Abstract: A dual-shaft shredder for comminuting solids or solids in liquids comprises a housing defining an interior comminuting space, an inlet opening, an outlet opening, and a first and second cutting disc block each having a plurality of cutting discs disposed on a hub body such that an intermediate space is present between each two adjacent cutting discs. Some of the first cutting discs each engage in the intermediate space between two adjacent second cutting discs and some of the second cutting discs each engage in the intermediate space between two adjacent first cutting discs. A first shaft stub and a second shaft stub extend into an axial recess of the first and second cutting disc blocks for transmitting torques, and a first clamping device and a second clamping device clamp the shaft stubs against the cutting disc blocks.

Abstract: A yoke air seal assembly for sealing a vertical pulverizer yoke includes a yoke seal housing ring having a plurality of circumferential segments mounted together end to end in a ring. A seal ring is mounted radially inside the housing ring. The seal ring has a radially inner face having a plurality of grooves defined therein for forming a labyrinthine air seal against a pulverizer yoke. The seal ring can be segmented into a plurality of circumferential seal ring segments. The segmented ring configuration facilitates installation and replacement of yoke seal components, increases operational lifetime thereof, and reduces down time for such installation and replacement.

Abstract: A roller mill includes a substantially horizontal grinding table, at least one roller operating interactively therewith which is configured for rotation about its centerline by means of a roller bearing and being connected to a roller shaft. The roller mill also includes a force device for at least partial absorption of an axial force originating at least from the roller and acting in the longitudinal direction of the roller shaft. The force device comprises a first part mounted on a machine component which is stationary relative to the longitudinal direction of the roller shaft and a second part mounted on a machine component rotating about the centerline of the roller and co-rotating therewith. The first and second parts comprise opposing pressure surfaces which both extend substantially perpendicular to the longitudinal direction of the roller shaft and form between them a compartment.

Abstract: A roller mill for grinding particulate material such as cement raw materials, cement clinker and similar materials comprises a mill housing surrounding a substantially horizontal grinding table, a number of rollers each rotating about a roller shaft and configured for interactive operation with the grinding table and at least one mechanism or device for introducing gases into the mill housing. The at least one mechanism or device for introducing gases into the mill housing comprises an annular duct having openings in a wall facing the grinding table and being located around the outer circumference of the grinding table. As a consequence hereof, a significant reduction of the pressure loss in a roller mill and thus a significant reduction of energy consumption will be ensured.

Abstract: A roller mill for grinding particulate material such as for example cement raw materials, cement clinker and similar materials, said roller mill comprising a mill housing enclosing a grinding table and a set of rollers rotatable about a vertical shaft. The set of rollers are configured for interactive operation with the grinding table and comprising a number of rollers each rotating about a roller shaft which is connected to the vertical shaft via a hinged connection with a center of rotation which allows a free circular movement of the roller in upward and downward direction in a plane comprising the centerline of the roller shaft. The center of rotation of the hinged connection in a vertical plane is located under the centerline of the roller shaft.

Abstract: An object of the present invention is to continuously feed an object to be treated to a high-pressure reactor which treats the object to be treated containing 10 mass % or more of water under high pressure, while preventing backflow of a high-pressure atmosphere from the high-pressure reactor. This is embodied by making a configuration such that the object to be treated is fed to the high-pressure reactor connected to a discharge port of a screw feeder which is provided with a feed unit for the object to be treated and the discharge port on one end side and the other end side respectively and forms a high-pressure atmosphere pressurized to, for example, 2 MPa or higher, while air-tightness between the high-pressure atmosphere and the one end side of the screw feeder is maintained by a sealing action of an accumulation compressed on the other end side of the screw feeder.

Abstract: A roller mill for grinding particulate material, such as cement raw materials, cement clinker and similar materials has a rotatable grinding table with a substantially vertical centerline and a number of rollers being configured for interactive operation with the grinding table and turning about separate roller shafts which are fixed to a rotatable center shaft with a substantially vertical centerline. The center shaft and the grinding table are fixed one to the rotor and the other to the stator of the same motor, which may have the capability of rotating both the grinding table and the center shaft.

