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Primary Examiner: Halper, Robert
Assistant Examiner:
Attorney: Christie, Parker & Hale

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Title: Glass recovery

Abstract: A process is disclosed for recovering purified glass from solid waste which includes a predominantly organic fraction and a predominantly inorganic fraction both of which contain glass particles. The predominantly inorganic fraction is further subdivided into a glass-rich fraction containing glass, inorganic, and organic constituents. The organic constituents are initially separated from the glass-rich fraction. The organics-free fraction is comminuted and screened to remove coarse particles greater than a first predetermined mesh size. The residue is classified to remove fine particles less than a second mesh size. The resultant mixture, after removal of coarse and fine particles, is subjected to froth flotation to form a float containing predominantly glass which is recovered for further use.

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Inventors: Morey, Booker W. (Pasadena, CA, US)

Application Number: 603868
Filing Date: 1975-08-11
Publication_date: 1978-01-24
Assignee: Occidental Petroleum Corporation (Los Angeles, CA)
Primary Class(es): 241/20 65/134.8, 209/3, 209/17, 209/166, 241/24.22, 241/DIG38
Other Classes:
US Patent Ref:

565577	Aug, 1896	Stanley	209/12.
2307059	Jan, 1943	Moore	209/2.
2990958	Jul, 1961	Green	209/166.
3145163	Aug, 1964	Dancey	209/12.
3424308	Nov, 1969	Fensky	209/12.
3650396	Mar, 1972	Gillespie	209/12.
3720380	Mar, 1973	Marsh	241/24.
3725538	Apr, 1973	Brewer	209/12.
3736111	May, 1973	Gardner	241/DIG.
3817458	Jun, 1974	Gilberto	241/24.
3897215	Jul, 1975	Davidson	209/12.
3945575	Mar, 1976	Marsh	241/20.

Other Refs: Other References: Proceedings of the Third Min. Waste Util. Symposium, Mar. 1972, 311-321, Morey and Cummings.