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Title:
ALUMINUM THERMAL SELF-PROPAGATION GRADIENT REDUCTION AND SLAG WASHING AND REFINING-BASED METHOD FOR PREPARING TUNGSTEN-IRON ALLOY
Document Type and Number:
WIPO Patent Application WO/2018/228141
Kind Code:
A1
Abstract:
Provided in the present invention is an aluminum thermal self-propagation gradient reduction and slag washing and refining-based method for preparing a tungsten-iron alloy, comprising: (1) aluminum thermal self-propagation gradient reduction: a first manner comprising raw materials being divided into several batches, and a first batch of materials being placed into a reaction furnace, magnesium powder then being ignited from a top portion of the materials so as to initiate a self-propagation reaction, while the other batches of materials are added sequentially until the reaction is complete; the second manner comprising raw materials other than aluminum powder being uniformly mixed and added into a continuous mixer at a uniform flow rate, while the aluminum powder is added into the continuous mixer at a graded decreasing flow rate, the mixed raw materials then being continuously introduced into a reaction furnace to carry out an aluminum thermal self-propagation reaction until all of the materials have reacted completely; (2) thermal insulation smelting to obtain an upper layer of aluminum oxide-based slag and a lower layer of an alloy melt; (3) injecting refining slag into the lower layer of the alloy melt to carry out stirring slag washing and refining; (4) cooling the refined high-temperature melt to room temperature, and removing an upper layer of smelting slag so as to obtain a tungsten-iron alloy.

Inventors:
DOU ZHIHE (CN)
ZHANG TING'AN (CN)
LIU YAN (CN)
LV GUOZHI (CN)
ZHAO QIUYUE (CN)
NIU LIPING (CN)
FU DAXUE (CN)
ZHANG WEIGUANG (CN)
Application Number:
PCT/CN2018/087687
Publication Date:
December 20, 2018
Filing Date:
May 21, 2018
Export Citation:
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Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
C22C27/04; C22B34/36; C22C1/02; C22C35/00
Foreign References:
CN107099718A2017-08-29
CN106591580A2017-04-26
JP2009029661A2009-02-12
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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