Powerful binder for refractory brick

Abstract

The invention discloses a powerful binder for a refractory brick, and relates to a binder in the field of refractory materials. The powerful binder consists of the following components in parts by weight: 5-10 parts of phenolic aldehyde varnish, 5-20 parts of phenolic resin, 2-5 parts of hexamethylenetetramine, 40-65 parts of magnesia powder, 5-10 parts of clay powder and 10-20 parts of wetting agent. The powerful binder for the refractory brick disclosed by the invention has good cohesiveness with the refractory brick as well as perfect cohesive force; meanwhile, the settling time is short, and the construction time can be remarkably saved.

Description

technical field [0001] The invention relates to a binder in the field of refractory materials, in particular to a strong binder for refractory bricks. Background technique [0002] Magnesia carbon brick is a commonly used refractory brick, which has the advantages of high refractoriness, good slag resistance, and strong thermal shock resistance. It is widely used as a lining material for various steelmaking furnaces. The production of magnesia-carbon bricks mostly adopts compression molding, and the forming of large bricks requires a large pressure, so the molding is more difficult. Usually, a single magnesia-carbon brick is bonded with an adhesive to form a large block of masonry for masonry. . Since the environment in which magnesia-carbon bricks are used is generally harsh, the requirements for the bonding strength, refractoriness, slag resistance, and erosion resistance of the binder are also high. The existing high-temperature binders are mainly silicate, phosphate an...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a strong adhesive for refractory bricks, which is used for bonding between refractory bricks such as magnesia carbon bricks or other siliceous bricks, high alumina bricks, magnesia chrome bricks, etc., to solve the existing general bonding The problem that the bond strength of the agent is not high in high temperature environment