Abstract: Clean glass particles are produced from post-consumer mixed glass and like waste streams by a series of pulverizing, size- and material-based separation, ozonation, drying, sizing, and paper fluff removal steps.

Abstract: An axial classifier, for separating the coarse particles from a fluid flow having both coarse and fine particles, comprising a housing forming a first chamber for the fluid flow to enter the classifier, a vane assembly provided within the housing, wherein the vane assembly includes a plurality of blades aligned around a flow diverter, a cone member forming a second chamber for the fluid flow to pass therein, wherein the cone member includes an opening for the coarse particles separated from the fluid flow to pass therethrough, and an outlet for the particles remaining in the fluid flow after separation of the coarse particles to exit the classifier, wherein the plurality of blades of the vane assembly abut an outer surface of the flow diverter to direct the fluid flow from the first chamber into the second chamber in a manner that congregates the coarse particles for classification.

Abstract: Hydraulic cements, such as Portland cements and other cements that include substantial quantities of tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and/or tetracalcalcium alumino-ferrite (C4AF), are particle size optimized to have increased reactivity compared to cements of similar chemistry and/or decreased water demand compared to cements of similar fineness. Increasing hydraulic cement reactivity increases early strength development and release of reactive calcium hydroxide, both of which enhance SCM replacement and 1-28 day strengths compared to blends of conventional Portland cement and one or more SCMs, such as coal ash, slag or natural pozzolan. Decreasing the water demand can improve strength by decreasing the water-to-cement ratio for a given workability. The narrow PSD cements are well suited for making blended cements, including binary, ternary and quaternary blends.

Abstract: The invention relates to a method for manufacturing dispersed mineral products by grinding the mineral raw material, sizing the same in a flow classifier, sorting the same in dispersion in air, and eliminating the dispersion air. Also disclosed are devices and installations for carrying out said method.

Abstract: An attrition mill that includes a grinding chamber having a plurality of grinding elements and an internal classification and separation stage. The mill also includes at least one grinding element providing a larger flow path therethrough, when compared to other of the grinding elements. In other embodiments, mill includes at least one grinding element having an open area in the grinding element created to allow a larger flow path as a proportion of the grinding element surface area without such allowance and in the range of from 15% to equal to or less than 100%.

Abstract: An apparatus for making a cementitious composition may comprise a grinding mill for producing a cementitious composition from clinker and gypsum and classifiers for separating the cementitious composition into various portions. A primary portion of the cementitious composition has a particle size distribution such that substantially all of its particles are of a size of about 10 microns or smaller. A secondary portion and a remainder portion of the cementitious composition are combinable to form a resultant cementitious composition selected from Type I portland cement and Type III portland cement.

Abstract: A method for processing unseparated egg shells is provided. The method includes placing the unseparated egg shells in a fluid tank containing a fluid mixture, applying cavitation to the fluid mixture to thereby assist in separating the egg shell membranes from the egg shells, and recovering the egg shell membranes. Preferably, the fluid mixture is recirculated to thereby provide for continuous processing of unseparated egg shells. The method may further include drying the egg shell membranes to produce dried egg shell membranes which may then be vacuum packaged for storage and/or transport. The dried egg shell membranes may then be subjected to an extraction process for extracting at least one type of polypeptide from the egg shell membranes. Collagen, hyaluronic acid, or amino acids of interest may be extracted from the egg shell membrane and purified for numerous uses.

Abstract: A process of producing high purity trona concentrate includes crushing a mined raw trona (14) to form a crushed raw trona, and separating the crushed raw trona into at least two size fractions (16), wherein a first size fraction is larger than a second size fraction. At least two magnetic separators can be selectively independently adjusted (18,20) to optimize magnetic separation of magnetic impurities from the size fractions. Each of the magnetic separators corresponds to one of the size fractions, which can be separately introduced into the corresponding magnetic separators (22,24) to undergo magnetic separation (26,28,30), which removes magnetic impurities from the size fractions. A first high purity dry trona and a second high purity dry trona may be recovered from the first and second size fractions, respectively. Each of the high purity dry tronas may be combined to form a magnetically purified dry trona.

