Development of LZ-75 High Aluminum Brick Fired at Low Temperature
WANG Linfeng
JING Xiangjia
Abstract：In the industrial production of high-alumina bricks,continuous upgrades in kilns,raw material quality,and firing processes have made it a critical challenge to ensure that key performance indicators-such as refractoriness-under-load temperature and permanent linear change on reheating-meet the required standards while maintaining low costs.By optimizing the formulation,selecting reliable raw material suppliers to ensure stability of critical parameters during firing,and incorporating additives that facilitate a smooth sintering process and mitigate volume changes to promote solid-state sintering,this study adjusted the firing process by lowering the firing temperature and shortening the soaking time.The effects of varying firing temperatures and soaking times on high-temperature performance were investigated through trial productions.As a result,a low-temperature fired LZ-75 high-alumina brick that complies with national standards was successfully developed.
Keywords：high aluminum brickhigh temperature indexlow temperature firingchange rate of burning line
Publication Date：2025-10-20
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 33-36 )