Steelmaking carburizer: with the development of new smelting process mature, in the smelting process, due to improper ingredients or charging and excessive decarburization and other reasons, sometimes resulting in steel carbon content did not reach the requirements of the top period, prompting producers to carburization in liquid steel. The market for steelmaking with carburizer requirements are becoming higher and higher, in order to adapt to the needs of high quality smelting. The commonly used carburizer for steelmaking has carburized pig iron, electrode powder, petroleum coke powder, charcoal powder and coke powder. Existing these steel making with recarburizer in the use of the process have different degrees of defects, mainly steel with recarburizer and water of steel interface compatibility is poor, after adding the use of water of steel, soon float to the surface of the water of steel, can not penetrate the water of steel, so as to easily enter the slag burning loss, resulting in poor carburization effect. Therefore, developing a kind of carburizing agent for steelmaking with good carburizing effect and good interface compatibility with molten steel has become an urgent problem to be solved in the industry.
Aiming at the deficiency of existing technology, a kind of recarburizer for steelmaking has simple components, rich sources, less impurities, great ratio and good compatibility with molten steel, resulting in good steel quality and low defective rate. Steelmaking carburant and its preparation method has the following advantages: 1, the steelmaking recarburizer by many kinds of activated carbon after mixing, processing material after low temperature processing, makes carbon structure more closely, is advantageous to the molten iron in coagulation, temperature increase the crystal nucleus, thereby further improve carburization stability, improve the effect of carbonization; 2, the addition of silicon nitride in the steel carburizing agent, combined with grafting agent treatment, is not easy to enter the slag and burn, improve the carburizing effect, improve the utilization rate of carbon; 3, the use of composite adhesive to change the previous adhesive simplicity, improve the effect of the adhesive, in addition to modified starch by starch, chitosan and iron powder mixed, improve the proportion of organic adhesive, reduce the presence of impurities, and reduce the production cost of steel with carburizer.
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