Abstract: A grinding machine for grinding foodstuffs, such as meat or the like, includes an orifice plate at the outlet of a grinding head. The orifice plate has collection passages that discharge a mixture of soft material and hard material through the orifice plate. A separator assembly is located downstream of the orifice plate for separating the soft material from the hard material. The separator assembly includes a tapered, perforated separator chamber that receives the mixture of soft material and hard material, in combination with a rotatable separator screw located within the separator chamber. Rotation of the separator screw functions to separate the soft material from the hard material and force the soft material through the perforations in the separator chamber. An adjustment arrangement enables the axial position of the separator screw to be adjusted within the separator chamber.

Abstract: A belt conveyor and a crushing unit includes a conveying upper run presenting a feed end and a discharge end, and a return lower run, with the conveying upper end including a curved extension, which is concave and ascending and presents an inlet lower portion and an outlet upper portion of the conveying upper run, where the belt conveyor imparts to the material a path that is substantially coplanar and opposite in relation to that imparted to the material in the inlet portion, and with ascending curved path presenting at a determined belt speed, a centrifugal force sufficient to maintain the material seated against the curved extension of the conveying upper run until reaching the discharge end.

Abstract: System and method for comminuting gypsum wallboard received from a series of processing hoppers and milling hoppers by discharge into an assembly including a feed hopper, a barrel and trommel screen assembly for separation and final removal of paper and non-ferrous materials from comminuted gypsum wallboard, and separate assembly for receiving and conveying processed barrel screen discharge waste and gypsum.

Abstract: A compact, self-contained, energy-efficient split-cane apparatus and method of use for separating pith, rind, and epidermis components of a sugarcane stalk, wherein sugarcane billets are driven over a splitter blade, dividing them longitudinally into two billet portions. The billet portions are processed individually by symmetrical processing paths. The pith is milled away from the rind while simultaneously flattening the rind. A deflector is adapted and positioned for directing the pith along a pith processing path, and further directing the rind along a rind processing path. The epidermis is removed from the rind, and each are subsequently shredded by at least one shredder disc, at which point an at least one perforated tumbling drum separates the shredded epidermis from the shredded rind. In addition, the apparatus is adjustable, enabling it to accommodate a wide range of sugarcane stalk thicknesses while maintaining its ability to efficiently separate each sugarcane component.

Abstract: A method for processing unseparated egg shells is provided. The method includes placing the unseparated egg shells in a fluid tank containing a fluid mixture, applying cavitation to the fluid mixture to thereby assist in separating the egg shell membranes from the egg shells, and recovering the egg shell membranes. Preferably, the fluid mixture is recirculated to thereby provide for continuous processing of unseparated egg shells. The method may further include drying the egg shell membranes to produce dried egg shell membranes which may then be vacuum packaged for storage and/or transport. The dried egg shell membranes may then be subjected to an extraction process for extracting at least one type of polypeptide from the egg shell membranes. Collagen, hyaluronic acid, or amino acids of interest may be extracted from the egg shell membrane and purified for numerous uses.

Abstract: A separator is used in conjunction with a grinding mill which has a suction assembly, a grinding device, regulating devices and a driving device. The separator is mounted in a main body of the grinding mill on a rotating vertical separator shaft, comprising two support rings of equal sizes and shapes, mounted on the separator shaft with parallel orientations, having radial bridges with openings in between, which are surrounded by a plurality of mounting holes; and a plurality of blades, hingedly mounted on the mounting holes by vertical rods, for separating ground particles according to size.

Abstract: A method and a device for producing and/or conditioning powdered material. The aim of the invention is to provide a method and an associated device which are used for producing and/or conditioning powdered material in a spouted bed comprising inert particles and in which a dry, fine powder having a very small particle diameter is produced at a low cost and at adequately large quantities in a continuous operation. This aim is achieved by a method in which the material is treated in several stages in a spouted bed comprising inert particles. In the method, the powdered material that is preprocessed in a first spouted bed and is separated from the larger material particles in an integrated dust collector is fed to a superimposed second spouted bed as a material-gas flow along with the gas flow discharged from the first spouted bed in order to be further reduced in size and be conditioned.

Abstract: Disclosed is a feed system for a gasifier including a grinding mechanism capable of grinding a feedstock into particles of desired particle sizes. The particle sizes include solids particles larger than a first threshold size and raw fines particles smaller than a second threshold size. At least one solids separation device is capable of separating the solids particles from the fines particles and at least one solids conduit conveys the solids particles to a gasification plant while the fines particles are also conveyed to the gasification plant. Further disclosed is a method for feeding stock into a gasifier including conveying a feedstock into a grinding mechanism and grinding the feedstock into particles of desired sizes. Solids particles larger than a first threshold size are separated from fines particles smaller than a second threshold size and the solids particles and the fines particles are conveyed toward the gasification plant.

