Aluminum-calcium deoxidation and desulphurization slag remover for metallurgy

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 ...

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, large cooling of molten steel, and serious loss of slag wire; The main component of stone is CaF 2 , it seriously corrodes the furnace lining, reduces the service life of the furnace lining and increases the production cost

Images