Abstract: A fastening arrangement between a riding ring and a casing of a rotary cylinder, whereby the riding ring encircles the casing of the rotary cylinder with clearance, including support elements affixed to the casing of the rotary cylinder and projecting radially outwardly. The riding ring has at least one circular groove on a surface thereof. A plurality of clamping elements are distributed around a perimeter of the riding ring, the distributed clamping elements engaging in a force-fit manner with the circular groove of the riding ring. The clamping elements are connected with the support elements, whereby the riding ring is immobilized in both the axial and circumferential directions relative to the casing of the rotary cylinder. The support elements affixed to the rotary cylinder casing have spring guides oriented axially relative to the rotary cylinder, between each of which is positioned a clamping element tensioned in a force-fit manner on the riding ring.

Abstract: The aim of the invention is fasten a riding ring of a rotary cylinder, particularly of a rotary kiln, whereby the riding ring, apart from the arresting thereof in an axial direction, can also be arrested in its peripheral direction with regard to the rotary cylinder casing without the manufacturing of the riding ring requiring complicated machine processes such as shaving, shaping, the making of through holes, etc. To this end, the invention provides that the riding ring is manufactured only in the form of a turned part, and clamping elements are placed around the riding ring periphery in a distributed manner. Said clamping elements engage in a non-positive manner with peripheral slots of the riding ring and are actively connected to supporting elements that are fastened to the rotary cylinder casing.

Abstract: A compensator (18) is provided for compensating thermal expansions of ducts or pipelines (10) for carrying flows of hot media, especially ducts that are lined with fire-proof material. The compensator (18) is easy to maintain and is relatively simple in its design. This compensator (18) permits inspection of the operability of the expansion gap (19) between adjacent sections of the pipeline (10) and its elastic temperature-resistant jointing material (20) from the outside of the pipeline. The expansion gap (19) in the flame-proof lining is arranged in a cross section plane of the pipeline that is adjacent to but below the cross section plane of the corrugated pipe compensator (18) attached to the steel sheet jackets (15) of adjacent sections of pipeline (10).

Abstract: A hot gas cyclone separator is provided with a segmented dip tube whose smooth sheet metal dip-tube segments have tops which are securely fastened to a cap of the separator in hook like manner by U-shaped angle rails. The adjacent lower ends of the dip-tube segments may also be interconnected by angle rails having U-shaped profiles which serve to protect the lower end of the dip tube from excessive wear caused by the impinging hot gas/solids suspension.

Abstract: In order to create a device like a shuttle sluice for sluicing or distributing a hot meal-form material flow, in particular for cement plant construction, whose shuttle valve or shuttle valves is or are easy and inexpensive to repair or renew in case of wear and tear, a shuttle sluice is provided, whose shuttle valve has at least two parts and comprising of an upper suspension part and a lower expendable part, whereby the upper suspension part and the lower expendable part of the shuttle valve are stiff or rigid, i.e., detachably connected to each other, not hinged or pivoted to each other.

Abstract: A hot gas cyclone separator is provided with a segmented dip tube whose smooth sheet metal dip-tube segments have tops which are securely fastened to a cap of the separator in hook like manner by U-shaped angle rails. The adjacent lower ends of the dip-tube segments may also be interconnected by angle rails having U-shaped profiles which serve to protect the lower end of the dip tube from excessive wear caused by the impinging hot gas/solids suspension.

Abstract: A heat-resistant and wear-resistant insertion element or segment of a segmented dip tube suitable for use in a refractory-lined cyclone of a cement clinker production line. The insertion element, is capable of being fabricated and installed with a length greater than 120 cm, and is distinguished by a long service life. The insertion element may be a composite structure made of a metallic carcass or sheet (10) and a metallic mesh with webs (11) forming lattice-shaped openings which are filled with a heat-resistant ceramic composition (12).

Abstract: Cement clinker production apparatus having a precalcination stage connected upstream of a rotary kiln, in which precalcination stage a CO-containing reduction zone in the rotary kiln off-gas duct is employed for the purpose of reducing the pollutant NOx. In order to make certain that the quantitative ratio of O2 in the rotary kiln off-gas to fuel admitted by a deNOx burner, and thus control the effectiveness of NOx reduction, a pivoting throttle valve (33) is positioned in the precalcination stage to control the quantity of rotary kiln off-gas and thus the O2 content in the kiln off-gas. The throttle valve (33) is positioned in the rotary kiln off-gas duct (15) above the deNOx burner (19), above the raw meal inlet (13), and before the confluence of the tertiary air substream with the rotary kiln off gas.

