Outokumpu Technology Oy

Lauri Mustikka

Eero V&auml;&auml;n&auml;nen

Martti Johannes Jankkila

Eero Vaan&auml;nen

Pekka Rantala

The invention relates to a roller screen for screening pellets for sintering, the roller screen including several successive rotating rollers that are spaced apart and arranged transversally in relation to the proceeding direction of the material. The roller screen is provided with separate rotation motors for rotating each of the rollers and an adjusting member for adjusting the mutual position of the rollers in order to screen a desired particle size. The screen path of the roller screen is composed of three successive screening parts, which are mutually connected so that the rollers of the screening parts are made to rotate in relation to each other, and the speed of rotation of the roller increases in the proceeding direction of the material towards the final end of the roller screen.

Roller screen

The invention relates to an apparatus for conducting gas through material (,) to be sintered, which material is set in an essentially continuous motion, particularly when gas is used for sintering the material; said apparatus comprises a flow guide (,) for conducting gas essentially near to the material (,) to be sintered, and a gas collecting member (,) for collecting the gas that has been made to penetrate the material to be sintered. According to the invention, in the gas flow guide (,) the gas inlet (,) is located centrally with respect to the material (,) to be sintered, and the gas outlet (,) extends essentially over the whole material to be sintered in the transversal direction, when observed in the proceeding direction of said material; and the gas collecting member (,) is composed of funnel elements (,), which are installed essentially at the gas flow apertures (,) provided in the member for conveying the material to be sintered.

Growing community of inventors

Tornio, Finland

Lauri Mustikka