refractory Hollow Alumina Spherere Bricks manufacturers

Hollow Alumina Sphere Bricks, 1,high temperature resistance, 2.low thermal conductivity, 3. good thermal insulation - details see: https://www.buildingsupplieshub.com/refractory-hollow-alumina-spherere-bricks-manufacturers-10082083

Place of Origin: Shandong China (Mainland)	Brand Name: Leibao	Type: Alumina Brick	Porosity: Hollow
Color: white ,yellow,white	Function: Acid Resistance Bricks,Firebricks	Feature: Angle Bricks,Thin Bricks	Technique: Sintered
Material: Alumina Block	Shape: Brick	Refractoriness (Degree): 1770°< Refractoriness< 2000°

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Hollow Alumina Sphere Bricks

Scope of application

They are widely used in inner linings of various non-contacted melt high temperature kiln and thermal insulating layers of high temperature kilns.

Physical and Chemical Indexes of Hollow Alumina Sphere Bricks
Name / Indexes/ Item		MLQ-1.5	LQ-1.2	LQ-1.5	LQ-1.7
Chemical composition	Al₂O₃% ≥	84	98.5	98.5	98.5
	Fe₂O₃% ≤	0.8	0.3	0.3	0.3
	SiO₂% ≤	15	1.0	1.0	1.0
Bulk density g/m³≤		1.5	1.2	1.5	1.7
Compressive strength at normal temperature MPa≥		16	3	12	15
Porosity % ≥		58	62	60	58
Soften point at 0.1MPa KD°C≥		1650	1650	1700	1700
Fire resistant (°C)≥		1800	1800	1800	1800
Thermal conductivity Hot side 1000°C W/m.k≤		1.2	0.95	1.05	1.15

Packaging Detail:Standard export packing and pallets

Delivery Detail:30 days

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