Abstract: Cement clinker production apparatus having a precalcination stage connected upstream of a rotary kiln, in which precalcination stage a CO-containing reduction zone in the rotary kiln off-gas duct is employed for the purpose of reducing the pollutant NOx. In order to make certain that the quantitative ratio of O2 in the rotary kiln off-gas to fuel admitted by a deNOx burner, and thus control the effectiveness of NOx reduction, a pivoting throttle valve (33) is positioned in the precalcination stage to control the quantity of rotary kiln off-gas and thus the O2 content in the kiln off-gas. The throttle valve (33) is positioned in the rotary kiln off-gas duct (15) above the deNOx burner (19), above the raw meal inlet (13), and before the confluence of the tertiary air substream with the rotary kiln off gas.

Abstract: A heat-resistant and wear-resistant insertion element or segment of a segmented dip tube suitable for use in a refractory-lined cyclone of a cement clinker production line. The insertion element, is capable of being fabricated and installed with a length greater than 120 cm, and is distinguished by a long service life. The insertion element may be a composite structure made of a metallic carcass or sheet (10) and a metallic mesh with webs (11) forming lattice-shaped openings which are filled with a heat-resistant ceramic composition (12).

Abstract: In order to create a cyclone separator with segmented immersion pipe for cement clinker manufacturing system with cyclone suspension type heat exchanger system, whereby the releasable immersion pipe segment fastening is dependable and is distinguished by a long service life, it is inventively proposed to secure the immersion pipe segments at their upper end with releasable screw bolts, whereby the screw bolts are arranged in spacer sleeves distributed around the immersion pipe circumference that respectively comprise at least one window-like opening at the outside for the access of ambient air as coolant for the immersion pipe segment fastening.

Abstract: In order to create a thrust grating cooler whose system for delivering the cooling air to the individually aerated, reciprocally movable grating plate carriers manages without flexible cooling air hose conduits that are susceptible to wear, at least one cooling air channel is provided that moves together with the C-push frame which carries the movable grating plate carriers. The cooling air channel is mounted at the underside of the C-push frame either transversely or parallel with respect to the longitudinal axis of the cooler. The air entry end of the cooling air channel that is co-moved together with the C-push frame is connected to a stationary cooling air delivery nozzle by means of a seal. A plurality of rigid connecting channels branch off from the cooling air channel to the movable grating plate carriers and supply both the carriers and the movable perforated grating plates that are secured thereon with cooling air.

Abstract: In order to create a grate plate design for a thrust grating cooler for cooling hot material such as, for example, cement clinker, this grate plate design has troughs at its upper side for accepting and retaining cool material for the purpose of protecting the grate plate against thermal overload, whereby these troughs are to be supplied with cooling air via cooling air channels arranged therebetween and via air exit slots without the risk of blockage thereof. A grate plate is provided wherein a plurality of cooling air channels that extend up to the upper side of the grate plates and limit the troughs from one another are arranged in the grate plate member parallel to the longitudinal axis of the grate plates, and whereby the partitions between the air channels and the troughs comprise air exit slots proceeding parallel to the longitudinal axis of the plates which are arranged immediately above the bottom plate of the grate plate.

Abstract: A rotary drum for tumbling a granular product therein for heat transfer or drying with arcuate baffles mounted on the inner surface of the drum with the concave surface of the baffles facing outwardly and the baffles having rims at the ends to restrict discharge of material from the baffles and the baffles being offset circumferentially in a trailing downstream direction with openings through the baffles and an angled downstream edge of certain baffles with other baffles having a portion of the downstream edge removed and the baffles formed in two sections hinged to each other with the ends secured to the inner surface of the drum.

Abstract: A rotary kiln construction of the type where a cylindrical kiln is supported for rotation on an annular bearing ring wherein the ring has an inner circumference larger than the outer circumference of the kiln cylinder and a plurality of spacing plates are arranged around the circumference of the cylinder to support the bearing ring concentrically with the cylinder, supporting assemblies for the spacing plates including a support element welded on the cylinder with abutment strips preventing axial displacement of the bearing ring and angle lugs preventing axial displacement of the spacing plates with the support assemblies located axially opposite each other so as to hold the plates between them and permit withdrawal of the plates from either axial direction.

Abstract: The present invention deals with a chute for a kiln intake housing of a rotary tubular kiln or the like, the chute having a lining composed of a refractory material and a double-walled, inwardly facing collar disposed at the lower end thereof, the collar functioning to support the lower end of the refractory lining within its metal jacket and the collar being equipped with a special coolant circulating device. The inner end of the collar is composed of support segments which are connected to each other and to a holding means, the interior space of the collar being subdivided as required in order to provide for an induced circulation of a coolant.