Compositions comprising fused particulates and methods of making

Details Compositions comprising fused particulates and methods of making Compositions comprising fused particulates and methods of making

1995-05-31

1996-09-24

Szekely, Peter A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524444, 524450, 524456, C08K 334, C08K 718

Patent

active

055591701

ABSTRACT:
The disclosure describes a method for producing bulk, particulate material that includes solid, generally ellipsoidal particles by dispersing irregularly shaped feed particles including about 60 to 100% by weight of at least one silicate-containing material selected from among wollastonite, alkali feldspar, plagioclase feldspar and nepheline. While maintaining the feed particles in dispersion, they are heated sufficiently to bring about at least partial fusion within at least the surfaces of the particles. This produces a bulk particulate product of which about 15 to 100% by volume is generally ellipsoidal particles. Also described are compositions of matter including solid particles, at least a portion of which are substantially glassy and generally ellipsoidal. At least a portion of these particles have been respectively formed from feed particles composed substantially of at least one silicate selected from among wollastonite, alkali feldspar, plagioclase feldspar and nepheline. The bulk particulate compositions contain about 15 to 100% by volume of the substantially glassy, generally ellipsoidal particles that are byproducts of at least partial fusion of such feed particles.

REFERENCES:
patent: 3773707 (1973-11-01), Hermann
patent: 4267089 (1981-05-01), Brown
patent: 4994506 (1991-02-01), Anton et al.
patent: 5326806 (1994-07-01), Yokoshima et al.
Protasova et al., "Use of Local Raw Material in the Glass Industry", Glass and Ceramics, vol. 50, No. 7, pp. 342-344, Jul. 1993, New York, N.Y.
Budov et al., "Glass Microbeads, Application, Properties, and Technology", Glass and Ceramics, vol. 50, No. 7, pp. 275-279, Jul. 1993, New York, N.Y.

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