China Supply High Quality Ferro Silicon /Ferro Silicon Manganese

Brief introduction:

Silicomanganese alloy is composed of manganese, silicon, iron and a small amount of carbon and other elements. Silicomanganese alloy is a compound deoxidizer commonly used in steelmaking.

In the process of converter smelting low-silicon low-carbon steel, need to carry out deoxidation and alloying, make that the mass percent of each Chemical Composition reaches following requirement in the molten steel: carbon≤0.10% molten steel; Silicon≤0.03%; Phosphorus≤0.02%, sulphur≤0.03, manganese 0.35-0.60%.Therefrom can find out, in above-mentioned steel grade, because the content of silicon is quite low; So; In the prior art, the alloy of deoxidation and alloying avoids adopting the material that contains silicon, adopts the material as deoxidation and alloying such as aluminium manganese titanium, aluminium manganese calcium, aluminum steel and mid-carbon fe-mn usually.Though the material of mentioned kind has the performance of deoxidation alloying, because the aluminum content of aluminium manganese titanium, aluminium manganese calcium and aluminum steel is higher, at the material that in molten steel, no matter adds that a kind of deoxidation and alloying; After aluminium wherein and the oxygen in the molten steel react; All generate more a large amount of aluminium sesquioxides, and the aluminium sesquioxide viscosity is bigger, is difficult for from molten steel, floating getting in the slag; It is trapped in the molten steel and promptly the refining program is impacted, and also can influence molten steel simultaneously and when cast, flow smoothly; Though described mid-carbon fe-mn does not contain a large amount of aluminium, also can adjust the composition range that steel interalloy constituent content reaches institute's steelmaking kind specification, its cost is high especially, and then improves the cost of smelting steel.

silicon is reductor the most basic in the steel, when smelting ordinary steel, adopts silicon as reductor usually.Being called the mass percent that proposes this ferrosilicon Chemical Composition in " a kind of si-Mn deoxidized steel refining deoxidation alloying is with ferrosilicon and method of use thereof " like Chinese patent 101993978A number disclosed name is: silicon greater than 96% with micro-aluminium, phosphorus, sulphur, nitrogen, all the other are the deoxidation alloying material of iron.Its meaning is aluminium and the nitrogen that reduces after wanting to utilize ferrosilicon to the steel liquid deoxidation alloying in the steel.Because the content of silicon is quite high in the ferrosilicon, though it can be used as the ideal reductor, silicon can keep higher content in steel; And the silicone content height can reduce the plasticity and the toughness of steel; So this kind reductor reaches and only is suitable for smelting ordinary steel, is not suitable for smelting the low-silicon low-carbon steel grade.

In china, the average consumption of steel consumption per ton of silicon manganese alloy about 25 kg, guimeng alloy itself is in the process of iron and steel smelting ferrosilicon as substitute of deoxidizer, guimeng alloys can be solid, and can increase of manganese content in steel, improve the strength of steel, and therefore the amount of silicon manganese alloy used as deoxidizer continues to increase.