Patent ID: 6045913
Filing Date: 2000-04-04
Classification: B01J,C03B,C03C,Y02P,Y10T

Abstract:
A composition of matter comprising solid particles,A. at least a portion of said solid particles being substantially glassy, generally ellipsoidal particles;B. at least a portion of said solid particles being substantially glassy, generally ellipsoidal product particles respectively having1. chemical composition(s) corresponding substantially with that of at least one substance in one of the following categoriesa. clay,b. talc,c. hydrate of aluminum oxide,d. water-containing oxide of metal(s) selected from among iron, zinc, boron or zirconium; and/ore. hydrated silicate containing 1 to 25% by weight of dissolved or combined water selected from among asbestos, glauconite, meershaum, mica, pyrophillite, sepiolite, vermiculite and zeolite,said product particles, as compared to materials in categories a.-e. above, exhibiting a reduced content of any components of said materials that are volatile under conditions of fusion of such particles, and2. lower specific gravity that is at least 1% lower than that of material obtained by post-production remelting of product particles and solidifying the remelted material; andC. said composition of matter comprising about 15 to 100% by volume of substantially glassy, generally ellipsoidal at least partially fused solid product particles that have said chemical composition(s) and said lower specific gravity, based on the total volume of solid particles present in said composition of matter.