Cold ramming paste for overall building of electric furnace lining

Abstract

The invention discloses cold ramming paste for overall building of an electric furnace lining. The cold ramming paste is prepared from, by weight, 75-90 parts of aggregate, 15-25 parts of binder and 3-5 parts of additive. Wherein the aggregate is prepared from the following components in parts by weight: 30 to 50 parts of anthracite, 20 to 25 parts of pitch coke, 15 to 25 parts of graphite powder, 5 to 10 parts of fused alumina, 7 to 12 parts of fly ash and 5 to 8 parts of silicon carbide; the binder is prepared from the following components in parts by weight: 20 to 30 parts of modified asphalt, 45 to 60 parts of coal tar, 15 to 20 parts of pine oil and 15 to 25 parts of glutinous rice slurry; the additive is prepared from the following components in parts by weight: 30 to 35 parts of andalusite, 25 to 35 parts of aluminum oxide, 5 to 10 parts of polyvinyl alcohol, 5 to 10 parts of gum arabic and 3 to 5 parts of terpilenol.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a cold stamping paste for integral furnace lining of an electric furnace. Background technique [0002] Cold ramming paste refers to a cathode paste that can be used for masonry construction at room temperature. It is a carbon-filled raw material for masonry, widely used in industrial kilns such as aluminum electrolytic cells, ironmaking blast furnaces, smelting furnaces, and calcium carbide furnaces. The aggregate of this cathode paste is the same as that of ordinary cathode paste (also known as hot stamping paste), such as general calcined anthracite or electric calcined anthracite, metallurgical coke, graphite crushing, etc. Aluminum cathode cold ramming paste is a cathode carbon block ramming material with a construction temperature of 8°C-25°C. Due to the low construction temperature of cold paste, it can be used directly at room temperature without heating. ...

AI Technical Summary

Problems solved by technology

[0003] Although my country's aluminum electrolysis technology has caught up with the world's advanced level in terms of the capacity of industrialized electrolytic cells, there is still some gap between my country's aluminum electrolytic cell life, current efficiency, power consumption, environmental pollution and health hazards to construction workers and the international advanced level.