US 5,821,184 A · Foamed glass article for preparing surfaces, use therefor, and method of making same

Abstract

A foamed glass article for preparing surfaces, the use therefor, and a method of making same are provided. The foamed glass article is in the form of a block, disk or similar product, and is used for preparing surfaces such as by sanding, rubbing and scraping the same to clean, abrade, polish, smooth, or the like such a surface. The foamed glass article is formed from a starting mixture that comprised waste glass, 0.10-20% by weight of a non-sulfur based foaming agent, and optionally an additional abrasive material. A mixture of powdered waste glass and non-sulfur based foaming agent can be placed in a mold and heated so that the mixture sinters and subsequently foams. Thereafter, the foamed mixture is annealed.

Claims15

Dependent claims

A method of making foamed glass as a means to treat a hard surface to remove material therefrom, said method comprising the steps of:

providing powdered waste glass;
mixing a non-sulfur based foaming agent and sand with said powdered waste glass to form a mixture;
placing said mixture onto a surface;
heating said mixture so that said mixture sinters and subsequently foams to form a foamed mixture;
and
annealing said foamed mixture by cooling it to room temperature to form a foamed glass product, wherein said heating step comprises first heating said mixture to a temperature of about 1250.degree. F., maintaining this temperature for a sufficient period of time to allow said mixture to sinter and absorb heat evenly, and then increasing said temperature to 1274.degree.-1700.degree. F.

3 more elements

Dependencies are inferred from the claim text.

Foamed glass article for preparing surfaces, use therefor, and method of making same

Life of this patent

Foamed glass article for preparing surfaces, use therefor, and method of making same

Life of this patent

Abstract

Claims15