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Phase composition study of natural minerals used as a source of white pigment production
|Marcin T. Klepka 1, Roman Minikayev 1, Maciej Jablonski 2, Aleksander Przepiera 2, Velichka Kontozova 3, Krystyna Lawniczak-Jablonska 1
1. Polish Academy of Sciences, Institute of Physics, al. Lotników 32/46, Warszawa 02-668, Poland
The phase composition of mineral ilmenites originated from the several places in the world (Norway, China, India, Australia) was investigated using complementary non-destructive and destructive methods. These minerals are commonly used in the white pigment production. Composition of the phases has large influence on efficiency and the quality of the final product. The non-destructive X–Ray Powder Diffraction (XRD), Single Particle Electron Probe Micro Analysis (Single Particle EPMA) and conventional X-Ray Fluorescence analysis (XRF) as well as destructive classical chemical analysis were applied for full characterisation of the mineral ilmenites. The materials have very complicated morphology, therefore conventional XRD and XRF provides confusing results which in many cases do not match. In a standard procedure composition of phases is given as a content of the most popular oxides. It does not fit to the real amount of oxygen in the material and quantity of particular chemical compounds. The diffraction pattern is complicate and several peaks overlap what make the analysis complicate and not unambiguous.
Presentation: Poster at 11th European Powder Diffraction Conference, Poster session, by Marcin T. Klepka
See On-line Journal of 11th European Powder Diffraction Conference
Submitted: 2008-05-07 16:46 Revised: 2009-06-07 00:48