Selective Flocculation Separation of Fine Hematite from Quartz Using a Novel Grafted Copolymer Flocculant

Beneficiation of ultrafine mineral particles (typically with an average size less than 20 µm) remains a critical problem for the mineral processing industry. Selective flocculation technique has been found to show great potential to tackle this problem, whose success mainly depends on the...
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Autor*in:	Jinxia Zhang [verfasserIn] Weiguang Sun [verfasserIn] Zhiyong Gao [verfasserIn] Fusheng Niu [verfasserIn] Long Wang [verfasserIn] Yawei Zhao [verfasserIn] Yuesheng Gao [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2018

Schlagwörter:	Hematite quartz grafted copolymer flocculant flocculation fine particles

Übergeordnetes Werk:	In: Minerals - MDPI AG, 2012, 8(2018), 6, p 227
Übergeordnetes Werk:	volume:8 ; year:2018 ; number:6, p 227

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/min8060227

Katalog-ID:	DOAJ040997189

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520			\|a Beneficiation of ultrafine mineral particles (typically with an average size less than 20 µm) remains a critical problem for the mineral processing industry. Selective flocculation technique has been found to show great potential to tackle this problem, whose success mainly depends on the selective adsorption of a flocculant on the target mineral particles. In this work, a novel copolymer flocculant was synthesized by grafting starch and acrylamide, which for the first time, was employed in the flocculation separation of fine hematite from quartz. The composites of the grafted copolymer flocculant (GCF) were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The single mineral flocculation results showed that at the pH of 10–11 and GCF concentration of 125 mg/L, hematite flocs with a compact texture were formed, whose average diameter and fractal dimension reached 36 µm and 2.02, respectively; while quartz flocs were barely observed, and the average diameter of particles stayed at approximately 20 µm. Furthermore, the selective flocculation separation was confirmed in the mixed mineral flocculation. From adsorption tests and zeta potential measurements, it is shown that GCF tended to adsorb more selectively and intensely on hematite surfaces compared with quartz. This study provides a valuable reference for the efficient recovery of fine hematite particles.
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language	English
source	In Minerals 8(2018), 6, p 227 volume:8 year:2018 number:6, p 227
sourceStr	In Minerals 8(2018), 6, p 227 volume:8 year:2018 number:6, p 227
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institution	findex.gbv.de
topic_facet	Hematite quartz grafted copolymer flocculant flocculation fine particles Mineralogy
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container_title	Minerals
authorswithroles_txt_mv	Jinxia Zhang @@aut@@ Weiguang Sun @@aut@@ Zhiyong Gao @@aut@@ Fusheng Niu @@aut@@ Long Wang @@aut@@ Yawei Zhao @@aut@@ Yuesheng Gao @@aut@@
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callnumber-first	Q - Science
author	Jinxia Zhang
spellingShingle	Jinxia Zhang misc QE351-399.2 misc Hematite misc quartz misc grafted copolymer flocculant misc flocculation misc fine particles misc Mineralogy Selective Flocculation Separation of Fine Hematite from Quartz Using a Novel Grafted Copolymer Flocculant
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topic_title	QE351-399.2 Selective Flocculation Separation of Fine Hematite from Quartz Using a Novel Grafted Copolymer Flocculant Hematite quartz grafted copolymer flocculant flocculation fine particles
topic	misc QE351-399.2 misc Hematite misc quartz misc grafted copolymer flocculant misc flocculation misc fine particles misc Mineralogy
topic_unstemmed	misc QE351-399.2 misc Hematite misc quartz misc grafted copolymer flocculant misc flocculation misc fine particles misc Mineralogy
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title	Selective Flocculation Separation of Fine Hematite from Quartz Using a Novel Grafted Copolymer Flocculant
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title_full	Selective Flocculation Separation of Fine Hematite from Quartz Using a Novel Grafted Copolymer Flocculant
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title_sort	selective flocculation separation of fine hematite from quartz using a novel grafted copolymer flocculant
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title_auth	Selective Flocculation Separation of Fine Hematite from Quartz Using a Novel Grafted Copolymer Flocculant
