MEASUREMENT OF FLAME SPEED IN COPPER CONCENTRATE CLOUDS

More than 50% of the world primary copper is produced by Flash Smelting technology [1], which partially burns copper concentrate particles. It has proved to be superior to other processes because of its low fuel consumption, reduced fugitive-emissions and high production rate. Despite of all these a...

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Autores principales:	GONZÁLEZ,ORELVIS, RICHARDS,JUAN FRANCISCO, RIVERA,JUAN DE DIOS
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2006
Materias:	Particle combustion copper concentrate combustion flame speed
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072006000200007
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spelling	oai:scielo:S0717-970720060002000072006-06-30MEASUREMENT OF FLAME SPEED IN COPPER CONCENTRATE CLOUDSGONZÁLEZ,ORELVISRICHARDS,JUAN FRANCISCORIVERA,JUAN DE DIOS Particle combustion copper concentrate combustion flame speed More than 50% of the world primary copper is produced by Flash Smelting technology [1], which partially burns copper concentrate particles. It has proved to be superior to other processes because of its low fuel consumption, reduced fugitive-emissions and high production rate. Despite of all these advantages, Flash Smelting presents some operational problems, the most important being the control of magnetite formation and dust loss in the off-gases. The control of these variables is difficult due to poor understanding of the complex interactions between the processes involved, such as thermodynamics, chemical kinetics, mass and heat transfer, local distribution of oxygen concentration, and fluid-flow conditions. One practical tool to understand these complex interactions is the study of flame propagation in the Copper Concentrate (CC) cloud. In this work we developed an experimental method to estimate the velocity of the flame propagation in a CC cloud. We performed measurements in a vertical burner using rich mixtures, which showed that flame speed is inversely proportional to particle size and CC concentration. Also, the flame speed is mainly a function CC/oxygen mass ratio, independent of the oxygen dilution in the gas. In this moment, as a second part of this investigation, we are developing a mathematical model to predict flame speeds of the same order of magnitude and trend as the ones measured experimentally. The model includes heat generation and all modes of heat transfer i.e. conduction, convection, and radiationinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.51 n.2 20062006-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072006000200007en10.4067/S0717-97072006000200007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Particle combustion copper concentrate combustion flame speed
spellingShingle	Particle combustion copper concentrate combustion flame speed GONZÁLEZ,ORELVIS RICHARDS,JUAN FRANCISCO RIVERA,JUAN DE DIOS MEASUREMENT OF FLAME SPEED IN COPPER CONCENTRATE CLOUDS
description	More than 50% of the world primary copper is produced by Flash Smelting technology [1], which partially burns copper concentrate particles. It has proved to be superior to other processes because of its low fuel consumption, reduced fugitive-emissions and high production rate. Despite of all these advantages, Flash Smelting presents some operational problems, the most important being the control of magnetite formation and dust loss in the off-gases. The control of these variables is difficult due to poor understanding of the complex interactions between the processes involved, such as thermodynamics, chemical kinetics, mass and heat transfer, local distribution of oxygen concentration, and fluid-flow conditions. One practical tool to understand these complex interactions is the study of flame propagation in the Copper Concentrate (CC) cloud. In this work we developed an experimental method to estimate the velocity of the flame propagation in a CC cloud. We performed measurements in a vertical burner using rich mixtures, which showed that flame speed is inversely proportional to particle size and CC concentration. Also, the flame speed is mainly a function CC/oxygen mass ratio, independent of the oxygen dilution in the gas. In this moment, as a second part of this investigation, we are developing a mathematical model to predict flame speeds of the same order of magnitude and trend as the ones measured experimentally. The model includes heat generation and all modes of heat transfer i.e. conduction, convection, and radiation
author	GONZÁLEZ,ORELVIS RICHARDS,JUAN FRANCISCO RIVERA,JUAN DE DIOS
author_facet	GONZÁLEZ,ORELVIS RICHARDS,JUAN FRANCISCO RIVERA,JUAN DE DIOS
author_sort	GONZÁLEZ,ORELVIS
title	MEASUREMENT OF FLAME SPEED IN COPPER CONCENTRATE CLOUDS
title_short	MEASUREMENT OF FLAME SPEED IN COPPER CONCENTRATE CLOUDS
title_full	MEASUREMENT OF FLAME SPEED IN COPPER CONCENTRATE CLOUDS
title_fullStr	MEASUREMENT OF FLAME SPEED IN COPPER CONCENTRATE CLOUDS
title_full_unstemmed	MEASUREMENT OF FLAME SPEED IN COPPER CONCENTRATE CLOUDS
title_sort	measurement of flame speed in copper concentrate clouds
publisher	Sociedad Chilena de Química
publishDate	2006
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072006000200007
work_keys_str_mv	AT gonzalezorelvis measurementofflamespeedincopperconcentrateclouds AT richardsjuanfrancisco measurementofflamespeedincopperconcentrateclouds AT riverajuandedios measurementofflamespeedincopperconcentrateclouds
_version_	1718445360279453696

MEASUREMENT OF FLAME SPEED IN COPPER CONCENTRATE CLOUDS

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