Abstract: An improved mobile batch plant that is entirely self-erecting and completely contained as operated between transport and functional modes by a single operator. A truck-towed main frame hingedly supports a tower assembly that includes cement storage and weigh bins and water storage and weigh tanks proximate a materials release point to be received by a mixer. An aggregate and/or sand hopper and conveyor are located forward on the main frame and these serve to move aggregate materials to the release point. A hydraulic linear actuator system operates to move the tower assembly between the vertical operational position and the horizontal transport position where conveyor and tower are compacted against the main frame.

Abstract: A method and apparatus for recycling asphalt shingles in an asphalt plant which heats and dries aggregate and mixes the heated and dried aggregate with liquid asphalt to form an asphalt paving composition. The shingles are comminuted to particles of a size which can be easily flowed and metered, and the shingle particles are introduced into the asphalt plant such that they are heated to melt the asphalt in the shingle particles. The aggregate, heated shingle particles, and liquid asphalt are thoroughly mixed to form an asphalt paving composition.

Abstract: An apparatus for preparing a mixture, such as mortar, with predetermined quantities by weight of the components, such as sand, cement and the like, a supply of which is present in container compartments 4, 5 of e.g. hopper 1. The container compartments are each connectable to a metering conveyor 11, 12 of the apparatus. The apparatus is further provided with a mixing vessel 13 having stirring means, the vessel being supported at least partly on force absorbers 14 of weighing means. The weighting means are coupled with control means 15 for successively putting into operation the metering conveyor means for the various components.

Abstract: This invention relates to a batching plant for particulate materials including batching of finely divided material such as cementitious (e.g. cement and flyash) and denser material such as aggregate which may include sand, screenings and gravel. The batching plant includes batching means for batching of the denser material such as one or more weighing hoppers. There also is included conveying means such as a belt conveyor for transfer of batched dense material from the batching means to a discharge location or housing. Storage means for the finely divided material is also provided such as a storage bin having a discharge outlet. There also is included a pressurized batching vessel for finely divided material discharged from the storage means which suitably is provided with means for creating a fluidized bed in the pressurized vessel.

Abstract: A filling machine for packaging divided solid material having a conduit for feeding the material under pressure into a packaging container, wherein an elastic liner is disposed in and extends along a part of the length of the conduit, has its opposite ends secured to the conduit, and cooperates with the inner surface of the conduit to form a cavity. The conduit is formed with a vent opening to the cavity to permit outward expansion of the liner when material is flowing through the conduit and inward contraction of the liner when there is no flow through the conduit, thereby flexing the liner to crack and break off material adhering to the inner surface of the liner.

Abstract: A novel apparatus and process for producing cement slurry on a batch basis is disclosed. During the charging of a slurry batcher with water and cement, the cement dust so produced is captured and added back to the slurry being batched in order to minimize health and environmental hazards created by the cement dust. This is achieved by passing or venting entrapped air and dust in the batcher through air vent and cement dust collection means which in one embodiment comprises a water reservoir through which the air and dust passes. Dust is captured by the reservoir water and the reservoir water then discharged into the batcher so as to become part of the slurry batch with known and pre-determined amounts of water and cement in the slurry.

Abstract: A mobile concrete batch plant including a wheeled, tilting main frame upon which are mounted a collection hood, an aggregate weigh batcher, and a cement weigh batcher. The collection hood is positioned at an end of the main frame that is raised above the ground when the batch plant is erected and the cement weight batcher is positioned above the collection hood. The aggregate weigh batcher is positioned at the opposite end of the main frame and a conveyor is provided between the aggregate weight batcher and the collection hood. A secondary frame is pivotally attached to the tilting main frame between the weigh batchers and a cement silo is pivotally attached to the secondary frame.

Abstract: In the batchwise production of asphalt concrete only such aggregate is utilized, as comprises a coarse-grained portion, a fine-grained portion and a filler portion. The coarse-grained portion and the bituminous binder used are mixed in a mixer, and the filler portion is added to the mixer in such a way that it is has been taken up by and suspended in the binder film deposited on the coarse-grained portion before the free particles on the fine-grained portion are added. In such a way the thickness of the binder film and the capability thereof to take up the particles of the fine-grained portion are increased so that also said particles are coated with and suspended in the binder.

Abstract: A grain handling system comprises a valve device for controlling a flow rate discharged from a downstream end of at least one flow passage. A volumetric weight measuring device measures the weight per unit volume of the grain delivered toward the valve device to generate a volumetric weight signal. A computer generates a control signal on the basis of the volumetric weight signal. A drive device drivingly connected to the valve device is operative in response to the control signal to drive the valve device so as to allow the grain discharged from the valve device to be controlled in terms of weight unit.

