Flotation of a porphyry copper ore with cellulose-surfactant mixtures as frother agents

Research output: Contribution to conferencePaperScientificpeer-review

Standard

Flotation of a porphyry copper ore with cellulose-surfactant mixtures as frother agents. / Nuorivaara, Ted; Serna Guerrero, Rodrigo.

2019. Paper presented at Copper, Vancouver, Canada.

Research output: Contribution to conferencePaperScientificpeer-review

Harvard

Nuorivaara, T & Serna Guerrero, R 2019, 'Flotation of a porphyry copper ore with cellulose-surfactant mixtures as frother agents' Paper presented at Copper, Vancouver, Canada, 18/08/2019 - 21/08/2019, .

APA

Vancouver

Author

Bibtex - Download

@conference{c60810b8c1ae41aa8ca459d17600411c,
title = "Flotation of a porphyry copper ore with cellulose-surfactant mixtures as frother agents",
abstract = "The use of polymer-surfactant mixtures as foam stabilization agents is a topic that has drawn the attention of several fields but has so far not be thoroughly studied in the context of mineral froth flotation. The present work showcases a study on the impact on flotation performance of cellulose surfactant derivatives and their mixtures with commercial frothers.Bubble size and foam property measurements were run in a two-phase system along with laboratory-scale flotation experiments conducted using a porphyry copper ore from a mine in Finland. A comparative analysis on recovery, grade and flotation kinetics is presented on the products obtained using: i) a partially hydroxylated cellulose derivative (i.e. hydroxypropyl methyl cellulose; HPMC), ii) a commercial polyglycol-ester frother (Nasfroth240; NF240), andiii) mixtures of these two.The results show that using frothers with a total concentration of 30 ppm, the HPMC-NF240 mixtures provide advantages in terms of Cu recovery, (i.e., up to 95{\%}), compared to the use of either NF240 (ca. 76{\%}) or HPMC alone (ca. 1{\%}). Interestingly, only a small proportion of HPMC mixed with NF240 was sufficient to produce a measurable increase in recovery. This improved performance was attributed to a synergistic effect of the polymer-surfactant mixturewhich further reduced the bubble sizes in a two-phase system compared to that of NF240. The present work offers a further step into understanding the phenomena taking place when a short chained surfactant is either substituted or mixed with a cellulose derivative, offering potential ways of exploiting this behavior for the enrichment of minerals.",
keywords = "Chalcopyrite, Copper, Flotation, Frothers, Green Chemistry, Hydroxypropyl methyl cellulose, Mineral processing, Polymer-surfactant mixtures",
author = "Ted Nuorivaara and {Serna Guerrero}, Rodrigo",
year = "2019",
month = "8",
day = "18",
language = "English",
note = "Copper ; Conference date: 18-08-2019 Through 21-08-2019",

}

RIS - Download

TY - CONF

T1 - Flotation of a porphyry copper ore with cellulose-surfactant mixtures as frother agents

AU - Nuorivaara, Ted

AU - Serna Guerrero, Rodrigo

PY - 2019/8/18

Y1 - 2019/8/18

N2 - The use of polymer-surfactant mixtures as foam stabilization agents is a topic that has drawn the attention of several fields but has so far not be thoroughly studied in the context of mineral froth flotation. The present work showcases a study on the impact on flotation performance of cellulose surfactant derivatives and their mixtures with commercial frothers.Bubble size and foam property measurements were run in a two-phase system along with laboratory-scale flotation experiments conducted using a porphyry copper ore from a mine in Finland. A comparative analysis on recovery, grade and flotation kinetics is presented on the products obtained using: i) a partially hydroxylated cellulose derivative (i.e. hydroxypropyl methyl cellulose; HPMC), ii) a commercial polyglycol-ester frother (Nasfroth240; NF240), andiii) mixtures of these two.The results show that using frothers with a total concentration of 30 ppm, the HPMC-NF240 mixtures provide advantages in terms of Cu recovery, (i.e., up to 95%), compared to the use of either NF240 (ca. 76%) or HPMC alone (ca. 1%). Interestingly, only a small proportion of HPMC mixed with NF240 was sufficient to produce a measurable increase in recovery. This improved performance was attributed to a synergistic effect of the polymer-surfactant mixturewhich further reduced the bubble sizes in a two-phase system compared to that of NF240. The present work offers a further step into understanding the phenomena taking place when a short chained surfactant is either substituted or mixed with a cellulose derivative, offering potential ways of exploiting this behavior for the enrichment of minerals.

AB - The use of polymer-surfactant mixtures as foam stabilization agents is a topic that has drawn the attention of several fields but has so far not be thoroughly studied in the context of mineral froth flotation. The present work showcases a study on the impact on flotation performance of cellulose surfactant derivatives and their mixtures with commercial frothers.Bubble size and foam property measurements were run in a two-phase system along with laboratory-scale flotation experiments conducted using a porphyry copper ore from a mine in Finland. A comparative analysis on recovery, grade and flotation kinetics is presented on the products obtained using: i) a partially hydroxylated cellulose derivative (i.e. hydroxypropyl methyl cellulose; HPMC), ii) a commercial polyglycol-ester frother (Nasfroth240; NF240), andiii) mixtures of these two.The results show that using frothers with a total concentration of 30 ppm, the HPMC-NF240 mixtures provide advantages in terms of Cu recovery, (i.e., up to 95%), compared to the use of either NF240 (ca. 76%) or HPMC alone (ca. 1%). Interestingly, only a small proportion of HPMC mixed with NF240 was sufficient to produce a measurable increase in recovery. This improved performance was attributed to a synergistic effect of the polymer-surfactant mixturewhich further reduced the bubble sizes in a two-phase system compared to that of NF240. The present work offers a further step into understanding the phenomena taking place when a short chained surfactant is either substituted or mixed with a cellulose derivative, offering potential ways of exploiting this behavior for the enrichment of minerals.

KW - Chalcopyrite

KW - Copper

KW - Flotation

KW - Frothers

KW - Green Chemistry

KW - Hydroxypropyl methyl cellulose

KW - Mineral processing

KW - Polymer-surfactant mixtures

M3 - Paper

ER -

ID: 39411126