Differential separation of albite from microcline by monovalent salts in HF medium

Demir C., Gulgonul I., Bentli I., Celik M.

MINERALS & METALLURGICAL PROCESSING, cilt.20, sa.3, ss.120-124, 2003 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 20 Sayı: 3
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1007/bf03403143
  • Dergi Adı: MINERALS & METALLURGICAL PROCESSING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.120-124
  • Karadeniz Teknik Üniversitesi Adresli: Hayır

Özet

Na-feldspar (albite) and K-feldspar (microcline or orthoclase) are major feldspar minerals with identical crystal structures and physico-chemical properties. Flotation appears to be a unique method of separating these minerals. Fundamental studies on an amine/feldspar system in the presence of monovalent salts have shown that separation of these feldspar minerals by flotation is possible at certain a concentration of monovalent salts at natural pH. In this study, flotation separation in hydrofluoric acid (HF) medium in the presence of salt was found to occur at higher amine concentrations at natural pH. A general mechanism based on differences in the charge of albite and microcline is proposed to be responsible for creating a surface charge on albite and microcline onto which amine adsorbs.