20.500.12556/DKUM-48023 OPTIMIZACIJA POSTOPKA INDUSTRIJSKE MIKRONIZACIJE V PROIZVODNJI TITANOVEGA DIOKSIDA OPTIMIZATION OF INDUSTRIAL MICRONIZATION PROCESS IN THE PRODUCTION OF TITANIUM DIO XIDE Namen magistrskega dela je bil določiti optimalne pogoje za delovanje zračnega mikronizerja v procesu Končne predelave TiO2 z uporabo eksperimentalnega optimiranja. S statističnim programskim paketom Minitab smo preverili vpliv zunanje temperature in vlažnosti na sejalni ostanek pri mikronizaciji. Z metodo po Taguchiju smo preverili vpliv dodajanja trimetilol propana (TMP) in gretja mikronizerja s keramičnimi grelci. S statističnimi korelacijami smo iskali povezavo med mikronizacijo in hitrostjo usedanja pri hidrolizi, porazdelitvijo velikosti delcev ter mletjem pigmenta z Loesche mlini. Ugotovili smo, da v hladnem in vlažnem času dosegamo boljše (nižje) rezultate sejalnih ostankov z mlini, na katerih so nameščeni keramični grelci, mikronizaciji pa dodajamo 0,05 % TMP. Nižje sejalne ostanke dobimo pri višji temperaturi komprimiranega zraka. Rezultati kažejo, da na minimiziranje sejalnega ostanka vplivajo tudi operacije pred mikronizacijo, kot npr. hidroliza in mletje pigmenta. Optimalni pogoji za doseganje nizkega sejalnega ostanka pri mikronizaciji so nizek sejalni ostanek pri mletju pigmenta, ozka porazdelitev velikosti delcev in nizka hitrost usedanja pri hidrolizi. The purpose of this master thesis was to determine the optimal conditions for the operation of the Air Jet Milling operation within the process of TiO2 finalization by using experimental optimization. The impacts of outdoor temperature and humidity on the sieve residue within the micronization process were examined by using a statistical package Minitab. The impacts of the trimethyl propane (TMP) addition and jet mill heating through the ceramic heaters were examined by the Taguchi method. The links between the micronization and the sedimentation at the hydrolysis, particle size distribution and Loesche milling were studied through the statistical correlations. During the cold and wet weather, better (lower) sieve residues were obtained by using jet mills with installed ceramic heaters while adding 0,05 % of TMP. Lower sieving residues were also obtained at the higher temperature of the compressed air. The results show that upstream operations, like hydrolysis and Loesche milling affect the minimization of the sieve residue. Optimum conditions for achieving small sieve residues during the micronization process can be obtained at low sieve residue at Loesche milling, narrow particle size distribution and small sedimentation at the hydrolysis. mikronizacija zračni mikronizer titanov dioksid korelacija optimizacija micronization jet mill titanium dioxide correlation optimization true true false [U. Senica] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2015-05-12 22:14:09 2015-06-02 11:08:01 2022-05-23 03:07:32 2021-05-08 03:27:04 2015 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 549.514.6(043.2) 19083030 URN:SI:UM:DK:VTI1YBXQ MAG_Senica_Urban_2015.pdf MAG_Senica_Urban_2015.pdf 1 F6C354701ACA1A467731078DEFC00A5A 8a0e7386fa4d8640af335425c30e329046a2cf971f317752e2f0d91fcec2b0a7 aa43130f-7c0b-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=72111 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0