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June 3, 2026Doklady Earth Sciences

Experimental Study of the Solubility of Niobium Oxide and Pyrochlore in Fluoride Solutions at 300‒550°C, 50 and 100 MPa

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Authors

NKN P KotovaInstitute of Experimental MineralogyVKV. S. KorzhinskayaInstitute of Experimental MineralogyYSYu. B. ShapovalovInstitute of Experimental Mineralogy

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Overview

Experimental study investigates niobium mineral solubility in fluoride solutions, suggesting conditions enhance Nb transport.

Key Points

  • The study aims to explore how different physicochemical parameters affect niobium mineral solubility in fluoride solutions.
  • Experimental analysis conducted at 300-550°C and 50-100 MPa
  • Investigated solubility in fluoride solutions including HF, KF, NaF, and LiF
  • Varying concentrations of fluoride solutions from 0.01 to 2 m
  • Acidic fluoride solutions and reducing conditions enhance niobium solubility
  • Temperature and pressure changes have minimal impact on mineral solubility
  • Equilibrium Nb contents were compared between pyrochlore and niobium oxide dissolution

Cite This Study

Kotova et al. (2026) studied this question.

synapsesocial.com/papers/6a1fc616dee9eb8c0dce74bfhttps://doi.org/10.1134/s1028334x26600635
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