Principles of technological design of wasteless chemical processes based on the use of wastes for production of alkaline slag cements and concretes
The strength characteristics of alkaline slag-cement made with the use of waste from alkaline sealing of metals are presented. The cement was prepared from granulated blast-furnance slag with average component contents in the following ranges (mass %): SiO/sub 2/ 36.0-40.2, Al/sub 2/O/sub 3/ 4-18.2, FeO 0.1-3.7, MnO 0.4-5.2, CaO 33.1-48.8, MgO 2.2-9.8. With the use of wastes from the descaling process in alkali melts for production of alkaline slag cements it is possible to obtain highly effective cements of type 700-900, which is 2 to 3 times the value for portland cements. Therefore, the use of wastes from alkaline descaling for production of alkaline slag cements is of great economic and conservational significance. It is possible to devise a wasteless process of scale removal from metals; this is an important advantage of the alkaline scaling method over acid pickling.
- OSTI ID:
- 6813826
- Journal Information:
- J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 57:12, PT. 1; ISSN JAPUA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BUILDING MATERIALS
CEMENTS
CHALCOGENIDES
CONCRETES
DESCALING
ELEMENTS
INDUSTRIAL WASTES
INDUSTRY
IRON COMPOUNDS
IRON OXIDES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MANAGEMENT
MANGANESE COMPOUNDS
MANGANESE OXIDES
MATERIALS
MATERIALS RECOVERY
METAL INDUSTRY
METALS
OXIDES
OXYGEN COMPOUNDS
PROCESSING
RECOVERY
SILICON COMPOUNDS
SILICON OXIDES
SURFACE FINISHING
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTES