Patents Assigned to Krupp Polysius AG
  • Matrix-ring magnetic separator
    Patent number: 4737294
    Abstract: The invention relates to a matrix ring magnetic separator the induction bodies of which are formed by sieve nettings which are arranged vertically and stacked behind one another in the direction of the magnetic field in such a way that the intersections of the wires of one sieve netting are located on the free field of the adjacent sieve netting resulting in the formation of sieve netting assemblies which are springy in themselves in the direction of the magnetic field. Even at very high field strength gradients such a magnetic separator is distinguished by good possibilities for cleaning and can also be produced economically.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: April 12, 1988
    Assignee: Krupp Polysius AG
    Inventor: Karl-Heinz Kukuck
  • Apparatus for cooling hot material
    Patent number: 4732561
    Abstract: In apparatus for cooling hot material, a material transfer stage is provided in the material inlet of a cooler and acted on by cooling air. The transfer stage has a plurality of air-permeable carrier elements spanning the breadth of the inlet. At least one group of the carrier elements is arranged with a downward and forward inclination of approximately 10.degree. to 20.degree. in the direction of material transport. The carrier elements have forwardly facing sides provided with openings through which cooling air may pass.
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: March 22, 1988
    Assignee: Krupp Polysius AG
    Inventors: Karl Eiring, Manfred Durr, Heinz-Herbert Schmits
  • Apparatus for crushing brittle material for comminution
    Patent number: 4732334
    Abstract: The invention relates to apparatus for crushing brittle material for comminution which is subjected to individual grain crushing and material bed crushing in a roll crusher at high pressure and with agglomerates being formed, these agglomerates being loosened in the sifter with the aid of a separate arrangement and removed from the crushing system. In this way a crushing stage which is provided for further crushing has its load significantly reduced and as a result the apparatus is rendered considerably more economical.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: March 22, 1988
    Assignee: Krupp Polysius AG
    Inventors: Manfred Muller, Gerhard Gudat
  • Method of calibrating a pneumatic conveying apparatus
    Patent number: 4730957
    Abstract: A method of calibrating a pneumatic conveying apparatus wherein, with the material supply interrupted, a conveying pressure is numerically integrated and the reduction in the filling weight occurring in a specific period of time is determined. Before the beginning and at the end of the integration it is determined whether the filling weight is falling approximately evenly, i.e., whether any disturbing dynamic forces are overlying the filling weight. Such a calibration method permits alterations in the conveying capacity during the calibration.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: March 15, 1988
    Assignee: Krupp Polysius AG
    Inventor: Franz-Josef S. Adrian
  • Apparatus for the heat treatment of fine material
    Patent number: 4720262
    Abstract: Apparatus for the heat treatment of fine material comprises a multi-stage cyclone preheater, a rotary kiln and a calciner supplied with tertiary air from a cooler for precalcination of the preheated fine material. The tertiary air pipe is narrowed at the point where it joins into the calciner. In this way an intensification of the mixing together of material, fuel and gas is achieved as well as an improved combustion, particularly fuels which are slow to react.
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: January 19, 1988
    Assignee: Krupp Polysius AG
    Inventors: Manfred Durr, Karl Krutzner, Heinz-Werner Thiemeyer, Jurgen Wurr, Peter Tiggesbaumker, Wolfgang Rother
  • Method and apparatus for the crushing of material
    Patent number: 4709864
    Abstract: The invention relates to a method and to apparatus for the crushing of material to be comminuted by means of a material bed roll mill, in which such material is forcibly delivered in a regulable mass flow to the roll gap. In this way even materials which tend to slip on the rolls can be crushed satisfactorily. It is also possible to keep the nature of the product constant over a wide range of variations in the throughput.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: December 1, 1987
    Assignee: Krupp Polysius AG
    Inventors: Heinrich Henne, Norbert Patzelt, Lutz T. Schneider, Osbert Knobloch, Manfred Muller
  • Roller mill
    Patent number: 4694994
    Abstract: The invention relates to a roller mill with a sifter arranged above it which is provided with a deflecting rotor and an adjustable ring of guide vanes. Such a construction is distinguished by a particularly high degree of separation.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: September 22, 1987
    Assignee: Krupp Polysius AG
    Inventors: Heinrich Henne, Gotthardt Blasczyk, Hubert Eickholt, Ludger Lohnherr
  • Sifter
    Patent number: 4693811
    Abstract: The invention relates to a sifter having a dispersing plate which has material passage openings therein. The dispersing plate carries guide elements and distributor elements adjacent such openings which are inclined with respect to the radius of the plate. Such a dispersing plate makes it possible to feed the material to be sifted into the sifting chamber very evenly.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: September 15, 1987
    Assignee: Krupp Polysius Ag
    Inventor: Ludger Lohnherr
  • Disperser for a flotation system
    Patent number: 4692244
    Abstract: The invention relates to a disperser for a flotation system, in which the stabilizer plates are provided with holes and are offset by a specific angle against the direction of rotation of the agitator relative to a substantially radial position with respect to the agitator. By this arrangement of the stabilizer plates a significant improvement in the selectivity is achieved, particularly in the case of materials which are difficult to prepare.
    Type: Grant
    Filed: November 15, 1984
    Date of Patent: September 8, 1987
    Assignee: Krupp Polysius AG
    Inventors: Armin Supp, Rainer Nebe
  • Methods and apparatus for two-stage crushing
    Patent number: 4690335
    Abstract: A method and apparatus for two-stage crushing of material wherein the material is subjected to crushing first in a constant speed roll mill and then in a second mill. Grit resulting from the crushing is returned to the first mill in a proportion to maintain the filling level of combined fresh material and grit substantially constant even when the quantity of such fresh material changes.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: September 1, 1987
    Assignee: Krupp Polysius AG
    Inventors: Tyark Allers, Gotthardt Blasczyk
  • Driving apparatus
    Patent number: 4681021
    Abstract: A driving apparatus for producing a to-and-fro movement and having four plunger cylinders and four external non-return valves. Such driving apparatus is distinguished by a particularly simple construction.
    Type: Grant
    Filed: May 7, 1986
    Date of Patent: July 21, 1987
    Assignee: Krupp Polysius AG
    Inventors: Otto Heinemann, Heinz-Herbert Schmits
  • Coke oven door
    Patent number: 4676873
    Abstract: A coke oven door having a door body, a door stop support connected to the door body and a levelling closure for closing a levelling opening in the door body. To compensate for differing deformations, particularly in the region of the levelling closure and the door body, the levelling closure is constructed as a separate levelling box fixed on the door stop support and is connected to the door body by an adjustable slidably movable connection.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: June 30, 1987
    Assignee: Krupp Polysius AG
    Inventors: Friedhelm Haaf, Mutien-Marie Renverse
  • Method and apparatus for the production of cement clinker with a low alkali content
    Patent number: 4667886
    Abstract: A method of producing cement clinker with a low alkali content, in which the presence of deposits in the rotary kiln is monitored using measuring techniques and in the event of deposits being present the coarse material above a certain grain size is removed from the system.
    Type: Grant
    Filed: July 18, 1985
    Date of Patent: May 26, 1987
    Assignee: Krupp Polysius AG
    Inventors: Georg Unland, G/u/ nter Driemeier
  • Tube mill
    Patent number: 4664322
    Abstract: The invention relates to a tube mill in which the cylinder of the drying chamber and the transition wall which it supports are divided centrally or a number of times in the axial direction so that this cylinder and the transition wall can be replaced without the grinding elements having to be removed from the grinding chamber.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: May 12, 1987
    Assignee: Krupp Polysius AG
    Inventors: Heinrich Henne, Norbert Patzelt, Karl-Heinz Alker
  • Percussion jig
    Patent number: 4663031
    Abstract: The invention relates to a percussion jig in which the chutes for receiving and discharging the material to be separated are each divided into a plurality of individual chute segments arranged spaced from one another so that the spaces between adjacent individual chute segments facilitate a free equalization of the levels of the settling fluid during the upward and downward movements of the settling tank.
    Type: Grant
    Filed: February 3, 1986
    Date of Patent: May 5, 1987
    Assignee: Krupp Polysius AG
    Inventors: Otto Heinemann, Hans-Hermann Nanz, Gunter Milewski, Norbert Schroder
  • Cyclone construction
    Patent number: 4662909
    Abstract: A cyclone separator construction has a gas supply pipe which joins a horizontal inlet spiral of the cyclone and is inclined downwadly at an angle of between 30 degrees and 70 degrees with the horizontal. In this way disruptive material deposits in the inlet region of the cyclone are avoided.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: May 5, 1987
    Assignee: Krupp Polysius AG
    Inventor: Manfred J. Durr
  • Device for shutting off a pipe
    Patent number: 4660805
    Abstract: The invention relates to a device for shutting off a pipe using generally U-shaped spring steel strips as sealing elements, each such element comprising a pair of arms which converge toward one another form an arcuate web at an acute angle. The deformation of the two flat arms of these sealing elements is limited by two flat, rigid rolling surfaces which are tangential to the web. Such a construction is distinguished by satisfactory functioning and a long working life.
    Type: Grant
    Filed: July 18, 1985
    Date of Patent: April 28, 1987
    Assignee: Krupp Polysius AG
    Inventors: Franz D. Hahn, Otto Heinemann, Heinz-Herbert Schmits
  • Ceiling and wall construction
    Patent number: 4628657
    Abstract: For gas-tight lining of a chamber which is exposed to high temperatures a ceiling and wall construction is provided which is assembled from support bars, rows of profiled bearing bricks supported thereon and central bricks inserted between these rows of bearing bricks and profiled to fit together with these bearing bricks. Support bricks which are also suitably profiled are inserted between the bearing bricks on the one hand and the central bricks on the other hand, and the central bricks have a truncated pyramid shape which tapers towards the interior of the chamber to be lined. All bricks in the construction can be replaced individually in a simple manner.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: December 16, 1986
    Assignee: Krupp Polysius AG
    Inventors: Bodo Ermer, Dieter Mischorr
  • Method and apparatus for the heat treatment of fine-grained material
    Patent number: 4616575
    Abstract: A method and apparatus for the heat treatment of fine-grained material wherein the degree of efficiency of the last cyclone of a multi-cyclone preheater preceding a filter is reduced in the finest grain size range and at least a proportion of the filter dust deposited in the filter is passed directly to the calciner. In this way material is prevented from caking and flowing in batches in the apparatus.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: October 14, 1986
    Assignee: Krupp Polysius AG
    Inventor: Hans-Gerd Schulte
  • Method of operating grinding apparatus and grinding apparatus operating according to this method
    Patent number: 4598872
    Abstract: The invention relates to grinding apparatus and a method of operating such apparatus in which the gas speed in the nozzle ring of the mill is altered as a function of the power consumption of the bucket conveyor so that the quantity of material conveyed by the bucket conveyor and the gradation of grain sizes thereof are kept constant. A control circuit alters the material supply to the mill when the gas speed in the nozzle ring exceeds a predetermined maximum value or falls below a predetermined minimum value.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: July 8, 1986
    Assignee: Krupp Polysius AG
    Inventors: Heinrich Henne, Ludger Lohnherr, Peter Rittscher, Walter Holz