Production of aluminum titanate from pyrophyllite ore

Uysal T., Erdemoğlu M.

Politeknik Dergisi, cilt.25, sa.1, ss.313-319, 2022 (ESCI)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Sayı: 1
  • Basım Tarihi: 2022
  • Doi Numarası: 10.2339/politeknik.773466
  • Dergi Adı: Politeknik Dergisi
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.313-319
  • İnönü Üniversitesi Adresli: Evet

Özet

Aluminum titanate (Al2TiO5) is an advanced ceramic material produced artificially from the alumina (Al2O3) and titanium oxide (TiO2) components. In this study, alumina which is produced from pyrophyllite ore and commercial rutile were used to manufacture the aluminum titanate. The alumina used in the study was obtained by roasting the aluminum chloride salt precipitated from the loaded solution obtained by HCl leaching of the pyrophyllite ore. The resulting alumina and commercial rutile mixture is intensively milled, shaped and sintered at different temperatures to produce aluminum titanate. The result of sintering is that aluminum titanate formation is at 1359 °C in the milled mixture and at 1367 °C in the unmilled mixture. Formation of aluminum titanate at a lower temperature than the unmilled mixture, much less presence of microcracks and lack of pores clearly demonstrate the effect of mechanical activation. As a result, it has been shown that aluminum titanate with high added value can be produced from alumina recovered from pyrophyllite ore by hydrometallurgical processes.

Keywords: Pyrophyllite, alumina, mechanical activation, aluminum titanate.