Mobile mixing devices, mobile mixing systems, and related methods are provided. A mobile mixing device can include a frame and a mixing drum securable to the frame. The mixing drum can include a body that forms an internal cavity and can have a forward end and a bottom end. The mixing drum can also include a mouth at the forward end of the body that provides access to the internal cavity of the mixing drum. The mobile mixing device can include a heater support arm having a heater secured to an end of the heater support arm that is distal from the mixing drum. The mixing drum can be used to process cement material when the heater support arm is in a stow-away position or asphalt when the heater support arm is in a heating position with the heater facing into the mouth of the mixing drum.

A portable mixing apparatus for mixing components is disclosed. The apparatus comprises a container for receiving components to be mixed, a frame for supporting the container in a first orientation for mixing components and a driving assembly couplable with the container for rotating the container. The frame comprises: a first handle for gripping with a first hand of a user, the first handle being disposed above a centre of mass of the portable mixing apparatus, when orientated in the first orientation, the first handle extending forwardly of the apparatus over the container; a second handle for gripping with a second hand of the user while the first hand grips the first handle, the second handle being disposed below the centre of mass of the portable mixing apparatus when orientated in the first orientation, the first and second handle being arranged to enable the user to carry the mixing apparatus and re-orientate the apparatus between the first orientation and a second orientation for emptying the components from the container.

A rotating drum apparatus for the mixing and processing of materials, the rotating drum apparatus comprising: a rotating drum (12) arranged with the length of the drum and the axis of rotation of the drum extending along the horizontal; an inlet at a first point on the drum (12) for receiving materials prior to mixing and/or processing; a screw (14) within the drum (12) for mixing the materials whilst conveying them lengthwise along the drum (12), wherein the screw (14) includes a helical blade extending along the length of the drum (12) with the outer edge of the helical blade being fixed to the inner surface of the drum (12) such that material can be conveyed and mixed in separated volumes (16) between each turn of the screw blade (14); an outlet at a second point along the drum for discharge of materials after mixing and/or processing; and a plurality mixing devices (18) for promoting mixing of the material in each of the separated volumes (16) of material as the material is conveyed along the screw (14), wherein the plurality of mixing devices (18) are spaced apart along the blade of the screw (14), and wherein there is at least one mixing device (18) for each turn of the screw blade (14).

A mixing drum includes a body defining a head aperture and a discharge aperture opposite the head aperture, a head coupled to the body and extending across the head aperture, and a mixing element positioned within the volume and coupled to the body. The head and the body define a volume. The body is formed from at least a first section and a second section. The first section overlaps the second section.

An asphalt processing system is formed from a heating drum and an induction heating system. Flights move asphalt through the heating drum, which concurrently heat the asphalt along with the heating drum wall. A mixing drum can be connected to the heating drum, and include paddles or flights to move the asphalt, while concurrently mixing the material to ensure consistent temperatures through the asphalt cement. The asphalt is heating using one or more induction heating systems to quickly heat the asphalt to between 275 F. and 750 F., followed by moving the asphalt to between 275 F. and 350 F. The system can include a convection system that heats recirculated air through the heating drum. A water condenser can be employed to remove moisture during air recirculation, and reduce asphalt moisture content. The asphalt cement is optionally modified by addition of one or more rejuvenation oils. This system is particularly useful for recycled asphalt pavement, but can be used for all asphalt products.

Mobile mixing devices, mobile mixing systems, and related methods are provided. A mobile mixing device can include a frame and a mixing drum securable to the frame. The mixing drum can include a body that forms an internal cavity and can have a forward end and a bottom end. The mixing drum can also include a mouth at the forward end of the body that provides access to the internal cavity of the mixing drum. The mobile mixing device can include a heater support arm having a heater secured to an end of the heater support arm that is distal from the mixing drum. The mixing drum can be used to process cement material when the heater support arm is in a stow-away position or used to process asphalt when the heater support arm is in a heating position with the heater facing into the mouth of the mixing drum after loading of the asphalt.

A mixing drum includes a body defining a head aperture and a discharge aperture opposite the head aperture, a head coupled to the body and extending across the head aperture, a bearing member coupled to the body and defining a bearing surface surrounding the body, and a mixing element positioned within the volume and coupled to the body. The head and the body define a volume configured to contain a fluid mixture. The mixing element is configured to drive the fluid mixture toward the head when the drum is rotated in a first direction. The mixing element is configured to drive the fluid mixture towards the discharge aperture when the mixing drum is rotated in a second direction opposite the first direction. The head is made from a first material, and the body is made from a second material having a lesser density than the first material.

An asphalt processing system is formed from a heating drum and an induction heating system. Flights move asphalt through the heating drum, which concurrently heat the asphalt along with the heating drum wall. A mixing drum can be connected to the heating drum, and include paddles or flights to move the asphalt, while concurrently mixing the material to ensure consistent temperatures through the asphalt cement. The asphalt is heating using one or more induction heating systems to quickly heat the asphalt to between 275 F. and 750 F., followed by moving the asphalt to between 275 F. and 350 F. The system can include a convection system that heats recirculated air through the heating drum. A water condenser can be employed to remove moisture during air recirculation, and reduce asphalt moisture content. The asphalt cement is optionally modified by addition of one or more rejuvenation oils. This system is particularly useful for recycled asphalt pavement, but can be used for all asphalt products.

An apparatus for producing hot mix asphalt from 100% recycled pavement aggregates includes a rotatable inclined drum having a central axis and having a first and second end. A heat source spaced from one of the ends introduces hot gas into the drum via one of the first and second ends. An aggregate supply introduces aggregate into the drum through one of the first and second ends. A RAP collar spaced from the ends and positioned around the drum is used to introduce sand through openings beneath the collar into the drum as the drum is rotated. The RAP collar has an annular heat and smoke shield fastened around the drum for minimizing escape of hot gas from the drum openings beneath the RAP collar. The drum has replaceable buckets within the openings for receiving, holding and distributing sand into the drum as the drum rotates about its axis.

An improved blending apparatus for manufactured wood products with a rotating blending drum or cylinder with a pattern of alternating flights of different configurations extending from the interior of the drum. The flights lift the strands as the drum rotates to different heights before the strands free-fall back to the bottom of the drum. One flight is shorter, and may be trapezoidal in cross-section. The second flight is taller, and may have a bull-nose configuration with substantially vertical sides. During operation, the design of the bull-nose flight tends to hold more strands and to carry them closer to the top of the drum before the strands drop and fall. In contrast, the shorter height and angled sides of the trapezoidal flight tends to hold fewer strands and to not carry them as high along the side before strands drop and fall. The alternating pattern causes a more consistent and dispersed fall of strands as the drum rotates, resulting in a significantly larger and more consistent amount of the sprayed adhesives and waxes being applied to the strands, and not passing through gaps to build up on the drum wall.