镁铁铝复合尖晶石砖
Mafic alumina spinel bricks
镁铁铝复合尖晶石砖 且有无铬环保优势,良好的热需稳定性,良好的挂“窑皮”能力,良好的耐侵蚀性能,低热膨胀和低热导率,和较好的结构柔韧性,在实际应用中,该砖使用寿命超过1年,烧成带挂窑皮迅速,窑皮厚度均匀稳定,耐火砖无大块剥落现象,停窑无耐火砖剥落现象,窑筒体温度低、热能损耗少。
Mafic alumina spinel bricks. has the chromium-free environmental advantage.good thermal shock stability. good hang "kiln skin"ability, good erosion resistance. low thermal exoansion and low thermal conductivityand aood structure flexibility in practice. the brick the service life of more than 1 vear hana the firina kiln skin auickly, kiln skin thickness is uniform and stable.firebrick no larae peelina phenomenon. There is no oeelina phenomenon of refractory brick in kin stop.and the temperature of kiln barreis low and the heat eneray loss is less.
项目
Item
镁铁铝复合尖晶石砖
Mafic alumina spinel bricks
MFA-80A MFA-80B
MgO/(%) ≥ 85 80
体积密度/(g/cm³)/(%) ≥ 2.95 2.90
显气孔率/(%)≤ 18 18
常温耐压强度/(Mpa)≥ 50 45
荷重软化温度(T0.6)/(℃)≥ 1680 1650
抗热震性(1100℃~水冷)/(次)≥ 8 8
导热系数(1000℃)(w/m.k) 2.8 2.8
SiO₂/(%) ≥ 1.5 2.0
Fe₂O₃/(%) ≥ 3~5 3~5
Al₂O₃/(%) ≥ 4~6 4~6