Abstract: Apparatus for compacting loose, spongy or disintegrated solid material in which a pair of conveyor surfaces, one of which is fluid-pervious but solid-impervious, are disposed in convergent spaced relation with one another to form a compacting zone. Fluid is removed from the compacting zone through the fluid-pervious conveyor surface. Material to be compacted is supplied to the divergent end of the compacting zone while the surfaces are moved towards the convergent end of the compacting zone to cause the material to be compacted.