Method for making glass beads

Details Method for making glass beads Method for making glass beads

1981-08-05

1983-05-31

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Self-supporting particle making

65142, C03B 1910

Patent

active

043859178

ABSTRACT:
A vortex combustion furnace (1) for the production of glass beads 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 to the chamber through tangential air inlets (16) and creates a vortex within the chamber. 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 injected into the chamber 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: 2619776 (1952-12-01), Potters
patent: 2976574 (1961-03-01), Keutgen et al.
patent: 3133805 (1964-05-01), Robinson
patent: 3138444 (1964-06-01), Searight et al.
patent: 3190737 (1965-06-01), Schmidt
patent: 3361549 (1968-01-01), Nakajima

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