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Metallurgical and Materials Transactions B
Published in: Metallurgical and Materials Transactions B 1/2018

14-11-2017

The Effect of Deposit Temperature on the Catalytic SO2-to-SO3 Conversion in a Copper Flash Smelting Heat Recovery Boiler

Authors: Juho Lehmusto, Emil Vainio, Tor Laurén, Mari Lindgren

Published in: Metallurgical and Materials Transactions B | Issue 1/2018

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Abstract

The aim of the work was to study the catalytic role of copper flash smelter deposit in the SO2-to-SO3 conversion. In addition, the effect of process gas temperature at 548 K to 1173 K (275 °C to 900 °C) on the amount of SO3 formed was addressed both in the absence and presence of genuine copper flash smelter deposit. The SO3 conversion rate changed as a function of process gas temperature, peaking at 1023 K (750 °C). A dramatic increase in the SO2-to-SO3 conversion was observed when process dust was present, clearly indicating that process dust catalyzes the SO2-to-SO3 conversion. Based on these results, the catalytic ability of the deposit may lead to sulfuric acid dew point corrosion.
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Metadata
Title
The Effect of Deposit Temperature on the Catalytic SO2-to-SO3 Conversion in a Copper Flash Smelting Heat Recovery Boiler
Authors
Juho Lehmusto
Emil Vainio
Tor Laurén
Mari Lindgren
Publication date
14-11-2017
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 1/2018
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-017-1130-6

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