Vanadium-aluminum alloy and preparation method thereof

A vanadium-aluminum alloy and vanadium pentoxide technology, applied in the field of metallurgy, can solve problems such as limiting the output of vanadium-aluminum alloys and increasing manufacturing costs, and achieve the effects of facilitating the separation of slag and gold, high alloy quality, and high alloy purity

Inactive Publication Date: 2015-05-13
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since the aluminothermic reaction is carried out in a closed pressure vessel, the output of vanadium-aluminum alloy is greatly limited. In addition, due to the requirement of strong pressure resistance of the equipment, the manufacturing cost will be increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The preparation method of vanadium-aluminum alloy uses vanadium pentoxide and aluminum particles as raw materials, adopts the mode of one-time laying, and ignites and reduces to obtain vanadium-aluminum alloy; wherein, the weight ratio of vanadium pentoxide to aluminum particles is 1.15-1.8: 1. A graphite crucible with an inner wall coated with fused magnesia and a lid with a hole is used as a smelting furnace.

[0016] In order to further reduce the content of impurities in the vanadium-aluminum alloy, the purity of the vanadium pentoxide is ≥99.7%, and the purity of the aluminum particles is ≥99.85%.

[0017] Preferably, in the above-mentioned preparation method of vanadium-aluminum alloy, the diameter of the hole is 1-2 cm, and the hole density of the cover with holes is 15-20 holes / m 2 .

[0018] In the method of the present invention, excessive aluminum particles are used to form vanadium-aluminum alloy through the fusion of aluminum particles and metal vanadium d...

Embodiment 1

[0021] Take 100kg of vanadium pentoxide and 55.7kg of aluminum particles as raw materials, the weight ratio of vanadium pentoxide and aluminum particles is 1.68:1, use analytically pure barium peroxide as the ignition agent, and coat the inner wall with fused magnesium fire clay The aluminothermic reduction reaction was carried out in a graphite crucible with a drilled cover. After the aluminothermic reaction was completed, it was left to stand for 30 minutes to obtain 62.3kg of vanadium-aluminum alloy products, which contained V 90.06wt%, Al 9.63wt%, Fe 0.15wt%, Si 0.11wt%.

Embodiment 2

[0023] Take 100kg of vanadium pentoxide and 63.7kg of aluminum particles as raw materials, the weight ratio of vanadium pentoxide and aluminum particles is 1.58:1, use analytically pure barium peroxide as the ignition agent, and coat the inner wall with fused magnesium fire clay The thermite reduction reaction was carried out in a graphite crucible with a perforated lid. After the aluminothermic reaction was completed, it was left to stand for 30 minutes to obtain 66.76kg of vanadium-aluminum alloy product, which contained 85.04wt% of V, 14.6wt% of Al, 0.12wt% of Fe and 0.19wt% of Si.

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Abstract

The invention belongs to the field of metallurgy, in particular relates to a vanadium-aluminum alloy and a preparation method thereof and aims at solving the technical problem of providing the preparation method of the vanadium-aluminum alloy. The preparation method comprises the following steps: with vanadium pentoxide and aluminum as raw materials, carrying out ignition to carry out reduction reaction, and preparing the vanadium-aluminum alloy, wherein the weight ratio of the vanadium pentoxide to the aluminum is (1.15-1.8) to 1, a graphite crucible with a cover is taken as a smelting furnace, fused magnesia cement is coated on the whole inner wall of the graphite crucible, and a hole is formed in the cover. The preparation method is low in cost and is capable of preparing the vanadium-aluminum alloy with low impurity and high quality.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a vanadium-aluminum alloy and a preparation method thereof. Background technique [0002] The aluminothermic method is a method of obtaining high-melting-point metal elements by using the reducibility of aluminum. Thermite refers to a mixture of aluminum and metal oxides. After mixing aluminum powder with a certain amount of high-melting-point metal oxides (such as iron oxide, etc.), and igniting it with a magnesium strip, it can be seen that the aluminum powder reacts violently at a higher temperature, and the reaction releases a large amount of heat and emits dazzling light. The product is aluminum oxide and the simple substance of the high melting point metal. The aluminothermic reaction is very intense, so it is difficult to extinguish after ignition, and it is difficult to control the reaction process after ignition. The reaction is to put the charge into the furnace...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C27/02
Inventor 陈海军孙朝晖邓孝伯尹丹凤王永钢周芳鲜勇
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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