Physical properties
Brand SK-32 SK-34 SK-35 SK-36 SK-38
Index
Refractoriness íµ 1730 1750 1770 1770 1790
bulk density g/cm3 2.15 2.2 2.3 2.35 2.52
Apparent porosity ¿Q% 24 24 23 23 23
Cold crushing strength ¿RMpa 30 35 40 45 65
Refractoriness under load (0.2MP) íµ 1350 1350 1400 1450 1550
Permanet liner change 1500íµ 2hrs% +0.2to-0.2 +0.2to-0.2 +0.1to-0.4 +0.1to-0.4 +0.1to-0.4
Thermal expansion at 1000 íµ 0.5 0.5 0.5 0.5 0.5
Fe3O4% 1.96 1.93 1.9 1.87 2
Al2O3% ¿R 42 48 55 60 65
SiO2 48-50 46-48 41-44 37-40 27-30
Physical properties
Brand Mca-8a Mca-7a
Index
Mgo 83.44 85.64
Cao 8.05 7.59
Sio2 3.48 2.83
Cao/sio2 2.31 2.68
Refractoriness under load 1700 1680
Cold crushing strength 102 106
Thermal shock resistances 3
Apparent porosity 10 18
Type high alumina
Items B1 B2 B3 B4 B5 B6 B7
Physical properties Permanent linear change ín 900 1000 1100 1200 1300 1400 1500
Bulk density 0.7 0.7 0.75 0.8 0.8 0.9 1
Cold crushing strength & nbsp & nbsp; 2.4 2.4 2.4 2.4 2.4 3 3
Thermal conductivity & nbsp; & nbsp & nbsp; 0.2 0.21 0.23 0.26 0.27 0.31 0.36
Items L-1000 L-1260 L-1420 L-1600
working temp(íµ) 1000 1260 1200 1350
Max. Working temp(íµ) 1260 1260 1350 1450
Bulk density (g/cm3) 160-250 160-250 160-250 160-250
Thermal shrinkage for24hrs ín 1150íµ 1250íµ 1350íµ 1400íµ
4 4 4 4
Chemical components% Al2o3 45~47 47~49 53~55 38~54
Sio2+al2o3 97~98.5 98~99 98.5~99 83~89
Zro2 íí-íí -íííí 10~18 -
Physical properties
Brand Mge-20a Mge-20b Mge-20c Mge-16a Mge-16b Mge-16c Mge-12a Mge-12b Mge-12c Mge-8a Mge-8b Mge-8c
Index
Mgo 50 45 40 55 50 45 65 60 55 70 65 60
Cr2o3 20 20 20 16 16 16 12 12 12 8 8 8
Apparent porosity 18 19 22 18 19 22 18 19 21 18 19 21
Cold crushing strength 35 30 25 35 30 25 40 35 30 40 35 30
Refractoriness under load (0.2mp) 1700 1650 1550 1700 1650 1500 1700 1650 1550 1700 1650 1530
Physical properties
Brand Gg-0.7a Gg-0.7b Gg-0.6 Gg-0.5a Gg-0.5b Gg-0.4
Index
Bulk density 0.7 0.7 0.6 0.5 0.5 0.4
Compressive strength mpa 2.45 1.18 0.78 0.78 0.59 0.78
Permanent line chang 900
Conductivity coefficient 0.2 0.21 0.17 0.15 0.16 0.13
