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Product

Alumina Grinding Balls

[ Products Description ]
The alumina grinding balls has been widely used in ball mills as abrasive media for ceramic raw materials and glaze materials in ceramic factories, cement factories, enamel factories and glasswork owing to the excellence of high density, high hardness, high wear resistance. During the abrasive/grinding processing, ceramic balls will not be broken, it will not pollute the material to be grinded.
Type: According to the content of aluminum: 60-70%, 65-75%, 92%, 95%
According to the specification: Φ25mm-Φ75mm

[ Technical Specification ]

Item		High Alumina Grinding Ceramic Ball 95% Al₂O₃	Middle Alumina Grinding Ceramic Ball 92% Al₂O₃	Micro-crystal middle-alumina 65-75% Al₂O₃	Carborundum middle alumina 60-70% Al₂O₃
Chemical Composition %	Al₂O₃ %	95	≥92	65-75	60-70
	SiO₂ %	3	3.81	30-15	20-15
	Fe₂O₃%	0.05	0.06	0.41	<0.5
	TiO₂ %	0.04	0.02	1.7	1.8
Other, %		1.9	2.53	5	10
Bulk Density (g/cm³)		3.68	3.65	2.93-3.0	2.80-2.90
Water Absorption, %		<0.005	<0.01	<0.01	<0.05
Mohs' Hardness (Grade)		9	9	≥8	≥8
Crushing Strength (MPA)		2100	>2000	>1000	>1000
Abrasion, %		0.0084	0.01	0.011	<0.08
Colour		White	White / Yellow	White	Brown
Raw Materials		Calcined Alumina	Calcined Alumina	Refined Bauxite Powder	Bauxite Powder
Forming Method		Isostatic Pressing	Isostatic Pressing	Impact Briquetting	Handmade

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