The invention relates to a mixing and conveying system for dry mortar materials. The dry mortar materials can be obtained from a storage silo (1) through an openable closure panel (3). A pipe (17), in which a drivable screw conveyor (4) is mounted, is arranged under the closure panel (3). The pipe (17) leads into a mixing and buffer container (18), in which a coil (20) is rotatably mounted on a central axis (19). The mixing and buffer container (18) has a volume which equals at least 1.5-times the minute capacity of the pump-screw conveyor (14). It is thus ensured that the dry mortar material is mixed therein with the added water for at least 90 seconds or longer. The mixing and buffer container (18) leads into a pipe (15) at the bottom having a pump-screw conveyor (14) which conveys the mixed mortar into a hose (5). The pump-screw conveyor (14) can be allowed to run backward. The coil (20) runs continually such that the mortar is constantly agitated to prevent setting.

The hydration apparatus includes an air augmentation feature that intersects the ingredients. The air augmentation inlet is positioned to cause turbulence in the ingredients prior to the ingredients passing a liquid discharge nozzle that hydrates them.

A mixing apparatus for mixing powder and liquid, includes: an apparatus main body having an internal space; a cylindrical member arranged in the internal space with one end facing upward and the other end facing downward, the one end and the other end being opened; a powder dispersing portion arranged above the apparatus main body, the powder dispersing portion dispersing the powder into a space of the cylindrical member; a liquid spraying portion arranged in a vicinity of the powder dispersing portion, the liquid spraying portion spraying the liquid into a space of the cylindrical member; a collection portion arranged below the apparatus main body, the collection portion collecting a mixed powder consisting of the powder dispersed by the powder dispersing portion and the liquid sprayed by the liquid spraying portion; a filter arranged around the cylindrical member in the internal space; and a discharge port discharging air in the internal space through the filter.

Method and apparatus to facilitate recycling of at least one fraction of bitumen-containing materials. This can be accomplished by dissolving the at least one fraction, for example, maltenes or asphaltenes in roofing shingles, into at least one solvent. In one aspect, the apparatus comprises a dissolution vessel, a tumbler positioned therein, and at least one solvent distributor. The tumbler is configured to facilitate wetting the bitumen-containing materials with solvent. In a second aspect, a system comprises the apparatus, a solid-liquid separator, for example, a vibratory screen, and at least one solvent-fraction separator, for example, a flash drum. The at least one solvent can comprise one or more solvents useful to extract the at least one fraction. In a third aspect, a first fraction is extracted from the bitumen-containing materials with a first solvent composition, then a second fraction is extracted from the remaining bitumen-containing materials with a second solvent composition.

A mixing chamber for mixing a variety of dry ingredients with a liquid is disclosed. The mixing chamber has an accumulation chamber that evenly distributes ingredients as they pass a liquid spray nozzle, resulting in uniform hydration. The liquid may be sprayed at a variety of pressures to achieve varying levels of granule hydration to permit the manufacture of dough, batter, or other compositions. Even dry ingredients which are generally slow to absorb moisture may be rapidly and evenly hydrated without an excess of liquid. Process parameters, such as volume flow rate of the dry ingredients, can also be varied.

A device for processing oil or gas well waste solids, the device including a pressurizing discharge unit having a casing. The casing includes a solids inlet and a water inlet. The solids inlet receives treated solids into a front end of the casing, where the treated solids are exposed to a reduced pressure in an internal chamber of the casing of less than atmospheric pressure. The water inlet receives water and adds the water to the treated solids in the internal chamber. The casing includes an extruder screw unit, the extruder screw unit having progressive screw sections located inside the internal chamber and corresponding to conveying mixing and pressurizing screw sections. The conveying screw section conveys the treated solids along a long axis length of the extruder screw unit from the solids inlet towards a discharge end of the casing while the reduced pressure is maintained, the mixing screw section mixes the treated solids and the water together to form a paste, and the pressurizing screw section conveys the paste towards the discharge end and generates, in a portion of the casing downstream from the mixing screw section, a backpressure that is greater than atmospheric pressure. The casing includes a die assembly to extrude the paste through an orifice of the die assembly located at the discharge end while maintaining the backpressure on the paste in the internal chamber. Method and system embodiments for processing oil or gas well waste solids are also disclosed.

A system for preparing a polymeric mixture includes: a containment device configured to distribute dry polymeric materials; a receiving chamber in fluid communication with the containment device; a wetting bowl; a dispersing channel; and a mixing chamber connected to the dispersing channel. A method of preparing a polymeric mixture includes distributing water and dry polymeric materials through the various components of the system and mixing the materials with the mechanical mixing device.

A material wetting system for wetting a powder material includes a liquid supply system, a material mixing unit, a material supply system, and a shroud assembly. The liquid supply system includes a supply line. The material mixing unit is in fluid communication with the supply line and includes a central cavity having an open upper end configured to receive a supply of powder material. The material mixing unit is configured to receive liquid from the supply line and is operatively connected to a reduced pressure source to draw air into the central cavity. The material supply system includes an orifice and is configured to feed powder material through the orifice, with the orifice disposed above the central cavity of the material mixing unit. The shroud assembly is disposed about the open upper end of the central cavity of the material mixing unit and the orifice of the material supply system.

A seed treatment system incorporates an incline conveyor to mix freshly treated seed. A metered seed flow is maintained. A treatment applicator positioned above a tail end of the incline conveyor applies a seed treatment to the metered seed flow to form a treated seed flow. The treated seed flow freefalls into a transition zone and pre-mixes before moving upward within the incline conveyor. An eddy may form within the treated seed flow due to a partial obstruction within the incline conveyor. A prescribed amount of the treated seed flow backflows into the eddy in a cascading manner. Backflow movement may be contrary to conveyance of a substantial amount of the treated seed up through the incline conveyor. The seed treatment distributes about the treated seed flow within the incline conveyor. The treated seed flow discharges with complete cleanout at a head end of the incline conveyor.

A dynamic wetting head with which polymers are prewetted and mixed. The prewetted and mixed polymers are typically used in the process of polymer flooding during chemical enhanced oil recovery. The dynamic wetting head comprises a prewetting unit and a mixing unit. The prewetting unit has a feed spigot provided in communication with a source of powder and projecting at least partially into a wetting chamber of the prewetting unit. The feed spigot feeds polymer powder into the wetting chamber. Furthermore, at least a first spray nozzle sprays water into the wetting chamber. The mixing unit comprises a mixing chamber with an inlet provided in communication with the wetting chamber outlet, a feed water inlet, and an outlet. A mixer is furthermore arranged within the mixing chamber.