Glass manufacturing – Particulate bead or ball making apparatus
Patent
1983-02-10
1984-10-09
Lindsay, Robert
Glass manufacturing
Particulate bead or ball making apparatus
65 213, C03B 1910
Patent
active
044759363
ABSTRACT:
A vortex combustion furnace (1) for the production of glass beads or the like is generally cylindrical and has an outlet flue (24) at its upper end. A burner (13) at the lower end burns a gas/air mixture. Secondary air is introduced into the chamber through tangential air inlets (16) and creates a vortex (71) within the chamber. Tertiary air is introduced through a ring of angled nozzles (71) surrounding the burner further to swirl the flame. The vortex has a top-hat temperature profile with a central heating region with a temperature in excess of 1000.degree. C. and a surrounding cooling region with a temperature not much above ambient. Glass cullet is supplied to a fluidized bed (53) and then entrained in a pipe (44) to be injected into the chamber. The cullet follows a spiral path in the vortex, is heated, melts to form glass beads, is then cooled and finally is collected after striking the wall of the chamber.
REFERENCES:
patent: 2838881 (1958-06-01), Plumat
patent: 2978339 (1961-04-01), Veatch et al.
patent: 3133805 (1964-05-01), Robinson
patent: 3138444 (1964-06-01), Searight et al.
patent: 3151965 (1964-10-01), Patterson
patent: 3230064 (1966-01-01), Veatch et al.
patent: 4385917 (1983-05-01), Aston et al.
Aston Geoffrey W.
Smart Roderick M.
Lindsay Robert
Redland Technology Limited
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