Гурӯҳи Rongsheng
Sintered mullite brick has excellent high-temperature performance, қувваи баланд, рефрактори баланд дар зери бори, устувории аълои зарбаи гармӣ, устувории хуби химиявй, and good corrosion resistance to acidic and alkaline slag.
Specification of sintered mullite brick
| Адад | Индекс | |||
| SM65 | SM70 | SM75 | SM80 | |
| Al2О3 % | ≥64 | ≥68 | ≥74 | ≥78 |
| Фе2О3 % | ≤1.2 | ≤1.2 | ≤1.0 | ≤0.8 |
| Порозияи намоён % | ≤18 | ≤18 | ≤17 | ≤16 |
| Зичии масса г/см3 | ≥2.45 | ≥2.50 | ≥2.60 | ≥2.75 |
| Қувваи шикастани сард МПа | ≥60 | ≥70 | ≥75 | ≥85 |
| 0.2Мпа Рефракторӣ зери бори ℃ | ≥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
- Low thermal conductivity and heat capacity.
- High purity and low impurity content.
- High temperature resistance and can directly contact flames.
- 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, ва поён, 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, low porosity, high crystalline phase content, and no abnormality in the thermal expansion curve. Умуман, 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.
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