Abstract: A sizing roller screen apparatus and method for processing an ore feed received at an inlet is disclosed. The ore feed includes sized ore portions and oversize ore portions. The apparatus includes a roller screen having a plurality of adjacent screening rollers supported to provide interstices therebetween for permitting passage of the sized ore portions between the adjacent screening rollers, the adjacent screening rollers being operably configured to rotate to cause a first sized ore portion to pass through the interstices while the ore feed is being transported along the roller screen. The apparatus also includes a sizing roller disposed generally above an opposing one of the plurality of adjacent screening rollers, the sizing roller being operably configured to rotate to fragment at least some of the oversize ore portions passing between the sizing roller and the opposing screening roller to produce a second sized ore portion, the second sized ore portion being sized for passage between the interstices.

Abstract: An aspect of the invention provides a wet medium stirring, crushing, and dispersing machine achieving a high crushing and dispersing effect and high processing efficiency even in a low stirring member stirrer tip speed at which a processed material is not damaged, without particularly increasing the cost. In the wet medium stirring, crushing, and dispersing machine in which beads and slurry are caused to flow to crush and disperse the processed material in the slurry by rotation of a stirring member mounted in a crushing vessel, a small through-hole is made in order to rapidly narrow a flow passage of an in-flow fluent material to generate an orifice contracted flow, and the orifice contracted flow disturbs vectors of the flowing beads to effectively increase a speed difference ?V between the beads, thereby securing and improving the desired crushing and dispersing effect and the processing efficiency even in the low stirrer tip speed operation.

Abstract: A sand making apparatus comprises: a crusher configured to crush crushed materials; a first sorter configured to sort the crushed materials obtained from the crusher into coarse particles, fine particles, and powders through air sorting by air blowing and screening sorting by a screen; a negative pressure collection unit configured to suck and collect the powders from the first sorter; and a second sorter disposed between the first sorter and the negative pressure collection unit, the second sorter configured to sort the powders into coarse powders and fine powders through negative pressure of the negative pressure collection unit.

Abstract: A particle reduction device comprising: a housing containing an inlet for receiving material into a flow chamber, at least two adjacently spaced particle reduction stages through which material flows from one stage to the other for reducing the particle size of the material, and an outlet for outputting processed material with reduced particle size; each particle reduction stage having an impact member that rotates about a central shaft for impacting material into smaller particles; wherein at least one of the stages has a screen located downstream from the impact member, the screen having perforations through which particles of a sufficiently small size can pass.

Abstract: A pulverizer simplified in structure for easy maintenance and suppressed in cost. The pulverizer has a hopper (2) provided on one side thereof, a product discharge hole (4) provided on the other side thereof, and a raw material crushing chamber (3) for crushing raw material that is fed from the hopper (2) and discharging the crushed material from the product discharge hole (4) . The pulverizer further has at least one thin plate-like rotor (8) disposed on the upstream side inside the raw material crushing chamber (3), a hollow circular cylindrical space (S1) in which the rotor is placed, a classifying space (C) disposed on the downstream side of the hollow circular cylindrical space (S1) and formed in a hollow circular cylindrical shape having an inner diameter smaller than the hollow cylindrical space (S1), and a product discharge hole (4) which is coaxially disposed on the downstream side of the classifying space (C) having an inner diameter smaller than the classifying space (C).

Abstract: In an arrangement for processing excavated materials including a material crushing device and a classifier to which the crushed material is supplied for screening, the classifier includes a leveling structure which provides for a desired orientation of the classifier relative to a horizontal plane independently of the orientation of the crushing device.

Abstract: Disclosed are a method and a device for grinding cellulose, in which a raw cellulose material (6) is uniformly moistened with a given quantity of liquid by means of a moistening unit (1) before being ground in a grinding mill (2). A first conveying mechanism (3) conveys the raw cellulose material (6) to the moistening unit (1) while a second conveying mechanism (4) conveys the moist raw cellulose material on the grinding mill (2).

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: Methods and apparatus for combinatorial (i.e., high-throughput) materials research, such as catalysis research, that involves parallel apparatus for simultaneously effecting mechanical treatments such as grinding, mixing, pressing, crushing, sieving, and/or fractionating of such materials are disclosed. The methods and apparatus are useful for mechanically treating catalysis materials and other solid materials, including without limitation, electronic materials such as phosphors, colorants such as pigments, and pharmaceuticals such as crystalline drugs or drug candidates. The simultaneous protocols and parallel apparatus offer substantial improvements in overall throughput for preparing arrays of materials, such as catalysis materials.

Abstract: A recycling plant comprises a main conveyor that rotates horizontally near ground level. Collected mixed refuse is brought in by trucks on a driveway surrounding the main conveyer. Loaders or dozers are used to move the refuse onto the main conveyer where it will enter a processing unit straddling the main conveyer. Two or more such processing units can be positioned around the circle formed by the main conveyer. An adjustable height conveyer rides on top of the heaps of refuse entering on the main conveyor and compresses the mass so it can enter a first grinding mill. The refuse is ground and torn into small pieces. A second grinding mill further reduces the size of the pieces. A magnetic pickup uses electromagnets to levitate out bits of iron and steel which are carried away and put in a salvage bin. A manual sorting and picking station with takeaway conveyors and salvage bins allows personnel to manually pick paper, plastic, and glass for recycling.

Abstract: Systems and methods are provided for separating materials, such as fluff and plastic found in disposable diapers. A separator unit is provided having an inlet for receiving the materials, means for separating the materials, and multiple outlets for each of the respective materials. In one aspect, the system is substantially pneumatic, and air is used to separate the materials. In some aspects, a shredder is provided for shredding the materials prior to separating, and balers are provided for baling each of the respective materials.

Abstract: A device reuses several plastic materials and paper fibers rejected in previous recycling performed by paper industries, by compacting the fragments of the plastic materials inside of a conventional container.

Abstract: Various embodiments of the present invention are directed to waste disposal methods and systems. In one embodiment of the present invention, a waste disposal system is positioned under a sink in a building connected to a septic system for disposal of food waste and wastewater. The waste disposal system includes a grinding chamber, a centrifugal-pump chamber, and a straining chamber for separating food waste from wastewater. The straining chamber includes a filtration basket, and an outlet pipe.

Abstract: A method for harvesting weighting agent fines includes milling weighting agent into a plurality of pieces, classifying the pieces based on size to extract those particles having a particle size less than an acceptable maximum diameter, reclassifying the pieces based on size to extract those particles having a particle size less than an acceptable minimum diameter, collecting the particles having a particle size between the standard acceptable minimum and maximum diameters, and collecting the particles having a particle size less than the acceptable minimum diameter. A system for harvesting weighting agent fines includes a mill to reduce the weighting agent particle size, a first classifier to extract particles having a particle size less than the acceptable maximum diameter, a second classifier to extract particles having a particle size less than the acceptable minimum diameter, a fine particle collection area, and a coarse particle collection area.

Abstract: A densification system for shredding and densifying specification raw materials for use as an alternative fuel source. The densified specification raw materials formed by the inventive system are readily transportable to a fuel processing site where they may be used to generate energy.

Abstract: The invention provides a method and apparatus for recycling toner cartridges. A shredder breaks up the toner cartridges into pieces, thereby releasing any toner from within the otherwise substantially sealed cartridges. The toner pieces along with any free toner powder are then fed through a separation stage including a mechanical separator and a trommel separator. Each separator employs a sifting screen, which allows smaller particles to fall through the screen while holding back the larger pieces. Both separators agitate the pieces to mobilize the smaller particles. A vacuum extraction system is used to withdraw air from around the cartridge pieces and an air ionizer is included for feeding ionized air into the apparatus to reduce any static electronic charge buildup. The toner is then removed from the extracted air by a dust collector.

Abstract: Efficient process control of a rotary breaker is dependent upon the rate at which aggregate material is delivered to the rotary breaker. An improved pre-screening apparatus provides enhanced control of the amount of undersized material allowed to bypass the rotary breaker, thus allows some control of feed rate other than the upstream mining conditions. Further, a variable speed drive mechanism allows for enhanced control of the breaking process occurring within the rotary breaker. These improvements allow for the increase in maximum feed rate to an existing rotary breaker or allows for the installation of smaller and more economical original equipment. In addition, an improved discharge mechanism is provided to increase the discharge rates of a breaker without varying size or speed of rotation. These improvements allow for advanced automated process control.

