Patents Assigned to Polysius AG
  • Air-controlled settling apparatus
    Patent number: 4597867
    Abstract: The invention relates to an air-controlled settling apparatus having an air vessel within which is a wall that divides the vessel into air supply and air exhaust ducts. Inlet and outlet valves are mounted within the air supply duct and establishes communication between the settling chambers and the air supply and exhaust ducts. The apparatus construction is distinguished by simple construction and low noise in operation.
    Type: Grant
    Filed: February 25, 1985
    Date of Patent: July 1, 1986
    Assignee: Krupp Polysius AG
    Inventors: Otto Heinemann, Heinz-Dieter Baldus, Armin Supp, Hans Nanz, Helmut Thieme, Heinz Rasch
  • Apparatus for separating ferromagnetic particles from a slurry
    Patent number: 4595494
    Abstract: The invention relates to apparatus for separating ferromagnetic particles from a slurry, in which the slurry passes through a tunnel-shaped channel which is surrounded by a magnet coil the iron yoke of which is constructed asymmetrically in such a way that the magnetic field strength in the channel increases from the top towards the bottom.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: June 17, 1986
    Assignee: Krupp Polysius AG
    Inventor: Karl-Heinz Kukuck
  • Grate cooler and method of cooling
    Patent number: 4592724
    Abstract: A grate cooler arranged at right angles to a rotary kiln and having its vertical longitudinal central plane spaced a distance between 10 and 150 cm from the discharge end of the rotary kiln. The zone of the grate cooler lying below the material discharge end of the rotary kiln has more stationary grating plates and more unventilated grating plates per unit area than the laterally adjacent zones of the material receiving end and in the remaining region of the cooler. This results in good protection of the grating plates at the material receiving end and an even distribution of the material over the whole width of the cooler by means of a distribution cone which is kept in motion.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: June 3, 1986
    Assignee: Krupp Polysius AG
    Inventors: Manfred Durr, Georg Unland, Jurgen Wurr, Antonius Vering
  • Method and apparatus for the heat treatment of fine-grained material
    Patent number: 4579526
    Abstract: The invention relates to a method and apparatus for the heat treatment of fine-grained material wherein a precalcination zone formed by the kiln exhaust gas duct of a rotary kiln and into which two branch streams of cooling air which have been subjected to opposing rotational flow are introduced. In this way an equalization of the speed profile over the cross-section of the kiln exhaust gas duct and an improvement in the burning up of the fuel is achieved.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: April 1, 1986
    Assignee: Krupp Polysius AG
    Inventors: Wilfried Kreft, Horst Kretzer, Heinz-Werner Thiemeyer
  • Method of producing cement from raw material containing harmful substances
    Patent number: 4576644
    Abstract: A method of producing cement from raw material containing a harmful substance such as sulphur, alkali and/or chlorine. In order to reduce the circulation of harmful substances a proportion of the gas or material stream is extracted from a zone in the cyclone preheater at which the desired reduction in the content of the harmful substance is achieved with minimum heat loss.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: March 18, 1986
    Assignee: Krupp Polysius AG
    Inventor: Wolf Goldmann
  • Bucket wheel valve
    Patent number: 4571176
    Abstract: The invention relates to a bucket wheel valve heated by hot gas flowing through an axial gas chamber in a rotor which is spaced axially from the side walls of a housing. The spaces between the rotor and the side walls are screened from the exterior in the radial direction by annular members forming extensions of the chamber.
    Type: Grant
    Filed: May 11, 1984
    Date of Patent: February 18, 1986
    Assignee: Krupp Polysius AG
    Inventors: Gerhard Gudat, Gotthardt Blascyk, Friedrich Wingenfeld
  • Percussion jig
    Patent number: 4563271
    Abstract: The invention relates to a percussion jig in which the carrier for material to be separated is freely suspended in the region of its centroidal axis on the piston rod of a hydraulic drive cylinder. This results in a particularly simple construction subject to little wear.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: January 7, 1986
    Assignee: Krupp Polysius AG
    Inventors: Norbert Schroder, Gunter Milewski, Manfred Neusser, Hermann Dorr, Armin Supp, Heinz Rasch, Otto Heinemann, Heinz-Dieter Baldus, Harald Manthey
  • White cement production
    Patent number: 4560412
    Abstract: The invention relates to a method of producing white cement in which a reducing atmosphere is maintained over the entire length of a rotary kiln and precalcination takes place in a preheater supplied with heat exhaust gases from the kiln. Additional fuel is delivered to the preheater in such quantity that the CO contained in the kiln exhaust gases is burnt. As a result the essential reduction processes take place reliably in the rotary kiln without any problems occurring in the preheater as a result of a high CO content.
