Bake-free iron runner ramming mass containing ferrosilicon nitride

Abstract

The invention provides a baking free iron groove tamping material containing ferrum silicon nitride which comprises aluminium silicate material, silicon carbide, carbon material, ferrum silicon nitride and bonding agent, their weight portions are, aluminium silicate material 43-80%, silicon carbide 7-25%, carbon material 2-10%, ferrum silicon nitride 5-15%, Si powder 0-4%, Al powder 0-3%, and phenolic resin 2-7%. The invention realizes increased tamping material high-temperature strength, high temperature molten slag erodibility resistance and penetrability, and improved material oxidation resistance property.

Description

technical field

[0001] The invention belongs to the material used for the working layer of the iron ditch or the slag ditch in blast furnace ironmaking, and in particular provides an Al alloy containing ferrosilicon nitride. 2 o 3 - SiC-C system ramming material. technical background

[0002] Blast furnace iron trench and slag trench lining materials are the main materials used and maintained in front of the blast furnace. At present, due to the different sizes of blast furnaces, the construction methods are also different; as far as the current situation in our country is concerned, these construction methods actually coexist at the same time. The material is also mostly Al 2 o 3 -SiC-C system material is the main material.

[0003] Refractory materials for blast furnace iron trough and slag trough are under the action of periodic molten iron and slag, and the service conditions are very harsh, and must meet the following performance requirements:

[0004] (1) Good hi...

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