Uhde Gmbh

Rheinbraun Aktiengesellschaft

Jöst Gmbh + Co. Kg

Manfred Kreft

Wolfgang Hillebrand

Hartmut Hederer

Harmut Hederer

Hans-Joachim Klutz

A device for heating or cooling of bulk material including two pairs of vibrating chutes, with each pair being formed of two oppositely inclined chutes mounted one above the other and with each pair being equipped with a unidirectional vibrator, and with vibrating chutes of each pair being connected with a plurality of pairs of oppositely inclined articulated bars, and with vibrating chutes being equipped with flow ducts connected with each other in such a way that heating or cooling medium flows in the flow ducts of the vibrating chutes of each pair in the same direction so that in one chute the directions of flow of the heating or cooling material coincide with the flow of bulk material, and in the other chute they flow in opposite directions.

Device for heating or cooling bulk materials, particularly for lignite

A resonant vibrating conveyer is disclosed which has a vibratory drive and spring supports connecting the trough with an intermediate frame which is, in turn, attached to a foundation via springs. The forces transmitted to the foundation are reduced to a minimum while permitting a relatively light-weight construction of the conveyer. This is achieved by arranging first pre-loaded springs with countervibrating masses acting at the point of attachment of second pre-loaded springs between the conveyer trough and the intermediate frame.

Resonant vibrating chamber

Bulk material containing vaporizable ingredients, such as lignite, hard coal, peat, waste wood, clarifier sludge, waste sludge, contaminated earth, catalysts, zeolites and filter cake, is conditioned by means of a vibrating plate conveyor divided into a heating section and a drying section, using an indirect heat exchange method. The bulk material is heated in an enclosed heating section while withdrawing the vapor from this section. In the downstream enclosed drying section, the vaporizable fractions contained in the bulk material are further reduced with the aid of heat supplied indirectly, the vapor being withdrawn. The bulk material is separated several times into coarse and fine fractions utilizing at least one slotted grid, the fines being immediately recycled and remixed with the coarse fractions which have a higher water content. The bulk material is mixed several times while being heated in the drying section before discharge. Substantial improvement in the conditioning of bulk material having a wide grain size distribution is achieved by adding fine-grain auxiliary material to the bulk material containing vaporizable fractions in a very early stage of the process.

Process and device for conditioning bulk material

Bulk material containing vaporizable ingredients, such as lignite, hard coal, peat, waste wood, clarifier sludge, waste sludge, contaminated earth, catalysts, zeolites and filter cake, is conditioned by means of a vibrating plate conveyor divided into a heating section and a drying section, using an indirect heat exchange method. The bulk material is heated in an enclosed heating section while withdrawing the vapor from this section. In the downstream enclosed drying section, the vaporizable fractions contained in the bulk material are further reduced with the aid of heat supplied indirectly, the vapor being withdrawn. The bulk material is separated several times into coarse and fine fractions utilizing at least one slotted grid, the fines being immediately recycled and remixed with the coarse fractions which have a higher water content. The bulk material is mixed several times while being heated in the drying section before discharge.

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Wetter, Germany

Manfred Kreft