Abstract: A method and device for filling containers with evaporated radioactive waste concentrates that are mixed with bitumen and from which the water has been expelled by creation of temperatures above the boiling point of water, in which the temperature of the waste mixture is substantially reduced below the water expelling temperature immediately before loading the mixture into the containers.

Abstract: A process for making asphalt concrete comprises mixing starting materials including aggregate and binder material and optionally, other additives, to a final temperature of about 60.degree. C. to about 150.degree. C. in an indirectly heated mixing chamber which is sealed. The moisture content of the asphalt concrete mixture is controlled as a function of the moisture content of the starting materials. Apparatus for performing the process in a continuous or batch operation is also set forth.

Abstract: A method of and apparatus for melting a thermoplastic material in order to obtain an at least nearly homogeneous molten mass, according to which a granular or similar material is melted while it is being transported e.g. by a screw conveyor through a space between a housing of circular cross section and a body rotating in the housing. The transfer of heat to the granular or similar material takes place over at least an axial section of the space between the above mentioned housing and the rotatable body. This space is divided into alternating inlet and discharge channels by first ridges fixedly connected to the rotating body over the above mentioned distance and extending along the inside surface of the housing so as to at least nearly block the passage of molten material, and by second ridges respectively arranged between the first ridges and extending at least substantially parallel to the first ridges while being fixedly connected to the rotating body.

Abstract: Liquid-containing radioactive wastes are bound into thermoplastic material by introducing particles of thermoplastic material at a non-sticking temperature into a kneading machine, heating the thermoplastic material in the absence of radioactive wastes to at least 100.degree. C., adding the liquid-containing wastes to the heated thermoplastic material, mixing and concurrently increasing the temperature of the mixture to a temperature of about 200.degree. C. or more to vaporize liquid in the mixture, maintaining the mixture at a vaporization temperature to dry to the mixture, releasing evolved vapors and discharging the dried mixture from the kneading machine. Difficulties due to clogging of the kneading machine and fluctuations in the consistency of the dried end product are minimized.

Abstract: A melt mixer comprises a vessel equipped with heating means, and a pair or more of rotor means including rotors polygonal in cross section and held within the vessel, the rotor means having a heating function. The rotors of each rotor means are angularly staggered to the rotors of the adjacent rotor means. Each rotor means comprises a plurality of rotors axially mounted on a rotating shaft, the rotors being angularly staggered and spaced in succession from one another. Also, the rotor means are so disposed as to be axially movable together with one jacketed side plate of the vessel.

Abstract: A mixer and/or heat exchanger for flowable compositions includes dual, parallel, interconnected cylindrical mixing chambers through which intermeshing, counterrotating bladed mixer elements extend. The mixer blades sweep virtually the entire inner surface area of the chambers and the entire volume within the chambers. The interconnection between the chambers is designed to minimize unswept space within the chambers, and heat exchange medium is circulated around the chambers so the system can be used to heat or cool the composition moving through the mixer.

Abstract: Dry powder mix is mixed with water in accurate amounts on demand, the water and powder pass through an axial passage of a mixing rotor and must pass radially outward in a mixing bowl through a narrow gap to a tangential discharge opening. Demand is determined by startup and continuous operation level sensors arranged to maintain accurate and limited levels of mixed product in the freezing cylinder.

Abstract: The invention relates to a mash and wort tub of rectangular cross-section, having heater bottom inclined upwardly from its edges in a roof-shaped manner.

Abstract: A dasher assembly is provided for use within the cylindrical freezer chamber of a continuous ice cream freezer or the like. The dasher assembly includes an elongated imperforate first section which coacts with a portion of the chamber interior surface to form an elongated annular narrow passage through which a product entering the chamber is caused to initially flow at a predetermined rate so that the product upon leaving the passage has attained a predetermined temperature and viscosity whereby air, or similar fluid, mixed with the product will not migrate through the chamber and cause the product dispensed from the chamber to have uneven overrun. Affixed to and extending longitudinally from the first section is an elongated skeletal second section. The first and second sections are power driven to rotate as a unit.

Abstract: Apparatus for cooling dough in a mixer comprising a multi-section direct expansion jacket provided on the main sheet and both end walls of the mixing bowl, the jacket providing a flow path for liquid coolant progressively increasing in cross-sectional area from the inlet to the outlet, and having flow control and heat transfer maximizing means so that the velocity of coolant flow through and a minimum pressure drop across the flow path remain substantially constant and the liquid coolant is always maintained in contact with the heat transfer surfaces.

Abstract: A self-contained mechanism for the preparation handling and application of liquified materials such as coating compounds, joint sealers, crack fillers, waterproofing compounds and the like, is provided with an especially configured materials tank having primary and secondary materials heating devices and a unique engine driven hydraulic system which allows reversible and variable speed operation of the materials mixing, delivery, and cleanout devices and systems.

