Apparatus for drying organic material, particularly brown coal

Apparatus for drying organic materials, particularly brown coal, by means of steam and of hot water, comprising a space maintained under a pressure exceeding atmospheric pressure, through which space the organic materials are fed in form of a sludge or suspension and in which space the organic materials are at least partially separated from the water, characterized in that at the upper end of the space maintained under a pressure exceeding atmospheric pressure at least one supply opening is provided, that at the lower end of said space at least one discharge opening for solid materials is provided, that a steam supply line opens into the lower end of said space and in that between said supply opening and said discharge opening sieves are obliquely arranged which are roofing chambers limited by water-impermeable walls and having drain channels connected thereto and in that further a plurality of sieves is arranged in the manner of cascades one above the other, the bottom edges of the sieves being located above the most elevated area of the sieve arranged immediately below each sieve considered.