High carbon silicon /silicon carbon alloy

High carbon silicon production process

In the process of smelting metal silicon, there is a case where the electrodes are not uniformly heated in the furnace. As a result, the furnace bottom fails to reach the optimum temperature required to produce metal silicon. A small amount of raw materials such as silica and carbon at the bottom did not fully react. After a long period of accumulation under high temperature conditions, it forms a block on the bottom of the furnace.

These large (stable traits) chunks are broken and screened, which is what we often call high carbon silicon.

High carbon silicon characteristics and uses

Current market

Alloys for converters have not been adjusted for a long time. The structure of traditional alloys is relatively simple. Q195 and Q235 steels adopt Mnsi+FeSi+SiAiCaBa+Sic+recarboration process. HRB335 and HRB400 steel grades adopt MnSi+Fesi+AiSi+ recarburizer production process.

The traditional silicon-manganese alloy, the market price has climbed all the way. This makes the cost of converter steelmaking gradually increase. Reduce the profitability of steel. And the recovery rate of traditional alloys is often affected by the operation of the converter. The amount of steel produced, the amount of slag, etc., make the alloy composition in the finished product fluctuate greatly. The chemical composition of the smelting steel is unstable. The qualified rate of finished product internal control indicators is low.

High carbon silicon properties

Silicon-carbon alloy is a new type of alloy material. It can replace the expensive deoxidizer ferrosilicon. It is suitable for deoxidation during the smelting of general steel, alloy steel and special steel. It has the following characteristics:

1. Oxidation should shorten the reduction time compared with ferrosilicon powder and carbon powder. Reduce power consumption. Improve labor productivity.

2. The decomposition and oxidation of silicon-carbon alloys is an exothermic reaction process . The positive pressure in the furnace is strong. It can provide the necessary conditions for deoxidation and sulphur. Reduce the sulfur content.

3. The reduction period is shortened. Reduces the chance of inhalation of molten steel in the later stage. Reduce the growth of the H element and return to P. The quality of the molten steel is guaranteed.

4. Reduce the amount of quicklime and fluorite powder added. cut costs. Reduce the concentration of harmful gases and smoke and pollute the environment. Conducive to the improvement of operating conditions.

5. Foam slag is rich and active. At the same time, the bubble is wrapped with arc yellow to reduce arc radiation. Improve the life of the lining and the furnace cover. Reduced thermal shutdown time and consumption of auxiliary materials.

High carbon silicon can be used in the replacement of ferrosilicon and other alloys.

In converter steelmaking, high-carbon ferrosilicon can replace ferrosilicon, silicon carbide, and recarburizer. Reduce the amount of deoxidizer, the effect is stable.

Practice has shown that high carbon ferrosilicon can greatly reduce the cost of steel making. Created considerable economic benefits. Improve the market competitive advantage of steel.