Calcined α-Alumina

Main Composition: Al2O3 99%

Application: Widely used as refractory materials, insulation equipment, wear-resistant materials, ceramic materials, grinding and polishing etc

Raw Material: Industrial alumina

Color: White

a-Al₂O₃: 93%-96%

Specific surface area: 0.9-7 (M₂/g)

Capacity: 3000 MT per month

Package: Export wooden pallets

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Product Introduction：
Molecular formula: Al2O3
Calcined α-Aluminum also known as calcined aluminum, is made from industrial aluminum hydroxide or industrial aluminum and calcined at an appropriate temperature to form a stable crystalline form α-Alumina products. Calcine α-Alumina micropowder made from α-Alumina through ball milling.

Product Highlights:
1. High melting point
2. High mechanical strength and hardness
3. Perfect insulation performance
4. Good wear resistance
5. Stable chemical properties

Application:
Calcined α- Aluminum products have a high melting point, excellent mechanical strength, hardness, high resistivity, and thermal conductivity. It can be widely used in industries such as refractory materials, insulation equipment, wear-resistant materials, ceramic materials, grinding and polishing etc.

Technical Data:

Type	Chemical composition				Physical Characteristics
Type	Al₂O₃（%）	Na₂O（%）	SiO₂（%）	Fe₂O₃（%）	a-Al₂O₃（%）	Specific surface area (M₂/g)	(D50),μm
Calcined α-alumina for refractories
SN-800FG	99.7	0.05	0.1	0.03	96	0.9	3±0.5
SN-05G	99.6	0.15	0.1	0.03	95	0.8	3.5±0.5
SN-3G	99.5	0.25	0.1	0.04	94	2	4±0.5
SN-5G	99.3	0.35	0.1	0.04	93	1	5±0.5
Active-α-alumina for refractories
SN-370	99.7	0.05	0.15	0.03	97	3	2.5±0.5
SN-15G	99.6	0.05	0.15	0.03	96	7.5	1±0.5
SN-25G	99.6	0.05	0.15	0.03	95	4	1.6±0.5
SN-30G	99.4	0.25	0.15	0.04	94	4	1.5±0.5
Calcined α-alumina for building ceramics
SN-2G	98.0	0.35	0.15	0.03	91	2	1.5±0.5
SN-3G	99.0	0.35	0.15	0.03	92	1.5	3±0.5
SN-4G	99.0	0.35	0.15	0.03	93	1	4±0.5
Calcined α-alumina for electrician ceramics
SN-20	99.7	0.04	0.03	0.03	96	0.7
SN-30B	99.8	0.03	0.03	0.02	97	0.6
SN-40	99.7	0.05	0.03	0.03	95	0.8
SN-508	99.8	0.02	0.03	0.02	98	0.3
Calcined α-alumina for wear resistant ceramics
SN-10	99.8	0.05	0.05	0.03	95	3
SN-20W	99.7	0.15	0.03	0.03	94	2
SN-20N	99.6	0.25	0.05	0.03	93	7
SN-30W	99.5	0.35	0.04	0.04	92	1.5
Calcined α-alumina for grinding and polishing
SN-5P	99.6	0.05	0.15	0.03	95	1.5	5±0.5
SN-15P	99.5	0.25	0.2	0.04	94	1.5	1±0.5
SN-25P	99.4	0.25	0.2	0.05	93	2	2±0.5

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