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Introduction
1.Made by bauxite clinker and binder through Crushing,Mixing,Shaping,Drying and high temperature Sintering.
2.Al2O3 content is 48%-80%.
3.Main mineral components are corundum and mullite phases.
4.Refractoriness is usually above 1770℃,refractoriness under load is 1420-1550℃.It is a neutral refractory material so that it enjoys excellent resistance to acid and alkali corrosion.
5.Working temperature:1350℃ -1650℃.
Technique Data
Item | Index | ||||
International code name | SK35 | SK36 | SK37 | SK38 | SK40 |
Al2O3 % | >=48 | >=55 | >=65 | >=75 | >=80 |
Fe2O3 % | <=2 | <=2 | <=2 | <=2 | <=2 |
Refractoriness ℃ | >=1750 | >=1770 | >=1790 | >=1790 | >=1790 |
Apparent porosity % | <=22 | <=22 | <=23 | <=23 | <=21 |
Cold crushing strength Mpa | >=39 | >=44 | >=49 | >=54 | >=65 |
Refractoriness under load(0.2MPa) ℃ | >=1420 | >=1470 | >=1500 | >=1520 | >=1530 |
Reheating Linear Change (1500℃ 2h) % | +0.1~ -0.4 *1450℃ | +0.1~ -0.4 | +0.1~ -0.4 | +0.1~ -0.4 | +0.1~ -0.4 |
Feature
1.High-temperature endurable;
2.Good thermal shock resistance;
3.High cold crushing strength;
4.Good resistance to abrasion and corrosion;
5.Good thermal spalling resistance;
6.High mechanical strength;
7.Good volume stability at high temperature;
