Production of glass microspheres

Details Production of glass microspheres Production of glass microspheres

1987-03-02

1988-10-18

Lindsay, Robert L.

Glass manufacturing

Processes

Self-supporting particle making

65 22, 65142, C03B 1908, C03B 1910, C03B 4002

Patent

active

047785020

ABSTRACT:
Processes and apparatus for the production of hollow microspheres by thermal expansion of glass particles including the thermal treatment of extremely small glass particles whose dimensions are less than 50 micrometers and, preferably, less than 35 micrometers or even 20 micrometers, which include a fluidizing agent. This technique makes possible the production of extremely small glass microspheres under satisfactory yield conditions. Also, the hollow microsphere products produced by these processes and apparatus.

REFERENCES:
patent: 2911669 (1959-11-01), Beckwith
patent: 3365315 (1968-01-01), Beck
patent: 3838998 (1974-10-01), Matthews et al.
patent: 4017290 (1977-04-01), Budrick et al.
patent: 4059423 (1977-11-01), DeVos et al.
patent: 4391646 (1983-07-01), Howell
patent: 4459145 (1984-07-01), Elsholz
patent: 4475936 (1984-10-01), Aston et al.
Chopinet et al., Factors Determining the Residual Sulfate Content of Glass; Glasstechniche Berichte, vol. 56, pp. 596-601 (1983).
Glass Microbaloon Particles for Construction Materials Alford Ceramic Age, Apr. 1962, pp. 55, 56, & 58.

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