Outokumpu Oyj

Pekka Niemel&auml;

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

Launo L Lilja

Bror G Nyman

Martti Johannes Jankkila

Timo Nivala

Pasi M&auml;&auml;tt&auml;

This invention relates to a cascade-type scrubber, with which the wet scrubbing of the exhaust gas and removal of droplets from the gas can be performed in one and the same scrubber, producing a pure, dropless gas. It is thus essential that the cascade tubing typical of the cascade scrubber and the equipment for droplet removal are combined into a single compact entity, which is formed of several nested chambers.

Compact cascade scrubber for scrubbing exhaust gas

The invention relates to a method for measuring the surface height of a material bed transported on a conveyor belt to continuously operated thermal treatment, i.e. to continuously operated sintering, when said material bed is formed of single spherical and fragile particles. According to the invention, the material bed ( ) formed on the conveyor belt ( ) is illuminated, essentially in the transversal direction of the conveyor belt ( ), by at least one light source ( ), so that the light beam ( ) forms an essentially linear light streak ( ) on the surface of the material bed ( ), and that for registering said light streak ( ), there is used at least one camera ( ) and at least one image processing arrangement ( ) connected to the camera ( ), and that in the image processing arrangememt ( ), the obtained surface height image is compared with a predetermined, desired surface height image in order to detect deviations in the surface height, and that said image processing arrangement ( ) is connected to an automation unit ( ) in order to correct the deviations in the surface height.

Method for measuring the surface height of a material bed conducted on a conveyor belt to thermal treatment

A conveyor belt for a continuously operated conveyor-type thermal treatment of a material bed includes metal conveyor belt elements that are connected to each other. Each conveyor belt element is formed with perforations in order to allow gas to flow through the conveyor belt. The perforations are distributed non-uniformly over the conveyor belt element and are located in at least two perforation zones. The perforation zones are separated from each other by perforation-free zones.

Growing community of inventors

Tornio, Finland

Pekka Niemelä

Growing community of inventors

Tornio, Finland

Pekka Niemel&auml;

Pekka Niemelä