소결된 멀라이트 벽돌

Sintered mullite brick has excellent high-temperature performance, high strength, high refractoriness under load, 우수한 열 충격 안정성, good chemical stability, and good corrosion resistance to acidic and alkaline slag.

Specification of sintered mullite brick

안건	색인
	SM65	SM70	SM75	SM80
알2영형3  %	≥64	≥68	≥74	≥78
철2영형3  %	≤1.2	≤1.2	≤1.0	≤0.8
겉보기 다공성 %	≤18	≤18	≤17	≤16
벌크 밀도 g/cm3	≥2.45	≥2.50	≥2.60	≥2.75
콜드 크러싱 강도 MPA	≥60	≥70	≥75	≥85
0.2부하 하의 MPA 굴절성 ℃	≥1580	≥1600	≥1650	≥1700
Permanent Linear Change Rate % 1500℃×2h	-0.4~+0.1	-0.3~+0.1	-0.2~+0.1

Characteristics of sintered mullite bricks

1. Low thermal conductivity and heat capacity.
2. High purity and low impurity content.
3. High temperature resistance and can directly contact flames.
4. High strength and excellent thermal shock resistance.

Uses of sintered mullite bricks

Sintered mullite bricks can be used for high-temperature hot blast stoves, large blast furnace hearths, and bottoms, steelmaking electric furnace tops, ceramic industrial kiln lining, kiln furniture, glass kiln cement kiln lining

Comparison between sintered mullite bricks and fused mullite bricks

Sintered mullite bricks have higher mechanical strength and load deformation temperature, high density, 낮은 다공성, high crystalline phase content, and no abnormality in the thermal expansion curve. Generally speaking, the high-temperature flexural strength of sintered mullite bricks is higher than that of fused mullite bricks. This is due to the existence of some small but well-developed crystal networks in the structure. Sintered mullite bricks have good volume stability and good creep resistance due to their larger crystals.