Preparation of reactive beta-dicalcium silicate

Patent · Thu Feb 28 00:00:00 EST 1980

OSTI ID:6840516

Shen, M S; Chen, J M; Yang, R T

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.

• DOE Contract Number: EY-76-C-02-0016
• Assignee: Dept. of Energy
• OSTI ID: 6840516
• Country of Publication: United States
• Language: English

Related Subjects

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)