Patent
1975-11-28
1976-12-07
Christian, Leonard D.
259 7, B01F 518, B01F 526
Patent
active
039958396
ABSTRACT:
Disclosed is an apparatus and method for wetting dry particles and dispersing the particles in a liquid. The dry particles are delivered onto a vibrating tray, which has a circular discharge opening therein and a circular plate secured to the tray below the opening. Positioned below the tray is a closed container, which includes a body of liquid and an opening in the container lid for receiving the vibrating plate member. A vertical conduit section in the container has an open end positioned above the liquid surface and directly below the plate member.
In a typical operation, a liquid stream under pressure passes upwardly in the vertical conduit and discharges in the form of a circular spout. From the tray the particles fall onto the vibrating plate member, and then downwardly, in a circular curtain pattern, into the liquid spout. In practice, the dry particles will strike the liquid just beyond the apogee of the spout. This enables the particles to move on a downward vector, along with the liquid, so that good wetting and dispersing are achieved. The apparatus has particular utility in wetting and dispersing dry particles which are difficult to solubilize, such as polymeric flocculating agents.
REFERENCES:
patent: R27681 (1973-06-01), Gaddis
patent: 3051454 (1962-08-01), Goos et al.
Cantor Alan
Christian Leonard D.
Clausen V. Dean
The Dow Chemical Company
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