Abstract
The technological properties of quartz sand (without and after enrichment) by methods of emission spectral analysis, petrography, and X-ray phase analysis are investigated. The studied sand is a waste after extraction of titanium-containing components from raw materials. It is shown that the enrichment of quartz sand expands the field of its application. It has been established that quartz sand can be used as a filler of heavy, light, fine-grained, cellular and silicate concrete, mortar, and the preparation of dry construction mixtures. Also, sand can be claimed as a raw material component to produce ceramic tiles, porcelain stoneware, glazed ceramic products, wall ceramics, as well as proppants. Hydraulic enrichment leads to a decrease in the content of clay particles in the sand, which allows it to be used also for the construction of bases and coatings of roads and airfields. The integrated use of raw materials and waste allows solving the problem of creating non-waste and environmentally friendly technologies, which ensures the saving of natural raw materials, and on the other hand, allows it to be disposed of, improving the environmental situation.
Highlights
The quality of quartz sand used in various fields of industry is regulated by notations in accordance with the technical specifications
As a rule, are inferior in quality to sand enriched by the hydraulic method, especially on sands of complex mineral composition and sands with a high clay content
Fine quartz sands are used, as a rule, in concrete production as a filler, in mortar production, in the production of ceramic materials as a non-shrinkage component, in the production of molding sands. The aim of this project is to determine the application of quartz sand in its natural form and to consider the effect of enrichment on the properties and applications
Summary
The quality of quartz sand used in various fields of industry is regulated by notations in accordance with the technical specifications. These requirements and quartz sand properties determine the technology and the necessity of enrichment. The final cost of the sand is determined by the method and degree of enrichment. The enrichment of sand from clay impurities can be carried out by the dry method (air classification) or by the wet method (the hydraulic one). As a rule, are inferior in quality to sand enriched by the hydraulic method, especially on sands of complex mineral composition and sands with a high clay content
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