    Type: Grant
    Filed: March 23, 1984
    Date of Patent: December 24, 1985
    Assignee: Krupp Polysius AG
    Inventor: Paul Weber
  • Rotary kiln with cooler
    Patent number: 4554876
    Abstract: A rotary kiln has a sealable separating gap between the kiln outlet head and an inlet shaft leading to a cooler. In order that the shortest possible drop height for the fired material falling out of the discharge end of the rotating cylinder may be maintained despite the separating gap, interengaging steps and side openings defined thereby are formed in the side walls of the kiln outlet head and the inlet shaft, and sections of the separating gap which run at different heights open into the side openings and the horizontal distance between any two steps lying opposite one another corresponds approximately to the maximum displacement path of the kiln outlet head.
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: November 26, 1985
    Assignee: Krupp Polysius AG
    Inventor: Heinz Grachtrup
  • Method and apparatus for the pneumatic conveyance of fine material
    Patent number: 4545704
    Abstract: A method and apparatus for the pneumatic conveyance of fine material using a conveyor vessel and a storage chamber in which the discharge capacity of the vessel is increased by delivering material from the storage chamber to the conveyor vessel and reduced by delivering material from the conveyor vessel to the storage chamber. Such method and apparatus are distinguished by the capability of altering the capacity without delay, keeping the set conveying capacity constant, and simple calibration.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: October 8, 1985
    Assignee: Krupp Polysius AG
    Inventor: Otto Heinemann
  • Silo for loose material in powder form
    Patent number: 4539782
    Abstract: A silo for loose material in powder form having a base provided with a central conical section projecting upwards to form an annular discharge zone having floor portions inclined in a direction leading to an opening in a discharge chamber and in such manner that the material flows approximately tangentially towards the material discharge openings.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: September 10, 1985
    Assignee: Krupp Polysius AG
    Inventors: Norbert Ahrens, Otto Heinemann, Heinrich Klockenbusch, Wolfgang Kluger
  • Apparatus for the heat treatment of fine-grained material
    Patent number: 4514170
    Abstract: Apparatus for heat treating fine-grained material comprises a rotary kiln into which material is delivered from a multistage preheater that communicates with the kiln via a vertical exhaust gas duct. Treated material is discharged from the kiln to a cooler from which two cooling air ducts extend and communicate with the exhaust gas duct at two vertically spaced zones. Material from the second lowest preheater stage is introduced into the exhaust gas duct adjacent the lower cooling air duct. Fuel is introduced into the exhaust gas duct adjacent each of the cooling air ducts. The apparatus is distinguished by a particularly high degree of deacidification of the raw material and good combustion of the fuel.
    Type: Grant
    Filed: September 19, 1983
    Date of Patent: April 30, 1985
    Assignee: Krupp Polysius AG
    Inventor: Detlev Kupper
  • Process for the production of sintered magnesite from magnesium hydroxide
    Patent number: 4497761
    Abstract: The invention relates to a process for the production of sintered magnesite from magnesium hydroxide in which filter cake is size reduced in a stream of hot air to a certain particle size, after which the material is heated and calcined and the dehydrated powder thus obtained is hot briquetted and introduced hot into the sintering zone. This process is distinguished by its high economy on heat and by the production of a readily sinterable dehydrated powder.
    Type: Grant
    Filed: May 7, 1981
    Date of Patent: February 5, 1985
    Assignee: Krupp Polysius AG
    Inventor: Hans-Gerd Schulte
  • Method and apparatus for heat treatment of fine-grained material
    Patent number: 4492566
    Abstract: Fine-grained material such as raw cement meal is preheated in a multi-stage cyclone preheater, precalcined in a precalcination zone, sintered in a rotary kiln, and cooled in a cooler. Exhaust gases from the kiln are delivered to the precalcining zone and then to the preheater. Tertiary air from the cooler is divided into two streams one of which is mixed with kiln exhaust gases between the kiln and the precalciner and the other of which is delivered directly to the precalciner. The quantity of tertiary air flowing through each branch is regulated to maintain the temperature of the kiln exhaust gases at a selected value.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: January 8, 1985
    Assignee: Krupp Polysius AG
    Inventor: Wilfried Kreft
  • Method and apparatus for mixing fine material
    Patent number: 4491419
    Abstract: A method and apparatus for mixing fine material in which material is extracted from a level located above the cover of a discharge chamber at the base of a mixing silo and returned to the upper part of the silo. Fresh material is delivered to the upper part of the silo, and in a region that is radially inward of that in which the extracted material is returned.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: January 1, 1985
    Assignee: Krupp Polysius AG
    Inventors: Norbert Ahrens, Helmut Daniel, Gerhard Schacknies
  • Apparatus for heat treatment of fine-grained material
    Patent number: 4490109
    Abstract: Apparatus for heat treatment of fine-grained material has a multi-stage cyclone preheater, a rotary kiln, and a gas pipe extending between the kiln and the preheater and forming a calcination zone for precalcining materials entrained in the gas stream. The gas pipe has an upwardly extending pipe section that communicates with an arcuate deflector section and a downward pipe section which extends downwards to and communicates with the lowest cyclone stage. The downwardly extending pipe section of the gas pipe has an extension constructed as a coarse separator so that relatively coarse material particles contained in the mixed gas-material stream are kept away from the lowest cyclone stage of the preheater.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: December 25, 1984
    Assignee: Krupp Polysius AG
    Inventor: Karl Krutzner
  • Device for sealing a ring gear
    Patent number: 4488730
    Abstract: A ring gear mounted for rotation and driven by a pinion which dips into an oil bath is provided on each face with a sealing device. Each sealing device has a conical annulus tapering in a direction away from the ring gear and on which a ring is positioned in spaced relation with the gear. There thus is formed between the gear and each ring an annular oil collecting chamber which leads oil carried upwards by the ring gear back into the oil bath.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: December 18, 1984
    Assignee: Krupp Polysius AG
    Inventor: Heinz Grachtrup
  • Apparatus for extracting and analysing dust-laden gas samples
    Patent number: 4485684
    Abstract: Apparatus for extracting and analyzing dust-laden gas samples and in which a gas extraction connection is constructed in the form of a stilling chamber leading to an analyzer via a three-way valve to which is connected a cleansing air connection. A time control device periodically interrupts the flow of gas to the analyzer and directs cleansing air of the extraction connection.
    Type: Grant
    Filed: October 18, 1982
    Date of Patent: December 4, 1984
    Assignee: Krupp Polysius AG
    Inventors: Rudolf Weber, Horst Riedel
  • Continuous mixing silo and method of operation
    Patent number: 4472062
    Abstract: The invention relates to a continuous mixing silo and a method of operating it for the mixing of fine-grained material. The silo has a base provided with a plurality of zones which are supplied with aerating air in chronological sequence. Individual zones of the base are supplied with additional air in a pulse-like manner at specific intervals of time to achieve intensive aeration and mixing of the material. The additional air is supplied from a storage unit for a shorter period than the aerating air. Air taken from the storage unit is replenished during the time interval between pulses.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: September 18, 1984
    Assignee: Krupp Polysius AG
    Inventors: Gerhard Balzau, Gunter Kompa, Frank Schaberg, Manfred Steinmann, Helmut Kucharski
  • Bearing segment for a sliding shoe
    Patent number: 4466750
    Abstract: A bearing segment for a tiltable and rotatable sliding shoe comprises a base on which is supported a bearing pin having a radial ball and socket joint coupling the pin to the shoe. The ball and socket joint has an inner ring supported on the pin and an outer ring fixed to the shoe. The rings have confronting arcuate surfaces which permit limited relative spherical movement of the rings.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: August 21, 1984
    Assignee: Krupp Polysius AG
    Inventors: Otto Heinemann, Burkhard Heiringhoff, Helmut Lucke, Werner Schossler, Helmut Krumme