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Recovery of Phosphate Minerals from Plant Tailings Using Direct Froth Flotation
  • Ashraf Alsafasfeh
  • Lana Z. Alagha, Missouri University of Science and Technology

Wastes produced from the phosphate industry presents many challenges due to the high economic and environmental impacts involved with their disposal. However, the relative scarcity of high-grade phosphate ores has driven researchers to recover and recycle these valuable wastes (secondary sources). The goal of this study was to investigate the possibility of upgrading the P2O5 content in tailings produced from a phosphorous production plant using direct froth flotation. Characterization assays, including X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray fluorescence (XRF), and mineral liberation analysis (MLA), were first conducted to identify the mineralogical and morphological characteristics of tailings samples and grain properties to better understand the behavior of the flotation feed. Flotation experiments were conducted using Denver D-12 in a 1-L flotation cell in the presence of sodium silicate (dispersant) and sodium oleate (collector). Several parameters, such as the solids content of the flotation pulp, pulp pH and flotation time, were investigated to optimize the recovery and grade of the concentrate products. Results obtained from this study indicated that the P2O5 content in plant tailings could be upgraded from 21.57% to 28.4% at > 73% recovery.

Mining and Nuclear Engineering
Keywords and Phrases
  • Froth flotation,
  • Mineral liberation analysis,
  • Phosphate minerals,
  • Sodium silicate
Document Type
Article - Journal
Document Version
Final Version
File Type
© 2017 The Author(s), All rights reserved.
Creative Commons Licensing
Creative Commons Attribution 4.0
Publication Date
Citation Information
Ashraf Alsafasfeh and Lana Z. Alagha. "Recovery of Phosphate Minerals from Plant Tailings Using Direct Froth Flotation" Minerals Vol. 7 Iss. 8 (2017) ISSN: 2075-163X
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