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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.degree.-1000.degree. 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:
 [1];  [2];  [3]
  1. (Laramie, WY, NJ)
  2. (Rahway, NJ)
  3. (Amherst, NY)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY
OSTI Identifier:
864130
Patent Number(s):
US 4314980
Assignee:
United States of America as represented by United States (Washington, DC) BNL
DOE Contract Number:  
EY-76-C-02-0016
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
preparation; reactive; beta-dicalcium; silicate; relates; fine; particles; means; solid; process; comprises; firing; mixture; calcium; sulfate; silica; reducing; additive; selected; consisting; sulfide; carbon; monoxide; methane; hydrogen; temperature; 850; degree; -1000; carrier; gas; nitrogen; dioxide; added; desired; concentration; sulfur; by-product; additive selected; fine particles; carrier gas; carbon dioxide; carbon monoxide; sulfur dioxide; calcium sulfate; calcium sulfide; fine particle; reactive beta-dicalcium; calcium silicate; beta-dicalcium silicate; /423/

Citation Formats

Shen, Ming-Shing, Chen, James M., and Yang, Ralph T.. Preparation of reactive beta-dicalcium silicate. United States: N. p., 1982. Web.
Shen, Ming-Shing, Chen, James M., & Yang, Ralph T.. Preparation of reactive beta-dicalcium silicate. United States.
Shen, Ming-Shing, Chen, James M., and Yang, Ralph T.. Fri . "Preparation of reactive beta-dicalcium silicate". United States. https://www.osti.gov/servlets/purl/864130.
@article{osti_864130,
title = {Preparation of reactive beta-dicalcium silicate},
author = {Shen, Ming-Shing and Chen, James M. and Yang, Ralph 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.degree.-1000.degree. 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 = {1982},
month = {1}
}

Patent:

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