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Title: Preparation of reactive beta-dicalcium silicate

Abstract

This invention relates to the preparation of fine particles of reactive beta-dicalcium silicate by means of a solid state process which comprises firing a mixture of calcium sulfate, silica, and a reducing additive selected from the group consisting of calcium sulfide, carbon, carbon monoxide, methane, and hydrogen, at a temperature of about 850 to 1000/sup 0/C. A carrier gas such as nitrogen or carbon dioxide may also be added, if desired. A high concentration of sulfur dioxide is a by-product of this process.

Inventors:
; ;
Issue Date:
OSTI Identifier:
6840516
Assignee:
Dept. of Energy
DOE Contract Number:  
EY-76-C-02-0016
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; CALCIUM SILICATES; CHEMICAL PREPARATION; FLUE GAS; DESULFURIZATION; POLLUTION CONTROL EQUIPMENT; MATERIALS; BY-PRODUCTS; CALCIUM SULFATES; CALCIUM SULFIDES; CARBON; CARBON DIOXIDE; CARBON MONOXIDE; HYDROGEN; METHANE; NITROGEN; PARTICLES; REACTIVITY; SILICA; SORPTION; ALKALINE EARTH METAL COMPOUNDS; ALKANES; CALCIUM COMPOUNDS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; EQUIPMENT; GASEOUS WASTES; HYDROCARBONS; MINERALS; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SILICATES; SILICON COMPOUNDS; SILICON OXIDES; SULFATES; SULFIDES; SULFUR COMPOUNDS; SYNTHESIS; WASTES; 424000* - Engineering- Pollution Control Equipment- (1980-1989)

Citation Formats

Shen, M S, Chen, J M, and Yang, R T. Preparation of reactive beta-dicalcium silicate. United States: N. p., 1980. Web.
Shen, M S, Chen, J M, & Yang, R T. Preparation of reactive beta-dicalcium silicate. United States.
Shen, M S, Chen, J M, and Yang, R T. Thu . "Preparation of reactive beta-dicalcium silicate". United States.
@article{osti_6840516,
title = {Preparation of reactive beta-dicalcium silicate},
author = {Shen, M S and Chen, J M and Yang, R T},
abstractNote = {This invention relates to the preparation of fine particles of reactive beta-dicalcium silicate by means of a solid state process which comprises firing a mixture of calcium sulfate, silica, and a reducing additive selected from the group consisting of calcium sulfide, carbon, carbon monoxide, methane, and hydrogen, at a temperature of about 850 to 1000/sup 0/C. A carrier gas such as nitrogen or carbon dioxide may also be added, if desired. A high concentration of sulfur dioxide is a by-product of this process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {2}
}