Inert Middle Alumina Balls – Catalyst Support Media

Inert mid -alumina balls have stable chemical features and a low rate of water absorption, resist high temperatures and high pressure, and also resist the corrosion of acid, alkali and some other organic solvents. They can stand the change in temperature during the manufacturing process.The main role of inert ceramic balls is to increase the distribution spots of gas or liquid, and to support and protect the activating catalyst with low strength.

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Application

They are widely used in many fields, including petroleum, chemical engineering, fertilizer production, natural gas and environmental protection. They are used as covering and supporting materials of catalysts in reaction vessels and as packing in towers.

Chemical Composition

Al₂O₃+SiO₂	Al₂O₃	Fe₂O₃	MgO	K₂O+Na₂O +CaO	Others
> 93%	45-50%	<1%	<0.5%	<4%	<1%

Physical Properties

Item	Value
Water absorption (%)	<2
Bulk density (g/cm3)	1.4-1.5
Specific gravity (g/cm3)	2.4-2.6
Free volume (%)	40
Operation temp.(max) (℃)	1200
Moh’s hardness (scale)	>7
Acid resistance (%)	>99.6
Alkali resistance (%)	>85

Crush Strength

Size	Crush strength
Size	Kgf/particle	KN/particle
1/8''(3mm)	>25	>0.25
1/4''(6mm)	>60	>0.60
3/8''(10mm)	>80	>0.80
1/2''(13mm)	>230	>2.30
3/4''(19mm)	>500	>5.0
1''(25mm)	>700	>7.0
1-1/2''(38mm)	>1000	>10.0
2''(50mm)	>1300	>13.0