Environmentally stable product, reactive cast product, and mixed cement

摘要

"ENVIRONMENTALLY STABLE PRODUCT, REACTIVE CAST PRODUCT, AND MIXED CEMENT". This invention relates to the remediation and thermo-chemical decontamination of sediments and soils contaminated with organic contaminants in addition to inorganic materials with the subsequent beneficial reuse. New, environmentally stable products of commercial value are produced when certain additives such as calcium and oxides and metal are mixed with contaminated materials. In the process, the mixture is heated to 1150 ° C ~ 1500 ° to produce a reaction product melted with at least part of an excessive amount of oxygen or air mixture being continuously bubbled through the melted material in order to provide the mixture and reach the destruction and high thermal removal of the efficiencies of organic contaminants. The molten material is then quickly cooled in moist air, steam or water to prevent the amorphous material from becoming crystals. Inorganic contaminants such as chromium, nickel, zinc, etc. are incorporated and completely immobilized within the amorphous silicate network. The atmospheric emissions resulting from this process are non-toxic and capable of meeting the specified current health and environmental requirements. The amorphous material can be sprayed to yield a powder that proves the cement properties by reacting with the alkaline solution or by mixing it with other materials to produce mixed cements. The compressive strengths of concretes made from the powder of the invention and its mixtures are comparable to, or higher than, the ASTM requirements for general purpose concrete applications. The powder of the invention, the mixed cements, and the mortar / concrete derived from it also easily pass the TCLP leaching tests to achieve environmental acceptance.