Measuring and Reporting Fly Ash Resistivity

Estcourt, V. F.; Frisch, Norman W.

doi:10.1109/tpas.1980.319703

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Cited by 6 publications

(3 citation statements)

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“…It is influenced by a number of important variables, beginning at the coal mine and extending through the pulverizers, boiler furnace, and up to flue gas conditions at the precipitator inlet [11]. As for itself, the main factors include chemical composition, temperature and size distribution.…”

Section: Previous Studiesmentioning

confidence: 99%

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Experimental study on fly ash resistivity at temperatures above 673 K

Zhang

2014

Fuel

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Section: Previous Studiesmentioning

confidence: 99%

“…The researches on fly ash electrical characteristics have been studied a lot, but most of them aim at the temperature below 723 K [7,11,16,17]. As none experimental value is measured at high temperature, more effort is needed in achieving experimental results of fly ash resistivity at high temperature.…”

Section: Previous Studiesmentioning

confidence: 99%

Experimental study on fly ash resistivity at temperatures above 673 K

Zhang

2014

Fuel

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“…The coarser fraction, which contains a lower percentage of coal, is then processed in a classical roll-type electrostatic separator, which takes advantage of the difference of electric resistivity [10] between the unburned coal, which is a good conductor, and the ash particles, which are non-conductors.…”

Section: Introductionmentioning

confidence: 99%

Corona Separation of Fly Ash

Das¹,

Köhnlechner²,

Aman³

et al. 2007

2007 IEEE Industry Applications Annual Meeting

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The possibility of converting fly-ash waste into a raw material for cement industry and other applications justify the investigation of new beneficiation techniques, including those using electrostatic forces. The aim of this paper was to demonstrate the effectiveness of a modified roll-type corona separator in the processing of this material. Three different laboratory models of such separators were evaluated. The analysis of the experimental results pointed out the main problems that should be solved prior to the industry application of corona separators for fly-ash beneficiation. A numerical model of fly-ash behaviour in roll-type corona separators enabled a thorough examination of the factors that influence the efficiency of the process and should be considered in the final design.

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