Refractory mortar powder

Abstract

The invention discloses a refractory mortar powder which is prepared from the following raw materials in percentage by weight: 46-48% of silica of which the SiO2 content is not less than 96%, 46-48% of residual silica bricks of which the SiO2 content is not less than 92%, 3-8% of refractory brick clay of which the Al2O3 content is not less than 25%, 0.05-0.09% of graphite and 0.03-0.05% of a phenolic resin powder, wherein the residual silica bricks are made of a material of silica bricks constructed by the refractory mortar powder. Due to the adoption of the phenolic resin powder, the adhesionstrength of refractory mortar can be kept at a high temperature, and the medium / high temperature adhesion strength of the mortar can be improved; due to the adoption of the residual waste bricks, themaximal utilization of wastes can be achieved, the service lives of a steel ladle and a furnace can be prolonged, and the refractory mortar powder is applicable to high-temperature furnaces and steelladles.

Description

Technical field [0001] The invention relates to the technical field of refractory materials, in particular to a field suitable for refractory applications such as ladle, coke oven and glass furnace. Background technique [0002] Refractory mortar is an unshaped refractory material used for the joints of refractory masonry, also known as joint materials. Refractory mortar can be divided into hydraulic, thermosetting, and air-hardening refractory slurries according to the curing characteristics of its binder; hydraulic refractory slurries use cement as a binder, which can be used at room temperature or where they may be in frequent contact with water or moisture. Thermosetting refractory mud is usually made of thermosetting binders such as phosphoric acid or phosphate. After hardening, this kind of mud has high strength at various temperatures, small shrinkage, tight joints, and strong corrosion resistance. Air-hardening refractory mud is usually prepared with air-hardening binder...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing siliceous mud powder does not stick to each other in the actual high-temperature use process, the present invention provides a refractory mud powder