Alumina Bubble Brick


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BLOXEN

insulation refractory refractory brick lightweight brick lightweight Alumina Bubble Brick

Product Description

Bubble Alumina Bricks contain numerous closed pores and feature a lightweight structure, high temperature resistance, low thermal conductivity, high strength, minimal reheating linear change, and excellent thermal shock resistance.

These properties significantly improve furnace thermal efficiency, shorten production cycles, reduce furnace weight, and provide effective energy savings.

Application

Shuttle kilns, tunnel kilns, pusher slab kilns, carbon black reactors, reformers, bright stainless steel annealing furnaces, powder metallurgy furnaces, battery material sintering furnaces, and other high-temperature industrial equipment.

Parameter Control

Index Products		Unit	Bubble Alumina Bricks
Index Products		Unit	BA-90	BA-93	BA95	BA-99
Classification temperature		℃	1300	1260	1430	1540
Bulk density ≤		kg/m³	1350	1400	1600	1700
Cold crushing strength ≥		MPa	8	12	18	20
(0 . 1MPa,0 . 6%) Refractoriness under lond		℃	≥1650	≥1680	≥1700	≥1700
Permanent linear change*24h		%	±0.3 （ 1650℃）	±0.3 （ 1650℃）	±0.3 （ 1650℃）	±0.3 （ 1650℃）
Thermal Conductivity（AVG）	800℃	W/m.k	≤0.55	≤0.6	≤0.75	≤0.75
Al₂O₃		%	90	93	95	99
Fe₂O₃		%	1.2	0.8	0.8	0.7