Now the manufacturer will introduce to you how to use petroleum coke recarburizer correctly. When using the recarburizer, try to put the recarburizer in the middle and lower part of the furnace, and add other charge on it, so as to reduce the overflow of the recarburizer and increase the contact surface between the recarburizer and the molten iron. Improve carbon efficiency. If the recarburizer is used in a relatively large furnace, it should be added in multiple times, so as to better increase the dissolution rate of the graphitized recarburizer and increase the absorption rate. At the same time, the recarburizer is placed at the bottom of the furnace, which can also buffer the impact on the bottom of the furnace when iron is added. This can also protect the role of the furnace lining. The recarburizer is used in casting, which can greatly increase the amount of scrap steel, reduce the amount of pig iron or eliminate the need for pig iron. So when we use it, we should use it correctly so as to better reduce costs. Carbon fiber spun pitch
Recarburizers can greatly affect the quality of castings by affecting the quantity and shape of graphite. When there are higher requirements for the quality of castings, the value of recarburizers cannot be completely compared by the price of unit recarburization. The use of recarburizers causes the molten iron to have a large tendency to whitish, and it is easy to appear bad graphite morphology.
The use of recarburizers is mainly to improve the quality of casting products and increase the quality of products. Proper use can eliminate or reduce the white mouth tendency of thin-walled castings and the shrinkage tendency of thick-walled castings. Choosing a high-quality recarburizer is a prerequisite. In addition, the stability of the casting can be improved when the method of use and the amount of use are proper, thereby reducing production costs and improving product quality.
The recarburization process using the recarburizer includes the dissolution diffusion process and the oxidation loss process. The particle size of the recarburizer is different, the dissolution diffusion rate and the oxidation loss rate are also different. The absorption rate of the recarburizer depends on the combined effect of the dissolution and diffusion rate of the recarburizer and the oxidation loss rate: in general, the recarburizer particles are small, the dissolution rate is fast, and the loss rate is large; the recarburizer particles are large, The dissolution rate is slow, and the loss rate is small. The choice of the particle size of the recarburizer is related to the diameter and capacity of the furnace. Under normal circumstances, if the diameter and capacity of the furnace are large, the particle size of the recarburizer should be larger; on the contrary, the particle size of the recarburizer should be smaller. For electric furnace smelting crystalline graphite below 1t, the particle size of crystalline graphite is required to be 0.5～2.5mm; for 1t～3t electric furnace to smelt the crystalline graphite particle size is 2.5～5mm; for 3t～10t electric furnace to smelt the crystalline graphite particle size requirement is 5.0～20mm; the crystalline graphite covered in the ladle is required to be 0.5 ~1mm.