Method for obtaining high particle size carburant through by-product of graphitization furnace

Abstract

The invention discloses a method for obtaining a high particle size carburant through a by-product of a graphitization furnace. The method comprises the following steps: crushing, screening, stock binloading, mixing, preparation before charging, charging, graphitization, collecting carburant crude products, preliminary sieving, sieving and recycling; on the premise that the product quality of a negative electrode material is not affected, the same heat preservation effect is achieved by adding certain volume ratio of calcined coke with the particle size being (2-6)mm into a graphitization furnace heat preservation material, and a calcined coke by-product with increased particle size can be obtained. The carburant meeting the requirements of steelmaking carburants and having a recarburization effect can be obtained through the simple sieving of the by-product, moreover, a sieved small particle size carburant fine powder can be recycled, the production cost is greatly reduced, the production process is simple, and the yield is high. Through the method, a single carburant processing process is not required, so that exhaust emission is reduced, and the method is beneficial to environmental protection.

Description

technical field [0001] The invention relates to the field of carburizer preparation, in particular to a method for obtaining a high particle size carburant by using a by-product of a graphitization furnace. Background technique [0002] In the process of using an electric furnace to smelt molten iron, due to the use of a large amount of iron filings, it is often necessary to increase the carbon content of the molten iron by adding a large amount of recarburizer into the electric furnace to meet the carbon content requirements of the product. At present, in the steelmaking production process of domestic metallurgical enterprises, they will use carburizers as an auxiliary material to extract carbon from molten steel in varying degrees, so that the carbon content in molten steel can meet the composition requirements of steel grades. The types of recarburizers currently available include: pig iron, coal-cut recarburizer, coke powder recarburizer, pitch coke agent, graphite elect...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for obtaining a high particle size recarburizer by using the by-products of a graphitization furnace, so as to solve the problem that the recarburizer requires a complex production process, low output, serious environmental pollution during the production process, and too small particle size of the recarburizer , it is not easy to add into the molten iron and thus cannot play a good carburizing effect