Study of the properties of slag-alkali cements based on nickel slags
The authors report results of a study of the use of one slag from the production of nonferrous metals to obtain slag-alkali cements. The study was conducted on slag from a nickel plant. As the liquid component they used solutions of sodium metasilicate, an alkali-soda melt, and sodium silicate of different densities. Since the given slag has a considerable content of SiO/sub 2/ and Al/sub 2/O/sub 3/, its structure contains siloxane (-O-Si-O-Si-O-) and alumooxane (-O-Al-O-) bonds. Thus, the hydration of such glass is determined by the rupture of these bonds as a result of the polarizing action of OH/sup -/ ions, and the characteristics of the cement stone are determined by the type and concentration of the alkali component. The study showed that it is possible to obtain high-strength cements based on nickel slags in combination with different alkaline components. Meanwhile, the activity of the cements can be increased by introducing certain additions such as Portland cement clinker and granulated blast-furnace slag. The use of soluble silicate salts as the liquid component is more promising, these salts producing an alkaline medium in solution. Hydrothermal processing is the best hardening regime.
- OSTI ID:
- 6123401
- Journal Information:
- J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 59:4; ISSN JAPUA
- Country of Publication:
- United States
- Language:
- English
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320305* -- Energy Conservation
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36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360603 -- Materials-- Properties
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANIONS
BUILDING MATERIALS
CEMENTS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL COMPOSITION
CRYSTAL STRUCTURE
DISPERSIONS
ELEMENTS
GLASS
HARDENING
HYDRATION
HYDROGEN COMPOUNDS
HYDROXIDES
INFRARED SPECTRA
IONS
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
MIXTURES
NICKEL
OXIDES
OXYGEN COMPOUNDS
PROCESS SOLUTIONS
PROCESSING
RECOVERY
SILICATES
SILICON COMPOUNDS
SLAGS
SODIUM COMPOUNDS
SODIUM SILICATES
SOLUTIONS
SOLVATION
SPECTRA
SYNTHESIS
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION