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Method for smelting titanium-silicon-aluminum intermediate alloy by reducing titanium-containing blast furnace slag with aluminum under atmosphere protection

A technology of aluminum master alloy and master alloy, which is applied in the field of metallurgy, can solve problems such as no practical operation guidance significance, and achieve the effects of less impurities, less waste, and high titanium content

Inactive Publication Date: 2020-10-23
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In fact, this method has no guiding significance for practical operation. Repeating its operation, there is no obvious metal-like agglomerates in the shape of lumps, granules, and spheres in the cooled product.

Method used

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  • Method for smelting titanium-silicon-aluminum intermediate alloy by reducing titanium-containing blast furnace slag with aluminum under atmosphere protection
  • Method for smelting titanium-silicon-aluminum intermediate alloy by reducing titanium-containing blast furnace slag with aluminum under atmosphere protection
  • Method for smelting titanium-silicon-aluminum intermediate alloy by reducing titanium-containing blast furnace slag with aluminum under atmosphere protection

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Embodiment 1～6

[0038] In this embodiment, the method of titanium-containing blast furnace slag vacuum decompression protection aluminothermic reduction smelting titanium-silicon-aluminum alloy includes the following steps:

[0039] A. Crush the solid titanium-containing blast furnace slag, aluminum powder, lime, and fluorite to a particle size of 0.5mm; mix 100g of solid titanium-containing blast furnace slag, 30-50g of aluminum powder, 20-28g of lime and 0-10g of fluorite Until the mixing degree is ≥98.5%, after pelletizing and drying, the pellet material is obtained; the pellet material is put into figure 1 In the vacuum reduction reaction device shown, the aluminum reduction metallurgical reaction is protected under a vacuum decompression atmosphere for 0.5h at a temperature of 1550°C and a vacuum degree of 100Pa;

[0040] B. After the reaction is completed, the reaction product is isolated from air and cooled to room temperature, and the slag and alloy are mechanically separated to obtai...

Embodiment 5

[0044] Example 5 Reaction alloy product and slag, alloy separation effect diagram see for details figure 2 . Embodiment 5 reaction alloy product scanning electron microscope picture sees for details image 3 . Depend on figure 2 It can be seen that the alloy product of the present invention is easy to separate from slag, the automatic separation effect of slag and alloy is good, and the boundary between slag and alloy is obvious. Depend on image 3 It can be seen that the alloy structure of the present invention is uniform in shape and clear in structure.

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Abstract

The invention relates to a method for smelting a titanium-silicon-aluminum intermediate alloy by reducing a titanium-containing blast furnace slag with aluminum under atmosphere protection, and belongs to the technical field of metallurgy. The method for smelting the titanium-silicon-aluminum intermediate alloy by reducing the titanium-containing blast furnace slag with the aluminum under atmosphere protection comprises the following steps: A. Mixing the titanium-containing blast furnace slag, aluminum powder, lime, and flux according to a mass ratio100:30-50:20-28:0-10, and reacting under Arprotection or vacuum protection of 1-1000Pa at a temperature of 1500-1700 DEG C; and B. After the reaction is completed, cooling a reaction product through isolating from air and cooling to a room temperature, then crushing and deslagging to obtain titanium-containing titanium-silicon-aluminum intermediate alloy. An alloy phase prepared by the method of the invention has high titanium content, lowsilicon and iron content, and can realize economical titanium extraction, so the waste of titanium resources is reduced greatly.

Description

technical field [0001] The invention relates to a method for smelting a titanium-silicon-aluminum master alloy by reducing titanium-containing blast furnace slag under the protection of an atmosphere, and belongs to the technical field of metallurgy. Background technique [0002] High-titanium blast furnace slag is not only rich in calcium oxide, magnesium oxide, silicon dioxide, aluminum oxide, iron oxide, metallic iron, physical sensible heat and other resources, but also rich in titanium dioxide resources, which is a valuable strategic resource and secondary resources. Panzhihua's titanium resources account for 90% of the country's titanium resources, and the titanium resources in Panzhihua's high-titanium blast furnace slag account for about 50% of Panzhihua's titanium resources. Therefore, Panzhihua high-titanium blast furnace slag must be comprehensively utilized as much as possible. The main chemical components of Panzhihua high-titanium blast furnace slag are shown...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C21B3/04C22B34/12C22C1/03
CPCC21B3/04C22B7/001C22B7/04C22B34/1277C22C1/03Y02W30/50Y02P10/20
Inventor 丁满堂
Owner PANZHIHUA UNIV
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