Exothermic-insulating sleeves are used to increase the yield in foundry practice. Function of the sleeve is predominant to enhance the effective casting modulus by increasing feeding efficiency. This is represented by a modulus extension factor (MEF)
Brown corundum is made from fine bauxite melted in electric arc furnace. lt is in brown color. The main component isɑ-AL2O3 .It is of fine fire-proof and excellent wear resistance. It is main raw material for production of middle and low level unshaped and shaped fire-proof materials.
|
ITEM |
GRIT>0.1mm |
FINE≦0.1mm |
|
Al2O3%≧ |
95.0 |
94.5 |
|
SiO2%≦ |
1.00 |
1.20 |
|
Fe2O3≦ |
0.20 |
0.50 |
|
TiO2%≦ |
3.20 |
3.50 |
|
BULK g/cm3DENSITY≧ |
3.85 |
|
Links：
