High Carbon Silicon Is By-product Of Silicon Metal

High carbon silicon is a byproduct generated during the production of metallic silicon, occurring at the furnace bottom and walls due to insufficient temperature and incomplete reaction. It is also commonly referred to as silicon carbon alloy.

Its usage can be restated as follows:

In the past, the types of alloys used in converter steelmaking were consistently fixed with little adjustment. For example, Q195 and Q235 steels used a combination of manganese-silicon alloy, ferrosilicon, silicon-aluminum-calcium-barium, silicon carbide, and recarburizing agents; HRB335 and HRB400 steels used manganese-silicon alloy, ferrosilicon, aluminum-silicon, and recarburizing agents. However, in recent years, manganese-silicon and ferrosilicon resources have become increasingly scarce, and their prices have continued to rise, directly increasing steelmaking costs and squeezing profit margins. Moreover, the recovery rate of these traditional alloys is easily affected by converter operations-slight changes in the tapping rate, final temperature, and slag discharge can cause significant fluctuations in the alloy composition of the finished product, leading to unstable chemical composition of the steel and low pass rates for internal control indicators.

With the emergence of high carbon silicon, more and more steel mills have begun to adopt it. Typically, its particle size requirement is 10–100 mm or 10–60 mm (both accounting for more than 90%), and there are two common compositions: one is silicon ≥65% and carbon ≥15%; the other is silicon ≥68% and carbon ≥18%. In terms of usage, high carbon silicon can be added to the bottom of the converter before the molten steel is poured into it, so that it can melt more fully and faster, thereby improving the alloy's absorption rate and compositional stability.

If you would like to know the price of high cabon silicon, please send to our email: info@kexingui.com or whatsapp: 86-17550895599