Combined XRD, EPMA and X-ray absorption study of mineral ilmenite used in pigments production

Klepka, Marcin T.; Ławniczak-Jabłońska, K.; Jabłoński, Maciej; Wolska, A.; Minikayev, R.; Paszkowicz, W.; Przepiera, A.; Spolnik, Zoya; Grieken, R. Van

doi:10.1016/j.jallcom.2005.02.047

Cited by 24 publications

(9 citation statements)

References 19 publications

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“…The ilmenite came from a deposit near Tellnes, Norway. The content and morphology of this deposit is well known and described widely in the literature [ 35 , 36 ]. It contains mainly hemoilmenite, orthopyroxene, plagioclase and also biotyte, magnetite, olivine, apatite, Fe-Ni-Co-Cu sulphates and other minerals.…”

Section: Methodsmentioning

confidence: 99%

Undissolved Ilmenite Mud from TiO2 Production—Waste or a Valuable Addition to Portland Cement Composites?

2020

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This paper presents a method of utilising ilmenite MUD created during the production of titanium dioxide (TiO2) according to the sulphate method as an additive for Portland cement composites. After the production process, undissolved MUD was additionally rinsed with water and filtrated in the factory to make it more useful (R-MUD) for implementation and also to turn back some of the by-products of the production of TiO2. R-MUD is less hazardous waste than MUD. It has a lower concentration of sulphuric acid and some heavy metals. The rinsing process raised the concentration of SiO2, which is a valuable part of R-MUD because of its potential pozzolanic activity. This means that the R-MUD might be a reactive substitute of part of Portland cement in building composites. The article presents the results of research on the pozzolanic activity of R-MUD and other materials with proved pozzolanic activity, such as silica fume, fly ash and natural pozzolana (trass). Tests were performed using thermal analysis techniques. The tests showed that the pozzolanic activity or R-MUD after three days is at the same level as silica fume and after 28 days it is twice as high as the activity of fly ash. Beyond the 180th day of curing, R-MUD had the same level of activity as fly ash. The summary is supplemented by calorimetric tests, which confirm the high reactivity of R-MUD compared to other commonly used concrete additives, already in the initial hydration period. In summary, heat of hydration after 72 h of Portland cement with R-MUD is at the same level as the heat of hydration of Portland cement with silica fume and also pure Portland cement grout. The results confirm that the process of formation of micro-silica contained in R-MUD react with calcium hydroxide to form the C-S-H phase, which is responsible for the microstructure of cement composites.

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Section: Methodsmentioning

confidence: 99%

Undissolved Ilmenite Mud from TiO2 Production—Waste or a Valuable Addition to Portland Cement Composites?

2020

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“…TiO 2 , FeO, SiO 2 ), which does not fit to the real content of oxygen in the material and contents of particular chemical compounds. Besides FeTiO 3 (the chemical formula of ilmenite), the raw material contains many other compounds (Klepka et al, 2005).…”

Section: Comprehensive Characterization Of Mineral Ilmenite Used In Pmentioning

confidence: 99%

“…The minerals are highly heterogeneous; there are some grains that contain more than 70% of one detected phase. For detailed study of heterogeneous materials, a single particle approach in EPMA was found very reliable and useful (Klepka et al, 2005).…”

Section: Comprehensive Characterization Of Mineral Ilmenite Used In Pmentioning

confidence: 99%

X-ray techniques for innovation in industry

Ławniczak-Jabłońska

Cutler

2014

Int Union Crystallogr J

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The smart specialization declared in the European program Horizon 2020, and the increasing cooperation between research and development found in companies and researchers at universities and research institutions have created a new paradigm where many calls for proposals require participation and funding from public and private entities. This has created a unique opportunity for large-scale facilities, such as synchrotron research laboratories, to participate in and support applied research programs. Scientific staff at synchrotron facilities have developed many advanced tools that make optimal use of the characteristics of the light generated by the storage ring. These tools have been exceptionally valuable for materials characterization including X-ray absorption spectroscopy, diffraction, tomography and scattering, and have been key in solving many research and development issues. Progress in optics and detectors, as well as a large effort put into the improvement of data analysis codes, have resulted in the development of reliable and reproducible procedures for materials characterization. Research with photons has contributed to the development of a wide variety of products such as plastics, cosmetics, chemicals, building materials, packaging materials and pharma. In this review, a few examples are highlighted of successful cooperation leading to solutions of a variety of industrial technological problems which have been exploited by industry including lessons learned from the Science Link project, supported by the European Commission, as a new approach to increase the number of commercial users at large-scale research infrastructures.

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“…Titania slag is prepared from ilmenite ore by carbothermal reduction in an electric arc furnace [1][2][3][4][5][6][7][8]. In this process, a large fraction of the iron content of the ilmenite is reduced to metallic iron.…”

Section: Introductionmentioning

confidence: 99%