A/s Niro Atomizer

Svenska Traforskningsinstitutet

Bo Norman

Karsten S Felsvang

Karl E Hansen

Erik Liborius

Klaus Moller

Geoffrey G Duffy

Alfonso De Ruvo

Karl-Johan Grundstrom

A centrifugal screening apparatus is provided with screen cleaning means including rotating nozzles which clean the screen of the apparatus by suction.

Method at screening apparatus for cleaning the apertures in a screen

A method and system for separating an aqueous suspension containing fibrous particles into fractions of different average characteristics. The suspension to be separated is supplied to a separator disc rotating in a horizontal plane in the upper part of a chamber, in which collecting means are arranged in different zones to receive material dispersed from the disc. The method and system are effective for the separation of paper pulp suspensions such as groundwood pulp, chemical pulp, sediment or waste paper pulp into fractions of different fibre size and for the cleaning of paper pulp suspensions for impurity particles such as sand, shives and splinters. Another field of application is the separation of mineral wool suspensions into fractions consisting mainly of fibrous and spherical particles, respectively.

Method and a system for separating an aqueous suspension containing

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Johanneshov, Sweden

Bo Norman