Abstract: A mixing apparatus for dry or wet ingredients is disclosed, which comprises an upwardly inclined trackway, and a mixing container mounted for rolling movement along the trackway. The trackway includes a scale at the lower end which permits the container and its contents to be weighed, and so that predetermined amounts of a number of ingredients may be loaded into the container. A power system is provided for pulling the container upwardly along the trackway, and such that the container is subjected to a rotary motion for mixing the ingredients, and a simultaneous linear transport to an elevated position. The container includes unique internal mixing vanes which facilitate mixing of the ingredients during rotation of the container, and which also permit substantially all of the mixed ingredients to be freely discharged by gravity at the elevated discharge location.

Abstract: A system for handling a multitude of particulate solid minor ingredients to be selectively added to individual batches in a batch treatment blending process comprises storage vessels, inventory control methods, recipe correction methods, a batch weighing system and weighing trolley for feed to one of a series of blenders. The system's mechanical components are under fully automated control by a computer, using bar code scanners. Inventory control is accomplished by providing dedicated storage vessels and a weighing system whose output signals are monitored by the computer. The functions of batch weighing and batch delivery for particulate solids employ a number of carriers which serve as dedicated delivery containers. Each carrier is carried on a trolley rail system and the trolley moves the carrier to various nests of solids storage vessels for weigh-in filling of the minor ingredients by screw type feeders, as directed by the computer, and based on the computer-stored recipe information.

Abstract: The viscosity and amount of limestone in a limestone asphalt mixture (filled coating mixture) is determined sensing the density of the mixture which will indicate the percent of limestone in the mixture and also sensing the temperature of the mixture, and adjusting the ratio of limestone to asphalt to maximize this ratio relative to a pre-set ratio and adjusting the pre-set ratio in accordance with the temperature of the mixture when the temperature is below a pre-determined limit.

Abstract: The invention relates to concrete mixing plant suitable for weighing and mixing at least two aggregate materials and cement inside a concrete mixer comprising a container to collect aggregate, weighing and/or dosing scale, a worm-screw to deliver cement, a concrete mixer or mixing machine means whereby the whole is borne by a plurality of legs and/or supports possibly to sustain a silo holding cement, and an elevator wheel suitable for receiving and premixing the aggregates, the wheel being located between the container collecting aggregate and the concrete mixer suitable for receiving the aggregates and cement.

Abstract: In the preparation of a cement paste about 30 to 76% of the total water is added to the cement to form a funicular state, capillary state or slurry state, and the resulting mixture is kneaded so as to reduce the coagulated lumps of cement. Then the remaining quantity of water is added and the composition or mixture is kneaded again. Sand and/or gravel may be incorporated after the firstly kneaded mixture. The resulting cement paste, mortar or green concrete exhibits a small percentage of bleeding water and products prepared therefrom have a high compression strength.

Abstract: A mechanical process for filling the tubes (3) of tubular reactors with granular solids, e.g. catalysts, wherein two or more streams of material, e.g. of different catalytic activity, can be introduced in a controlled manner into each tube (3) which is to be filled, from two or more stock vessels (1,2) via two or more dispensing devices (MI, MZ) mounted above the upper tube end plate (13). By this process, different thermal/catalytic reaction profiles can be achieved over the length of the tube, or in certain groups of tubes within the tubular reactor, with substantially less time being required for filling the tubes (3).

Abstract: A mixing tower for concrete or the like has a series of superimposed prefabricated modules which are connected to one another and include a cylindrical lowermost module, a frustoconical intermediate module with several outlets which is integral with the top of the lowermost module, and several larger-diameter cylindrical modules above the intermediate module. The modules contain prefabricated mixers, controls, scales and/or analogous aggregates which are assembled with the respective modules at the manufacturing plant and are coupled to each other at the locus of erection of the tower, preferably by coupling devices each of which is disposed at the level of connection between the respective modules.

Abstract: An apparatus for weighing and mixing asphalt and a stabilizer by weight, the apparatus including a weigh bucket and a weigh hopper, the asphalt and stabilizer being fed to the bucket and hopper simultaneously and discharged to an intermediate mixer when the predetermined weight ratio has been fed to the bucket and hopper, the asphalt stabilizer composition being mixed for a predetermined period of time and fed to a surge mixer, the cycle being repeated whenever the surge mixer is not filled.

