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GNT corundum molding material
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GNT corundum molding material which has some features such as high pure quality, high strength, scour-resistant, corrosion proof and shake proof was passed provincial authentication Aug 1993, acquired the second award of technology development in metal smelting industry of Jiangsu Province. It¡¯s main technical features reach the criterion of congener products in Japan. It is mainly used in outer refiner equipment of molten-steel furnace (PH dipping tube, CAS-OB dipping tube, oxygen-blowing and argon-blowing injector), petroleum-catalyzing and cracking equipment and the mouth of large concrete kiln, etc. Main chemical and physical index
Tag of products |
GNT-90 |
GNT-95 |
Chemical components |
Al2O3 % |
>90 |
>95 |
Density g/cm3 110¡æ¡Á 24h |
3.1 |
3.2 |
Press-resistant strength Mpa |
110¡æ¡Á24h |
>40 |
>40 |
1500¡æ¡Á3h |
>80 |
>80 |
Bend-resistant strength MPa |
110¡æ¡Á24h |
>5 |
>5 |
1500¡æ¡Á3h |
>12 |
>12 |
Line-changing rage % 1500¡æ¡Á3h |
0~+0.5 |
0~+0.5 |
Highest temperature ¡æ |
1800 |
1800 |
The amount of effusion % |
4.5~5 |
4.5~5 | | |
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