Abstract: Disclosed is a method of transporting liquid pitch containing lumpy coke wherein the lumpy coke contained in the liquid pitch is pulverized by a specific procedure and the pitch containing the thus pulverized coke is then transported. Disclosure is also made for a specific apparatus used for the method.

Abstract: A pressurized roller-colloid mill in which the conventional rotor and stator of a colloid mill are preceded by one or more adjustable-thrust roller bearing assemblies disposed in a series relationship. A product to be refined in the form of a slurry is pumped into the feeding port of the mill to pass between the rollers and the inner and outer raceways of one or more roller bearing assemblies, then to the gap between conventional rotor and stator elements of a colloid mill. The multiple rollers and their cooperating raceways constitute working surface areas far in excess of conventional colloid mill rotors and stators. Gang mounting of the rotor of the mill and the inner raceways of the roller bearing assemblies upon a common axially movable shaft permits gap adjustment for the enhancement of milling action. A relief valve at the outlet of the mill cooperates with the adjustable gap to provide an output of product of any desired particle size down to the low micron range.

Abstract: A wet grinding device having a container for receiving therein products to be ground as well as grinding balls, the container being equipped with a mixer, a delivery device for feeding the products to be ground into the container, a discharge outlet for the broken-up products, as well as a drive device for the mixer. The wet grinding device is characterized by an operating chamber divided into a plurality of grinding zones of increasing volume, the operating chamber including a mixer shaft therethrough, the latter being rotatably horizontally supported by the container. The shaft is provided with blades which have a diameter which is proportional to the diameter of the respective grinding zones.

Abstract: An animal excrement disposal apparatus having a conical chamber with a large removable top which will permit easy disposal of solid type animal excrement. A water input means is provided for the conical container. The container is supported upon a small stand which allows portability of the overall device. A waterproof electric motor is provided which is permanently attached to the stand and supports the conical receptacle thereabove. A series of cutter blades are provided on the motor shaft which extends well into the conical receptacle. Beneath the cutter blades is an additional bowl like receptacle having propeller blades mounted therein. This receptacle together with the propeller blades functions to emulsify any solid particals remaining after passage through the receptacle and the cutter blades. A drain is provided to exhaust the emulsified solids and liquid.

Abstract: An improved apparatus and method for manufacturing ground wood pulp from ligno-cellulose containing wood block material by forcing the block material to be ground against the end surface of a rotatably mounted grinding disc which has projecting grinding means in the shape of elevations or ridges located on the disc end surface which define grooves directed towards the end surface circumference. The apparatus includes a pressure plate for pressing the block material along a longitudinal side against the disc end surface with the fibers directed outwardly from the center of the grinding disc and toward the periphery of circumference of the disc while the fibers are separated. In this manner the fibers are oriented in the same direction as the edges of the elevations or ridges which carry the fibers radially outward and the elevation edges engage the block fibers under a movement component which is transverse to the longitudinal direction of the fibers.

Abstract: The invention is directed towards a straining means in a cooling system which has a cooling medium inlet, a cooling medium outlet, a screen located between the inlet and outlet and means operable on the inlet side of the screen for keeping the screen clean and free of foreign objects. When using a cylindrical screen, the means for keeping the screen clean comprises a spiral screw-type member rotatable within the cylindrical screen and having means along at least a portion of its edge for grinding foreign material on the inlet side of the screen into a size small enough to pass through the screen.

Abstract: Crude pulp stock is recovered from municipal waste by selectively pulverizing garbage (food waste) in the waste; removing the pulverized garbage; thence, moistening the rest of the waste so as to selectively weaken the materials, such as waste paper, usable as crude pulp stock; and taking out the pulverized crude pulp stock.

Abstract: A receptacle accommodates a waste paper suspension and a rotor located adjacent one portion of the receptacle wall. A first outlet is provided in the wall in the region of the rotor so that pulp produced by shredding of waste paper by the rotor can be discharged from the receptacle. A strainer is interposed in the first outlet, and a second outlet is provided in an opposite portion of the wall and arranged to discharge matter having low specific gravity from the receptacle.

Abstract: A centrifugal mill for treating refuse is fed so that the refuse comes into contact with a pre-breaker mechanism and subsequently into contact with a series of comminution mechanisms. Feeding of the refuse is simultaneously accomplished with the injection of a fluid carrier medium such as air, water, aqueous sewage, and the like which is blended with the refuse. The mill is provided with mechanisms for adjustably controlling the through-put rate of the refuse and the fluid carrier medium.

Abstract: Three sandmill processing vessels are mounted on a central supporting column. The rotors in the sandmill vessels are separately driven by hydraulic motors mounted on the upper portion of the central column. Separate pumps driven by hydraulic motors are mounted below the vessels for pumping the material to be processed through the vessels. An electric motor for driving the hydraulic motors may be remotely positioned to eliminate explosion hazards from electrical sparks. Indicator lights included in safety control circuitry for the electric motor are energized to indicate the malfunction if the motor is automatically deenergized.