Abstract: A vertical roller mill with segmented bull ring and clamping system includes a roller mill base having an internal taper configured for holding a bull ring in grinding position, a cowring dimensioned to be fitted into the internal taper of the base and a clamp ring secured atop the cowring. Each of these has a plurality of apertures spaced and configured so that when fastened together with fasteners, they form a radial landing platform for a plurality of segmented bull ring bricks. The system also includes a plurality of segmented bull ring bricks which, when clamped to the radial landing platform and taken as a whole, form a solid, but readily separable, segmented bull ring suitable for use in a roller mill. The system further includes wedge blocks and fasteners for individually removably clamping the segmented bull ring bricks to the radial landing platform.

Abstract: A planetary roller mill for processing a feed material includes a vessel with a grinding ring having an opening therethrough and a first area. The grinding ring is in sealing engagement with the inside surface of the vessel assembly. At least two non-circular support plates are secured to a rotatable shaft. Each plate has an axially facing surface. A plurality of rollers rotatably are mounted to and positioned between the two support plates. Each of the plurality of rollers are in grinding communication with the grinding surface. The planetary roller mill includes an air supply system having an outlet in communication with the opening in the grinding ring. Areas of the two support plates are of magnitudes which configure a flow area through the opening of at least 30 percent of the first area to provide a predetermined quantity of heated air to remove moisture from the feed material in the grinding assembly.

Abstract: A separator having a separator housing, a separator wheel arranged inside the separator housing and having an axis of rotation (X), and a guide vane assembly arranged in the separator housing, an annular space being provided between the guide vane assembly and the separator housing radially (R) perpendicular to the axis of rotation (X) and a separation zone being provided between the guide vane assembly and the separator wheel, and the guide vane assembly having a plurality of vertical guide vanes. In order to increase separation performance, at least one deflecting element is arranged between at least two adjacent vertical guide vanes and has at least one downward-pointing curved and/or bent portion.

Abstract: A segmented grinding ring for centrifugal vertical roller mills is provided. The segmented grinding ring includes multiple cast segments which may be vaulted together using pin rods and shims to form a continuous ring. The segmented grinding ring enables the manufacture of the segments in a cast composite material.

Abstract: A pendulum mill is described that comprises a mill housing, inside which a drive shaft is arranged. Milling pendulums are suspended at the upper end of the drive shaft, while a driving device which is suspended on the bottom wall of the mill housing is disposed at the lower end of the drive shaft.

Abstract: A multi-sectional roller mill comprises at least two mill sections (2, 2?) each including a plurality of ‘rollers (20, 20?), wherein each mill section includes a-drive shaft (16, 16?) and male and female parts of a coupling element (15) attached to respective ends of said drive shaft for rotation therewith, and wherein the said coupling element provides for rotation between said male and female parts of drive shafts of adjacent mill sections.

Abstract: A roller mill 10 for pulverizing fine material has a grinding mechanism that includes a plurality of grinding rolls 64 and a grinding ring 66 that coact to pulverize material within a mill housing. The grinding ring has an inner grinding surface wherein the inner surface includes an upper vertical portion and inwardly sloped lower portion. The lower portion of the ring provides a means for retaining more fine particles on the ring during pulverizing, as well as an increase in grinding surface. The grinding rolls have a generally cylindrical shape with an outer grinding surface that includes an upper vertical portion and a lower portion of the outer grinding surface. The outer grinding surface of the roll is complementary to the inner grinding surface of the grinding ring.

Abstract: A roller mill for pulverizing material and separating the pulverized material has a mill for crushing the material and a classifier disposed on the mill for separating the crushed material. The mill includes a grinding mechanism that has a plurality of grinding rolls and a grinding ring that coact to pulverize material within a mill housing, which defines a grinding chamber. The classifier is a centrifugal-type classifier having a motor-driven rotor disposed within a classifier housing, which define a classifying chamber. The rotor has a plurality of blades that extend outwardly from the rotor. As the rotor rotates within the classifying chamber, the blades separate fine sized particles from oversized particles by passing the finer sized particles through the blades, and contacting and propelling the oversized particles against the classifier housing. The oversize particles fall downward through an outer annular passage defined by a baffle and the mill housing back to the grinding mechanism.

