Coal fly ash: a potential resource for aluminium and titanium

Conference · Tue Jan 01 04:00:00 EST 1980

OSTI ID:6670600

Frederick, J R; Murtha, M J; Burnet, G

Two processes are described which utilize fly ash as a source of metals and by-products. The lime-soda sinter process involves sintering of the fly ash and alkaline oxides at 1100-1300/sup 0/C to break the alumina-silica bonds and form soluble aluminate compounds and insoluble calcium silicates. The aluminates are extracted from the sinter by dissolution in sodium carbonate. The calcium silicate sinter extract shows promise as a raw material for the manufacture of portland cement. The HiChlor process uses high temperature chlorination of fly ash in the presence of a reductant to form volatile metal chlorides of aluminium, titanium, iron, and silicon. The HiChlor process extracts aluminium, titanium, and iron, while the sinter process extracts only aluminium.

• Research Organization: Ames Lab., IA (USA); Iowa State Univ. of Science and Technology, Ames (USA). Dept. of Chemical Engineering
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6670600
• Report Number(s): IS-M-298; CONF-800814-32
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
AEROSOL WASTES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM
BUILDING MATERIALS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CEMENTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHLORINATION
CONCENTRATORS
COST
DIAGRAMS
ECONOMIC ANALYSIS
ECONOMICS
ELEMENTS
ENERGY FACILITIES
FABRICATION
FLOWSHEETS
FLY ASH
HALOGENATION
HICHLOR PROCESS
HIGH TEMPERATURE
INDUSTRIAL PLANTS
IRON
LIME-SODA SINTER PROCESS
MAGNETIC SEPARATORS
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
METALS
OXYGEN COMPOUNDS
PROCESSING
RECOVERY
RESOURCE RECOVERY FACILITIES
SINTERING
SODIUM CARBONATES
SODIUM COMPOUNDS
TITANIUM
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PROCESSING PLANTS
WASTES