20.500.12556/DKUM-17030 RAZVOJ TEHNOLOŠKEGA POSTOPKA ČIŠČENJA ULTRAFINEGA TITANOVEGA DIOKSIDA DEVELOPMENT OF PROCESSING TECHNOLOGY FOR CLEANING ULTRAFINE TITANIUM DIOXIDE Pri tem diplomskem delu smo poskušali razviti postopek za čiščenje ultrafinega titanovega dioksida. Ugotovili smo, da je čiščenje zelo efektivno s pomočjo centrifugiranja. Imeli smo tri suspenzije ultrafinih delcev titanovega dioksida. Dve suspenziji sta vsebovali rutil, ki je bil dispergiran v različnih koncentracijah kisline, tretja suspenzija pa je vsebovala anatas. Pred čiščenjem smo dodali koagulant, da smo dobili boljše rezultate in hitrejšo ločitev. Čiščenje je potekalo v treh stopnjah. Najprej smo eksperimente izvedli v laboratorijskem merilu, da smo določili optimalne procesne parametre. Dobljene rezultate smo preizkusili na pilotni centrifugi. Na podlagi tega smo pripravili tehnološke sheme v industrijskem merilu in izračunali kapacitete tehnološkega postopka. We were trying to develop processing technology for cleaning ultra- fine titanium dioxide. The experiments showed, that the process is effective only if centrifuges are used. Three different suspensions of ultra-fine titanium dioxide were used. Two of the suspensions had dispersed particles of rutil in different concentrations of acid. In the third suspension dispersed particles of anatas were used. Before cleaning, the coagulant was added. In this way better results were obtained and the whole separation occured quicker. The whole process was performed in three stages. First the experiments were performed on laboratory scale and optimal process parameters were determined. Based on these results the process was performed on pilot scale. Based on all obtained parameters and results, a technology scheme was developed and the capacities for the technological process were calculated. titanov dioksid nanodelci centrifugiranje koagulacija titanium dioxide nanoparticles centrifugation coagulation true true false [A. Pfeifer] Slovenski jezik Angleški jezik Diplomsko delo 2010-12-14 14:21:46 2010-12-23 11:48:31 2022-04-13 09:07:55 2023-12-21 03:29:43 2010 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66.067.5(043.2) 15002134 URN:SI:UM:DK:TDFUR9IS UNI_Pfeifer_Anja_2010.pdf UNI_Pfeifer_Anja_2010.pdf 1 9E832A467662992EB8215AE945591DA5 9baad4db6f6ccbf53283c84b619da3abca0ee7f0fc6585ce2737bea9333ceb17 ca66df17-7c04-11eb-bb7a-00155d0001ca 20.500.12556/dkum/c6485dec-a259-4152-a5a5-1d3a639c6b69 https://dk.um.si/Dokument.php?lang=slv&id=19622 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0