Recarburizers are divided into recarburizers for steelmaking and petroleum coke recarburizers for cast iron, and some other additives are also useful as recarburizers, such as additives for brake pads, as friction materials. Recarburizers belong to the raw materials for adding recarburization for steelmaking and ironmaking. High-quality recarburizer is an indispensable auxiliary additive for the production of high-quality steel. Carbon fiber spun pitch

There are many kinds of raw materials for recarburizers, and the production processes are also different. It is not said that graphite powder is used for compression molding. This production method requires the addition of too much binder for molding, and the carbon content generally does not meet the requirements of high-quality recarburizers. The compressed graphite powder, because it is a solid block, has no porous structure, so the absorption speed and absorption rate are not as good as calcined, roasted and shaped recarburizers. High-quality recarburizer generally refers to a recarburizer that has undergone graphitization. Under high temperature conditions, the arrangement of carbon atoms is in the microscopic form of graphite, so it is called graphitization. Graphitization can reduce the content of magazines in the recarburizer, increase the carbon content of the recarburizer, and reduce the sulfur content.

The emerald green hydrogen-based steelmaking for low-carbon and environmentally friendly steelmaking is immediately restored: Because today’s steelmaking lines have low potential for recovery and development, it is particularly important to achieve this overall goal for pioneering operations. Hydrogen-based steelmaking is the completion of CO2 lean steelmaking. One of the ways. Therefore, immediate restoration (DR) based on gas (NG) is the basis of this change. The aspect ratio coordination capability of this line allows for the gradual addition of radon gas. In the long run, pure radon gas is used to operate the whole process. Carry out calculations based on the physical model to assess the probability of introducing radon gas.

Therefore, a physical model of disaster restoration based on gas and radon was developed and designed to establish a new production process, and to evaluate this process from the perspective of energy supply, carbon dioxide energy saving and emission reduction development potential. Studies have shown that the lines of hydrogen have shown great development potential for emerald green steelmaking, which to a very large extent lies in the carbon emissions of the power engineering used to produce hydrogen. Only when the carbon compressive strength is less than 120 grams of carbon dioxide (kWh-1), the carbon dioxide consumption of the hydrogen-based processing technology will be less than that of the gas-based DR processing technology. Calcined coke recarburizer

Carbon promotion outside the furnace:

1) Spray graphite powder in the bag

It is hoped that graphite powder will be used as a recarburizer to increase the carbon content of molten steel from 2% to 3%. As the carbon content of molten steel gradually increases, the carbon usage rate decreases. The molten iron temperature before carbonization is 1600°C, and the average temperature after carbonization is 1299°C. The introduction of graphite powder to improve the carbon composition generally uses N2 as the medium. However, under the industrial production standard, it is more convenient to apply air compression. The CO2 in the air compression is ignited to form CO. The chemical change heat can compensate a part of the reduced concentration and is beneficial to the atmosphere of reducing CO.

2) Apply recarburizer when attacking iron

Wash with the water in the tapping tank, and mix it fully after tapping the molten steel to dissolve, digest and absorb as much carbon as possible. The carbon utilization rate is about 50%.

Used for castings, pig iron, steel castings and castings must be carbon, so, to put it bluntly, the recarburizer is to increase the carbon content in the molten iron. For example, the common raw materials for melting furnaces in smelters are cast iron, scrap steel and recycled raw materials. Cast iron has a high carbon content, but the purchase price is higher than scrap steel. Therefore, increasing the total amount of scrap steel, reducing the total amount of cast iron, and adding recarburizer can reduce the cost of castings.