Modeling of microwave heating of andesite and minerals

被引：50

作者：

Lovas, Michal ^{[1
]}

Kovacova, Milota ^{[1
]}

Dimitrakis, Georgios ^{[2
]}

Cuvanova, Silvia ^{[1
]}

Znamenackova, Ingrid ^{[1
]}

Jakabsky, Stefan ^{[1
]}

机构：

[1] Slovak Acad Sci, Inst Geotech, Kosice 04353, Slovakia

[2] Univ Nottingham, Dept Chem & Environm Engn, Natl Ctr Ind Microwave Proc, Nottingham NG7 2RD, England

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2010年 / 53卷 / 17-18期

关键词：

Microwave heating; Permittivity; Andesite; Sulphides; Carbonates;

D O I：

10.1016/j.ijheatmasstransfer.2010.03.012

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The behaviour of samples studied in an electric field at microwave frequency is characterised by the real and imaginary part of complex dielectric permittivity. Knowledge of these parameters permits us to predict the running of microwave heating. The article describes the influence of temperature on the change of real and imaginary permittivity of andesite, sulphide and carbonate samples at the frequency of 2216 MHz. The permittivity was measured by the resonant cavity method. The heat and Maxwell's equations were simultaneously solved using the COMSOL MULTIPHYSICS programme to predict and visualize the temperature rise in the samples exposed to microwave radiation. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3387 / 3393

页数：7

共 11 条

[1] Thermal and XRD analysis of Egyptian galena [J].

Abdel-Rehim, A. M. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2006, 86 (02) :393-401

[2] Heat transfer phenomena during processing materials with microwave energy [J].

Acierno, D ;

Barba, AA ;

d'Amore, M .

HEAT AND MASS TRANSFER, 2004, 40 (05) :413-420

[3] Quantitative determination of pyrite in, ceramic clay raw materials by DTA [J].

Corradi, AB ;

Leonelli, C ;

Manfredini, T ;

Pennisi, L ;

Romagnoli, M .

THERMOCHIMICA ACTA, 1996, 287 (01) :101-109

[4] Microwave heating behaviour of nickeliferous limonitic. laterite ores [J].

Pickles, CA .

MINERALS ENGINEERING, 2004, 17 (06) :775-784

[5] Modelling of microwave heating of foodstuff: study on the influence of sample dimensions with a FEM approach [J].

Romano, VR ;

Marra, F ;

Tammaro, U .

JOURNAL OF FOOD ENGINEERING, 2005, 71 (03) :233-241

[6]

Sahyoun C., 2003, PHYS SEPERATION SCI, V12, P23, DOI DOI 10.1080/1478647031000101296

[7]

Todor D.N., 1976, THERMAL ANAL MINERAL

[8] Thermal runaway in microwave heating:: a mathematical analysis [J].

Vriezinga, CA ;

Sánchez-Pedreño, S ;

Grasman, J .

APPLIED MATHEMATICAL MODELLING, 2002, 26 (11) :1029-1038

[9] Application of numerical modelling for prediction of the influence of power density on microwave-assisted breakage [J].

Whittles, DN ;

Kingman, SW ;

Reddish, DJ .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2003, 68 (1-4) :71-91

[10] Comparison of temperature distribution in model food cylinders based on Maxwell's equations and Lambert's law during pulsed microwave heating [J].

Yang, HW ;

Gunasekaran, S .

JOURNAL OF FOOD ENGINEERING, 2004, 64 (04) :445-453

← 1 2 →