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M. Kucharski, P. Madej, M. Wedrychowicz, T. Sak and W. Mróz

References [1] W.C. Cooper (Ed.), Tellurium, Van Nostrand Reinhold Company, New York, Cincinnati, Toronto, London, Melbourne, 1971. [2] K. Rogóz, M. Kucharsk i, The rate of metal oxides reduction from the slag of the direct-to-blister flash smelting process, Arch. Metall. Materials 55, 317-323 (2010). [3] A. Roine, HSC Chemistry for Windows, Chemical Reaction and Equilibrium Software with Extensive Thermochemical Database, 1999.

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V.C. Prabha and V. Revathi

) 108-119. 26. Antonia, Lucky Chandraa, Djwantoro Hardjitoa, “The impact of using fly ash, silica fume and calcium carbonate on the workability and compressive strength of mortar”, Procedia Engineering 125: 773 – 779, 2015. 27. M. Rostami, K. Behfarnia, “The effect of silica fume on durability of alkali activated slag concrete”, Construction and Building Materials 134: 262–268, 2017. 28. Suresh Thokchom, Debabrata Dutta, Somnath Ghosh, “Effect of Incorporating Silica Fume in Fly Ash Geopolymers, International Journal of Civil and Environmental

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V. Václavík, J. Daxner, J. Valíček, V. Dombek, T. Dvorský, M. Kušnerová and B. Václavíková

] Heviankova, S., Bestova, I. & Zechner, M. (2011). Possibilities of Acid Mine Drainage Treatment in Sokolovská uhelná, Czech Republic, Gospodarka Surowcami Mineralnymi - Mineral resources management, 27(3), 113-124. [13] Silva A.M, Cunha E.C., Reis F., Leão, V.A. (2012). Treatment of high-manganese mine water with limestone and sodium carbonate, Journal of Cleaner Production, (29-30), 11-19, DOI: 10.1016/j.jclepro.2012.01.032. [14] ČSN EN 1015-11: Methods of test for mortar for masonry - Part 11: Determination of fl exural and compressive

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Marina Valentukeviciene, Ramune Zurauskiene and Youssef Amine Boussouga

://www.researchgate.net/publication/310487634 . [38] Johansson L, Gustafsson JP. Phosphate removal using blast furnace slags and opoka-mechanisms. Wat Res. 2000;34(1):259-265. DOI: 10.1016/S0043-1354(99)00135-9. [39] Buzaeva MV, Pis’menko VT, Klimov ES. Decomposition of coolants using modified opoka. Chem Technol Fuels Oils. 2010;46(3):160-163. DOI: 10.1007/s10553-010-0203-x. [40] Wdowin M, Franus W, Panek R. Preliminary results of usage possibilities of carbonate and zeolitic sorbents in CO 2 capture. Fresen Environ Bull. 2012;21(12):3726-3734. https

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Toru Tamura, Kazumi Ito, Takahiko Inoue and Tetsuya Sakai

HCl and H 2 O 2 to remove carbonate and organic matter. Quartz and feldspar grains were then separated using sodium polytungstate liquids of densities 2.70, 2.58, and 2.53 g/cm 3 . The 2.53–2.58 g/cm 3 fraction was taken to be K-feldspar. Quartz samples were extracted by etching the 2.58–2.70 g/cm 3 fraction in 40% HF for one hour, followed by HCl treatment. Monolayers of dried quartz and feldspar grains were mounted on 9.8 mm diameter stainless steel disks. Luminescence measurements were done with a TL-DA-20 automated Risø TL/OSL reader equipped with blue and