Method and apparatus for separating out gall during glass meltin

Details Method and apparatus for separating out gall during glass meltin Method and apparatus for separating out gall during glass meltin

1995-12-18

1997-11-04

Czaja, Donald E.

Glass manufacturing

Processes

Fining or homogenizing molten glass

651348, 65327, 65347, 588254, 588256, 588900, C03C 5193

Patent

active

056834845

ABSTRACT:
An electrically heated tank furnace is used to melt glass whereby a floating gall layer is formed on the melt, in particular during the vitrification of hazardous materials such as asbestos, fly ash, filter dust, whereby the tank of the furnace is fitted with a discharge outlet for the melt and an overflow channel with an inlet for the gall. A stream of ascending gas bubbles is produced in the melt. In order to promote better and automatic draining of the gall the stream of gas bubbles is produced directly in front of the overflow channel which thereby maintains a layer of liquid gall in the overflow channel and a layer of molten glass retained by a weir on the bottom of the overflow channel. The temperature in the overflow channel is chosen to be above the melting temperature of the gall, whilst the bottom layer of glass is maintained at a temperature at which the viscosity of the glass is so high that the glass does not drain out the overflow channel.

REFERENCES:
patent: 3208841 (1965-09-01), Burch
patent: 3294512 (1966-12-01), Penberthy
patent: 3362808 (1968-01-01), Lyle
patent: 3375095 (1968-03-01), Poole
patent: 3385688 (1968-05-01), Plumat et al.
patent: 3482956 (1969-12-01), Trethewey
patent: 3573019 (1971-03-01), Rees
patent: 3592151 (1971-07-01), Webber
patent: 4019888 (1977-04-01), Verhappen et al.
patent: 4852118 (1989-07-01), Pieper
patent: 4882736 (1989-11-01), Piper
patent: 4944785 (1990-07-01), Sorg et al.
patent: 4948411 (1990-08-01), Pieper et al.
patent: 5032161 (1991-07-01), Pieper et al.
patent: 5035735 (1991-07-01), Pieper et al.
patent: 5120342 (1992-06-01), Richards
patent: 5188649 (1993-02-01), Macedo et al.
patent: 5340372 (1994-08-01), Macedo et al.
patent: 5364426 (1994-11-01), Richards
Publication by Von G. Mayer-Schwinning, et al, entitled "Vitrification Process for the inertization of residual Products During Noxious Gas Removal in Termal Waste Disposal Units", VGB Kraftwerkstechnik 70 (1990) Issue 4, pp. 332-336.
Publication by L. Penberty-Fred scarfe entitled "Electric Boosting and Bubbling for Glass Furnaces" date unknown.
Publication by Pircus entitled "Melting Furnace Design in the Glass Industry" published by Books for Industry and the Glass Industry Magazine, dated 1980.
Dr-Ing Hans-Joachin Illig, ABC Glas, Deutscher Verlag fur Grundstoffindustrie Leipzig, 1991--pp. 7, 98.

Affiliated with

Also associated with

Rating

Method and apparatus for separating out gall during glass meltin 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 and apparatus for separating out gall during glass meltin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for separating out gall during glass meltin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1829482