... achieved under the conditions of domestic Advanced level, the work cycle is long, large water production cycle, typically 500-1000m / ... g/m3)2.43.37Strength(MPa)≤40Minimum compressive strength of single grain≥200Floating grain rate(%)<10Void(%)20~48Acid ... acid and alkali, smooth surface, conductivity and stability, long life cycle.usageUsed in metallurgy, petroleum, chemical and other biological and ...