Means for producing a suspension of a powdery substance and a reaction gas
AssigneeOutokumpu Oy
InventorsLauno L. Lilja, Valto J. Makitalo
Life of this patent
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Abstract
A suspension of a powdery substance and a reaction gas is formed by allowing the powdery substance to fall as an annular flow into a reaction space, feeding the reaction gas downwardly to encircle the annular flow of powdery substance, the kinetic energy of the annular flow of descending powdery substance being utilized towards its gradual spreading to the sides with the aid of a sliding surface disposed within the reaction space, so that the flow of powdery substance which has been spread to be laterally directed will meet the reaction gas flow substantially at right angles in the reaction space.
Claims8
An apparatus for forming a suspension of a powdery substance and a reaction gas, comprising a first supply tube for the powdery substance adapted to be inserted through the reaction gas entrance aperture in the upper part of a reaction chamber and directed downwardly into the reaction chamber, a second supply pipe for the gas and, extending centrally downwardly from the first supply tube, at least one sliding surface projecting gradually outwardly from its central axis, the terminal edge of which is substantially horizontal, further comprising, below the terminal edge of the sliding surface, one or several substantially horizontally directed apertures for injecting dispersion gas jets into the flow of powdery substance discharging from the sliding surface.
Dependencies are inferred from the claim text.