Apparatus for the processing of foundry sands

Metal founding – Miscellaneous – apparatus

Patent

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164 5, B22C 500, B22C 510

Patent

active

054779090

ABSTRACT:
A mold sand is regenerated with or without mixing with new sand and followed by the addition of binder to it by fluidizing the sand in a chamber as it passes from an inlet to an outlet which can be a step or downcomer opening into the mixer. Compressed air is forced from below through the sand and entrains away small particles while coarse particles or heavy pieces are collected in a discharge unit which can be opened from time to time to carry away the coarse materials.

REFERENCES:
patent: 5045090 (1991-09-01), Pohl
patent: 5251684 (1993-10-01), Andrews et al.
patent: 5279741 (1994-01-01), Schott

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