Abstract: Self contained filter backpurge systems useful for totally enclosed processing mills and for clean in place (CIP) processing material processing mills.

Abstract: Methods and apparatus for combinatorial (i.e., high-throughput) materials research, such as catalysis research, that involves parallel apparatus for simultaneously effecting mechanical treatments such as grinding, mixing, pressing, crushing, sieving, and/or fractionating of such materials are disclosed. The methods and apparatus are useful for mechanically treating catalysis materials and other solid materials, including without limitation, electronic materials such as phosphors, colorants such as pigments, and pharmaceuticals such as crystalline drugs or drug candidates. The simultaneous protocols and parallel apparatus offer substantial improvements in overall throughput for preparing arrays of materials, such as catalysis materials.

Abstract: The invention provides a dry grinding system including grinding means for dry-grinding a material to be ground; first classification means for classifying a ground product obtained through the grinding means, into fine powder having a relatively small average particle size and coarse powder having a relatively large average particle size; second classification means for further classifying the coarse powder obtained through the first classification means, into fine powder having a relatively small average particle size and coarse powder having a relatively large average particle size; and returning means for returning to the grinding means the coarse powder obtained through the second classification means. The invention enables production of a powder product having a desired average particle size at high efficiency.

Abstract: Apparatus (2) for crushing glass or ceramic material, which apparatus (2) comprises a rotor (4), rotor blades (6) on the rotor (4), at least one stationary blade (8) which cooperates in use with the rotor blades (6) as the rotor (4) rotates, and a chamber (16) for receiving crushed glass or ceramic material (18), the apparatus (2) being such that the rotor (4) is upstream of the chamber (16), the glass or ceramic material (18) is first broken into fragments (20) on impact with the rotor (4), the fragments (20) are reduced in size and formed into cullet (22) by passing through a gap (24) between the rotor blades (6) and the stationary blade (8), and the action of the rotor blades (6) and the stationary blade (8) causes the cullet (22) to be such that it will not cut, is safe for handling, and is suitable for further use without further processing.

Abstract: An apparatus suitable for treating mineral material, particularly excavated earth, has two rollers that rotate in opposite directions, on which a plurality of elements is disposed, the elements serving to transport and reduce the material in case its particle size is too large. Elements that are designed to exert a notch effect onto particle sizes larger than a minimum size are provided for reducing brittle and large-particle components of the mineral material, in particular. The reduction by means of the notch effect has been proven to save energy and subject machines to low wear. The elements that produce the notch effect can also reduce wood (tree stumps).

Abstract: A coffee grinder-dispenser comprising a base, a grinder located within the base, an electric motor for operating the grinder, and a hopper, or cup, for receiving the coffee beans to be ground. A funnel is secured to the base, to receive the ground coffee, or powder via a distribution channel that extends in a horizontal plane. A grid, comprising spaced stainless steel rods, extending vertically and horizontally, is positioned in the entry hole or port of the funnel in alignment with the distribution conduit of the grinder-dispenser. The grid reduces the velocity of the ground coffee, or powder, so that the powder does not accumulate upon, or adhere to, the walls of the funnel. Consequently, when a lever on the base is operated, an accurate amount of ground coffee is discharged from the funnel into a conventional filter holder.

Abstract: A granulator for reducing the size of plastic particles to facilitate the removal of contaminants therefrom. The granulator includes an upper chamber and a lower chamber defined by an exit screen. The upper chamber includes a rotary shear and an air handling system for creating a pressure drop across the screen to facilitate the transit of particulate material therethrough.

Abstract: A method for stabilizing material physical properties of recyclable bumpers including the steps of: separating coating from raw material obtained by cleaning, fracturing and drying recyclable bumpers to form a recycled matrix; mixing an additive with the recycled matrix; melting and extruding the mixed matrix with an extrusion machine; cutting the molten and extruded matrix to produce pellets; introducing the pellets into a tank of a predetermined capacity; and mixing the pellets in the tank for a predetermined period of time while again delivering the pellets in the tank to an introduction opening of the tank for reintroduction into the tank in parallel with the pellets that are to be newly introduced.

