Release time: 2021-01-11 15:47:42 Page viewed: 1643
High strength mullite based microporous lightweight aggregates
Using high grade kaolin, industrial alumina, specific mineralizer and special additive as starting materials, a series of mullite based microporous aggregates are made by specially developed technique. They are featured by high purity, high porosity while evenly distributed micro pores, high strength and low shrinkage fired at high temperatures. The products are suitable for high performance density reduced castables and high purity insulation refractory products.
Based on their alumina level, they are divided into four types, coded as QM42, QM50, QM60 and QM70.
牌号 Product code 指标Properties |
Al2O3 (%) |
Fe2O3 (%) |
K2O+Na2O (%) |
气孔率 Apparent Porosity (%) |
体积密度 Bulk Density (g/cm3) |
QM42-1.0 |
≥40 |
≤0.8 |
≤0.5 |
≥50 |
1.0-1.2 |
QM42-1.5 |
≥40 |
≤0.8 |
≤0.5 |
≥40 |
1.4-1.6 |
QM50-1.9 |
≥50 |
≤0.8 |
≤0.5 |
≥25 |
1.8-2.0 |
QM60A-2.1 |
≥60 |
≤0.8 |
≤0.5 |
≥25 |
2.0-2.2 |
QM60B-1.3 |
≥60 |
≤1.5 |
≤1.0 |
≥45 |
1.3-1.5 |
QM70-2.3 |
≥70 |
≤0.6 |
≤0.6 |
≥30 |
2.2-2.4 |
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