abstract	Beneficiation of ultrafine mineral particles (typically with an average size less than 20 µm) remains a critical problem for the mineral processing industry. Selective flocculation technique has been found to show great potential to tackle this problem, whose success mainly depends on the selective adsorption of a flocculant on the target mineral particles. In this work, a novel copolymer flocculant was synthesized by grafting starch and acrylamide, which for the first time, was employed in the flocculation separation of fine hematite from quartz. The composites of the grafted copolymer flocculant (GCF) were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The single mineral flocculation results showed that at the pH of 10–11 and GCF concentration of 125 mg/L, hematite flocs with a compact texture were formed, whose average diameter and fractal dimension reached 36 µm and 2.02, respectively; while quartz flocs were barely observed, and the average diameter of particles stayed at approximately 20 µm. Furthermore, the selective flocculation separation was confirmed in the mixed mineral flocculation. From adsorption tests and zeta potential measurements, it is shown that GCF tended to adsorb more selectively and intensely on hematite surfaces compared with quartz. This study provides a valuable reference for the efficient recovery of fine hematite particles.
abstractGer	Beneficiation of ultrafine mineral particles (typically with an average size less than 20 µm) remains a critical problem for the mineral processing industry. Selective flocculation technique has been found to show great potential to tackle this problem, whose success mainly depends on the selective adsorption of a flocculant on the target mineral particles. In this work, a novel copolymer flocculant was synthesized by grafting starch and acrylamide, which for the first time, was employed in the flocculation separation of fine hematite from quartz. The composites of the grafted copolymer flocculant (GCF) were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The single mineral flocculation results showed that at the pH of 10–11 and GCF concentration of 125 mg/L, hematite flocs with a compact texture were formed, whose average diameter and fractal dimension reached 36 µm and 2.02, respectively; while quartz flocs were barely observed, and the average diameter of particles stayed at approximately 20 µm. Furthermore, the selective flocculation separation was confirmed in the mixed mineral flocculation. From adsorption tests and zeta potential measurements, it is shown that GCF tended to adsorb more selectively and intensely on hematite surfaces compared with quartz. This study provides a valuable reference for the efficient recovery of fine hematite particles.
abstract_unstemmed	Beneficiation of ultrafine mineral particles (typically with an average size less than 20 µm) remains a critical problem for the mineral processing industry. Selective flocculation technique has been found to show great potential to tackle this problem, whose success mainly depends on the selective adsorption of a flocculant on the target mineral particles. In this work, a novel copolymer flocculant was synthesized by grafting starch and acrylamide, which for the first time, was employed in the flocculation separation of fine hematite from quartz. The composites of the grafted copolymer flocculant (GCF) were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The single mineral flocculation results showed that at the pH of 10–11 and GCF concentration of 125 mg/L, hematite flocs with a compact texture were formed, whose average diameter and fractal dimension reached 36 µm and 2.02, respectively; while quartz flocs were barely observed, and the average diameter of particles stayed at approximately 20 µm. Furthermore, the selective flocculation separation was confirmed in the mixed mineral flocculation. From adsorption tests and zeta potential measurements, it is shown that GCF tended to adsorb more selectively and intensely on hematite surfaces compared with quartz. This study provides a valuable reference for the efficient recovery of fine hematite particles.
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container_issue	6, p 227
title_short	Selective Flocculation Separation of Fine Hematite from Quartz Using a Novel Grafted Copolymer Flocculant
url	https://doi.org/10.3390/min8060227 https://doaj.org/article/cda74802bb2e49a4a57e33874c84a438 http://www.mdpi.com/2075-163X/8/6/227 https://doaj.org/toc/2075-163X
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up_date	2024-07-03T17:52:31.312Z
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Selective Flocculation Separation of Fine Hematite from Quartz Using a Novel Grafted Copolymer Flocculant

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