Influence of quartz particles on wear in vertical roller mills.: Part I: Quartz concentration

Lucas R.D. Jensen; Henrik Friis; Erling Fundal; Per Møller; Per B. Brockhoff; Mads Jespersen

doi:10.1016/j.mineng.2009.11.014

Influence of quartz particles on wear in vertical roller mills. Part I: Quartz concentration

Lucas R.D. Jensen, Henrik Friis, Erling Fundal, Per Møller, Per B. Brockhoff, Mads Jespersen

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The standard closed circuit comminution process commonly employed in industrial vertical roller mills has been analyzed to determine the influence of typical abrasive minerals on wear rates. With the main focus on raw mixes used in cement plants, synthetic mixtures imitating were prepared. Using statistical planning, a total of 10 tests were arried out with two different limestones and one type of quartz sand. The size distributions were kept constant and only the mixing ratios were varied. It appears from the investigation that mixtures consisting of minerals with different grindabilities result in an increased concentration of abrasive particles in the grinding bed ðR2 > 0:99Þ. The present study shows that the quartz concentration in the grinding bed is determining the wear rate.

Original language	English
Journal	Minerals Engineering
Volume	23
Issue number	5
Pages (from-to)	390-398
ISSN	0892-6875
DOIs	https://doi.org/10.1016/j.mineng.2009.11.014
Publication status	Published - 2010

Keywords

Particle size
Limestones
Comminution
Wear mechanisms
Quartz
Vertical roller mills
Wear

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10.1016/j.mineng.2009.11.014

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Cite this

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title = "Influence of quartz particles on wear in vertical roller mills.: Part I: Quartz concentration",

abstract = "The standard closed circuit comminution process commonly employed in industrial vertical roller mills has been analyzed to determine the influence of typical abrasive minerals on wear rates. With the main focus on raw mixes used in cement plants, synthetic mixtures imitating were prepared. Using statistical planning, a total of 10 tests were arried out with two different limestones and one type of quartz sand. The size distributions were kept constant and only the mixing ratios were varied. It appears from the investigation that mixtures consisting of minerals with different grindabilities result in an increased concentration of abrasive particles in the grinding bed {\dh}R2 > 0:99{\TH}. The present study shows that the quartz concentration in the grinding bed is determining the wear rate.",

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AU - Jensen, Lucas R.D.

AU - Friis, Henrik

AU - Fundal, Erling

AU - Møller, Per

AU - Brockhoff, Per B.

AU - Jespersen, Mads

PY - 2010

Y1 - 2010

N2 - The standard closed circuit comminution process commonly employed in industrial vertical roller mills has been analyzed to determine the influence of typical abrasive minerals on wear rates. With the main focus on raw mixes used in cement plants, synthetic mixtures imitating were prepared. Using statistical planning, a total of 10 tests were arried out with two different limestones and one type of quartz sand. The size distributions were kept constant and only the mixing ratios were varied. It appears from the investigation that mixtures consisting of minerals with different grindabilities result in an increased concentration of abrasive particles in the grinding bed ðR2 > 0:99Þ. The present study shows that the quartz concentration in the grinding bed is determining the wear rate.

AB - The standard closed circuit comminution process commonly employed in industrial vertical roller mills has been analyzed to determine the influence of typical abrasive minerals on wear rates. With the main focus on raw mixes used in cement plants, synthetic mixtures imitating were prepared. Using statistical planning, a total of 10 tests were arried out with two different limestones and one type of quartz sand. The size distributions were kept constant and only the mixing ratios were varied. It appears from the investigation that mixtures consisting of minerals with different grindabilities result in an increased concentration of abrasive particles in the grinding bed ðR2 > 0:99Þ. The present study shows that the quartz concentration in the grinding bed is determining the wear rate.

KW - Particle size

KW - Limestones

KW - Comminution

KW - Wear mechanisms

KW - Quartz

KW - Vertical roller mills

KW - Wear

U2 - 10.1016/j.mineng.2009.11.014

DO - 10.1016/j.mineng.2009.11.014

M3 - Journal article

SN - 0892-6875

VL - 23

SP - 390

EP - 398

JO - Minerals Engineering

JF - Minerals Engineering

IS - 5