... #,1000#,1200#,1500#,2000#,2500#,3000#,4000#Refactory grade: 1-0mm,3-1mm,5-3mm,5-8mm-200mesh,-240mesh,-300mesh ... .30≤0.10≤0.0018micropowder240-4000≥98.5≤0.1≤0.4≤0.15—Refactory gradeGroup size0-1mm1-3mm3- ... 5mm5-8mm≥99≤0.1≤0.35≤0.3—Fine powder-180mesh-200mesh-240mesh- ... 320mesh≥99≤0.1≤0.35≤0.3—colorwhite hardness( mohs )9.0Melting ...