Calcined Alumina

By: Kaifeng Datong Refractories Co. Ltd.

Price	Available on request
Category	Aluminium Smelter Raw Materials
Manufacturer	NA (Trader)
Min Order Quantity	10.00 Tons
Delivery Lead Time	As per order
Place of Origin	China
Supply Ability	Customization as required
Packaging Details	Standard export packing
Transportation Details	Road / Ship

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Details

Valid Upto

22.03.2026

Description

Character：
1. Small grain size ：After calcining, the alumina can be converted into alpha size (the smallest grain size 300 nm), so that it has better sintering activity.
2. High activity：Using patent technology and special calcinated process to make the alumina with high sintering activity after calcining.
3. High conversation rate ：The conversation rate varies from 92% to 99% depending on the application of the alpha alumina.
4. High purity : Low content of potassium and sodium (0.04 ~ 0.06%) refractory alumina powder, which makes it have a higher working temperature and working strength.

Good liquidity：
1. During the calcining, the microcrystalline phase patent technology is used to make the grain smaller of alpha alumina and fill effect better in castable refractory.
2.The crystal morphology of alpha alumina has been effectively controlled, grain surface is approximate ball type or ball type.
3. The distribution of grain size is effectively controlled and optimized so that it has excellent liquidity.
4. Strong binder at high temperature, ceramic products with high strength.

Medium sodium oxide				Low sodium oxide
Model	AW-4M		AW-SF		AW-12M		AW-06L
	Guarantee	Typical	Guarantee	Typical	Guarantee	Typical	Guarantee	Typical
Al2O3	≥99.00	99.37	≥98.50	99.08	≥99.00	99.6	≥99.00	99.6
SiO2	≤0.20	0.1	≤0.20	0.1	≤0.20	0.12	≤0.20	0.11
Fe2O3	≤0.20	0.06	≤0.20	0.13	≤0.20	0.08	≤0.20	0.08
Na2O	≤0.30	0.25	≤0.25	0.13	≤0.20	0.06	≤0.20	0.06
True density g/cm³	≥3.95	3.96	≥3.92	3.94	≥3.92	3.94	≥3.92	3.95
Median particle diameter D50μm	3~5	4.47	1.5~2.5	1.66	1.0~1.5	1.23	0.8~1.2	0.9
α-Al2O3 %	≥93	93	≥95		≥95		≥95
Distribution of particle	Monomodal		Bimodal		Monomodal		Monomodal
Test standard	GB/T3044-89; GB3604-83
Package	25kg/bag