Microwave heating characteristics of magnetite ore

Ramaraghavulu Rajavaram; Jaehong Lee; Joon Seok Oh; Han Gyeol Kim; Joonho Lee

doi:10.1007/s12540-016-6045-2

Microwave heating characteristics of magnetite ore

Ramaraghavulu Rajavaram, Jaehong Lee, Joon Seok Oh, Han Gyeol Kim, Joonho Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The heating characteristics of magnetite ore under microwave irradiation were investigated as a function of incident microwave power, particle size, and magnetite ore mass. The results showed that the heating rate of magnetite ore is highly dependent on microwave power and magnetite ore mass. The maximum heating rate was obtained at a microwave irradiation power of 1.70 kW with a mass of 25 g and particle size between 53-75 µm. The volumetric heating rate of magnetite ore was investigated by measuring the temperature at different depths during microwave irradiation. Microwave irradiation resulted in modification of the microstructure of the magnetite ore, but new phases such as FeO or Fe₂O₃ were not formed. In addition, the crystal size decreased from 115 nm to 63 nm after microwave irradiation up to 1573 K.

Original language	English
Pages (from-to)	1116-1120
Number of pages	5
Journal	Metals and Materials International
Volume	22
Issue number	6
DOIs	https://doi.org/10.1007/s12540-016-6045-2
Publication status	Published - 2016 Nov 1

Keywords

X-ray diffraction
magnetite ore
microstructure
microwave irradiation
oxides

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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10.1007/s12540-016-6045-2

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title = "Microwave heating characteristics of magnetite ore",

abstract = "The heating characteristics of magnetite ore under microwave irradiation were investigated as a function of incident microwave power, particle size, and magnetite ore mass. The results showed that the heating rate of magnetite ore is highly dependent on microwave power and magnetite ore mass. The maximum heating rate was obtained at a microwave irradiation power of 1.70 kW with a mass of 25 g and particle size between 53-75 µm. The volumetric heating rate of magnetite ore was investigated by measuring the temperature at different depths during microwave irradiation. Microwave irradiation resulted in modification of the microstructure of the magnetite ore, but new phases such as FeO or Fe2O3 were not formed. In addition, the crystal size decreased from 115 nm to 63 nm after microwave irradiation up to 1573 K.",

keywords = "X-ray diffraction, magnetite ore, microstructure, microwave irradiation, oxides",

author = "Ramaraghavulu Rajavaram and Jaehong Lee and Oh, {Joon Seok} and Kim, {Han Gyeol} and Joonho Lee",

note = "Publisher Copyright: {\textcopyright} 2016, The Korean Institute of Metals and Materials and Springer Science+Business Media Dordrecht.",

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T1 - Microwave heating characteristics of magnetite ore

AU - Rajavaram, Ramaraghavulu

AU - Lee, Jaehong

AU - Oh, Joon Seok

AU - Kim, Han Gyeol

AU - Lee, Joonho

PY - 2016/11/1

Y1 - 2016/11/1

N2 - The heating characteristics of magnetite ore under microwave irradiation were investigated as a function of incident microwave power, particle size, and magnetite ore mass. The results showed that the heating rate of magnetite ore is highly dependent on microwave power and magnetite ore mass. The maximum heating rate was obtained at a microwave irradiation power of 1.70 kW with a mass of 25 g and particle size between 53-75 µm. The volumetric heating rate of magnetite ore was investigated by measuring the temperature at different depths during microwave irradiation. Microwave irradiation resulted in modification of the microstructure of the magnetite ore, but new phases such as FeO or Fe2O3 were not formed. In addition, the crystal size decreased from 115 nm to 63 nm after microwave irradiation up to 1573 K.

AB - The heating characteristics of magnetite ore under microwave irradiation were investigated as a function of incident microwave power, particle size, and magnetite ore mass. The results showed that the heating rate of magnetite ore is highly dependent on microwave power and magnetite ore mass. The maximum heating rate was obtained at a microwave irradiation power of 1.70 kW with a mass of 25 g and particle size between 53-75 µm. The volumetric heating rate of magnetite ore was investigated by measuring the temperature at different depths during microwave irradiation. Microwave irradiation resulted in modification of the microstructure of the magnetite ore, but new phases such as FeO or Fe2O3 were not formed. In addition, the crystal size decreased from 115 nm to 63 nm after microwave irradiation up to 1573 K.

KW - X-ray diffraction

KW - magnetite ore

KW - microstructure

KW - microwave irradiation

KW - oxides

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DO - 10.1007/s12540-016-6045-2

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SN - 1598-9623

VL - 22

SP - 1116

EP - 1120

JO - Metals and Materials International

JF - Metals and Materials International

IS - 6

ER -

Microwave heating characteristics of magnetite ore

Abstract

Keywords

ASJC Scopus subject areas

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