Corundum Mullite Bricks

Update: 2015/11/15      View:
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Introduction

The product is composed of high quality mullite and high purity fused corundum as raw materials with addition of specified binder by shaping at high pressure and sintering at high temperature. With features of high refractoriness under load, compact structure, low porosity and high resistance to corrosion, the products are available for the furnace bottom, ceramic cup bottom lining and combined masonry of tuyere, taphole and slag notch of large-sized BF. 

Index
Item
GM-1
GM-2
Al2O3 , %
≥88
≥85
Fe2O3 , %
≤1.0
≤1.2
Refractoriness, ℃
≥1790
≥1790
Bulk density , g/cm3
≥3.0
≥2.9
Apparent porosity ,%
≤16
≤18
Common compressive strength , MPa
≥120
≥80
0.2Mpa Refractoriness under load , ℃
≥20
/
Modulus of rupture , MPa
≥1700
≥1620
Permanent linear change (1500℃×3h) , %
0~+0.1
/

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