Abstract: An apparatus for hydrolytic degradation of plastics in which plastic material is deposited into a tubular housing via a feed hopper. An elongated screw shaft has a first section in the form of a high pitch screw thread disposed below the feed hopper to receive and advance the material to a second section. The second section of the screw shaft is in the form of a lower pitch thread for compressing the plastic material and transferring it to a longer, third section in the form of kneading discs, from which material passes through an outlet nozzle section to a cyclone separator where trapped gases and liquid may be withdrawn. The tubular housing is vented upstream of the feed hopper and a water inlet pipe is disposed adjacent to the second section of the screw shaft, downstream of the feed hopper. The outlet nozzle section is provided with pressure measuring and regulating means and a liquid level measuring and regulating device.

Abstract: A highly viscous mass to be homogenized is fed from a screw plasticizer into a mixing chamber, perpendicular to the plasticizer mouth, in which a mandrel rotates independently of the plasticizer screw to masticate the mass in a narrow annular clearance between itself and the chamber wall. The mass, force-fed through this clearance by the screw pressure, encounters several sets of free-floating balls or other rotary bodies loosely guided in annular grooves of the chamber wall, or of the mandrel, while revolving about the mandrel axis. The mandrel may have a screw-threaded rearward extension for admixing additional ingredients from one or more further chamber inlets with the mass to be homogenized, with exertion of a back-up pressure upon that mass. The chamber temperature may be controlled by the circulation of a cooling fluid through its wall and/or through the mandrel.

Abstract: An extruder machine for processing of plastic materials, rubber or polymers in which a stationary casing is provided with a generally tubular bore having an inlet opening near one end thereof, and a discharge opening at the other end thereof. A generally cylindrical rotor is rotatably mounted in the bore of the casing. The casing is comprised of a pair of generally coaxially aligned spaced apart cylindrical members, having a length substantially longer than their diameters. A heating or a cooling fluid is passed in the spacing between the cylindrical members in a heat transfer relationship. Each pair of cylindrical members is provided with expansion/contraction joints to permit longitudinal expansion or contraction of the components with respect to one another.

Abstract: Apparatus for making battery paste comprises a mixing chamber having a floor with a cylindrical upstanding side wall and a top cover. A mixing head is mounted for rotation in the chamber including at least one mulling wheel and at least one plow for moving the battery paste into the path of the mulling wheels. A cooling system is provided for the mixing chamber and its contents including a plenum chamber in direct contact with the underside of the mixing chamber floor for cooling the floor and a plurality of riser ducts extend upwardly from the plenum chamber in direct contact with the side wall. At the upper end of the risers deflectors are provided for directing a discharge of cooling air downwardly and inwardly of the upper end portion of the mixing chamber to cool the material. An exhaust system is provided for removing heat, moisture and fumes developed in the chamber and a liquid supply system is provided for additional material cooling and for washing the interior surfaces of the chamber.

Abstract: A method for flushing pigments in the form of water-containing cakes by replacing the water with an organic vehicle using an apparatus comprising a horizontal mixing cylinder having a coaxial mixing shaft, and inlet opening and a lower outlet opening. The shaft has mixing tools thereon. The pigment cake and vehicle are added to the container and the shaft is driven at a rate such that the formed pigment-vehicle paste forms on and is wound up on the shaft, leaving the water in the lower part of the container for easy removal through the lower opening.

Abstract: Machine adapted to be incorporated in a refrigeration chamber of a refrigerator to make ice cream, comprising means for containing an ice cream mix in an agitation vessel and agitating the same, and means for causing an air layer on the outer surface of the agitation vessel to move. The provision of the air layer moving means is effective to promote heat exchange between the outer surface of the agitation vessel and the cold air in the refrigeration chamber by forcedly moving the air layer which might otherwise interfere with the exchange of heat between the outer surface of the agitation vessel and the cold air in the refrigeration chamber.

Abstract: An energy saving and material conserving apparatus is provided for expanding and molding expandable thermoplastic polymer particles. Especially significant is the ability to produce molded objects of generally uniform density in the higher density range in the order of 4 - 15 pounds per square inch, or greater, as well as lower density molded objects due to improved control of the particle expansion.The particles are partially expanded in a vessel in a heated substantially dry atmosphere and agitated in a manner to provide uniform heating thereof. After an initial heating period to soften and partially expand the particles they are subjected to superatmospheric pressure to substantially prevent further expansion and are discharged and conveyed to a mold for further expansion therein.

Abstract: The proposed device for producing polymer articles from monomers is characterized in that the means for preparing the polymer melt is made in the form of at least one chamber of elastic material, the height of which is several times less than its width and length. Said chamber is placed inside a heated housing filled with a medium intended to exert the required pressure on the chamber walls.