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High-aluminum iron alloy deoxidizer and preparation method thereof

A ferroalloy and deoxidizer technology, which is applied in the field of high-alumina ferroalloy deoxidizer and its preparation, can solve the problems of increased steelmaking cost, low aluminum yield, high processing cost, etc., and achieves reduced usage, high aluminum recovery rate, cost saving effect

Inactive Publication Date: 2021-04-13
PANZHIHUA GANGCHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high processing cost of low-aluminum 40 aluminum-iron produced by intermediate frequency furnace (60% iron needs to be heated and melted to 1600 ℃ and fused with metal aluminum for more than 1 hour, the aluminum loss in the process is large), and there are aluminum products such as pure aluminum ingots and aluminum pellets. Disadvantages such as low aluminum yield and high consumption will increase the cost of steelmaking. The large loss of aluminum is because aluminum is volatile after melting, and there is no other substance to fix aluminum

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, 2 tons of national standard double-zero aluminum ingots (99.73% aluminum content) and 1 ton of 1-series recycled aluminum (99.0% aluminum content) are added to 4 tons of rectangular regenerative melting and holding furnace with refining function and magnetic window, and the melting temperature is 700°C ~750°C, holding temperature 650°C~720°C, and then enter the L-shaped crystallizer through the launder with castables, and add 1 ton of particle size 0 at the entrance of the L-shaped crystallizer at a mass ratio of 3:1. ~3mm and normal temperature national standard S930 steel shot, the aluminum mixture flowing out of the crystallizer is cast into a billet shape with a size of 60mm through a continuous casting machine, the temperature of the outgoing aluminum mixture is 530°C, and it is directly semi-heated with a double-roll mill Rolled into alloy block, the alloy block is then cooled, the semi-hot rolling temperature is 420°C, the size of the alloy block rolled by ...

Embodiment 2

[0026] First, add 4 tons of national standard double-zero aluminum ingots (99.73% aluminum content) and 1 ton of 1-series recycled aluminum (99.0% aluminum content) into 5 tons of rectangular regenerative melting and holding furnace with refining function and magnetic window. The melting temperature is 750 ° C ~ 810 ° C. ℃, holding temperature 650℃~720℃, slag removal 10kg, and then enter the L-shaped crystallizer through the launder with castable, and add a total weight of 1.25t at the entrance of the crystallizer at a mass ratio of 4:1 Sand, of which: counterweight sand with a particle size of 2 to 3mm and a specific gravity greater than 7.3g / cm 3 It is obtained by mixing ball mill seed iron material with national standard S930 steel shot with a particle size of 0-3mm. The aluminum mixture liquid flowing out of the crystallizer is cast into a billet with a size of 40mm through a continuous casting machine. The temperature of the aluminum mixture liquid flowing out is 550°C. T...

Embodiment 3

[0028] First, 4 tons of national standard double-zero aluminum ingots (99.73% aluminum content) and 1 ton of 1-series recycled aluminum (99.0% aluminum content) are added to 5 tons of rectangular regenerative melting and holding furnace with refining function and magnetic window, and the melting temperature is 780°C ~810°C, holding temperature 650°C~720°C, and then enter the L-shaped crystallizer through the launder with castables, and add particles with a total weight of 1.02 tons at the entrance of the L-shaped crystallizer at a mass ratio of 83:17 2 ~ 3mm and the specific gravity is greater than 7.3g / cm 3 The ball-milled seed iron material, the aluminum mixed solution flowing out of the crystallizer is cast into a billet shape with a size of 50mm through a continuous casting machine, and the temperature of the outflowing aluminum mixed solution is 520°C, and it is directly semi-hot rolled into alloy ingots and alloy ingots with a double-roll rolling mill After cooling, the ...

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Abstract

The invention discloses a high-aluminum iron alloy deoxidizer and a preparation method thereof. The high-aluminum iron alloy deoxidizer comprises the following components in percentage by mass: 75-83% of an aluminum raw material with low harmful impurity content and 17-25% of counterweight sand, wherein the aluminum raw material with the low harmful impurity content is composed of an aluminum ingot with the aluminum content larger than or equal to 99.70% in the national standard range and 1-series recycled aluminum with the aluminum content larger than or equal to 99.0% in the industrial standard range. On one hand, the process requirements can be met, the recovery rate of aluminum in the high-aluminum-iron alloy deoxidizer is high, and on the other hand, 1-series recovered aluminum with the aluminum content larger than or equal to 99.0% within the industrial standard range is adopted, so that use of the 1-series recovered aluminum can be achieved, the use amount of aluminum ingots can be reduced, cost is saved, waste of the 1-series recovered aluminum is reduced, and environmental friendliness is achieved.

Description

technical field [0001] The invention belongs to the field of smelting and processing of aluminum series products, and in particular relates to a high-aluminum iron alloy deoxidizer and a preparation method thereof. Background technique [0002] The final deoxidation process of steelmaking is one of the key processes of steelmaking. For a long time, pure aluminum ingots, aluminum pellets, low-aluminum 40 aluminum iron, etc. have been used as final deoxidizers. The oxygen reaction reduces the oxygen activity in molten steel, thereby reducing the generation of non-metallic oxidized inclusions. Due to the high processing cost of low-aluminum 40 aluminum-iron produced by intermediate frequency furnace (60% iron needs to be heated and melted to 1600 ℃ and fused with metal aluminum for more than 1 hour, the aluminum loss in the process is large), and there are aluminum products such as pure aluminum ingots and aluminum pellets. Disadvantages such as low aluminum yield and high con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06
CPCC21C7/06Y02P10/20
Inventor 陈涛严翀毛朋郭仁孝卓胜叶清泉杨陶
Owner PANZHIHUA GANGCHENG GROUP