Valmet Technologies Oy

Upm-Kymmene Corporation

Lauri Talikka

Petteri Vuorio

Antti Raukola

Jari Heikkinen

Esa Hassinen

Jari Saarinen

Markku Halinen

Matti Tikka

Kaj NORDBÄCK

Andreas RÖNNQVIST

A single-disc refiner () has a stationary refining element () and an opposed rotatable refining element (), each of which has a radially inner blade element () providing an inner refining surface area and a radially outer blade element providing an outer refining surface area. The inner and outer refining surface areas of each refining element together provide a refining surface of the refining element, the refining surfaces defining a feed zone () followed by a treatment zone () with a transition point therebetween located at a radial distance of 70-90% from the center of the refiner or at a radial distance of 50-80% from the innermost edge () of the refining element or at a radial distance of 20-50% from the inner edge () of the outer blade element () towards the outermost edge () of the refining element.

Single-disc refiner

Growing community of inventors

Lappeenranta, Finland

Lauri Talikka