Abstract: A roller mill (1) for grinding particulate material such as cement raw materials, cement clinker, coal and similar materials, said roller mill (1) comprising a substantially horizontal grinding table (3) and a set of rollers revolving about a vertical shaft (5); said set of rollers comprising a number of rollers (4) rotatable about respective roller axes and being connected via a roller bearing (16) and a roller shaft (6) to the vertical shaft (5), and said set of rollers (4) being configured for interactive operation with the grinding table (3) for application of pressure to the particulate material; characterized in that each roller bearing (16) across its entire axial extent is axially located radially towards the vertical shaft (5) inwardly of the location of the resulting force from the grinding zone imposed upon the respective roller, in use.

Abstract: An apparatus for manufacturing toner is provided which includes a pulverizer for pulverizing a material into particles, a classifier for classifying the particles by size, a discharging path for discharging the particles from the pulverizer to the classifier, a returning path for returning relatively coarse particles among the classified particles from the classifier to the pulverizer, and a handling unit for handling particles. A method for manufacturing toner is also provided which includes pulverizing a material into particles in a pulverizer, discharging the particles from the pulverizer to a classifier via a discharging path, classifying the particles by size in the classifier, and returning relatively coarse particles among the classified particles from the classifier to the pulverizer. The handling unit is provided on at least one of the discharging path and the returning path, and includes a mechanism for preventing accumulation of the particles using airflow.

Abstract: A waste steady-supply apparatus, including: an input hopper for transferring waste envelopes introduced from outside to a waste envelope breaking device; a break-supply assembly that is steadily and continuously breaking the waste envelopes open; and a cutting assembly for additionally cutting and discharging the waste envelope which has not broken enough by the break-supply assembly.

Abstract: A method of recycling asphalt roofing material is provided. The asphalt roofing material is delivered into a treatment chamber of a processor. A heat source is provided to the treatment chamber. Heat energy is transferred from the heat source to the asphalt roofing material to produce a heated product, and the heated product is removed from the treatment chamber.

Abstract: The present invention includes a cutting wheel device for grinding materials, the cutting wheel comprising a plurality of discrete plates mounted on an axle and cutting heads positioned between the plates. The cutting heads having a portion extending beyond the periphery of the plate. Secondary cutters are attached to the cutting head to project over an adjacent discrete plate for keeping debris from lodging between adjacent cutting heads.

Abstract: A light weight, low cost grinder assembly for a pepper grinder includes male and female rotary grinding members spaced to create between them a gap which determines the size of the ground pepper. Each of the male and female members is a composite of a polymer part and a corrugated steel grinding member which is advantageously produced by pressing.

Abstract: Highly-active rubber powder is obtained from old tires by 2-stage pulverisation in an extruder, involving an increase in volume stress to 15-250 MPa at 5-90 MPa/second, pulsating with an amplitude of +/?5-20 MPa and a frequency of 5-600 Hz, and at 90-380° C. (increasing at 50-150° C./sec), followed by a sharp reduction of volume stress at 50-150 MPa/sec. A method for the production of highly-active rubber powder with a specific surface of 0.4-5 m2/g from old tires and scrap vulcanised rubber articles based on various rubbers by 2-stage thermo-mechanical treatment in an extruder. This involves (a) fine pulverisation and (b) sharp reduction of the volume stress.

Abstract: The invention relates to a roller mill for grinding solid material such as cement raw materials and similar materials, said roller mill comprising a substantially horizontal grinding table and at least two rollers which are configured for interactive operation with said grinding table. wherein at least one of said rollers rotates about a stationary shaft connected to a rocker arm pivotally connected to a mill stand which substantially is situated outside said grinding table and therefore does not utilize a mill stand and the remaining rollers do not utilize a mill stand. According to the invention the number of rollers, and thereby the capacity of the mill is increased without introducing more mill stands.

Abstract: An apparatus is described for detecting the early signs of cycle-induced fatigue and thereby predicting failure of the rotating disk in turbo-machinery. It identifies asymmetrical growth of hub-blade diameter as a predictor of incipient crack growth. Tip measurements are processed through specialized algorithms to detect such asymmetry during operation, providing a real-time, non-destructive method of prediction. The sensors can be housed within the machinery case, and are capable of operating in harsh environments while maintaining adequate stand-off distance, making the entire apparatus robust enough for conditions in high-speed turbo-machinery.

Abstract: A coal mill introduces raw coal between a roller and a ring and pulverizes the raw coal. A reduction gear for a mill is provided in a lower portion of the coal mill. A cooling fan is mounted to an input shaft of the reduction gear for the mill which is connected to a motor. A radiator for cooling a lubricating oil which lubricates within the reduction gear for the mill is arranged in an extending portion of the input shaft. An oil pump and a line filter are provided in a lubricating passage which supplies the lubricating oil to the radiator, and a flexible pipe connects between these elements. Accordingly, the coal mill is cooled by air.

Abstract: To reduce the manufacturing costs of air-swept roller mills and comparable mills and for optimizing the grinding and classifying processes via the flow direction of the fluid-grinding material mixture, according to the invention a blade ring is provided, which has pivotable guide blades. The blade ring is constructed as a polygon blade ring in segment form with at least one outer jacket ring or outer ring, which is constructed in segmented, polygonal manner and comprises a plurality of outer polygon segments formed from planar sheet metal blanks. One or more pivotable guide blades can be arranged with an upper, lower or central pivot axis on the polygon segments and can be pivoted and locked with no or few stages.

Abstract: To reduce the manufacturing costs of air-swept roller mills and comparable mills, according to the invention a segmented polygonal blade ring is provided, which is manufactured from a plurality of polygon segments, which have planar surfaces and are preferably cut to size from metal sheets. To individual polygon segments can in each case be fixed with a predeterminable inclination one or more guide blades. Preferably an outer polygon segment an an inner polygon segment with at least one guide blade form a polygon segment. Polygon segments can be linked to polygon runs and the latter to polygon blade rings with different diameters.

Abstract: A glass crushing machine and glass crushing system comprise a cylinder crushing chamber 2; a powder and particle collecting chamber 4 formed to be cylindrical and disposed downward of the crushing chamber 2; a funnel-like crushed substance collecting portion 5 disposed at the powder and particle collecting chamber 4; a porous bottom plate 7, detachably and attachably disposed between the crushing chamber 2 and the powder and particle collecting chamber 5, having a number of pores and divided into a plurality of segments; a drive shaft 8 disposed at a roughly middle part of the crushing chamber 2; a roller rotating shaft 10 connected to the drive shaft 8 via a connection member; crushing rollers 11 rotatably fitted to the roller rotating shaft 10 and having crushing elements 12 consisting of rows of square columns formed in duplex on the outer circumferential surface.

Abstract: A method of controlling the operation of the bowl mills in a coal-fired steam generating power plant is disclosed; and in particular a method of controlling the operation of such bowl mills such that the furnace of a steam generating power plant can more rapidly respond to abrupt changes in the demands placed upon the output of the furnace due to abrupt changes in the power requirements of an electric power grid.

Abstract: A ball or grindstone crusher comprises a frame including a support and a table mounted on the frame support for rotation about a vertical axis, and table having arranged thereon an annular track and the frame support extending in a plane below the annular track. Balls or grindstones are rollingly supported on the track and are pressed thereagainst. A first series of bearings supports the table on the frame support and a second series of bearings is disposed at the same level as the first series of bearings. The table has a skirt defining a cylindrical surface coaxial with the annular track and the second series of bearings bears against the cylindrical surface and thereby maintains the table in a stable lateral position with respect to the axis of rotation.

Abstract: A roller mill assembly includes a separator disposed above a roller mill housing, and an exhaust air duct above the separator. The sieve is movable horizontally from between the mill housing and the exhaust air duct on a crane track.