Abstract: This invention relates to a granular material processing machine characterized by the presence of a reviving main shaft in the center of a container, and the installation of multiple sub-shafts supported around the said main shaft at certain intervals, wherein multiple ring-shaped parts are fitted to said sub-shafts so that there will be sufficient space among the sub-shafts, and said ring-shaped parts are made to come into contact with the inner walls of the container.

Abstract: The present invention relates to provide an upright lever pressure type mill, and particularly to a mill which may enable the internal mill wheel to hold tightly against the external mill wheel to a preset pressure based on the principle of leverage in order to increase milling efficiency, reduce noise and protect mill wheels against wearing. The mill includes a powder suction/delivery device, a separation device, a milling device, a lever pressure device, a variable speed mechanism and a transmission device. The milling device includes an integrally molded external mill wheel, a centrifugal disc and a number of internal mill wheels. The spindle of the internal mill wheel has a pressure lever for mounting a tension spring and for giving necessary tensile force as required on the principle of leverage.

Abstract: A method and apparatus for making ice cubes is disclosed wherein a large number of ice trays or liquid trapping elements are placed in a larger container, liquid added to the larger container to a level which will fill the liquid trapping elements when the container is positioned in an ultimate storage position and in the ultimate storage position, all the liquid not trapped in the trapping elements is drained. Apparatus disclosed is a container for closely receiving a plurality of ice trays and a lid with a closeable drain opening. A closeable opening is shown in a container wall. Racks can be provided on one container wall and the container can be made of insulating material.

Abstract: A centrifugal grinding mill of the ring-roller type incorporating a decelerating means, a grinding roller means, a classifying means and a finished product conveying means, which means are driven by a single shaft driven by a single motor, is suitable for grinding soft, hard and solid (ores), viscous, and fibrous raw materials to desired fineness. The distance between grinding ring and rollers is adjustable. Under the grinding roller means there is provided a means for removing waste materials. By means of the guiding of an air stream in cooperation with the classifying means the separate vanes of which can be selectively changed in number, it is possible to obtain finished particles ranging in size from several ten to more than ten thousand mesh (U.S. standard mesh).

Abstract: A replaceable roll for mounting on a tapered threaded shaft of a roller mill includes a generally cylindrical roll member of wear-resistant cast material having an axial bore defined by a central bore wall portion raised with respect to a first bore end wall portion and recessed with respect to an opposite second bore end wall portion. The first bore end wall portion is of a preferably noncircular, polygonal configuration and receives a removable complementary annular end insert which abuts an annular shoulder formed at the interface of the central bore wall portion and first bore end wall portion. The bore of the end insert and the second bore end wall portion are axially tapered to correspond to the taper of the shaft onto which the roll is to be mounted. The taper of the second bore end wall portion forms a progressive continuation of the taper of the bore of the end insert for receiving the tapered threaded shaft.

Abstract: A roller grinding mill having the grinding roll assemblies pivotally suspended from a frame rotated by a drive shaft, means supplying lubricant and pressure air to the internal structure of the mill for providing primary air seals to keep abrasive matter from working into the bearings with pressurizing the lubricant to provide a source of air internally of the grinding roll assemblies to set up a secondary air seal in the event of a break or leak in the pressure air which can interrupt the primary air seal, and means to monitor or detect a condition in the mill which would result in damage to the bearings if not attended to.

Abstract: Apparatus for grinding coal to micron fineness having a grinding chamber with a grinding surface supported by a circumferential wall in the grinding chamber, a plurality of grinding rolls orbiting in the grinding chamber for grinding the coal, air supply bustle surrounding the grinding chamber, air flow restrictor means opening from the air supply bustle to the grinding chamber to create a back pressure in the air supply bustle for substantially evenly distributing the air supplied to the grinding chamber around the circumference of the grinding chamber, and wherein the restrictor means directs the air flow tangentially relative to the circumferential wall of the grinding chamber so that the coal particles are caught up in a cyclonic movement having a large initial horizontally directed force to maintain a body of coal particles in the orbit of the grinding rolls, which horizontal force gradually diminishes as the vertical force component of the air flow lifts the ground coal particles out of the grinding cha

Abstract: Pulverizing apparatus comprising a vertical feed mechanism, a vertical mill cylinder in which raw material is fed, ground at one level, classified at another level and exhausted through a top portion to a collector and filter with particles of undesired sizes being returned to the mill for regrinding.