Open Access

Minerals

, volume 9 , issue 5 , pages 320

Magnetite and Carbon Extraction from Coal Fly Ash Using Magnetic Separation and Flotation Methods

Dmitry Valeev ¹

Irina Kunilova ²

Alexander Alpatov ³

Alika Varnavskaya ⁴

Dianchun Ju ⁵

Hide authors affiliations Show authors affiliations: 5 affiliations

I.P. Bardin Laboratory for Problems of Metallurgy for Complex Ores, A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Science, Leninsky prosp., 49, Moscow 119334, Russia |

Laboratory No. 4.2. Complex processing of non-traditional mineral materials, Research Institute of Comprehensive Exploitation of Mineral Resources-IPKON, Russian Academy of Sciences, Kryukovskii tupik 4, Moscow 111020, Russia |

Laboratory of Material Diagnostics, A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Science, Leninsky prosp., 49, Moscow 119334, Russia |

⁴

Faculty of Technology of Inorganic Substances and High-Temperature Materials, D. Mendeleev University of Chemical Technology of Russia, Mjusskaja square, 9, Moscow 125047, Russia |

⁵

School of Metallurgical and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang Campus, Zhangjiagang 215600, China |

Publication type: Journal Article

Publication date: 2019-05-25

MDPI

Minerals

scimago Q2

wos Q2

SJR: 0.545

CiteScore: 4.4

Impact factor: 2.2

ISSN: 2075163X

DOI: 10.3390/min9050320

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Geotechnical Engineering and Engineering Geology

Geology

Abstract

In this study, enrichment methods for coal fly ash (CFA) from Omsk thermal power station No. 4 (TPS-4) were investigated. The magnetite and unburned carbon concentrates were obtained by magnetic separation and flotation methods. The wet magnetic separation used in the study increased the magnetite content in the magnetic fraction from 10.48 to 12.72 wt % compared to dry magnetic separation. The XRD analysis showed that the magnetic fraction primarily consists of magnetite, mullite, and quartz. The SEM analysis demonstrated that magnetite is located primarily on the surface of alumosilicate spheres and has three types of shape: dendritic structures, hexagonal bulk agglomerates, and star-like structures. For the flotation tests, a low-price diesel was used as the collector. It was found that, if CFA particles of 40–71 µm are used, ~99% of unburned carbon can be recovered. It was also found by SEM that, if CFA particles of 71–100 µm are used, alumosilicates on a carbon surface prevent complete interaction of diesel with carbon particles and decrease thereby carbon recovery to 83%.

Found

3 citations

Valeev Dmitrii

🥼 🤝

PhD in Engineering

50 publications, 766 citations, 1 419 reviews

h-index: 16

Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences

Research interests

Alumina

1 citation

Pak Alexander

🥼 🤝

DSc in Engineering

109 publications, 578 citations, 4 reviews

h-index: 12

National Research Tomsk Polytechnic University

Electric arc synthesis

Highly entropic materials

Materials Science

Plasma waste disposal

Vacuum-free plasma synthesis

1 citation

Nikitin Dmitriy

🤝

PhD in Engineering

59 publications, 350 citations, 29 reviews

h-index: 12

National Research Tomsk Polytechnic University

Mechanical properties of materials

Nanomaterials

Nanotechnology

Plasma chemistry

X-ray diffraction analysis

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GOST |

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GOST Copy

Valeev D. et al. Magnetite and Carbon Extraction from Coal Fly Ash Using Magnetic Separation and Flotation Methods // Minerals. 2019. Vol. 9. No. 5. p. 320.

GOST all authors (up to 50) Copy

Valeev D., Kunilova I., Alpatov A., Varnavskaya A., Ju D. Magnetite and Carbon Extraction from Coal Fly Ash Using Magnetic Separation and Flotation Methods // Minerals. 2019. Vol. 9. No. 5. p. 320.

RIS |

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RIS Copy

TY - JOUR

DO - 10.3390/min9050320

UR - https://www.mdpi.com/2075-163X/9/5/320

TI - Magnetite and Carbon Extraction from Coal Fly Ash Using Magnetic Separation and Flotation Methods

T2 - Minerals

AU - Valeev, Dmitry

AU - Kunilova, Irina

AU - Alpatov, Alexander

AU - Varnavskaya, Alika

AU - Ju, Dianchun

PY - 2019

DA - 2019/05/25

PB - MDPI

SP - 320

IS - 5

VL - 9

SN - 2075-163X

ER -

BibTex |

Cite this

BibTex (up to 50 authors) Copy

@article{2019_Valeev,

author = {Dmitry Valeev and Irina Kunilova and Alexander Alpatov and Alika Varnavskaya and Dianchun Ju},

title = {Magnetite and Carbon Extraction from Coal Fly Ash Using Magnetic Separation and Flotation Methods},

journal = {Minerals},

year = {2019},

volume = {9},

publisher = {MDPI},

month = {may},

url = {https://www.mdpi.com/2075-163X/9/5/320},

number = {5},

pages = {320},

doi = {10.3390/min9050320}

}

MLA

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MLA Copy

Valeev, Dmitry, et al. “Magnetite and Carbon Extraction from Coal Fly Ash Using Magnetic Separation and Flotation Methods.” Minerals, vol. 9, no. 5, May. 2019, p. 320. https://www.mdpi.com/2075-163X/9/5/320.

Publisher

MDPI

Journal

Minerals

scimago Q2

wos Q2

SJR

0.545

CiteScore

4.4

Impact factor

2.2

ISSN

2075163X (Electronic)

Profiles

Dmitrii V Valeev