Washery wastes as a source of raw materials for ceramic products
The rapid expansion of the output of walling products and the exhaustion of raw material sources for brickmaking have brought to the fore the urgency of devising methods of utilizing coal-mining wastes in the production of rough ceramics, i.e., ceramic walling products, and sewage pipes. The method developed in the VNIIstrom Institute for the production of walling products from washery wastes has now been approved by the Joint Authorities Commission and recommended for commercial exploitation. However, these wastes can only be used (like the traditional clay materials) provided they are uniform in composition and properties. Significant variations lead to a lower product quality and reduced cost effectiveness. The composition and properties of washery wastes vary to an extent which depends on the composition variations in the rock over- and under-lying the coal seam, the proportions of rock included in the mined product, the production rhythm in the washery and the labor organizations at the mining, transportation, and cleaning stages. A survey of the variations in composition of the rocks over- and under-lying coal seams in the Donbas has shown that the average ashes are 88% above and 83% below the seam; the variability coefficients are comparatively low (13 and 16.3%, respectively). Correspondingly, the long-term average variability of the ash of the tailings from half the washeries is below 15%. The construction of modern washeries attached to the large pits will further reduce the variability in the ash of the washery wastes. We took samples from No. 1 and No. 2 washeries at the Cherevopets I and SW to investigate the variability of the tailings composition and properties.
- OSTI ID:
- 6639833
- Journal Information:
- Coke Chem. USSR (Engl. Transl.); (United States), Journal Name: Coke Chem. USSR (Engl. Transl.); (United States) Vol. 8; ISSN COKCA
- Country of Publication:
- United States
- Language:
- English
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013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
ASIA
BRICKS
BUILDING MATERIALS
CHEMICAL COMPOSITION
COAL PREPARATION PLANTS
DATA
EASTERN EUROPE
EUROPE
EXPERIMENTAL DATA
INDUSTRIAL PLANTS
INFORMATION
MATERIALS
MINERAL WASTES
NUMERICAL DATA
SOLID WASTES
USSR
VARIATIONS
WASTE PRODUCT UTILIZATION
WASTES