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| Advantages and selection precautions of coal carbonization agents in Chinese and English translation |
| 2023-06-04 15:34:13 Number of visits：1848 |
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Advantages of coal based carburetors:
1. Generally, high-quality anthracite is selected as the raw material, and high-quality anthracite is used as the raw material. After reducing the ash content and overheating treatment process, the quality of coal based carburant is excellent, which is very suitable for the steel smelting industry;
2. In the iron and steel smelting industry, the preferred particle size of coal based carburetor is 3-10mm, and its effect is comparable to that of pitch based carburetor; The specific particle size requirements are generally determined based on the size of the steel furnace used for smelting.
3. Adding coal based carburetors during the steelmaking process will not have any impact on the chemical composition, total amount of inclusions, mechanical properties of grain size, etc. of the steel, and the quality of the produced steel is very guaranteed;
4. In the steel smelting industry, the use of coal based carburetors can to some extent reduce steelmaking costs, reduce energy consumption, and have good economic and social benefits,
Precautions when purchasing carburetors:
1. Choose a carburetor that has undergone graphitization treatment under high temperature conditions, as the higher the temperature, the easier it is to remove impurities from the carburetor. The sulfur and nitrogen content will also decrease with the increase of temperature, while the fixed carbon content will increase; The higher the degree of graphitization, the faster the absorption rate of the carburizing agent, the better the absorption situation, and the faster the dissolution rate, which is beneficial for reducing energy consumption and effectively increasing the nucleation core of molten iron. Improving metallurgical quality;
2. Choose a carburetor with less sulfur content, nitrogen content, and other impurities. The sulfur content and nitrogen content exist in direct proportion,. During the smelting process, if the nitrogen content of gray iron liquid is higher than the equilibrium concentration, it is easy to generate crack like nitrogen pores, while ductile iron liquid is prone to shrinkage defects in the thick wall part. Moreover, if the impurity content is high, the purity of the resulting castings will also be affected;
3. According to different purposes and methods of use, selecting the appropriate particle size of carburizing agent can effectively improve the absorption rate of carburizing agent in molten iron to a certain extent, thereby better meeting the needs of carburizing agent in the smelting process.
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