20.500.12556/RUL-159511 Vpliv uporabe okolju prijaznejših talil na lastnosti žlinder diplomsko delo The influence of utilizing environmentally friendlier fluxes on slag properties diploma work V diplomskem delu smo raziskovali vpliv talil na lastnosti žlinder v procesu sekundarne metalurgije jekel. V raziskavi smo med seboj primerjali talila na osnovi aluminijevega oksida (Al2O3) in jedavca (CaF2). V prvem delu naloge je opredeljena tehnološka pomembnost žlindre pri kakovostni proizvodnji jekla in kako dodajanje talil pomembno vliva na njene kemične in fizikalne lastnosti. V drugem delu naloge pa so predstavljene tri po nastanku različne žlindre, ki smo jih raziskali ter med seboj primerjali s pomočjo mikroskopskih in mikroanalitskih metod. Preiskovana žlindra je bila vzeta v procesu sekundarne metalurgije med postopkom vakuumske obdelave, tik predno je jeklo odšlo na litje. V raziskavi se je primerjala tako mikrostruktura in kemična sestava talil kot tudi nastale žlindre. Pri raziskavi smo uporabili elektronski mikroskop in XRF spektrometer. Glavni cilj diplomskega dela je ugotoviti vpliv uporabe okolju prijaznejših talil na lastnosti žlindre sekundarne metalurgije. Z zamenjavo jedavca z aluminatnimi talili se v tehnološkem procesu zmanjša izločanje fluora, ki je nevaren za zdravje in okolje. In the thesis, we investigated the influence of fluxes on the properties of slag in the process of secondary metallurgy of steels. In our research we compared fluxes based on aluminium oxide (Al2O3) and fluorite (CaF2). The first part of the thesis defines the technological importance of slag in high-quality steel production and how adding fluxes significantly affects its chemical and physical properties. The second part presents three differently formed slags, which we analysed and compared using microscopic and microanalytical methods. The examined slag was taken in the process of secondary metallurgy during vacuum treatment, just before the steel was cast. We compared both the microstructure and chemical composition of the fluxes and the resulting slag. The research was conducted using an electron microscope and an XRF spectrometer. The main goal of the thesis is to determine the influence of utilizing environmentally friendlier fluxes on the properties of secondary metallurgy slag. By substituting fluorite with alumina - based fluxes in the technological process, the emission of fluorine, which is hazardous to health and the environment, is reduced. žlindra talila za žlindro sekundarna metalurgija jedavec aluminatna talila slag slag fluxes secondary metallurgy fluorite alumina fluxes true false false T. Štrus Slovenski jezik Angleški jezik Diplomsko delo/naloga 2024-07-11 09:00:06 2024-07-11 09:00:09 2024-07-24 10:26:37 0000-00-00 00:00:00 2024 0 Ljubljana 0 Ljubljana XII, 58 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 669 98368 202643459 20683.pdf 20683.pdf 1 506DBEE6FDD122077328570FA57EE2E1 19682909400aa51a4ff05fbd56ddd9a7358bd2b7c603c6cd0748a326f817b34b 326bc03f-3f53-11ef-8f74-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=187543 Naravoslovnotehniška fakulteta 0 0 0