Method in thickening a fiber suspension in a thickening...

Details Method in thickening a fiber suspension in a thickening... Method in thickening a fiber suspension in a thickening...

D - Textiles, Paper

21

C

182/19

D21C 9/18 (2006.01) D21F 1/66 (2006.01) D21G 9/00 (2006.01)

Patent

CA 1255237

APPLICANT: N. A. LENNART WIKDAHL TITLE: METHOD IN THICKENING A FIBER SUSPENSION IN A THICKENING APPARATUS ABSTRACT OF THE DISCLOSURE A method in thickening a fiber suspension in a thickening apparatus working under pressure and including an inlet for the fiber suspension and an outlet for a substantially fiberfree fraction, a supply conduit being connected to the inlet,and a discharge conduit being connected to each of the outlets. The flow in the discharge conduit for the fiber-rich fraction is regulated via a valve in the discharge conduit. Regulation is done on the basis of measuring a physical para- meter of the fiber fraction with the aid of a transducer. The measured value is compared with a criterion value, and if there is a difference, the flow through the discharge conduit is changed to approach the criterion value.

463374

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