Silicon carbide deoxidizer

Precautions for using silicon carbide deoxidizer in electric furnace smelting
1. The amount of pig iron in the charge should be well controlled, preferably around 10%, and the best ratio of smelting silicon carbide with the addition of the charge is between 40-55%.
2. The appropriate silicon carbide particles should be selected in the iron tapping process, and the amount added should be 0.1-0.2% more than that of the cupola smelting (different manufacturers should summarize on-the-spot investigations).
3. Instantaneous inoculation during pouring
4. When producing high-quality castings, it is best to add metallurgical silicon carbide to the furnace for pretreatment before tapping. After a lot of experiments, it is very meaningful to conclude that the application of silicon carbide deoxidizer in electric arc furnace is very meaningful. The following will introduce the method of adding: the furnace size of the experiment is 5t electric arc furnace, the furnace shell is 3450mm, the average tapping amount is 12t/t, Smelting steel grade 20Mnsi, adding method: after the oxidation is completed, remove the oxide slag, add lime and other slag and some alloys. Send it into the electric furnace, wait for the slag material to melt, and the slag liquid is formed, and then start adding silicon carbide deoxidizer. For better production, to avoid the increase of silicon carbide caused by direct contact between silicon carbide and carbon powder and molten steel, the order of counting: add carbon powder first , then add silicon carbide deoxidizer, and then add reducing agent. As for how much to add, I will not explain the specifics, because many manufacturers have different sizes of furnaces, and it is the best way to improve production efficiency that requires specialized technical personnel to cooperate with them.