Determination of carbon in fly ash from microwave attenuation and phase shift

Determination of carbon in fly ash from microwave attenuation and phase shift

PCT No. PCT/AU89/00413 Sec. 371 Date Mar. 5, 1991 Sec. 102(e) Date Mar. 5, 1991 PCT Filed Sep. 26, 1989 PCT Pub. No. WO90/03568 PCT Pub. Date Apr. 5, 1990.In the determination of the unburnt carbon content of fly ash, a microwave signal is transmitted through or reflected from a fly ash sample and t...

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Hauptverfasser: CUTMORE, NICHOLAS G
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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NICHOLAS G
description PCT No. PCT/AU89/00413 Sec. 371 Date Mar. 5, 1991 Sec. 102(e) Date Mar. 5, 1991 PCT Filed Sep. 26, 1989 PCT Pub. No. WO90/03568 PCT Pub. Date Apr. 5, 1990.In the determination of the unburnt carbon content of fly ash, a microwave signal is transmitted through or reflected from a fly ash sample and the attenuation and phase shift of the transmitted or reflected signal from receiver antenna or circulator respectively, is determined with respect to the incident signal and used to provide a measure of unburnt carbon content. The invention is applicable to measurement of fly ash samples taken from a boiler outlet duct or for direct measurement of the unburnt carbon content of fly ash entrained in flue gas.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title Determination of carbon in fly ash from microwave attenuation and phase shift
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