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Deoxygenation properties of metallic silicon powder
- 2019-03-30-

Metallic silicon powder, can also be called Coke, Gioge, Coke block. When coal is heated to more than 850 ℃ in the boiler furnace, with the increase of temperature, the organic matter in coal decomposes, in which the volatile product escapes, the residual non-volatile product is Coke. These include fixed carbon and combustion residues that can be burned-ash. When burned, a short blue flame is emitted and a large amount of heat is released. The combustion process is slow and persistent, and it is easy to form gray shells on the surface. Coke is mainly used for ironmaking, which accounts for about 1/2~1/3 in the production cost of pig iron.

Metallic Silicone PowderThe main ingredients are fixed carbon, few volatile, smoke-free when burning. The calorific value is about 25104 Kj/kg-31380 kJ/kg. Silver or grayish black, with metallic luster, hard porous. Large chunks are called Block Coke or metallurgical coke, small chunks are called shredded coke, and powders are called Coke crumbs. In the production of Ferroalloy, Coke is used as reducing agent, which requires the higher the fixed carbon of coke, the better, the less ash, the better. Its granularity has a great influence on smelting. Large granularity of coke, less than resistance, strong conductivity, electrode insertion is difficult, electric furnace heat loss increased, granular coke reaction surface is also small, reduction capacity is reduced accordingly, so large grain coke into the furnace will worsen the furnace condition. Small granularity of coke, larger than resistance, large contact surface, will make the electrode deep plug, less heat loss, but the grain through small and will reduce the breathability of the furnace, resulting in thorn fire collapse material.

Therefore, Coke should have a certain degree of appropriate granularity. The size of its granularity is related to the capacity of the furnace, the coke size of the large electric furnace is larger, and the coke size of the small electric furnace is small. In the smelting process, the water content in Coke should be checked regularly, and the ratio of furnace charge should be corrected so that the furnace condition is normal.

Metal silica powder is one of my company's main products, by my company to provide a full range of metal silica powder, reliable quality, reasonable price, to meet the needs of the vast number of users of metal silica powder. Although, after a period of development, the understanding and understanding of metal silica powder more and more people, metal silica powder application range is also expanding, but because of the function of metal silica powder, we do not have a comprehensive understanding of metal silica powder, in view of such a situation, our company will summarize the understanding of metal silica powder over the years, Let me give you a brief introduction.Nano Silicone PowderDeoxygenation performance.

In the actual production process, metal silica powder plays a role in replacing ferrosilicon, reducing production cost and improving casting quality in castings. SiC reacts with oxygen in liquid slag phase or liquid metal, strongly releasing a large amount of combustion heat, because the formation of the SiO2 in this case quickly escape, strengthening the kinetic conditions of the reaction, this characteristic is very helpful to the deoxygenation process. Both the Si and C contained in SiC have the potential to be oxidized, and when the temperature is the same, the potential of the two is approximately the same, so SiC is not only a cold wind cupola, but also a good deoxidizer for hot air cupola. Because of the strong ability of SiC to reduce metal oxides in the furnace, the negative interference caused by bad conditions can be greatly improved. The deoxidizing effect of SiC is more than FeSi. Because of the FeSi deoxygenation, oxide SiO2 and FeO were re-formed, increasing the oxygen content in the iron solution.

The deoxygenation performance of silicon carbide in the foundry industry is mentioned here, I hope you can not only understand the deoxygenation performance of silicon carbide, but also deepen the understanding of silicon carbide. Of course, silicon Carbide also has other properties, if you are interested in this area, want to know more about, you can contact with my company. Want to buy high-quality silicon carbide, you can call the hotline directly to discuss cooperation.