Classifying – separating – and assorting solids – Treatment subsequent
Patent
1979-03-15
1981-02-10
Hill, Ralph J.
Classifying, separating, and assorting solids
Treatment subsequent
209250, 209254, 209273, 209355, 209413, 51425, B07B 104
Patent
active
042500249
ABSTRACT:
A glass bead separating apparatus and method are disclosed, for use with a slurry blast cabinet. The system is capable of continuous operation, so that glass beads which are broken and undersized can be separated out of the slurry along with debris from the blasting operation, on a continuous basis while blasting takes place, and the slurry can be continuously returned to the blasting cabinet in the purified condition. Used slurry is withdrawn from a hopper at the bottom of the blasting cabinet, pumped up to the top of the separator apparatus and delivered through a nozzle over an inclined screen sized to pass everything but reuseable, whole glass beads. The reuseable beads are collected in a bin, while the remainder passes down onto another, much finer screen which retains nearly everything but the liquid slurry medium, which is preferably water. The relatively clean water drops into a holding tank at the bottom of the separator apparatus, with an overflow weir provided to maintain a preselected water level. The overflow water continuously flows into the collection bin where it is mixed with the reusable beads, and a reconstituted slurry is delivered back to the slurry blast cabinet by gravity flow. Some of the clear water in the holding tank is pumped up to a set of spray nozzles over the inclined screen, and is sprayed onto the slurry to help wash debris off the beads and through the screen. This water falls back into the holding tank.
REFERENCES:
patent: 3103765 (1963-09-01), Nolan
patent: 3122498 (1964-02-01), Werner
patent: 3363769 (1968-01-01), Wilmot et al.
patent: 3633743 (1972-01-01), Gooding et al.
Soares Paul
Stanley Henry J.
Hill Ralph J.
Vacu*Blast Corporation
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