摘要:
A system for adjusting a proper slump in a mixing drum of a mixing truck, the system includes a frame having an opening through which the mixing truck can pass; a camera mounted on the frame for viewing the mixing truck; a monitor for monitoring the camera, wherein the monitor is at a location remote from the mixing truck; a water pipe mounted on the frame for depositing water into the mixing truck; and a control panel for controlling the depositing of water into the truck, the control panel being adjacent the monitor. Optionally, the system may include a plurality of nozzles mounted on the frame and arranged for washing an exterior of the mixing truck. The system can be controlled from the remote location.
摘要:
A heavy duty rotary concrete mixing drum capable of attachment to a vehicle. The drum comprises a first end which engages a vehicle powered drive assembly which rotates the drum for mixing of said concrete and a second end from which mixed concrete is discharged. The drum is manufactured from at least one layer of plastics material; wherein the drum includes a wall having integral internal formations which promote mixing and discharge of said concrete and an inner surface which promotes mixing of the concrete.
摘要:
The process is implemented in a plant which comprises a homogenising apparatus (1) consisting of a first vertical container (10) having axial stirring devices (11) and peripheral stirring devices (12) with independently actuated blades (15), and grinding apparatus (3) comprised of an external static cylindrical body (21) with centripetally projecting stubs (24) and wherein is housed an internal rotary cylindrical body (25) provided with centrifugally projecting stubs (24); a continuous mixter (4) of which the internal surface (28) has crossing furrows (29) and wherein is housed a cylindrical body (34) of which the external surface (30) has second furrows which also cross each other, so that all the furrows form conduits which initiate in an extreme chamber (31) and which terminate in an extreme chamber (32) for the outflow of fluids resulting from produced mixtures; and a nozzle (5) for supplying the fine fluid paste, said nozzle being comprised of a main tubular body (33) having on the one hand an extreme annular enclosure (36) provided with second inlet nozzles (37) for additives and pressure gas fluid and, on the other hand, outlet conduits which open into ports (38) of the main tubular body (33).
摘要:
A method for making a concrete mixing drum includes forming a first layer of at least one polymeric material having a surface providing at least a portion of a barrel wall of the drum and a spiral mixing blade projecting from the wall on an inner surface of the drum and forming a second layer on the formed first layer.
摘要:
It has been found that hard attrition-resistant zeolite X molecular sieve bodies can be produced by admixing zeolite X powder and meta-kaolin clay followed by the hydrothermal conversion of the meta-kaolin clay to zeolite X. When a reaction mixture contains from about 70 percent to 90 percent by weight of zeolite X powder and from about 10 percent to 30 percent by weight of meta-kaolin clay, this admixture will hydrothermally convert to essentially all zeolite X material. This conversion is accomplished without the addition of any silica source other than the silica provided by the meta-kaolin clay.