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Title: Process of producing hydraulic cement from fly ash

Abstract

A hydraulic cement is prepared by reacting coal fly ash with concentrated phosphoric acid, and crushing or grinding the resulting mixture to granules or a fine powder. The reacted fly ash may be heated to reduce the water of hydration before final crushing or grinding. The resulting hydraulic cement may be mixed with sand and/or gravel aggregate to prepare mortar or concrete mixes for applications similar to portland cement, or the fly ash cement may be mixed with soils to stabilize them.

Inventors:
; ;
Publication Date:
OSTI Identifier:
5244951
Patent Number(s):
US 4328037
Assignee:
Iowa State University Res Foundation Inc
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 29 Dec 1980; Other Information: PAT-APPL-220993
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 36 MATERIALS SCIENCE; CEMENTS; PRODUCTION; USES; COAL; FLUE GAS; FLY ASH; HYDRAULICS; PHOSPHORIC ACID; PORTLAND CEMENT; SOILS; STABILIZATION; AEROSOL WASTES; ASHES; BUILDING MATERIALS; CARBONACEOUS MATERIALS; ENERGY SOURCES; FLUID MECHANICS; FOSSIL FUELS; FUELS; GASEOUS WASTES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; MATERIALS; MECHANICS; RESIDUES; WASTES; 010800* - Coal, Lignite, & Peat- Waste Management; 360601 - Other Materials- Preparation & Manufacture

Citation Formats

Boybay, M, Demirel, T, and Lee, D. Process of producing hydraulic cement from fly ash. United States: N. p., 1982. Web.
Boybay, M, Demirel, T, & Lee, D. Process of producing hydraulic cement from fly ash. United States.
Boybay, M, Demirel, T, and Lee, D. 1982. "Process of producing hydraulic cement from fly ash". United States.
@article{osti_5244951,
title = {Process of producing hydraulic cement from fly ash},
author = {Boybay, M and Demirel, T and Lee, D},
abstractNote = {A hydraulic cement is prepared by reacting coal fly ash with concentrated phosphoric acid, and crushing or grinding the resulting mixture to granules or a fine powder. The reacted fly ash may be heated to reduce the water of hydration before final crushing or grinding. The resulting hydraulic cement may be mixed with sand and/or gravel aggregate to prepare mortar or concrete mixes for applications similar to portland cement, or the fly ash cement may be mixed with soils to stabilize them.},
doi = {},
url = {https://www.osti.gov/biblio/5244951}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {5}
}