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    EFFECT OF WET GRINDING AND MECHANICAL DISPERSION ON THE SINTERING PROPERTIES OF KIZILDAM HALLOYSITE ORE
    (Baski, 2022) Durgut, E.; Terzi, M.; Unver, I. Kursun; Cinar, M.; Ozdemir, O.
    Kaolin type clay ores are generally ground in mills in the ceramic industry and are included in the body composition. During grinding, hard, coarse-sized impurities are ground into finer size, got involved the body composition and increased defects that cause loss of quality. In this study, the Kızıldam halloyite ore was dispersed by mechanical mixing in the presence of sodium hegzametaphosphate, than it was eliminated from the 212 ?m sieve, allowing the separation of hard minerals containing iron-bearing minerals from the relatively soft kaolin group clay minerals. -212 µm sized material that was gained from mechanical mixing and raw halloysite that was ground in the wet media were sintered in the wall tile (1145°C, 49 min.) and porcelain body (1205°C, 63 min.) sintering conditions, then the sintered materials were compared in terms of shrinkage, water absorption and color values. The L (whiteness) values of the materials that were gained with wet grinding were obtained as 64.55 and 58.14 in wall tile and porcelain sintering conditions respectively, while 73.07 and 70.76 were found for mechanical distribution. It was observed that the empurity removal from the halloysite ore by mechanical mixing increased the whiteness (L) value of the sintered product. © IMCET 2022. All rights reserved.
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    Investigation of the iron concentrate production from high magnetite containing silicate ores
    (Baski, 2019) Kursun, I.; Çinar, M.; Terzi, M.; Özdemir, O.
    In this study, possibility of iron concentrate production from a weathered silica ore with high iron content by gravity and magnetic separation methods were investigated in detail. The sample used in this study was obtained from Canakkale region. First of all, physical, chemical, and mineralogical properties of the sample were determined. Then, the sample was reduced to -1 mm particle size, and scrubbed at 50% solid ratio and 1000 rpm in order to eliminate the cementation of the iron containing minerals in the ore structure which was observed in the mineralogical examinations. After the scrubbing process, the samples were classified into three different particle size fractions (1×0.5 mm, 0.5times;0.212 mm, and 0.212times;0.038 mm). Next, a laboratory-scale Wilfley type shaking table and a wet high intensity magnetic separator were used to increase Fe2O3 content of the ore at these fractions. The gravity and magnetic separation experiments included rougher, cleaner and scavenger circuits. Finally, optimum enrichment parameters were determined, and a flow chart was proposed for the processing of the ore. The results obtained from this study were evaluated in terms of both technical and economical applicability of the gravity and magnetic separation methods for the production of iron concentrate from high iron containing silicate ores. Copyright © IMCET 2019 International Mining Congress and Exhibition of Turkey. All rights reserved.