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

Document Type and Number:

WIPO Patent Application WO/2018/228142

Kind Code:

A1

Abstract:

An aluminum thermal self-propagation gradient reduction and slag washing and refining-based method for preparing a titanium alloy, which relates to the technical field of titanium aluminum alloys. The method comprises: pre-treating raw materials; weighing the raw materials according to the following mass ratio: rutile or high titanium slag or titanium dioxide:aluminum powder:V2O5 powder:CaO:KClO3 ＝ 1.0:(0.60-0.24):(0.042-0.048):(0.12-0.26):(0.22-0.30); using a manner of gradient feeding to perform an aluminum thermal self-propagation reaction so as to obtain a high-temperature melt; performing gradient reduction smelting; after feeding is complete, performing thermal insulation melting; then adding CaF2-CaO-TiO2-V2O5-based refining slag into the high-temperature melt; performing slag washing and refining; and finally removing the slag to obtain a titanium alloy. The method has the advantages of having a short process, consuming little energy, being simple to operate, the contents of Al and V in the alloy being easy to control, and so on.

Inventors:

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

Application Number:

PCT/CN2018/087692

Publication Date:

December 20, 2018

Filing Date:

May 21, 2018

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Assignee:

UNIV NORTHEASTERN (CN)

International Classes:

C21B15/02; C21B5/04; C22C14/00; C22C1/02; C22C1/06

Foreign References:

CN107151752A	2017-09-12
CN105132724A	2015-12-09
CN104131128A	2014-11-05
JP2009029661A	2009-02-12

Other References:

NERSISYAN, H.H. ET AL.: "Effective Two-Step Method for Producing Ti-6A1-4V Alloy Particles with Various Morphologies", POWDER TECHNOLOGY, vol. 254, 11 January 2014 (2014-01-11), pages 57 - 62, XP028661962, ISSN: 0032-5910, DOI: doi:10.1016/j.powtec.2014.01.005

Attorney, Agent or Firm:

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

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