... stability,2. Good physical properties.3. High volume density.4. High refractoriness.5. High temperature calcination.6. Low content ... <=1.5 <=4.0 <=0.4 <=0.4 >=3.15 <=4 GAL-85 >=85 <=1.8 <=4.0 <=0.4 <=0.4 >=3.10 <=4 GAL-80 >= ... 80 <=2.0 <=4.0 ... particles: 0-1mm,1-3mm,3-5mm,5-8mm,8-15mm,0-5mm,0-50mmSize of powder: -200mesh,-270mesh ...