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Silicon carbon alloy (also called high carbon silicon) is a new type of alloy with stable and reliable performance used in converter steelmaking. Customers choose to purchase silicon carbon alloys mainly to replace ferro silicon, silicon carbide and recarburizers. Silicon carbon alloys can significantly reduce steelmaking costs, increase economic benefits, improve steel’s quality & properties, and reduce the total amount of alloy added.

The background of silicon carbon alloy

For a long time, the alloy formula for converter steelmaking has been relatively simple: Q195 and Q235 type steels use SiMn + FeSi + BaSiAlCa + SiC + Recarburizers, HRB335 and HRB400 type steels use MnSi + FeSi + AlSi + Recarburizers. With the increasingly tight supply of ferro silicon, silicon manganese and the increase in market prices, the cost of converter steelmaking has gradually increased, and the profit margin of steel has gradually decreased. On the other hand, the recovery rate of traditional alloys in converter steelmaking is not stable, so that the alloy content in the finished steel fluctuates greatly, and the qualification rate of various indicators of the steel is low.

In steelmaking, silicon carbon alloy (high carbon silicon) is used to replace ferro silicon, silicon carbide, and recarburizers. The effect is stable and the amount of deoxidizer can be reduced. The chemical composition, mechanical properties and internal control quality of the finished steel are better than traditional technology, so more and more steel mills are beginning to use high carbon silicon as a deoxidizer.

Packaging: 1 Ton Jumbo bag

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Silicon carbon alloy usage scenarios

1. When the molten iron temperature is low, the carbon content is low, and the silicon content is low, the silicon carbon alloy is added together with the scrap steel.
2. If there is too much scrap steel, in order to ensure the production of high carbon steel, silicon carbon alloy can be added to ensure the carbon content, while stabilizing the temperature of the molten iron.
3. Due to scheduling and equipment failures, low carbon and low temperature, silicon carbon alloy can be added.

Silicon carbon alloy use effect

1. It can replace ferro silicon and recarburizer, and the amount of FeSiAl is also reduced, which can effectively reduce steelmaking costs.
2. Smelting ordinary carbon steel, special steel and some low alloy steel, the recovery rate of each effective element is stable.
3. Silicon carbon alloy is a high quality deoxidizer with stable steelmaking performance.
4. Substitute recarburizers, reduce steelmaking costs and increase economic benefits.
5. High carbon silicon is a good substitute for ferrosilicon in steelmaking and has the advantage of reducing manufacturing costs.

The use effect of silicon carbon briquette

The carbon in the silicon carbon briquette ball has a graphite crystal structure. Its dissolution temperature in molten steel is low, and its absorption rate is 95% at 1420°C (the absorption rate of metallurgical coke with amorphous structure is only 70% at 1520°C). The ball has a good carbon increasing effect. In addition, the silicon-carbon ball has a strong reducing ability, which alleviates the loss of the alloy elements in the steel due to oxidation, and improves the alloy recovery rate.