Process for manufacture of macroporous microspheroids

Details Process for manufacture of macroporous microspheroids Process for manufacture of macroporous microspheroids

1977-08-22

1978-08-08

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65 21, 55 67, 55386, 210 31C, 210198C, 252317, 252454, 264 60, 264122, C03C 1700

Patent

active

041054261

ABSTRACT:
Disclosed herein is a powder of discrete, macroporous, microspheroids, each having an average diameter in the range of 2 to 50 microns and each composed of a plurality of large colloidal particles joined and cemented together at their points of contact by 1 to 10% by weight of non-porous, amorphous silica. These microspheroids have a high degree of mechanical stability and a surface area between about 80 and 110% of that of the large colloidal particles. Also disclosed is a process for the manufacture of this powder.

REFERENCES:
patent: 3274888 (1966-09-01), Vanstrum et al.
patent: 3328230 (1967-06-01), Levecque et al.
patent: 3420644 (1969-01-01), Lirones
patent: 3505785 (1970-04-01), Kirkland
patent: 3635824 (1975-05-01), Hedgesson et al.
patent: 3758284 (1973-09-01), Haller
patent: 3782075 (1974-01-01), Kirkland
patent: 3855172 (1974-12-01), Iler et al.
patent: 3875282 (1975-04-01), Steinreich
patent: 3920578 (1975-11-01), Yates
patent: 3988405 (1976-10-01), Smith et al.

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