လက္ခဏာတွေက ဘာတွေလဲ။ magnesia alumina bricks?

(1) Magnesia alumina bricks have good resistance to rapid cooling and heating, and can withstand water cooling for 20-25 times, or even higher.

(2) Due to the higher melting point of magnesia-aluminum spinel itself, the high-temperature structural strength of magnesia-aluminum bricks is improved compared with that of magnesia bricks, reaching 1520～1580℃, or even higher.