Heat shock resistant refractory brick with slurry binding agent and production process thereof

Abstract

A heat shock resistant refractory brick with long service life is prepared from mullite, alpha-Al2O3 powder, cordierite, andalusite, argil and mud as adhesive through grinding, shaping and sintering.

Description

1. Technical field [0001] The invention relates to a mud-combined heat-shock-resistant refractory brick used in a blast stove for smelting iron and steel and a production method thereof. 2. Background technology [0002] The development of science and technology and the world economy provides a broad market for steel production. At the same time, higher requirements have been put forward for steel production. Especially with the large-scale blast furnace and the development of hot blast stove longevity technology, the quality of hot blast furnace lining materials is becoming more and more important. Due to the harsh working conditions of hot blast stove burner bricks, pipe bricks, hot blast outlets and other parts, frequent alternation of cold and hot (heat Shock phenomenon), it is more destructive to the refractory materials in these parts, and the life of the hot blast furnace is closely related to it. Anti-flaking high-alumina bricks are generally formed by combining wa...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a thermal shock resistant refractory brick combined with mud and its production method to overcome the shortcomings of thermal shock resistant bricks, which can effectively solve the problems of poor seismic performance and short service life of refractory bricks. The technical solution is that the refractory brick of the present invention is made of mullite, α-Al 2 o 3 Micropowder, andalusite, cordierite powder and white mud constitute the base material, and then add 3-15% of the weight of the base material into the mud binder to form and sinter to make it. The production method is to add the mud binder according to the requirements of the base material composition. After mixing and grinding evenly, molding with a molding machine, and then firing in a sintering furnace at a high temperature of ≥1350°C, the product of the present invention has good thermal shock resistance, effectively prevents bricks from falling and breaking during use, and has a long service life. High production efficiency, avoiding huge economic losses caused to enterprises due to shutdown and maintenance, broad prospects for popularization and application, and huge economic and social benefits