Abstract: The invention is related to a method for dispersing two phases in an extraction process so that each extraction step includes several mixing stages, and at each mixing stage the mixing is carried out by means of a vertical circulation and advantageously at least one mixing stage is provided with an intensified vertical circulation. According to the invention, the dispersing apparatus of one extraction step in an extraction process is formed of several mixers provided with circulation cylinders (11). Advantageously at least one of the mixers is provided with a dispersing pump (16).

Abstract: The mixing apparatus includes a centrifugal pump having a casing and an impeller located therein. The casing has a axially extending tubular inlet located centrally on its end wall, the discharge being a tubular projection on the side wall's casing. A second casing substantially identical to the casing of the pump, has a tubular projection on one of its end walls coupled to the inlet of the first mentioned casing. Water is delivered to a tubular projection on the side wall of the second casing. Particulate polymer is delivered to the other end wall of the second casing. The swirling water in the second casing creates a lower pressure at its discharge to draw the polymer downwardly and into the first casing where it is vigorously mixed with the water.

Abstract: A pressure vessel for a backpack agricultural sprayer is mounted within a container of the sprayer and connected to the sprayer pump so that liquid from the container is forced under pressure into the pressure vessel for a spraying discharge therefrom. Leakage of liquid past the piston of the sprayer pump is contained by a leak proof diaphragm in a diaphragm chamber which is connected by a conduit to the interior of the sprayer container. The diaphragm is connected to the piston to be operated therewith thus providing two separate but simultaneously acting pumps. The first pump is the piston pump for pressurizing the liquid for spraying discharge. The second pump is the diaphragm which forces liquid back and forth between the container and the diaphragm chamber in a high velocity stream which agitates the contents as the stream is projected into the container interior.

Abstract: An apparatus and method for mixing dry particulate material and liquid is shown. The dry material is initially mixed in a mixing module. The pre-mixed slurry then passes to a two stage mixing tank system featuring a smaller, primary tank and a larger capacity, secondary tank. The premixed slurry passes into the primary tank for additional mixing, then flows over a weir into the secondary tank. A portion of the slurry in the secondary tank is recirculated to the mixing module while the density of the slurry in the primary is monitored. The overall slurry density is controlled by adjusting the dry material entering the mixing module based upon the density reading taken from the primary tank.

Abstract: The device provides for intercepting a determined quantity of the abrasive mixture used in cutting granite or hard stones from conduit (2) which introduces the mixture to the sawing machine by means of valve (3). The mixture then is collected in a dosing hopper (1) where the density and the viscosity are determined. Afterwards the mixture is washed with water and is weighed by means of device (11) so that the quantity of the metallic middlings may be determined. Finally, the discharge valve (4) is opened so that the mixture may be recycled to the conduit (2).

Abstract: The invention relates to a method for dispersing the two liquid phases of a solvent extraction process well together, for controlling the desired type of dispersion and for raising the created dispersion to a level essentially higher than the liquid surface in the mixing tank. In the apparatus of the invention, to the circulation cylinder (6) of the mixer there is connected the heavy phase return conduit (27) and the light phase return conduit (29) entering from the settler of the same extraction step. In the top part of the mixer, coaxially with the turbine pump (9), there is installed the dispersion pump (12) where the dispersion rises to above the liquid surface (8) of the mixer through 2-24 rising pipes (15). The top ends of the rising pipes (15) are connected to the circular pipe (18), wherefrom the dispersion flow is conducted to the next stage through the collecting trough (22).

Abstract: A floating mixer of the type including a float for buoyantly supporting the mixer in a water treatment basin, a mixer drive motor mounted on the float and extending upwardly therefrom, and a propeller drivingly connected to the motor and disposed below the float for pumping liquid downwardly to effect mixing in the water treatment basin. A foam dispersing spray nozzle is mounted above the drive motor for discharging in a downwardly directed generally conical spray pattern outwardly of the drive motor, and an auxiliary pump is provided for pumping liquid from the basin to the spray nozzle.

Abstract: Gaseous mixtures are formed by introducing plural gases into a container with a predetermined dilution ratio of one gas in the other, withdrawing the gases from the container and admixing them in a pump, and returning the admixed gases to the container. Further dilutions according to the same or a different dilution ratio can be performed, thereby to obtain a highly dilute gas in accurately predetermined proportions. The gaseous mixtures have utility in inhalation therapy and other processes, and may for example comprise mixtures of oxygen or ammonia in diluents such as nitrogen, carbon dioxide, etc.

Abstract: A high pressure mix-head for use in reaction injection molding systems includes a full cross section plunger and a piston valve assembly selectively positioned in response to recirculation and pour cycles to control flow through recirculation passages formed on the O.D. surface of a mix-head sleeve.

Abstract: A mechanism for agricultural chemical formulation including a mixing tank and a dispersion tank. A rotatable shar blade is mounted within the dispersion tank which has a bottom wall and a side wall. The formulation is transferred from the mixing tank into the dispersion tank through an opening in the bottom wall with the shar blade being in close adjacency to the opening in order to permit the shar blade to strike the formulation as soon as it enters the dispersion tank. The formulation is re-circulated back into the mixing tank and the re-circulation between the two tanks is continued until it reaches the correct consistency.

Abstract: A crystallizer comprising a mixing zone of an organic solvent containing ions of a metal extracted therein and an aqueous separating solution provided at the upper part of a main crystallizer body, a lower-part opened organic solvent settling zone provided outside of the mixing zone for receiving and settling the organic solvent overflowing out of the mixing zone, a crystals developing zone having a downwardly narrowing cross section provided at the lower part of the main crystallizer body, a descending pipe extending from the lower end of the mixing zone to the lower part of the crystals developing zone, a crystals fluidizing medium inlet provided at the lower end of the crystals developing zone, a separating solution discharge pipe and a crystals discharge pipe.

Abstract: A reactor vessel is provided for saponification processes having reaction times of about 2-5 minutes. The reactants are fed sequentially through a load cell, for weighing, and feeding into a reactor containing water. The reactants are sequentially mixed and reacted by recycling, and at the end of the reaction time, the recycling is terminated and the finished product is pumped to storage. A microprocessor controller may be provided to sequence the feed and amount of reactants and the reaction times. The reactor also may be used to function as a mixer for batch reactions on a semi-continuous basis.

Abstract: A spouted bed blender apparatus is disclosed that is suitable for mixing and homogenizing two or more types of nuclear powders in preparation for the subsequent manufacture of nuclear fuel pellets.

Abstract: The invention relates to a process for the preparation of dispersions of plant protection agents, wherein at least one active ingredient being metered, in the molten form, into the outlet stream of a jet, which stream contains a solution of the formulation aids. The process is suitable for all active ingredients which form a stable melt and have a melting point above 70.degree. C. The resulting dispersions have advantageous stabilities.

Abstract: An apparatus for the preparation of sterile suspensions and solutions is disclosed which includes a container wherein a starting mixture is subjected to high intensity mixing by means of a high speed, high shear external mixer disposed in an external recirculation loop. The mixer used in the present invention is a revolving hollow cylinder open at the bottom thereof and having grooves in the sides thereof, such that the mixture is drawn through the bottom of the mixer head and forced radially outwardly through the grooves. The mixer head is preferably disposed in the upper leg of a T-shaped fitting of the recirculation loop, and a special shaft seal is used to prevent leakage of the materials being treated along the drive shaft used to rotate the mixer head.

Abstract: Size formulations are supplied to slasher size boxes in an efficient manner allowing nearly unlimited variation in size formulations, minimizing the floor space of size formulation equipment, minimizing energy waste, and providing reclamation of used size. A number of size formulation components are mixed and heated to produce a size formulation having a predetermined composition and temperature. The size formulation is circulated in a closed loop past each of the size boxes. The amount of size in each size box is sensed by a level control, and the size formulation is withdrawn from the closed loop and supplied to a size box in response to the level sensing. A plurality of formula stations are provided, at least one adjacent and in operative communication with each size box, and additional size formulation components are added to the size formulation at each size formula station, and mixed with the size formulation prior to introduction into the size box.

Abstract: Solids mixing well structure and methods are disclosed for mixing a solid having a first specific gravity with a fluid having a second specific gravity to produce a slurry having an intermediate specific gravity and a resultant pressure greater than atmospheric pressure. The solids can then be transported in the form of a slurry using the resultant pressure. At no time do the solids come in contact with a pump member. The apparatus and methods are particularly suited for transporting coal and solid waste material. No moving parts are required other than a pump to supply fluid pressure. A first cylindrical member receives at its inlet fluid at a pressure greater than atmospheric pressure and delivers the fluid at a first pre-determined pressure to a mixing region. A second structure receives at its inlet solids at atmospheric pressure and delivers the solids at the first pre-determined pressure to the mixing region down stream of the fluid.

Abstract: A method of continuous mixing and homogenization of a main substance and at least one additive substance, liquids in particular, and a device for executing the method, said device comprising a primary conduit (1) for circulating the main substance, a secondary conduit (5) for circulating the main substance and the additive substance, to which conduit a mixing unit (7) is connected, and at least one proportioner (4) for supplying the additive substance, said proportioner constituting a connection between the primary and secondary conduits, the main substance and the additive substance being supplied to the secondary conduit in dependence of a discharge from the secondary conduit.

Abstract: The small volume recirculator includes a mixing chamber for receiving recirculated slurry from an inlet arranged to carry the slurry on its return path from the analyzer. An impeller is provided in a housing which is connected to the mixing chamber by way of an opening such that the housing receives the slurry from the reservoir through the opening and provides passage by way of an output tube to the analyzer. The connection between the housing and the chamber is sufficiently direct so that a vortex is set up in the mixing chamber. This provides the mixing. The impeller is rotatably mounted by shaft means which extends above the level of the slurry to a power drive train in avoidance of any shaft seals in the slurry path.

Abstract: A mixing system comprising a movable mixing tub, a pumping source and a leveling valve interconnected to the mixing tub and the inlet or outlet of 10 the pumping source. The mixing system may include jet-type mixer to mix dry materials with fluid to be further mixed in the movable mixing tub.

Abstract: A method and apparatus for the continuous processing of polymers and, more particularly, a method and apparatus for the continuous dilution of solutions of long-chain polymers by successive or multiple recycling without degrading of the polymers.

Abstract: A portable well drilling mud storage and recirculation unit includes a mud storage tank mounted on an over-the-road semi-trailer having an engine driven circulating pump mounted onboard and adapted to withdraw mud from the tank for circulation to the well and for recirculation through a set of mud agitating nozzles disposed in the bottom of the tank. A mud degassing vessel, a solids separator unit and an additive blending unit are all mounted above the tank. The degassing vessel is supported by hydraulic cylinder actuators for movement between a retracted transport position and a vertically elevated working position.

Abstract: Particulate materials are blended in a vessel provided with a plurality of vertically extending conduits therein. The vessel comprises a downwardly converging frustoconically shaped bottom wall which defines the lower region of the vessel. The lower ends of the conduits extend through corresponding openings in the bottom wall and are connected by suitable conduit means with a solids outlet at the open bottom of the bottom wall, an outlet conduit extending downwardly therefrom with a solids flow control valve interposed therein. A recycle conduit extends from the interior of the outlet conduit at a position above the solids flow control valve therein upwardly to a solids hopper positioned above the vessel. A blower is connected to the upper portion of the vessel and applies vacuum thereto and to the recycle conduit for withdrawing particulate materials or solids through the recycle conduit into the hopper.

Abstract: An apparatus and method for mixing and distributing solid material in which the material is continuously introduced into a vessel and a pressurized gas is introduced into the lower portion of the vessel at a velocity sufficient to pass upwardly through the material in the vessel to promote mixing of the material. A plurality of outlets are disposed in an angularly spaced relation along the vessel for permitting the material to continuously discharge to a plurality of selected locations. The excess gas in the vessel is removed, cleaned and introduced back into the vessel.

