Method of making building blocks from coal combustion waste and related products
US6068803A · kind A · utility
14Cited by
18References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1998 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Feb 18, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/19
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of making a building block from waste particulate siliceous materials, such as fly ash, bottom ash, and rock mineral fines, includes employing a major amount of such waste particulate materials in combination with a calciferous additive and water to cure and shape the same under the influence of controlled pressure and temperature for a predetermined time to create building block which is characterized by a mineralogical crystalline phase. Preferred ratios of fine waste particulate material and coarser waste particulate materials are disclosed. The product produced by the method is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.