Aluminum-silicon-manganese-iron compound deoxidizer for steel making

A technology of composite deoxidizer, aluminum silicon manganese ferromanganese, which is applied in the field of composite deoxidizer, can solve the problems of large amount of aluminum consumption and high cost, and achieve the effects of stable steelmaking quality, reduced steelmaking cost and low melting point

Inactive Publication Date: 2012-12-26
上海中捷有色金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention is to overcome the shortcomings of using metal aluminum for complete deoxidation in the prior art

Method used

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  • Aluminum-silicon-manganese-iron compound deoxidizer for steel making
  • Aluminum-silicon-manganese-iron compound deoxidizer for steel making
  • Aluminum-silicon-manganese-iron compound deoxidizer for steel making

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Composition in weight percentage (%) of aluminum silicon manganese ferromanganese composite deoxidizer for steelmaking:

[0044] Al 29.8%;

[0045] Si 20.1%;

[0046] Mn 20.0%;

[0047] Fe 30.0%;

[0048] The balance is unavoidable impurities.

[0049] The preparation method is as follows: firstly mix aluminum ingots, ferrosilicon, silicon-manganese and scrap steel according to certain proportions and procedures, then melt them in an intermediate frequency electric furnace, die-cast them, and after the molds are cooled, they can be packaged after passing the analysis and inspection.

[0050] The specific gravity of the ferrosilicon-manganese composite deoxidizer for steelmaking obtained in this example is: 3.9g / cm 3 , the melting point is: 820 ~ 825 ℃.

[0051] The ferrosilicon-manganese composite deoxidizer for steelmaking obtained in this example has high strength, low crushing loss during transportation and loading and unloading, and is not easy to pulverize. Du...

Embodiment 2

[0053] Composition in weight percentage (%) of aluminum silicon manganese ferromanganese composite deoxidizer for steelmaking:

[0054] Al 41.2%;

[0055] Si 18.1%;

[0056] Mn 19.0%;

[0057] Fe 21.6%;

[0058] The balance is unavoidable impurities.

[0059] The preparation method is as follows: firstly mix aluminum ingots, ferrosilicon, silicon-manganese and scrap steel according to certain proportions and procedures, then melt them in an intermediate frequency electric furnace, die-cast them, and after the molds are cooled, they can be packaged after passing the analysis and inspection.

[0060] The specific gravity of the aluminum silicon manganese ferromanganese composite deoxidizer for steelmaking obtained in this embodiment is: 4.1g / cm 3 , the melting point is: 825 ~ 835 ℃.

[0061] The ferrosilicon-manganese composite deoxidizer for steelmaking obtained in this example has high strength, low crushing loss during transportation and loading and unloading, and is not...

Embodiment 3

[0063] Composition in weight percentage (%) of aluminum silicon manganese ferromanganese composite deoxidizer for steelmaking:

[0064] Al 40.47%;

[0065] Si 16.9%;

[0066] Mn 19.6%;

[0067] Fe 22.88%;

[0068] C 0.014%;

[0069] P 0.036%;

[0070] S 0.001%;

[0071] Cu 0.014%;

[0072] Pb 0.036%;

[0073] Zn 0.049%.

[0074] The preparation method is as follows: firstly mix aluminum ingots, ferrosilicon, silicon-manganese and scrap steel according to certain proportions and procedures, then melt them in an intermediate frequency electric furnace, die-cast them, and after the molds are cooled, they can be packaged after passing the analysis and inspection.

[0075] The specific gravity of the ferrosilicon-manganese composite deoxidizer for steelmaking obtained in this example is: 4.0g / cm 3 , The melting point is: 825 ~ 830 ℃.

[0076]The ferrosilicon-manganese composite deoxidizer for steelmaking obtained in this example has high strength, low crushing loss during...

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Abstract

The invention relates to an aluminum-silicon-manganese-iron compound deoxidizer for steel making. The compound deoxidizer for steel making comprises the following chemical components (wt%): 28-45% of Al, 15-25% of Si, 15-25% of Mn, 19-31% of Fe and inevitable impurities. The preparation method of the compound deoxidizer for steel making comprises the following steps: proportioning aluminum ingots, ferrosilicon, silicomanganese and scrap steel according to a certain ratio and procedure; then melting in a medium-frequency electric furnace; performing mold casting; demolding, cooling, and then packaging after the product is qualified through an analytical test. The compound deoxidizer is high in aluminum-silicon-manganese-iron alloy strength, has a low breaking loss rate in the use processes of transportation, loading and unloading, has a low chalking possibility and is used for the steel making process; because of the big specific gravity and low melting point, the deoxidizing effect is good in a smelting test, so that the operation in the steel making process is simplified; and under the condition of keeping the stable quality of the made steel, the steel making cost is lowered, and the amount of aluminum is saved.

Description

technical field [0001] The invention belongs to the technical field of composite deoxidizers in iron and steel metallurgical industrial production, and in particular relates to a composite deoxidizer used for steelmaking. Background technique [0002] The aluminum-saving compound deoxidizer is a new type of deoxidizer for steelmaking, and it is a series of products. The steelmaking industry in my country has been using metal aluminum for complete deoxidation for a long time. With the development of the steelmaking industry, the consumption of metal aluminum is increasing. For example, the metallurgical system in Shanghai alone consumes more than 3,000 tons of metal aluminum as a deoxidizer for steelmaking every year. my country's aluminum resources are quite scarce, and it is difficult to To meet the needs of the steelmaking industry, it is urgent to find an aluminum-saving material to meet the needs of the steelmaking industry. [0003] In modern steelmaking production, mos...

Claims

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Application Information

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IPC IPC(8): C21C7/06
Inventor 潘建中蒋光华
Owner 上海中捷有色金属有限公司
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