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Title: Hydrophobic flocculation flotation for beneficiating fine coal and minerals

Abstract

It is shown that hydrophobic flocculation flotation (HFF) is an effective process to treat finely ground ores and slimes so as to concentrate coal and mineral values at a fine size range. The process is based on first dispersing the fine particles suspension, followed by flocculation of fine mineral values or coal in the form of hydrophobic surfaces either induced by specifically adsorbed surfactants or from nature at the conditioning of the slurry with the shear field of sufficient magnitude. The flocculation is intensified by the addition of a small amount of nonpolar oil. finely ground coals, ilmenite slimes, and gold finely disseminated in a slag have been treated by this process. Results are presented indicating that cleaned coal with low ash and sulfur remaining and high Btu recovery can be obtained, and the refractory ores of ilmenite slimes and fine gold-bearing slag can be reasonably concentrated, leading to better beneficiation results than other separation techniques. In addition, the main operating parameters affecting the HFF process are discussed.

Authors:
;  [1]
  1. Univ. Autonoma de San Luis Potosi (Mexico). Inst. de Metalurgia
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
634704
Resource Type:
Journal Article
Journal Name:
Separation Science and Technology
Additional Journal Information:
Journal Volume: 33; Journal Issue: 8; Other Information: PBD: Jun 1998
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; COAL PREPARATION; FLOTATION; COAL FINES; DEASHING; DESULFURIZATION; ORE PROCESSING; BITUMINOUS COAL; EXPERIMENTAL DATA

Citation Formats

Song, S, and Valdivieso, A L. Hydrophobic flocculation flotation for beneficiating fine coal and minerals. United States: N. p., 1998. Web. doi:10.1080/01496399808545249.
Song, S, & Valdivieso, A L. Hydrophobic flocculation flotation for beneficiating fine coal and minerals. United States. doi:10.1080/01496399808545249.
Song, S, and Valdivieso, A L. Mon . "Hydrophobic flocculation flotation for beneficiating fine coal and minerals". United States. doi:10.1080/01496399808545249.
@article{osti_634704,
title = {Hydrophobic flocculation flotation for beneficiating fine coal and minerals},
author = {Song, S and Valdivieso, A L},
abstractNote = {It is shown that hydrophobic flocculation flotation (HFF) is an effective process to treat finely ground ores and slimes so as to concentrate coal and mineral values at a fine size range. The process is based on first dispersing the fine particles suspension, followed by flocculation of fine mineral values or coal in the form of hydrophobic surfaces either induced by specifically adsorbed surfactants or from nature at the conditioning of the slurry with the shear field of sufficient magnitude. The flocculation is intensified by the addition of a small amount of nonpolar oil. finely ground coals, ilmenite slimes, and gold finely disseminated in a slag have been treated by this process. Results are presented indicating that cleaned coal with low ash and sulfur remaining and high Btu recovery can be obtained, and the refractory ores of ilmenite slimes and fine gold-bearing slag can be reasonably concentrated, leading to better beneficiation results than other separation techniques. In addition, the main operating parameters affecting the HFF process are discussed.},
doi = {10.1080/01496399808545249},
journal = {Separation Science and Technology},
number = 8,
volume = 33,
place = {United States},
year = {1998},
month = {6}
}