Charles Heber Baldwin

US Patent:

62044303, Mar 20, 2001

Filed:

Feb 18, 1998

Appl. No.:

9/025657

Inventors:

Charles E. Baldwin - Golden CO
Alioune Sogue - Denver CO

Assignee:

Rocky Mountain Remediation Services LLC - Golden

International Classification:

A62D 300
G21E 900
E02D 312

US Classification:

588236

Abstract:

The current invention provides methods for stabilizing wastes, preparing construction materials and stabilizing soils using compositions including hexametaphosphate, with or without other additives. More particularly, one method of the invention discloses a process for treating a variety of materials including solid and liquid-containing wastes, including for example, common debris or hazardous, radioactive or toxic waste. This method involves combining a waste material with hexametaphosphate, and in some cases other additives. The resulting amended waste may also be compacted. Another method involves use of hexametaphosphate compositions to prepare construction materials. This method involves combining hexametaphosphate with a starting material such as soil, soil-containing compositions, mine tailings, mill tailings and combinations thereof. The resulting mixture is then compacted. The method yields a solid material in which the hexametaphosphate chemically and physically binds to soil constituents, thus yielding a hard product which exhibits high compressive strength and excellent durability.