Klockner-humboldt-deutz Ag

Werner Hasse

Karl-Heinz Weiffen

Werner Strauss

Karl-Heinz Unkelbach

Hans Bender

Roland Pfeiffer

Helmut Timmermann

Friedhelm Heubner

A method and apparatus for treating minerals such as coal in a jig bed having a downwardly opening air chamber beneath the bed wherein the chamber has an air compartment at the upper end retaining a cushioned pillow of air between each jig pulsation with controlled air admitted and relieved from the chamber so that when air is relieved, the water rising in the chamber compresses the air at the upper end and a cushion of air is retained so that with admission of pressurized air, the cushion aids in forcing the column of water from the chamber, particularly at the beginning of operation of the jig.

Air pillow in the air chambers of a bottom pulsed jigging machine

An automatic control for an electropneumatic wet settling machine, for the separation of mineral mixtures, in particular coal, through the pulsation of the separating liquid, provides that the separating liquid is energized and controlled by means of compressed air in pulsing chambers, and that measuring devices for measuring the movement of the separating liquid are provided to signal, advantageously on an analog basis, the movement of the separating liquid in order to control the introduction and exhaust of compresssed air from the pulsing chambers.

Automatic control for electro-pneumatic wet settling

A method for reducing the sulfur content of coal which involves an integrated, continuous process including the steps of grinding the coal in a dry state, activating the ground coal to increase substantially the magnetic susceptibility of the pyrite contained therein, and separating the thus activated pyrite magnetically from the remainder of the coal.

Method for the desulfurization of coal

Growing community of inventors

Bochum, Germany

Werner Hasse