Waagner-biro Aktiengesellschaft

Interlicense Den Haag B.v.

Erich Eigner

Device and process for the aerobic treatment of organic substances

Apparatus for lining the shell of a tumbling mill and anchoring liner plates by wedge-shaped elements include a lining system including a plurality of spaced liner rings constituted by interfitted liner plates and securing rings each having a wedge-shaped cross-section and being situated between a pair of adjacent liner rings so that each liner ring is retained in position by a pair of securing rings and wherein the securing rings are fixed to the shell of the tumbling mill, such as by bolts or the like.

Anchorage of the liner plates in tumbling mills by means of wedge-shaped

A tumbling mill such as a tube or ball mill, wherein an outer shell is provided with an interior liner made up of a series of rings surrounding and distributed along the axis of the shell and each defining and surrounding an interior hollow milling space which has the cross section of a star with rounded points, in a plane normal to the shell axis, with this space having sharp corners extending inwardly toward the shell axis and alternating with the rounded points. The series of rings which form the liner in the shell are angularly offset one with respect to the next in a haphazard, non-uniform manner, and the configuration of the star-shaped space which is surrounded by each ring is that of a pair of superposed squares which have rounded corners and which are angularly offset one with respect to the other so that the rounded corners of one square alternate with the rounded corners of the other square to provide the space which is surrounded by each ring with the configuration of an eight-pointed star having rounded points.

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Lodersdorf, Austria

Erich Eigner