Browsing by Author "Kryklyvyi, Rostyslav"

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    Technological aspects of environmentally friendly processes of domestic phosphorites reduction
    (Publishing House of Lviv Polytechnic National University, 2016) Petruk, Roman; Petruk, Halyna; Kryklyvyi, Rostyslav; Bezvozyuk, Iryna
    Chemical processes of phosphorites reduction by natural gas have been examined in the presence of sodium sulphate. The exchange of soda fluxing additives for sodium sulfate decreases the reduction process temperature, when such valuable products as phosphorus sulfides are formed, namely P4S10. We have shown that such exchange allows to reduce the process power consumption. В статті розглянуто теоретичні та технологічні основи екологічно безпечних процесів відновлення вітчизняних фосфоритів природним газом у присутності сульфату натрію. Встановлено, що заміна содових флюсуючих добавок на сульфат натрію призводить до зниження температури відновлювального процесу з 1323 до 1223 K, при якій утворюються цінні продукти – сульфіди фосфору і, передусім, P4S10, що дає можливість знизити енергоємність виробництва.
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    Use of clay sorptive materials in the synthesis of polymer materials
    (Видавництво Львівської політехніки, 2022-06-01) Kryklyvyi, Rostyslav; Sakalova, Halyna; Petrushka, Kateryna; Luchyt, Liubov; Vinnytsia Mykhailo Kotsiubynskyi State Pedagogical University; Lviv Polytechnic National University
    The paper suggests the solution to the urgent problem of increasing the level of environmental safety of industrial wastewater treatment from heavy metal using natural and modified bentonite.The use of spent bentonite in the processes of filling polymers is investigated. The aim of the research was to study the influence of fillers on the crosslinking course and functional properties of vulcanized elastomeric mixtures. Test research compositions included chloroprene rubber and chlorosulfonated polyethylene. Nanofillers were used as a strengthening substance. Montmorillonite and spent montmorillonite saturated with copper ions were used as nanofiller.