Sheng Iron developed corundum based long
service life ladle upper nozzles with new technique. The nozzles have the
features of superior resistance to thermal shock, erosion and oxidation etc.
Lower nozzles for ladle are made from corundum, bauxite, flake graphite,
antioxidant and phenolic resin. They show the features of excellent thermal
shock resistance, good excellent corrosion and erosion resistance, strong
cracking resistance etc. These products have been widely used in domestic
steelworks.
Properties specification of Inner Nozzles & Collector Nozzles
Type |
SR-SH-1 |
SR-SH-2 |
SR-SH-3 |
SR-SK-1 |
SR-SK-2 |
|
Chemical analysis (%) ≥ |
Al2O3 |
68 |
72 |
63 |
70 |
78 |
ZrO2 |
— |
— |
6 |
— |
— |
|
C |
7 |
7 |
8 |
5 |
2 |
|
Bulk density (g/cm3) ≥ |
2.70 |
2.80 |
2.90 |
2.65 |
2.95 |
|
Apparent porosity (%) ≤ |
8 |
8 |
8 |
18 |
12 |
|
HMOR (MPa) ≥ (1400×0.5h, C embedded) |
8 |
9 |
12 |
— |
— |