Carbon manganese balls and preparation method thereof and continuous casting smelting process for high or medium carbon steel converter

Abstract

The invention discloses carbon manganese balls and a preparation method thereof and a continuous casting smelting process for a high or medium carbon steel converter, and belongs to the technical field of steelmaking. The invention aims to solve the problems of long melting time of common carburant, low carbon yield and difficult molten steel component control. The carbon manganese balls are prepared from the following raw materials in percentage by weight: 50 to 53 percent of high carbon ferromanganese powder, 40 to 43 percent of carbon powder, and 5 to 7 percent of bonding agent, wherein the high carbon ferromanganese powder contains 6 to 10 weight percent of carbon and 70 to 77 weight percent of manganese; the carbon powder contains more than or equal to 82 weight percent of carbon; the bonding agent is a bonding material and contains the following components in percentage by weight: 5 to 9 percent of polyanionic sodium cellulose, 63 to 67 percent of Guangxi white clay, 13 to 17 percent of dextrin, and 11 to 15 percent of sodium carbonate. The carbon manganese ball preparation method is simple, has short melting time and high yield of carbon and manganese, is easy to control the molten steel components, simplifies the steelmaking process, and saves energy.

Description

technical field [0001] The invention belongs to the technical field of steelmaking, and in particular relates to a carbon-manganese sphere, a preparation method thereof, and a converter-continuous casting smelting process for high- and medium-carbon steel. Background technique [0002] With the development of the iron and steel industry, the iron and steel industry has put forward higher and higher requirements for steelmaking productivity and steel cost. At present, most steel mills use the carburizing process to smelt high- and high-carbon steel, and the steel tapping carbon at the end of steelmaking is controlled below 0.10%. Carburizing, but due to the light specific gravity of the carburizing agent, most of the carburizing agent will float on the surface of the molten steel during the tapping process, resulting in the incomplete melting of the carburizing agent, which seriously affects the control of carbon. The technologies adopted by most domestic steel mills include...

AI Technical Summary

Problems solved by technology

It takes a long time to add ordinary carburizers to the carburizing process, which cannot meet the technical requirements of short-process production and does not match the cycle of the continuous casting machine

[0004] In order to meet the needs of the development of the iron and steel industry, there is an urgent need for a new carburizing material with faster melting and higher carbon yield to replace anthracite carburizers or petroleum coke carburizers, and better solve the problem of converter-continuous casting In short-process and low-cost production, there are problems of uneven melting of carburizing agent during tapping and carburizing process, long processing time, low carbon yield and difficult control

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