Abstract: A floating downflow mixer including a float having a central float passage and a pump casing mounted on the float with its upper end spaced below the float to provide an intake at the underside of the float. A drive motor is mounted on top of the float and has an integral shaft extension extending downwardly through the float passage and a propeller mounted at its lower end in the pump casing. A shaft stabilizer tube is supported on a mounting plate attached to the top of the float and extends downwardly through the float with an anti-deflection bearing at its lower end surrounding the shaft and having a running clearance therewith to inhibit deflection of the shaft. The mounting plate seals the float passage between the stabilizer tube and float and a mechanical rotary seal seals the interface between the stabilizer tube and shaft to prevent entrance of air to the anti-deflection bearing and propeller.

Abstract: An apparatus and process for automatically and rapidly making a paint having the color values of a standard paint; a computer is used which is connected to and controls a multiplicity of metering pumps that are each individually connected to a supply of components used to make the paint such as binder solution, solvent and colorants; the components are accurately metered into a mixing vessel and mixed, paint is circulated through a recycle loop attached to the vessel, the loop contains a cell having a viewing window through which the paint is pumped, a colorimeter views the cell and determines the color values of the wet paint and feeds these values back to the computer which compares the values to values of the standard paint and calculates the amount of colorant to be added and signals the metering pumps to add colorant, the process is repeated until the paint is brought within the tolerance values of the standard paint.

Abstract: A motor-transportable plant for delivering substances for treating roadways or the land, in which a tank is divided by a wall into two separate chambers, each accessible through a manhole, and which can be connected together by opening valves provided in the wall; one of said chambers comprises stirring means for a liquid and a solute contained in the chamber, and means for withdrawing the formed solution and feeding it to the outside of the tank, a motor being provided for said withdrawal and for feeding the solution; the second chamber comprises stirrer means and means for withdrawing a solid material contained in the chamber and for feeding it to distributors therefor; said stirrer and withdrawal means are extractable from the chamber through an aperture closable by means of a suitable cover; the tank is supported by a rigid quadrilateral frame provided with legs which can extend by hydraulic control and are each provided with orthogonal shafts which are inserted into the cross members of the frame to defi

Abstract: A processing bath is accommodated in a container having a pipe which communicates with the interior of the container at two different locations of the latter. The bath is circulated through this pipe and a pump for circulation of the bath is provided in the pipe. Several tubes extend into the bath and each tube has an outlet opening in the region of the inlet end of the circulation pipe. The outlet openings of the tubes are all located at different levels below the surface of the bath. The tubes are respectively connected with supply pumps which, in turn, are connected with respective sources of concentrates and a diluent required to maintain the strength of the bath within predetermined limits. A sensor senses the amount of material processed in the bath and causes the supply pumps to pump the concentrates and diluent into the bath in dependence upon the amount of material processed.

Abstract: Combination of steps are disclosed which enable the preparation of stable latices of high solids content. The process is characterized, inter alia, by the establishment of a flow of steam as a continuous phase into which an emulsion of a cement of the polymer is dispersed as an aerosol of latex droplets in a solvent-vapor continuum, followed by coalescence of the latex droplets and separation of the resulting coalesced liquid phase from the resulting solvent-vapor phase. In one embodiment provision is made for the continuous production of aqueous emulsion of polymer solvent cement essentially entirely of precursor latex particle size, which may be of narrow size distribution, or may have imparted thereto a wider size distribution, or an altered particle size or viscosity or both.In other embodiments special provisions are made for altering the viscosity of the aqueous polymer/solvent emulsion and/or of the latex product, by special treatment of at least a part thereof before delivery from the system.

Abstract: A process for the production of synthetic linear polymers which contain atives is described, in which the polymer and the additives, both in the fluid state, are mixed, the resulting mixture is homogenized, and the homogenized mixture is in part conveyed to apparatus which uses it to make a product and in part is recycled, the recycled amount being preferably at least 5% of the total weight of the mixture. The preferred polymers are polyamides. The additives may be of any kind, e.g. antistatics, and they may be added as such or as a master batch consisting of a polymeric base containing finely particulated solid materials such as carbon black, matting agents or pigments.

