A novel dry pulverizer for low cost production of powders

Spitas, V; Makris, P; Founti, M

dc.contributor.author	Spitas, V	en
dc.contributor.author	Makris, P	en
dc.contributor.author	Founti, M	en
dc.date.accessioned	2014-03-01T01:14:20Z
dc.date.available	2014-03-01T01:14:20Z
dc.date.issued	1999	en
dc.identifier.issn	0272-6351	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13001
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Grinding (comminution)	en
dc.subject.other	Grinding mills	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Minerals	en
dc.subject.other	Particle size analysis	en
dc.subject.other	Particles (particulate matter)	en
dc.subject.other	Surface properties	en
dc.subject.other	Dry pulverizer	en
dc.subject.other	Superfine milling	en
dc.subject.other	Powders	en
dc.subject.other	mineral	en
dc.subject.other	article	en
dc.subject.other	compression	en
dc.subject.other	cost	en
dc.subject.other	dry powder	en
dc.subject.other	equipment	en
dc.subject.other	force	en
dc.subject.other	industry	en
dc.subject.other	particle size	en
dc.subject.other	particulate matter	en
dc.subject.other	priority journal	en
dc.subject.other	shear stress	en
dc.title	A novel dry pulverizer for low cost production of powders	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/02726359908906814	en
heal.identifier.secondary	http://dx.doi.org/10.1080/02726359908906814	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	The paper presents the principles of a prototype dry pulverizer particularly suited for industrial applications together with performance tests demonstrating its advantages. The pulverizer offers considerable advantages when compared to commonly used comminution processes, especially in the fine and superfine milling of minerals. The originality of the pulverizer lies mainly in that it allows the variation of the ratio of the shear to the compression forces acting on a particle during its pulverization. The ratio is adjusted to the mechanical requirements of the material to be pulverized. Instead of a single roller or balls, the pulverizer employs several annular rings, thus allowing better grinding of the finer fractions of the original material. The adjustment of the operational conditions to the mechanical properties of the material to be pulverized and the increase of the 'active' surface of the pulverizer are examined in terms of ratio of the work done by normal forces to the total work (due to normal and shear forces).The paper presents the principles of a prototype dry pulverizer particularly suited for industrial applications together with performance tests demonstrating its advantages. The pulverizer offers considerable advantages when compared to commonly used comminution processes, especially in the fine and superfine milling of minerals. The originality of the pulverizer lies mainly in that it allows the variation of the ratio of the shear to the compression forces acting on a particle during its pulverization. The ratio is adjusted to the mechanical requirements of the material to be pulverized. Instead of a single roller or balls, the pulverizer employs several annular rings, thus allowing better grinding of the finer fractions of the original material. The adjustment of the operational conditions to the mechanical properties of the material to be pulverized and the increase of the 'active' surface of the pulverizer are examined in terms of ratio of the work done by normal forces to the total work (due to normal and shear forces).	en
heal.publisher	Taylor & Francis Ltd, London, United Kingdom	en
heal.journalName	Particulate Science and Technology	en
dc.identifier.doi	10.1080/02726359908906814	en
dc.identifier.isi	ISI:000085615100004	en
dc.identifier.volume	17	en
dc.identifier.issue	3	en
dc.identifier.spage	217	en
dc.identifier.epage	228	en