Abstract: A mechanical system that separates bundles of paper and presents the separated paper on a conveyor in a single layer fashion, for further processing. The paper is accumulated in a hopper and fed into the mechanical separating mechanism in a batch mode. When sufficient volume has been admitted to the container, the inflow port is closed and the mechanical separating impeller are activated to rotate in the same direction, imparting bidirectional forces on compacted bundles of sheets or shreds, causing them to deaggregate. Upon completion of the separation cycle, the separated sheets are expelled through an outlet port and conveyed to a drop chute for further singulation, from which the singulated sheets may be deposited onto one or more conveyor belts for sorting.

Abstract: A separating or deboning machine, for separating soft material such as meat from hard material such as bone, includes a separating chamber through which a flighted auger extends. The separating chamber has a series of perforations in a side wall, through which soft material passes upon rotation of the auger. Pressure is maintained within a flow passage defined by the separating chamber, which forces the soft material through the separations to the exterior of the separating chamber. The separating chamber is preferably formed so as to have a parallel-type wall structure, to provide a high throughput of material. The perforations are in the form of specially configured slots which provide low pressure passages for enabling soft material to pass from the flow passage to the exterior of the separating chamber. The slots are inclined in the direction of auger rotation in an upstream-to-downstream direction.

Abstract: An apparatus and a method for sorting out shredder waste allows for lower sorting cost and higher sorting accuracy to be achieved.

Abstract: A method for the removal of a spent catalyst from a fixed-bed reactor is disclosed, wherein a suction hose, in which a high pressure hose comprising a high-pressure nozzle is integrated, is introduced into the reactor, the catalyst is then size-reduced by water under high pressure passed through the nozzle, the catalyst/water mixture is removed under suction and is optionally collected in a separator.

Abstract: The invention provides a method and installation for processing heterogeneous value bearing material by pressure comminution. The material is compressed in a bed of particles, at low pressures and at low bulk material densities, and preferably no more than is necessary to liberate the desired values, thereby to minimise the formation of fines. The compressive bed pressure applied to the material does not exceed 300 MPa, and the process is preferably operated in an open circuit mode. Surprisingly, these measures lead to enhanced liberation of values compared with conventional comminution techniques.

Abstract: Components of crushed fluorescent lamps are conveyed pneumatically from a lamp crusher housing to a cyclonic hopper and enter tangentially into the hopper adjacent its upper end. The components include heavy glass particles and caps which are allowed to drop by gravity into a separator housing where they are separated from each other and discharged into different storage containers. Lighter glass particles and dust are recirculated from the upper end of the hopper back to the crusher housing. A vacuum source draws dust and vapors pneumatically from the bottom of the hopper and introduces them tangentially into a cyclone filter housing where particulate matter is allowed to drop into a dust collector. This vacuum source also draws lighter dust and vapors from the upper end of the cyclone filter housing to a dust and mercury filter. Mounted in the crusher housing is a paddle element which rotates adjacent lamp crusher blades and mechanically sweeps lamp components towards the crusher housing outlet.

Abstract: A pretreatment apparatus for raw materials for production of reduced iron pretreats the raw materials, comprising an iron material, such as iron ore, and other raw materials, such as coal and flux, by a dryer, classifiers, a roll press, and a vertical mill, and feeds the pretreated raw materials to a pelletizer via a feed bin. At least two fluidized mixers for mixing the classified raw materials, one of the fluidized mixers for storage and the other fluidized mixer for supply, are provided for batch treatment. The pretreatment apparatus can uniformize the crushed particle sizes of iron ore, coal, etc. different in hardness, stably supply homogeneously mixed raw materials, and simplify pelletization-side facilities.

Abstract: A comminuting apparatus including a filtering screen member for collecting solids carried by an effluent stream. The filtering screen member has an upstream side and a downstream side. The comminutor apparatus further includes a twin shaft grinder for grinding solids contained in the effluent stream and for cleaning the filtering screen member of solids collected thereon. The comminutor apparatus also includes a mounting member in the form of frame-like structure for mounting the twin shaft grinder at a spaced apart distance from the upstream side of the filtering screen member. Additionally, the comminutor apparatus includes a moving device in the form of a drive motor for moving the twin shaft grinder past the upstream side of the filtering screen member such that the twin shaft grinder is continuously spaced from the filtering screen member during the movement of the twin shaft grinder.

Abstract: Object of the invention is to finely granulate the granular substances with pollutants, such as the contaminated soils and incinerated ashes, adhered and to separate the pollutants from the granular substances efficiently and further to enable the unnoxious granular substances, from which pollutants as above have been separated, to be recycled.