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：：Well Block and Mortar for Purging Plugs：：
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| Purging plugs for ladles developed and produced by LIRR have reasonable structure configuration design and present good thermal stability, good resistance to impact and erosion, good permeability and high gas purging rate. Three authorized patents have been covered in the products. (Patent Nos.: ZL97220592.6, ZL93224808.X, ZL91208067.1) |
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Item
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Well blocks |
Chrome corundum mortar |
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Chrome corundum mullite based |
Chrome corundum spinel based |
Corundum spinel based |
| Al2O3, % ³ |
60 |
³94(+
MgO, Cr2O3) |
94(+ MgO) |
70(+ Cr2O3) |
| SiO2,% £ |
22 |
- |
- |
- |
| Bulk density, g/cm3 ³
(110°C´24hrs) |
2.8 |
3.0 |
3.0 |
Grain size
³0.5mm,
£
10% |
| Apparent porosity, %, £ (110°C´24hrs) |
20 |
- |
- |
- |
CCS, MPa,
³
(110°C´24hrs) |
40 |
60 |
60 |
- |
MOR, MPa,
³
(110°C´24hrs) |
- |
8.0 |
8.0 |
- |
Refractoriness under load,
³
(0.2MPa,0.6%) |
- |
1650 |
1650 |
1650°C
(Refractoriness) |
| Thermal shock resistance, cycle,
³(Water quenching at 1200°C) |
10 |
10 |
10 |
- |
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Application |
Used to form a complete set for refining ladies with bottom argon-blowing purging plug
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Used for purging plug installation |
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组织机构
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