Abstract: Apparatus for metering and feeding aggregate materials for the production of concrete is constructed so as to be transportable as a unit. To this end, the frame of the apparatus is in two parts which are pivotally connected with one another, the one, fixed, part accommodating metering apparatus, and the other, movable, part accommodating an elevated storage and mixing apparatus. The movable part pivots down into a transporting condition and up into its operating condition. The two frame parts together provide an inclined path for a charge box by which metered quantities of aggregate are transferred from the metering apparatus to the mixing apparatus. Various damping devices are provided for preventing undue vibrations at the start and end of the movement of the charge box.

Abstract: An apparatus for and a method of recycling asphaltic waste shingles. The apparatus includes an elongated conversion tank into which an asphaltic oil, preferably preheated, and shingle tabs are admitted. The shingle tabs are dissociated into substantially liquified and solid shingle materials. The dissociated shingles are agitated with the asphaltic oil to form a slurry which can be drawn off and discharged to a work station. During the agitation, the substantially solid shingle materials are shredded to reduce their size. Preferably, the asphaltic oil is of a higher penetration grade than the asphaltic content of the shingles when in a substantially liquified form.

Abstract: A bituminous mixture of aggregate and a bituminous binder, especially for road construction or repair is prepared by mixing a batch of still moist aggregate with the bituminous binder in a pressurized mixing container. The gauge pressure in the mixing container is maintained at or just above the saturation pressure of the water adhering to the surfaces of the aggregate, at the desired mixing temperature. Upon completion of the mixing the pressure in the mixing container is reduced to below one bar whereby moisture is removed from the mixture. The present mixing apparatus is rotatable about a hollow axle through which a supply of heating gas is maintained during the mixing. During the removal of the mixture from the mixing container the heating gas may be circulated through the next batch of aggregate being prepared.

Abstract: A concrete mixer and the like adapted to be attached to the lifting system of a tractor or other vehicle. This mixer comprises a bucket having a cylindrical drum shape, the lateral wall of which is provided with an aperture having a maximum opening of one quarter of a circle. A shaft is mounted in the cylindrical drum along the longitudinal axis thereof and carries radial arms having mixing blades secured to their outer end. Drive means can rotate the shaft in either of the two opposite directions; that is in an unloading direction and in a mixing direction. The bucket is mounted on bearings to pivotally attach it to the lifting system and to pivot it between the unloading position in which the aperture faces downward and the loading and mixing position in which the aperture faces upward.

Abstract: The invention deals with continuous process mixing of pulverized solids and liquids. It offers a mixing process comprising:continuously introducing a liquid into a mixing container;continuously introducing a solid powder into said container at such a rate that specified proportions of solid and liquid in the mixture are maintained;rotating the products in the container in such a way as to establish a vortex;regulating the solid and liquid supply rate in such a way that a given level of filling of container is constantly maintained;continuously emptying the products mixture so that level of filling is maintained.It offers as well a mechanism to implement the process including a mixing container having an intermediate bottom and a runoff opening, a turbine mounted above the intermediate bottom, and mechanism for supplying a liquid and a solid.

Abstract: A slurry reclamation system for use with a concrete ready-mix plant which enables 100% reclamation of the constituents of concrete mix returned to the plant site by vehicles.Returned concrete mix is dumped into an inlet hopper having a screw classifier for removing aggregate and coarse sand, and a weired channel enabling gravity flow of the water, cement fines and sand fines constituents into a slurry vessel. The slurry in the vessel naturally separates into clarified water and concentrated slurry, and agitators are provided for periodically stirring up the slurry to maintain the cement fines active. The slurry vessel is sized in such a manner as to guarantee complete consumption of slurry returned during a day's production by the end of the following production day, the volumetric capacity of the vessel being related to the total average volume of water used to produce fresh concrete during a representative production day.

Abstract: Apparatus and method for measuring out liquid asphalt gravimetrically. The apparatus comprises a plurality of tanks for containing liquid asphalt, each tank being suspended from a load cell, a series of pipes, valves and a pump for selectively filling the tanks with asphalt and a series of pipes, a valve and a variable rate pump for selectively removing the liquid asphalt from the tanks. The load cells are connected to a control circuit which converts the signals from the load cells into the corresponding weight of the tanks and the liquid asphalt contained therein. The control circuit is also connected to the variable rate pump to control the rate at which liquid asphalt is removed from the tank in response to the load cells.

Abstract: A plant to produce concrete by mixing sand, cement, aggregate and water by a continuous operation. A plurality of storage hoppers with twin outlets associated with weigh hoppers permit a discharge of aggregate and sand material through vibratory feeders onto a conveyor belt so that one group of weigh hoppers discharges while a second group is being filled. The conveyor belt delivers in a continuous manner to a trough mixer which receives cement from a silo and water for mixing said ingredients.