Fused Spinel Stone

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Fused Spinel Stone Specification

Water Absorption
<1%

Form
Solid stone/block

Usage & Applications
Ideal for critical high-temperature zones in kilns and furnaces

Chemical Composition
MgOAl2O3 (Magnesium Aluminium Oxide)

Hardness (%)
Very high (Mohs hardness ~8)

Purity(%)
>98%

Melting Point
>2000C

Application
Refractory linings, steelmaking, cement rotary kilns, glass furnaces

Density
3.6 Gram per cubic centimeter(g/cm3)

Surface Finish
Smooth, dense

Product Type
Fused Spinel Stone

Types of Refractories
Basic Refractory

Shape
Block/Brick/Stone

Porosity
Low apparent porosity

Dimensional Stability
Excellent at high temperatures

Strength
High mechanical strength

Specific Gravity
3.55 g/cm - 3.6 g/cm

Thermal Conductivity
Low

Color
Blue or light purple

Temperature Stability
Up to 2000C continuous use

Acid Resistance
High

Grain Size
Customizable as per requirement

Bulk Modulus
163 GPa

Thermal Expansion
8.1 x 10/C (at 20-1000C)

Packaging
Export-worthy wooden pallets or as per requirement

Refractoriness Under Load (RUL)
>1700C

Standard
International Standard (ISO certified)

Resistance to Slag
Excellent

About Fused Spinel Stone

Process of Production and application

Manufactured from high purity magnesia and Bayer process alumina in large electric arc furnace. It was excellent refractory properties, and can be used to produce Brick and Castables in areas where slag resistance is key. Such as: Roof of EAF and basic oxygen furnace, Steel ladle intermediate zone of cement rotary kiln, etc.

Specification :

Item		Unit	Brands
			AM-70	AM-65	AM-85	AM-90
	Al₂O₃	%	71-76	63-68	82-87	88-92
	MgO	%	22-27	31-35	12-17	8-12
	CaO	%	0.65 max	0.80 max	0.50 max	0.40 max
	Fe₂O₃	%	0.40 max	0.45 max	0.40 max	0.40 max
	SiO₂	%	0.40 max	0.50 max	0.40 max	0.25 max
	NaO2	%	0.40 max	0.50 max	0.50 max	0.50 max
Bulk Density g/cm³			3.3 min	3.3 min	3.3 min	3.3 min

Unmatched High-Temperature Endurance

Engineered for demanding industrial operations, Fused Spinel Stone withstands continuous temperatures up to 2000C, making it a top choice for linings in kilns and furnaces. Its remarkable refractoriness under load ensures dimensional stability under aggressive thermal conditions, safeguarding equipment integrity and performance over extended service periods.

Superior Chemical and Slag Resistance

The materials high resistance to slag attack and acidic environments means prolonged service life and reduced maintenance costs in steel, cement, and glass applications. This chemical resilience, combined with very low water absorption and porosity, provides enduring protection even in the harshest industrial sectors.

Tailored to Global Standards and Requirements

Manufactured to meet international standards and customizable in grain size, Fused Spinel Stones are available in a range of shapes such as blocks, bricks, or stones. They are securely packaged for export and can be tailored to meet specific end-user requirements, ensuring both flexibility and premium quality for global industry needs.

FAQs of Fused Spinel Stone:

Q: How is Fused Spinel Stone used in industrial applications?

A: Fused Spinel Stone is primarily employed as refractory linings in high-temperature zones, such as steelmaking furnaces, cement rotary kilns, and glass production units. Its excellent thermal stability, low thermal expansion, and resistance to corrosion make it an ideal choice for these harsh environments.

Q: What benefits does Fused Spinel Stone offer over traditional refractories?

A: Compared to conventional refractories, Fused Spinel Stone offers superior slag and acid resistance, higher mechanical strength, lower porosity, and greater stability at elevated temperatures, resulting in longer service life and reduced maintenance in critical industrial settings.

Q: When should I consider choosing Fused Spinel Stone for my facility?

A: Fused Spinel Stone should be selected when facing extremely high temperatures (up to 2000C), aggressive chemical environments, and applications that demand minimal wear and robust structural integrity, such as in kilns and furnaces for steel, cement, or glass production.

Q: Where is Fused Spinel Stone typically sourced and supplied from?

A: Fused Spinel Stone is manufactured to international standards and is available globally from reputable exporters, suppliers, and importers, including specialized manufacturers based in India. Packaging can be tailored to suit overseas requirements.

Q: What customization options are available for Fused Spinel Stone?

A: Grain size and stone dimensions can be customized to meet specific operational needs. The product is available as blocks, bricks, or stones, allowing adaptation to various furnace and kiln designs or unique application requirements.

Q: How does the production process ensure high purity and performance?

A: Through careful selection of raw materials and advanced fusion techniques, MgO and Al2O3 are combined to form a dense, low-porosity spinel matrix exceeding 98% purity. Strict ISO-certified quality controls guarantee consistent material strength and performance.

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