Method of regenerating used foundry sands

Details Method of regenerating used foundry sands Method of regenerating used foundry sands

1992-02-21

1993-11-09

Batten, Jr., J. Reed

Metal founding

Process

Including recycling of process material

241DIG10, B22D 2900, B22C 500

Patent

active

052594343

ABSTRACT:
In a method of regenerating feed material of coated grains with an irregular surface, in particular used foundry sands coated with a casing of binder or the like, the casing is opened up by friction, wherein the sand to be regenerated is brought into rubbing contact with a granular scouring agent, the grain size of which is substantially smaller than that of the sand.

REFERENCES:
patent: 3646987 (1972-03-01), Schumacher
patent: 3738415 (1973-06-01), Planten
patent: 3857201 (1974-12-01), Jacob

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