high quality magnesia alumina spinel castables

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Magnesia Alumina Spinel Castables

Magnesia alumina spinel castables (also called magnesium aluminate spinel castables), and refractories containing magnesia aluminate spinel (MgAl2O4) are materials for emerging technology in several applications like cement and steelmaking processes. The development of self-forming spinel castables without any synthetic spinel grains appears to be a promissory for optimum refractory linings.

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Introduction of Magnesia Alumina Spinel Castables

Refractories containing magnesium aluminate spinel are becoming increasingly popular due to their exceptional behavior in several applications. Spinel refractories have been successfully applied in aluminum, glass, lime, and cement process vessels and also in steelmaking ladles. magnesia-spinel materials are generally used in the transition zones of cement kilns.

The magnesia aluminum spinel castables are prepared from high-purity materials, which have good corrosion resistance, and thermal shock stability. Magnesia aluminum spinel refractory castables have a few anti-flaking properties. And which is the finest advanced refractory material.

Packing of Magnesia Alumina Spinel Castables

Plastic bag(25kg), Kraft bag (25 kg), Plastic Ton bag(1 ton);

1 ton on the pallet with plastic film & bundle belts.

Per your requests

Characteristics of Magnesia Alumina Spinel Castables

Good strength

Good fluidity

Appropriate solidification time

Save time, fast and convenient

High strength, long life

Good insulation properties

High-temperature resistance

Corrosion resistance and good thermal shock resistance

Application of Magnesia Alumina Spinel Castables

Furnaces of metallurgy industry, heat treatment furnace.

Furnace of incineration of garbage, recirculating fluidized bed furnace.

Furnaces of the chemical industry and construction industry.

Cement rotary kiln.

Chemical & Physical Index

item		XHJMAC80	XHJMAC82	XHJMAC85	XHJMAC90
AL₂O₃（%）		70	75	80	85
MgO（%）		13	12	11	8
SiO₂ (%)		3	2	1	1
Bulk density	(g/cm³)	2.6	2.65	2.7	2.75
Thermal Shock Stability	1000℃, water, quenching, cycle	70	80	100	75
Cold crushing strength	(MPa) 110℃*24H	40	40	45	40
Modulus of Rupture	(MPa) 110℃*24H	5.5	5.5	5.5	5.5
Heating permanent line change, %	Test temperature×3h	-0.5~+1.5	-0.5~+1.8	-0.2~+1.8	-0.2~+1.8
Heating permanent line change, %	Test temperature×3h	(1500℃)	(1550℃)	(1550℃)	(1550℃)
Refractoriness under load	(℃) 0.2MPa	1650	1710	1730	1770