Abstract: An apparatus for desorption of gas from a liquid comprises a chamber and a pump for circulating liquid from the chamber through an external system and returning this liquid to the chamber. A part of the liquid delivered by the pump is used to power an aspirator in the chamber, the aspirator recirculating liquid within the chamber, resulting in desorption of gas which collects within the chamber for removal by known means. The rate of recirculation through the aspirator, and hence the rate of gas desorption, is thus not limited to the rate of flow through the external apparatus.

Abstract: A semicontinuous or continuous process for preparing semisolid dispersions is provided wherein oil and water phases are circulated from a single vessel through a system of mixers and homogenizers until a dispersion is obtained.

Abstract: Apparatus useful for blending predetermined accurately measured quantities of gaseous components transferred from separate pressurized supply tanks to a gas blending system, preferably on input signals received from a computer. The gas blending system includes a mixing vessel, a pressure transducer associated with said vessel for measuring the pressure of the gases, and producing an output signal and transmitting same to the computer, a circulating pump connected in series via conduits which form a circuit, and valves; preferably a multi-component valve assembly operatively communicating the two ends of the conduits for flow of gas therethrough in providing the functions of purging gas from the system, evacuating the system of gases, admixing the gaseous components received from the pressurized supply tanks to form the gaseous blend, and producing a product output blend of the admixed gases.

Abstract: A mixing apparatus for the continuous mixing of a dry bulk material with a liquid to form a slurry. The dry material is introduced through an elongated vertical tube while the liquid is brought into an elongated cylindrical chamber around that tube in a rotary motion under pressure. The liquid with its rotary motion and being under pressure exits from an adjustable annular orifice at the same point that the dry bulk material is added to the slurry whereby the jetted liquid effects the initial mixing process while deflecting the material into a reservoir. The slurry thus formed is circulated by a suitable pumping system from the reservoir for use. The unused slurry is pumped back into the reservoir by way of a voluted shroud which envelopes the mixing portion of the initial mixing device. Centrifugal force resulting from this rotary motion of the slurry tends to pull the newly mixed slurry out into the reservoir for a continuous intimate mixing process.

Abstract: An emulsifying system for mixing accurate ratios of two or more liquids to form an emulsion. The liquids are preferably, but not exclusively, water and oil. A supply circuit delivers accurate mixtures of the two or more liquids. An emulsifier emulsifies the mixture to form an emulsion. A container stores a quantity of the emulsion that may vary between predetermined limits and an output circuit is provided to draw the emulsion from the storage container. The emulsion storage container permits the supply of the mixture and the emulsion to the storage container at a rate independent of the rate at which the emulsion is drawn from the output circuit.

Abstract: An apparatus for carrying out the process for solubilizing a suspension of casein in powder form in an aqueous medium, the casein suspension containing at most 270 g of casein per liter of aqueous medium, which comprises leaving the casein suspension to age for at least 10 minutes, after which a solubilizing agent is progressively added to this suspension until a homogeneous solution is obtained.Application to acid casein, the solubilizing agent being an alkaline agent. Application to phosphocalcic and rennet caseins, the solubilizing agent being a calcium-complexing agent.

Abstract: Two conduit means having a preselected volumetric relationship one to the other are utilized in the dilution of a sample by filling one of the conduit means with a diluent liquid and the other with a sample material, then connecting the two conduit means together in a closed conduit loop and circulating the contents of the loop through the loop in order to cause uniform mixing of the sample material with the diluent liquid. In a preferred embodiment the diluted sample material is resampled from the conduit loop for further use or analysis.

Abstract: Particulate materials are blended in a vessel which has a plurality of vertically extending conduits therein. The conduits are provided with a plurality of openings within the vessel, and terminate in a common collection zone. Certain of the openings are provided with baffle means to permit particles to enter the tubes when there is flow of particles through the tubes from higher elevations. The locations of the openings and the baffle sizes are selected such that the total flow of particles through the conduits at progressively lower elevations in the vessel increases substantially as a linear function with respect to vertical distance measured downwardly. An inverted cone can be employed in the bottom of the vessel to provide more uniform mixing of materials that do not flow through the conduits.