High efficiency refractoryless kettle

Details High efficiency refractoryless kettle High efficiency refractoryless kettle

2007-02-13

2007-02-13

Wilson, Gregory (Department: 3749)

Heating

Processes of heating or heater operation

Including passing, treating or conveying gas into or through...

C106S722000, C106S772000

Reexamination Certificate

active

10788871

ABSTRACT:
An apparatus for calcining gypsum including a housing having a bottom wall, open top, and a plurality of side walls extending therebetween. A fixture is located adjacent the open top for receiving gypsum from a source and transferring the gypsum into the housing. At least one burner is connected to the housing and operable for combusting an air-fuel mixture to heat the gypsum. At least one serpentine burner conduit extends from the burner through the housing and terminates through a support floor of the apparatus. The exhaust flow is then directed through a fluidization pad and into the gypsum to further heat the gypsum product. An agitation mechanism is operable to mix the gypsum adjacent the fluidization pad to prevent pockets of gypsum from coagulating and preventing fluidization of the gypsum.

REFERENCES:
patent: 2261872 (1941-11-01), Choate
patent: 3236509 (1966-02-01), Blair
patent: 3307840 (1967-03-01), Conroy, Jr.
patent: 3307915 (1967-03-01), Conroy et al.
patent: 3378246 (1968-04-01), Leding
patent: 3576599 (1971-04-01), Anderson et al.
patent: 3669435 (1972-06-01), Silverberg
patent: 3871829 (1975-03-01), Keith et al.
patent: 3901645 (1975-08-01), Rowland
patent: 4113836 (1978-09-01), O'Connor
patent: 4117070 (1978-09-01), O'Neill
patent: 4161390 (1979-07-01), Page et al.
patent: 4176157 (1979-11-01), George et al.
patent: 4188186 (1980-02-01), Ladwig
patent: 4215981 (1980-08-01), von Dreusche, Jr.
patent: 4227873 (1980-10-01), Manshausen et al.
patent: 4238238 (1980-12-01), Kinkade et al.
patent: 4522587 (1985-06-01), Miller
patent: 4576573 (1986-03-01), Ruehenbeck
patent: 4626199 (1986-12-01), Bounini
patent: 4629419 (1986-12-01), Ward et al.
patent: 4744961 (1988-05-01), Bounini
patent: 4744963 (1988-05-01), Dozsa et al.
patent: 4915623 (1990-04-01), Ball et al.
patent: 5007825 (1991-04-01), Williams
patent: 5011668 (1991-04-01), Ball et al.
patent: 5139749 (1992-08-01), White
patent: 5333597 (1994-08-01), Kirkpatrick et al.
patent: 5743728 (1998-04-01), Cloud et al.
patent: 5743954 (1998-04-01), Rowland et al.
patent: 5927968 (1999-07-01), Rowland et al.
patent: 5954497 (1999-09-01), Cloud et al.
patent: 169737 (1906-04-01), None
patent: 1558080 (1970-01-01), None
patent: 1018464 (1966-01-01), None
patent: 1087549 (1967-10-01), None
patent: 1198807 (1970-07-01), None
patent: 1488665 (1977-10-01), None
patent: 2043219 (1980-10-01), None
Page from Babcock-BSH catalog showing rotary drum calciners with coolers. Germay. Such rotary calciners were first used in 1925.
Page from Krupp Polysius catalog showing POLCAL calcining system. Netherlands. One such calcining system was in use starting in 1993.
British Gypsum Limited, “High Efficiency Calcining of Gypsum”, 1998, pp. 1-8.

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