Manufactur standard FeMn - The applications of different recarburizers – Yunai


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Manufactur standard FeMn - The applications of different recarburizers – Yunai Detail:

Carburizer is a chemical material that can effectively improve the carbonization effect of materials and the metallurgical environment. There are many carburizers used in the iron and steel industry. Different recarburizers for different purposes have different effects.

1. Artificial graphite recarburizer
The main raw material of artificial graphite is powdered calcined petroleum coke, in which pitch (or pure organic pregelatinization) is added as a binder, and a small amount of other auxiliary materials are added. With various raw materials, it is pressed and formed, and then processed in a non-oxidizing atmosphere at 2500-3000 ° C to make it graphitized. After high temperature treatment, the content of ash, sulfur and gas is greatly reduced.

Due to the high price of artificial graphite products, most of the commonly used artificial graphite recarburizers use recycled materials such as chips, waste electrodes and graphite blocks when manufacturing graphite electrodes in foundries to reduce production costs. When smelting ductile iron, in order to make the metallurgical quality of the cast iron superior, the recarburizer should be artificial graphite.

Application of graphite recarburizer: Graphite recarburizer can improve the metallographic structure of castings, quickly generate graphite core in cast iron, shorten the carbonization time, and improve the carbonization effect.

2. Petroleum coke recarburizer
Petroleum coke is a widely used recarburizer, and petroleum coke is a by-product of crude oil refining. The residual oil and petroleum pitch obtained by pressurized or vacuum distillation can be used as raw materials for the manufacture of petroleum coke, and petroleum coke can be obtained after coking. The output of raw petroleum coke is less than the amount of crude oil, and the impurity content of raw petroleum coke is high, so it cannot be directly used as a carburizer and must be calcined first. Green petroleum coke has spongy, needle, granular and fluid shapes.

Application of petroleum coke recarburizer: Petroleum coke recarburizer can effectively increase the furnace temperature, it can not only increase the furnace temperature, but also improve the metallurgical yield, improve and improve the harsh metallurgical environment.

3. Coke and Anthracite
The applications of different recarburizers (1)
In the electric arc furnace steelmaking process, coke or anthracite can be added as a recarburizer. Induction furnace smelting cast iron is rarely used as a recarburizer due to its high ash and volatile content. The calciner is calcined with anthracite, and the calcination temperature is 1200-1300. Black granular, metallic luster, fixed carbon 85-93, moderate sulfur and nitrogen content.
Use of calcined coal recarburizer: The purpose of calcined coal recarburizer is to effectively increase carbon and shorten the carbonization time. The use of calcined coal recarburizer can effectively save time.


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Manufactur standard FeMn - The applications of different recarburizers – Yunai detail pictures

Manufactur standard FeMn - The applications of different recarburizers – Yunai detail pictures


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