PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Powiadomienia systemowe
  • Sesja wygasła!
  • Sesja wygasła!
Tytuł artykułu

Characterization of espey colemanite and variation of its physical properties with temperature

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
It is important to characterize boron containing minerals because of their uses in a wide range of applications. The purpose of this study is to characterize Espey colemanite by minerological, petrographical and thermal means and to investigate the variation of its physical properties with temperature (up to 600 °C). Colemanite, having a non-porous crystalline structure, was found to consist of 35.8% B2O3 and 30.5% SiO2. The thermal decomposition of colemanite occurred within the temperature range of 300–600 °C. It was found that calcination, a thermal treatment method, influenced the physical properties of colemanite. The highest surface area, 131.9 m2/g, was obtained at 500 °C. The physical properties were found to have high statistical relation.
Rocznik
Strony
66--76
Opis fizyczny
Bibliogr. 22 poz., rys., tab.
Twórcy
autor
  • National Boron Research Institute, Dumlupinar Bulvari, 166-10, 06520 Ankara, Turkey
autor
  • Ankara University, Institute of Nuclear Sciences, 06100 Tandogan, Ankara, Turkey
Bibliografia
  • ASTM C127-42., 2003, Standard test method for specific gravity and absorption of coarse aggregates, Annual Book of ASTM Standards, Philadelphia, USA.
  • ASTM C128-57., 2003, Standard test method for specific gravity and absorption of fine aggregates, Annual Book of ASTM Standards, Philadelphia, USA.
  • BURNS P.C., HAWTHORNE F.C., 1993, Hydrogen bonding in colemanite: an X-ray and structure-energy study, Canadian Minerologist, 31, 297–304.
  • CAKAL G.O., 2004, Dynamic behavior of continuous flow stirred slurry reactors in boric acid production, PhD Dissertation, Middle East Technical University, Ankara,
  • CAKAL G.O., EROGLU I., OZKAR S., 2006, Gypsum crystal size distribution in four continuous flow stirred slurry boric acid reactors in series compared with the batch. J. Crys. Grow., 290, 197–202.
  • CElIK A.G., 2010, Production of lightweight bricks from boron added perlite mixtures and determination of technological properties, PhD Dissertation, Cukurova University, Department of Mining Engineering, Adana.
  • CELIK A.G., DEPCI T., KILIÇ A.M., 2014, New lightweight colemanite-added perlite brick and comparison of its physicomechanical properties with other commercial lightweight materials, Con. Build. Mat., 62, 59–66.
  • CHRIST C.L., CLARK J.R., EVANS H.T., 1958., Studies of borate minerals (III): the crystal structure of colemanite, CaB3O4(OH)3.H2O, Acta Cryst. 11, 761–770.
  • COLAK M., HELVACI C., MAGGETTI M., 2000, Saponite from the Emet Colemanite Mines, Kütahya, Turkey, Clays and Clay Minerals, 484, 409–423.
  • ETI MINE, 2008, Eti Mine Works General Management Annual Report, Ankara.
  • ETI MINE, 2014. Espey Colemanite, Product Data Sheet, Ankara.
  • The Freedonia Group Inc., 2010, Freedonia Focus on Boron, Cleveland.
  • FROST R.L., XI Y., SCHOLZ R., BELOTTI F.M., FILHO M.C., 2013, Infrared and Raman spectroscopic characterization of the borate mineral colemanite – CaB3O4(OH)3xH2O – implications for the molecular structure, J. Mol. Struc., 1037, 23–28.
  • PALMER M.R., HELVACI C., 1995, The boron isotope geochemistry of the Kirka borate deposit, western Turkey, Geochimica et Cosmochimica Acta, 59, 3599–3605.
  • Roskill Information Services Ltd., 2010, The Economics of Boron, 12th edition, London.
  • SENER S., OZBAYOGLU G., DEMIRCI S., 2000, Changes in the structure of ulexite on heating. Thermochim. Acta, 362, 107–112.
  • YILMAZ O., YALÇINOĞLU Y., ERGÜL T., DEMİRBAĞ C., ŞENTÜRK B., AKÇİN H., KAYANDAN İ., ULUDAĞ T., 2007, TR-2007/03372. Calcinated tincal production with single-stage calcination- autogeneous grinding and separation method (cgs).
  • TS 1114 EN 13055-1, 2004, Lightweight aggregates - Part 1: For use in concrete, Mortar and the juice.
  • TS 3529, 1980, Determination of specific gravity and water absorption ratio in concrete aggregates.
  • WACLAWSKA I., 1998, Controlled rate thermal analysis of hyrated borates, J. Therm. Anal., 53, 519–532.
  • YILDI, O., 2004, The effect of heat treatment on colemanite processing: a ceramics application, Powder Technol., 142, 7–12.
  • YILMAZ O., 2014, Production of calcined tincal from run-of-mine tincal, Journal of the Faculty of Engineering and Architecture of Gazi University, 29, 401–406.
Uwagi
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-e33ed2a1-1605-4ff2-8f0f-80bbf3c2f256
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.