Aluminum-calcium deoxidation and desulphurization slag remover for metallurgy

An aluminum-calcium and slag agent technology, applied in the field of metallurgical refining, can solve the problems of reducing the service life of the furnace lining, high burning loss of deoxidizing materials, increasing the production cost, etc., to reduce the temperature drop of molten steel, ensure the service life, and reduce power consumption Effect

Active Publication Date: 2009-07-08
沈阳慧通远达冶金技术研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional refining additives, mostly lime and fluorite-based simple synthetic slag desulfurization, combined with single material deoxidation, slow slag formation, high burning loss of deoxidized materials, poor submerged arc

Method used

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  • Aluminum-calcium deoxidation and desulphurization slag remover for metallurgy

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1 Aluminum-calcium deoxygenation, desulfurization and slag-promoting agent A for metallurgy:

[0021] The parts by weight of each component are calcium carbide 1

[0022] Aluminum calcium alloy + aluminum calcium slag 14

[0023] Silicon calcium alloy + silicon calcium slag 2

[0024] Lime 2

[0025] Aluminum + AD powder 1.

[0026] It is made through the process of selecting materials, crushing, drying, and mixing ingredients.

Example Embodiment

[0027] Example 2 Aluminum-calcium deoxygenation, desulfurization and slag-promoting agent B for metallurgy:

[0028] The parts by weight of each component are calcium carbide 1

[0029] Aluminum calcium alloy + aluminum calcium slag 10

[0030] Silicon calcium alloy + silicon calcium slag 4

[0031] Lime 2

[0032] Aluminum + AD powder 3.

[0033] It is made through the process of selecting materials, crushing, drying, and mixing ingredients.

Example Embodiment

[0034] Example 3 Aluminum-calcium deoxidation, desulfurization and slag-promoting agent C for metallurgy:

[0035] The parts by weight of each component are calcium carbide 1

[0036] Aluminum calcium alloy + aluminum calcium slag 6

[0037] Silicon calcium alloy + silicon calcium slag 6

[0038] Lime or limestone 3

[0039] Aluminum + AD powder 4.

[0040] It is made through the process of selecting materials, crushing, drying, and mixing ingredients.

[0041] Apply the above products A, B, and C on the LF furnace, and the implementation steps are as follows:

[0042] Smelting → tapping → adding metallurgical aluminum-calcium deoxidation, desulfurization and slag-promoting agent at the refining position → continuous casting, the data obtained are as follows:

[0043] Average amount added to tapping Desulfurization rate Deoxidation index ∑(FeO)+(Mn...

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Abstract

The invention provides an aluminum calcium deoxidization desulfuration slagging agent for quick deoxidizing, quick desulfurizing, removing foreign matters in molten steel and effectively improving inherent quality of steel in metallurgy.The main technical point is that weight parts of each component are calcium carbide of 1, calcium-aluminum alloy and calcium-aluminum slag of 6-14, calcium-silicon alloy and calcium-silicon slag of 2-6, lime or iimestone of 1-6, aluminum and AD powder of 1-4.According to the invention, process steps of material selecting, pulverizing, drying, ingredient mixing and the like are performed according to the above matching, production processes of LF(VD), CAS, RH and the like can be all adapted, therefore, technique effects of shortening the refining operation period, reducing material consumption of deoxidization, accelerating slag forming speed and arc burying speed, reducing electricity consumption and reducing temperature of molten steel; by replacing CaF2 by CaC2, the furnace liner is protected effectively, service life of the furnace liner can be assured, and the production cost can be reduced. The preparation method of the invention is simple and the deoxidization and desulfuration guideline of the product exceeds that of the existing product.

Description

technical field [0001] The invention belongs to the technical field of metallurgical refining, in particular to an aluminum-calcium deoxidizing and desulfurizing slag accelerator agent for metallurgy. Background technique [0002] Refining is an important part of modern steelmaking production. In the production process of LF (VD), CAS, and RH processes, some specific materials are added to achieve functions such as deoxidation, desulfurization, and removal of inclusions, and it is also conducive to improving the yield of alloys. Doing a good job in the refining process is of great significance for reducing the refining load outside the furnace, improving the internal quality of steel and reducing production costs. Traditional refining additives, mostly lime and fluorite-based simple synthetic slag desulfurization, combined with single material deoxidation, slow slag formation, high burning loss of deoxidized materials, poor submerged arc, large cooling of molten steel, and ...

Claims

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Application Information

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IPC IPC(8): C21C7/04C21C7/06C21C7/064
Inventor 王勇田鹏
Owner 沈阳慧通远达冶金技术研发有限公司
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