Preparation method for high calcium aluminium alloy, and high calcium aluminium alloy

An aluminum alloy and high-calcium technology, applied in the preparation of high-calcium aluminum alloys and high-calcium aluminum alloys, can solve the problems of low steelmaking efficiency, influence of desulfurization, and slow slag formation, so as to improve steelmaking efficiency and reduce The effect of fast pollution and slag formation

Pending Publication Date: 2020-07-31
肖卫学 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention provides a method for preparing high-calcium aluminum alloys and high-calcium aluminum alloys, which are used to solve the problems of easy pollution, slow slag formation, low steelmaking efficiency and subsequent desulfurization in the existing steelmaking technology. impactful, costly issues

Method used

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  • Preparation method for high calcium aluminium alloy, and high calcium aluminium alloy
  • Preparation method for high calcium aluminium alloy, and high calcium aluminium alloy
  • Preparation method for high calcium aluminium alloy, and high calcium aluminium alloy

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preparation example Construction

[0032] Such as figure 1 As shown, the preparation method of the high-calcium aluminum alloy according to the embodiment of the present invention includes:

[0033] Step S1, weighing raw materials and mixing them uniformly to form a mixture, the raw materials include waste aluminum ash, calcium oxide and carbon powder;

[0034] Step S2, smelting the mixture in a smelting furnace to obtain a smelted product;

[0035] Step S3, cooling and pulverizing the smelted product to obtain a high-calcium aluminum alloy.

[0036] That is to say, first weigh the raw materials and mix them uniformly to form a mixture. The raw materials can be mixed evenly by stirring in a mixing container. The raw materials include waste aluminum ash, calcium oxide and carbon powder. Waste slag and waste aluminum ash mainly contain alumina, a small amount of aluminum and a small amount of impurities; the mixture is smelted in a smelting furnace to obtain smelted products. The smelting furnace can be an elec...

Embodiment 1

[0047] The raw materials are weighed and mixed uniformly to form a mixture, the raw materials include 60 parts by weight of waste aluminum ash, 45 parts by weight of calcium oxide and 10 parts by weight of carbon powder;

[0048] The mixture is placed in an electric arc furnace, and the mixture is smelted at 1480°C for 2.5 hours to obtain a smelted product;

[0049] The smelted product is cooled and crushed to obtain a high-calcium aluminum alloy, the specific gravity of aluminum is 40%, and the specific gravity of calcium is 20%.

Embodiment 2

[0051] Weighing the raw materials and mixing them uniformly to form a mixture, the raw materials include 80 parts by weight of waste aluminum ash, 30 parts by weight of calcium oxide and 5 parts by weight of carbon powder;

[0052] The mixture is placed in an electric arc furnace, and the mixture is smelted at 1520°C for 2 hours to obtain a smelted product;

[0053] The smelted product is cooled and pulverized to obtain a high-calcium aluminum alloy, the specific gravity of aluminum is 60%, and the specific gravity of calcium is 25%.

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Abstract

The embodiment of the invention provides a preparation method for high calcium aluminium alloy, and the high calcium aluminium alloy. The preparation method comprises the steps of weighing and mixingraw materials uniformly to form mixtures, wherein the raw materials comprise aluminium scruff ash, calcium oxide and carbon powder; placing the mixtures in a smelting furnace for smelting to obtain smelting materials; and cooling and crushing the smelting materials to obtain the high calcium aluminium alloy. According to the high calcium aluminium alloy prepared with the above method, the aluminium scruff ash can be recycled, and the high calcium aluminium alloy is applied to the steel-making process; pollution can be reduced, and dust is not liable to produce at a production site; the slag forming speed is high, and the steel-making efficiency is improved; and subsequent desulfurization is not affected, and the cost is low.

Description

technical field [0001] The invention relates to the field of steelmaking, in particular to a method for preparing a high-calcium aluminum alloy and the high-calcium aluminum alloy. Background technique [0002] The deoxidation in the existing steelmaking production process mainly uses aluminum block and some low-cost refining slag or pellets. When aluminum block is used for deoxidation, the cost of aluminum block is high and the yield in molten steel is low. According to the application of steel mills According to the data, the yield is 50-55%. In addition, the reducing atmosphere of the molten steel is increased by deoxidizing the aluminum block, which has a great influence on the desulfurization in the later stage of refining, which is not conducive to desulfurization. Finally, in the continuous casting, due to the increase of the aluminum content in the molten steel, It is very easy to produce "overhole" phenomenon, which will affect the continuous casting rhythm and incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06C22C1/02C22C21/00
CPCC21C7/06C21C7/0006C22C1/026C22C21/00
Inventor 肖卫学
Owner 肖卫学
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