Abstract: A centrifugal separator has a separation chamber housing split into mating, unhinged clamshell sections. One clamshell section includes a pipe extending through the other clamshell section. The separation chamber rotates about the axis of the pipe. A spring secured to the frame of the separator surrounds the pipe, bearing against the second aforementioned clamshell section. This spring yieldingly opposes separation. The pipe and axis of rotation are oriented vertically. The pipe is divided into an upper inlet section and a lower outlet section by a flange or baffle. In alternative embodiments, the inlet pipe is fixed to different components, namely, one clamshell section, the other clamshell section, or to the frame of the machine. A slurry is introduced into the pipe inlet section, falls due to gravity, strikes the baffle, and exits the pipe through holes formed in the wall. The baffle redirects incoming slurry radially, so that when the separator is operated, centrifugal forces immediately act thereon.

Abstract: A concrete reclaimer includes a concrete processor having a rotating inclined screen and a pipe discharging water. Fresh concrete being disposed is poured into an open end of the rotating screen, and migrates toward the opposite open end. The concrete passes over a fine mesh and then a coarse mesh screen, washing out cement slurry when passing over the former, and removing sand when passing over the latter. Gravel is discharged from the remaining screen open end. Specially configured nozzles are arranged in a particular pattern along the pipe. Collection and storage pits are provided for the resultant segregated cement slurry, sand, and gravel. In a preferred embodiment, a concrete processor includes a five horsepower pump and a ten horsepower screen rotation motor.