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ISSN: 2524-0714

Please use this identifier to cite or link to this item: http://elar.tsatu.edu.ua/handle/123456789/7760
Title: Refractory Materials Manufacturing Based on Sewage Sludge
Authors: Chernyshova, Liudmyla
Чернишова, Людмила Миколаївна
Чернышова, Людмила Николаевна
Kiurchev, Serhii
Кюрчев, Сергій Володимирович
Кюрчев, Сергей Владимирович
Penov, Oleg
Пенев, Олег Валентинович
Пеньов, Олег Валентинович
Cherkun, Vitalii
Черкун, Виталий Владимирович
Черкун, Віталій Володимирович
Keywords: Wastewater sludge
Sulfuric acids
Phosphoric acids
Heavy metal hydroxides
Issue Date: 2019
Publisher: Springer International Publishing
Series/Report no.: Modern Development Paths of Agricultural Production: Trends and Innovations;P. 11-16
Abstract: The process of wastewater sludge disposal with the subsequent application of the reaction product was developed. The waste of galvanic production after dehydration on the filter press to the humidity of 75– 80% was transferred into the chamber with a heater. Concentrated sulfuric and phosphoric acids were added as well. Dark green liquid of high viscosity was forming. Its density made up 1.67 g/cm3. Electrocorundum was thoroughly mixed with a different amount of adhesive and was laid into the forms. After drying at a particular temperature, the samples were tested. Unit weight of obtained samples increased from 0.57 to 0.9 g/cm3 with the rising of the adhesive content, while the strength was decreasing. More durable samples were obtained if the filler was dry electrocorundum. When the weight ratio of the adhesive to the electrocorundum mass increases, the concentration of chromium grows as well. The optimal composition for the manufacture of durable and water-resistant samples is the composition of 40 g of adhesive (from heavy metal hydroxides) with 100 g of electrocorundum.
URI: http://elar.tsatu.edu.ua/handle/123456789/7760
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