Patent · US Expired

Method of making a building material

US4501618A · kind A · utility

23Cited by

5References

8Claims

0Family size

Assignee

Rheinisch-Westfalisches Elektrizitatswerk Aktiengesellschaft · DE

Inventors

Georg R. U. Gebhard · Bergneustadt, DE
Klaus Hein · Gedern, DE

Key dates

Filing date	Aug 26, 1983
Grant date	Feb 26, 1985
Priority date	—
Expiry date	Aug 26, 2003

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S106/01
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A building material consists essentially of an aqueous slurry of a dry residue obtained by treating a flue gas containing fly ash from a fossil fuel combustion chamber with a finely divided absorbent consisting at least primarily of calcium oxide, calcium hydroxide and calcium carbonate to permit reaction between the absorbent and sulfur dioxide in the flue gas, and dry separation of the reacted absorbent from the residual flue gas.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.