China 10-50mm high carbon silicon

At present, in the process of steelmaking production at home and abroad, in addition to being used for alloying, a considerable part of ferroalloy is consumed as a deoxidizer. With the increase in the proportion of converter steelmaking, the improvement of electric furnace and open hearth furnace smelting process, and the increase in oxygen consumption, the proportion of ferroalloy consumed as a deoxidizer has increased (the recovery rate of ferroalloy has decreased). It is uneconomical and unscientific to use expensive iron alloys as deoxidizers. For another example, binary and multi-component composite alloys are widely used in the refining, deoxidation, desulfurization and inclusion shape control of many steel types at home and abroad, improving the quality of steel and improving the mechanical properties of steel. However, due to the high cost of these composite alloys compared with high carbon silicon High carbon ferro silicon, their use is limited. Especially after a large number of billet continuous casting machines have been put into production in my country, how to rationally apply calcium-based composite alloys has become an important issue. It will be of great value if a deoxidizer with low cost and good deoxidation performance can be developed to replace composite alloys and some ferroalloys.

High carbon silicon is a kind of composite deoxidizer with high cost performance. It is easy to use, does not require a large amount of investment and strict process requirements like refining outside the furnace, and has good deoxidation performance, which can replace deoxidizers such as ferrosilicon alloys.

The silicon element Si in high-carbon silicon has the ability to deoxidize and desulfurize, and C has the ability to increase carbon and deoxidize. The purpose of containing these two substances in the deoxidizer is to improve the quality of steel. High-carbon silicon utilizes the characteristics of silicon and carbon elements to develop the good effect of carbon elements in the deoxidation process, and obtain a composite deoxidizer based on elements with strong affinity between silicon, carbon and oxygen. It has a strong deoxidizing ability. Since high-carbon silicon is mainly composed of Si, C, etc., the deoxidized products generated are easy to float up and get rid of, do not pollute the molten steel, and can prevent the harmful effects of inclusions such as Al2O3, and also have a certain ability to remove S and P. In addition, the Si content in this deoxidizer is high, and it can completely replace the current ferrosilicon alloy that consumes a lot of energy, is difficult to produce, and is expensive.