Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1984-03-21
1985-09-10
Bashore, S. Leon
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
162 6, 162 21, 162 22, 71 6403, 71 6404, 134 17, 164132, 241 2, D21B 132, D21B 136
Patent
active
045404674
ABSTRACT:
A method and apparatus for the removal of mold core material from metal castings and for fragmentation of municipal waste material, e.g., paper products, involves heating and hydrating the materials within a pressure vessel. Chemicals active on the material to be processed or the hydration water are added during hydration to soften the material to be removed or fragmented. Excess liquid in the vessel is drained and pressurized steam is added for a selected period of time. A suitable temperature and pressure are achieved such that the moisture or liquid carried by the processed material will rapidly turn to steam or vapor when the pressure in the vessel is rapidly reduced by quickly opening an unloading means at the bottom of the pressure vessel. The sudden release of the pressure in the vessel causes the moisture to change to steam and a certain portion of the liquid in the material to flash to vapor in accordance with thermodynamic laws. The resulting rapid expansion within the processed material fragments it.
REFERENCES:
patent: 2502337 (1950-03-01), Moir
patent: 2597896 (1952-05-01), Oster
patent: 2666001 (1954-01-01), Marshall
patent: 3015589 (1962-01-01), Everson et al.
patent: 3563711 (1971-02-01), Hammond et al.
patent: 3939066 (1976-02-01), Bauer
patent: 4073662 (1978-02-01), Borom
patent: 4235707 (1980-11-01), Burke, Jr.
Condensed Chemical Dictionary, 8th Edition, Hawley, 1974, p. 903.
Heuer, J. H., "Deinking Waste Papers with Sodium Peroxide", Paper Trade Journal, 1948.
Grube Kenneth E.
Harrington James V.
Harrington Vincent E.
Bashore S. Leon
Hastings K. M.
LandOfFree
Method for fragmenting municipal solid wastes 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 for fragmenting municipal solid wastes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for fragmenting municipal solid wastes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1427220