Solid material comminution or disintegration – Processes – With heating or cooling of material
Patent
1987-01-30
1987-12-01
Rosenbaum, Mark
Solid material comminution or disintegration
Processes
With heating or cooling of material
164 5, 241 24, 241DIG10, B02C 1912
Patent
active
047098627
ABSTRACT:
A method for reclaiming green sands having a wide range of moisture and temperature conditions involves processing such sands in a single reclaimer unit to produce free flowing reclaimed sand adapted to pass through a 20 mesh screen and having a temperature preferably no greater than about 120.degree. F. The method involves effecting attrition of a batch of molding sand supplied to the reclaimer unit, applying a vacuum exhaust to the unit primarily to remove a calcined clay binder and water vapor therefrom, sensing the means temperature of the sand, and selectively adding moisture or heat to the sand as required to produce reclaimed sand having predetermined moisture and temperature conditions allowing such sand to be immediately screened of extraneous materials and passed to a mulling device or remixer. The rate of addition of moisture, if any, and the flow of exhaust air through the unit are controlled in order to prevent condensation in the exhaust conduit and dust collection devices.
REFERENCES:
patent: 1205323 (1916-11-01), Cady
patent: 2309036 (1943-01-01), Beardsley
patent: 2456769 (1948-12-01), Christensen et al.
patent: 2478461 (1949-08-01), Connolly
patent: 2515194 (1950-07-01), Christensen
patent: 2863191 (1958-12-01), Dietert et al.
patent: 3312403 (1967-04-01), Zifferer
patent: 3871438 (1975-03-01), Vissers et al.
D. Lawson and D. S. Leidel, Reclaimed Shakeout Sand as New Sand Substitute in Green Sand Molding Lines, AFS Transactions 84-28.
LandOfFree
Method of reclaiming green sand does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of reclaiming green sand, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of reclaiming green sand will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1926485