High-chromium refractory mortar powder

Abstract

The invention relates to high-chromium refractory mortar powder which is prepared from the following raw materials in percentage by weight: 75-90% of Cr2O3, 10-25% of Al2O3, 0.05-0.09% of phenolic resin powder and 0.1-0.5% of graphite. The high-chromium refractory mortar has a high-chromium content and the characteristics of high-temperature resistance, fire resistance and acid resistance; with the adoption of the phenolic resin powder, the bonding strength of refractory mortar can be kept at a higher temperature; the medium and high temperature bonding strength of the mortar is improved; thegraphite reinforces a C-centered stereoscopic network in a material and improves the strength of the material.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a high-chromium refractory and acid-resistant field. Background technique [0002] Refractory mortar (refractory mortar) is an unshaped refractory material used for refractory masonry joints, also known as joint materials. According to the setting and hardening characteristics of the binder, refractory mud can be divided into hydraulic, thermal and air-hardening refractory mud; hydraulic refractory mud uses cement as the binder and can be used at room temperature or where it may be in frequent contact with water or water vapor. Thermosetting refractory mud is usually made of thermosetting binders such as phosphoric acid or phosphate. After hardening, this kind of mud not only has high strength at various temperatures, but also has small shrinkage, tight joints and strong erosion resistance; air-hardening refractory mud is often prepared with air-hardening binders su...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that existing mud powders do not stick to each other and are not acid-resistant during actual high-temperature use, the present invention provides a high-chromium refractory mud powder