NX煤质增碳剂 大型钢铁公司铸造用95煤质增碳剂

Introduction of recarburizer

It is an additive that is used in steelmaking. It is an indispensable raw material for the production of steel, and also the raw material for making electrode paste. Recarburizer there are many kinds of raw materials, production process is also different, there are wooden carbon, coal carbon, coke, graphite class, such as recarburizer generally refers to after graphitization of carburant, under the condition of high temperature, carbon atoms arranged in the microstructure of graphite, so called the graphitization, graphitization can reduce the content of impurity in the carburant, improve the carbon content of carburant, reduce sulfur content.

The use of carbon dioxide

Internal input method: it is suitable for smelting in induction furnace, but it is not the same according to the process requirement.

In the smelting of medium frequency electric furnace, the use of a carbon additive, can be added to the lower part of the electric furnace according to the match or carbon equivalent, and the recovery rate can be up to 95.

2, if the lack of carbon adjustment, the first dozen net furnace slag, plus carburant, by raising the temperature of molten iron, or artificial electromagnetic stirring to dissolve carbon absorption, the recovery rate is around 90, if the low-temperature carbonization process, the melt furnace charge only part of the molten iron liquid under the condition of low temperature, all recarburizer one-time in liquid iron, at the same time with solid charge to press it into the liquid iron don't let it show liquid iron surface. This method can increase carbon by more than 1.0 percent.

The carbonization stove:

1, spray graphite powder in the bag; The use of graphite powder is used as a carboloy, and the amount is 40kg/t, which is expected to increase the amount of iron content from 2 to 3. With the carbon content in liquid iron is increased, the utilization rate of carbon, increase carbon before liquid iron temperature of 1600 , an average of 1299 after carburization. Carbon graphite powder spraying, generally by nitrogen as the carrier, but under the condition of industrial production, it is more convenient to use compressed air, oxygen and compressed air combustion produces CO, the chemical reaction heat can compensate part of the temperature drop, and the effect of reducing atmosphere conducive to improve carburization CO.

Use a carbon-based agent when the iron is out; Purpose can be 100-300 graphite powder carburant in package, or from the iron tank with flow into and out of the liquid iron after fully mixing, as far as possible to dissolve carbon absorption, carbon recovery rate is around 50.

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