Denzel et al 2025a - Revision history

http://www.colloquiam.com/wd/index.php?action=history&feed=atom&title=Denzel_et_al_2025a Denzel et al 2025a - Revision history 2026-05-11T10:58:02Z Revision history for this page on the wiki MediaWiki 1.27.0-wmf.10 http://www.colloquiam.com/wd/index.php?title=Denzel_et_al_2025a&diff=325148&oldid=prev Scipediacontent: Scipediacontent moved page Draft content 714892130 to Denzel et al 2025a 2025-10-15T08:13:20Z

<p>Scipediacontent moved page <a href="/public/Draft_content_714892130" class="mw-redirect" title="Draft content 714892130">Draft content 714892130</a> to <a href="/public/Denzel_et_al_2025a" title="Denzel et al 2025a">Denzel et al 2025a</a></p> <table class="diff diff-contentalign-left" data-mw="interface"> <tr style='vertical-align: top;' lang='en'> <td colspan='1' style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan='1' style="background-color: white; color:black; text-align: center;">Revision as of 08:13, 15 October 2025</td> </tr><tr><td colspan='2' style='text-align: center;' lang='en'><div class="mw-diff-empty">(No difference)</div> </td></tr></table>

Scipediacontent http://www.colloquiam.com/wd/index.php?title=Denzel_et_al_2025a&diff=325147&oldid=prev Scipediacontent at 08:13, 15 October 2025 2025-10-15T08:13:17Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;' lang='en'> <td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 08:13, 15 October 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l4" >Line 4:</td> <td colspan="2" class="diff-lineno">Line 4:</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Vertical stirred milling is a well-recognized technology for fine grinding applications in the mineral processing industry. It is increasingly used due to the higher energy efficiency compared to horizontal mills. Vertical arrangement leads to high grinding intensity and power draw in the bottom grinding chambers, thus bottom rotors may wear out more than upper rotors. Modelling power draw is of great interest proven by the effort in previous work. An analytical power model for this type of mills based on measurement data was developed by Heath et al. [1] and a particle-based approach was presented by Larsson et al. [2].</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Vertical stirred milling is a well-recognized technology for fine grinding applications in the mineral processing industry. It is increasingly used due to the higher energy efficiency compared to horizontal mills. Vertical arrangement leads to high grinding intensity and power draw in the bottom grinding chambers, thus bottom rotors may wear out more than upper rotors. Modelling power draw is of great interest proven by the effort in previous work. An analytical power model for this type of mills based on measurement data was developed by Heath et al. [1] and a particle-based approach was presented by Larsson et al. [2].</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>In this contribution a DEM model to determine the torque distribution along the shaft for every grinding compartment in a vertical stirred mill with castellated rotors [3] is presented. Different rotor configurations are evaluated, whereby the rotors vary in diameter, alignment and spacing. An optimized configuration with a combination of different rotors could be developed, which leads to a more even power distribution and a significant reduction of load on the bottom rotors. Simulations also reveal particle dynamics, which explain field experience in terms of wear. Furthermore, the influence of grinding media filling level on power draw is investigated. Higher filling levels increase power draw following an exponential trend. This model allows to optimize the rotor configuration along the shaft, which has a strong impact on rotor and liner wear, critically influencing operational costs</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>In this contribution a DEM model to determine the torque distribution along the shaft for every grinding compartment in a vertical stirred mill with castellated rotors [3] is presented. Different rotor configurations are evaluated, whereby the rotors vary in diameter, alignment and spacing. An optimized configuration with a combination of different rotors could be developed, which leads to a more even power distribution and a significant reduction of load on the bottom rotors. Simulations also reveal particle dynamics, which explain field experience in terms of wear. Furthermore, the influence of grinding media filling level on power draw is investigated. Higher filling levels increase power draw following an exponential trend. This model allows to optimize the rotor configuration along the shaft, which has a strong impact on rotor and liner wear, critically influencing operational costs</div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== Full Paper ==</ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><pdf>Media:Draft_content_714892130pap_237.pdf</pdf></ins></div></td></tr>  </table>

Scipediacontent http://www.colloquiam.com/wd/index.php?title=Denzel_et_al_2025a&diff=325145&oldid=prev Scipediacontent at 08:13, 15 October 2025 2025-10-15T08:13:15Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;' lang='en'> <td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 08:13, 15 October 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">                                </ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">==Abstract==</ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Vertical stirred milling is a well-recognized technology for fine grinding applications in the mineral processing industry. It is increasingly used due to the higher energy efficiency compared to horizontal mills. Vertical arrangement leads to high grinding intensity and power draw in the bottom grinding chambers, thus bottom rotors may wear out more than upper rotors. Modelling power draw is of great interest proven by the effort in previous work. An analytical power model for this type of mills based on measurement data was developed by Heath et al. [1] and a particle-based approach was presented by Larsson et al. [2].</ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">In this contribution a DEM model to determine the torque distribution along the shaft for every grinding compartment in a vertical stirred mill with castellated rotors [3] is presented. Different rotor configurations are evaluated, whereby the rotors vary in diameter, alignment and spacing. An optimized configuration with a combination of different rotors could be developed, which leads to a more even power distribution and a significant reduction of load on the bottom rotors. Simulations also reveal particle dynamics, which explain field experience in terms of wear. Furthermore, the influence of grinding media filling level on power draw is investigated. Higher filling levels increase power draw following an exponential trend. This model allows to optimize the rotor configuration along the shaft, which has a strong impact on rotor and liner wear, critically influencing operational costs</ins></div></td></tr>  </table>

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