Digitising the wet grinding process / Norbert Kern in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4645 (10/2018)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4645 (10/2018) . - p. 37-38 Titre : Digitising the wet grinding process Type de document : texte imprimé Auteurs : Norbert Kern, Auteur Année de publication : 2018 Article en page(s) : p. 37-38 Langues : Anglais (eng) Catégories : Analyse des données Broyage par voie humide Broyeurs à billes Commande de processus Logiciels Procédés de fabrication Technique de la production Index. décimale : 667.9 Revêtements et enduits Résumé : The quality requirements for inks or functional coatings have clearly increased over recent years. In response, many manufacturers are operating their wet grinding systems with increasingly smaller grinding beads and maximum power input within the limits of their capacities. To help them be able to produce sustainably and safely at this level, the author reports from Bühler, on how it is launching digital services over the next few years, which can be used to optimise the production process beyond machinery and site limitations. Note de contenu : - Process data made available from anywhere - Useful statistics open potential for optimisation - Smart algorithms monitor and optimise the process - FIGURES : The future of the wet grinding industry - Cockpit views with mid- and longterm statistics - Easy traceability of production via key performance indicators - Internal machine benchmarking - Production module with MacroMedia TM pre-dispersing unit and MicroMedia+TM bead mill En ligne : https://drive.google.com/file/d/1-fO0kT924VkeN7H9a_t56HtIiywWAHU9/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31254 [article]

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A finer route to finer particles / Cornel Mendler in EUROPEAN COATINGS JOURNAL (ECJ), N° 2 (02/2013)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 2 (02/2013) . - p. 16-20 Titre : A finer route to finer particles : Designing milling systems to reduce total cost of ownership Type de document : texte imprimé Auteurs : Cornel Mendler, Auteur ; Norbert Kern, Auteur Année de publication : 2013 Article en page(s) : p. 16-20 Langues : Anglais (eng) Catégories : Automatisation Coût -- Contrôle Fragmentation Pigments Production -- Planification Technique de la production Temps de cycle (production) -- Réduction Index. décimale : 667.9 Revêtements et enduits Résumé : Ways to minimise the total costs of a pigment dispersion plant are discussed in relation to both overall planning and mill design. Automated production lines can reduce labour costs while improving product consistency. Efficient milling today requires the use of very fine beads. A new mill handles these efficiently, reducing both production times and energy input. Note de contenu : - Efficient production systems reduce labour costs - The four key steps in planning a new plant - Grinding bead parameters and their significance - New mill design improves handling of smallest beads - Scalability helps ensure consistent production - Significance of the specific energy concept - Production and facility costs can both be reduced - Worldwide planning facilities are available En ligne : https://drive.google.com/file/d/1KVKSOEXa4Ogh2zNLr77QwOHv6N6XJEti/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17409 [article]

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Milling tailored to its task / Norbert Kern in EUROPEAN COATINGS JOURNAL (ECJ), N° 9 (09/2017)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9 (09/2017) . - p. 40-44 Titre : Milling tailored to its task : Pre-dispersion improves product quality and reduces costs Type de document : texte imprimé Auteurs : Norbert Kern, Auteur Année de publication : 2017 Article en page(s) : p. 40-44 Langues : Anglais (eng) Catégories : Broyage par voie humide Broyeurs à billes Encre Pigments Procédés de fabrication Index. décimale : 667.9 Revêtements et enduits Résumé : In four practical examples it is shown that the use of a pre-dispersion step can increase the efficiency of fine grinding by up to 50%. With effective pre-dispersion it can be possible to use finer grinding beads to improve pigment grinding, quality and energy consumption. Note de contenu : - Higher productivity in manufacturing packaging inks - Removing contaminants improves textile ink milling - Process safety enhanced in agrochemical production - Printing ink quality improved - Why smaller beads give finer results - Bead sizes can be optimised to specific processes - FIGURES : 1. Typical grinding beads : yttrium-stabilised ZrO2 beads with a diameter of 0.8 mm - 2. Solids dosing during recirculation - 3. Example of a compact process solution for pre-dispersion and fine grinding - 4. Agitated bead mill for use with micro-grinding beads En ligne : https://drive.google.com/file/d/13ztcWUgWuwC0Yi8pj3CdN48svAIPI7qA/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29036 [article]

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Optimising the wet grinding process / Norbert Kern in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2016)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 6 (06/2016) . - p. 46-51 Titre : Optimising the wet grinding process : How products, beads and machine design interact in bead mill operation Type de document : texte imprimé Auteurs : Norbert Kern, Auteur Année de publication : 2016 Article en page(s) : p. 46-51 Langues : Anglais (eng) Catégories : Broyeurs à billes Fragmentation Technique de la production Index. décimale : 667.9 Revêtements et enduits Résumé : Wet grinding in bead mills is a key process step in the production of coatings. Factors affecting product quality and productivity are discussed. It is shown that significant improvements may be obtainable by coordinating the size, density and quality of the grinding beads used to the product and mill type. Note de contenu : - How colour properties are linked to dispersion - Full volume bead mills need large grinding beads - Smaller beads in a different mill improve efficiency - Why bead quality is an important factor - Top quality beads may not always be needed - Beads and materials exactly matched to the product - FIGURES : 1. Simplified schematic of a full volume bead mill process chamber - 2. Simplified schematic of annular gap mill process chamber - 3. Grinding beads are supplied in a very wide range of sizes, shown here enlarged for comparison purposes - TABLE : How bead density and diameter are related to product viscosity for efficient milling (guidelines only : energy input and local shear rate in the mill may change viscosity significantly). En ligne : https://drive.google.com/file/d/1pC1-auhnTVRWttz8cY3uAFNrlyonbg5a/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26463 [article]

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Particle size - old question with new answers / Norbert Kern in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2020)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 3 (03/2020) . - p. 46-52 Titre : Particle size - old question with new answers : So what comes next for grinding technology ? Is the industry ready for digitisation ? Type de document : texte imprimé Auteurs : Norbert Kern, Auteur Année de publication : 2020 Article en page(s) : p. 46-52 Langues : Anglais (eng) Catégories : Broyage par voie humide Procédés de fabrication Taille des particules Index. décimale : 667.9 Revêtements et enduits Résumé : Wet grinding as a process has been around for hundreds of years, with technology constantly refining what's opssible in terms of efficiency and quality. 2020 sees the introduction of a step-change in technology that arguably takes the industry to the limits of the physics of what's possible. But that's not the end of the story ; a new digital horizon could continue to drive progress for the next decade. Note de contenu : - The 5 fundamentals of wet grinding - 1. Uniform particle distribution is the ultimate goal - 2. Different material types require different amounts of energy - 3. Different forces are required to reduce sizes in different materials - 4. Target properties require different approaches - 5. The smaller the beads, the more efficient the process - The history of wet milling - A step change in technology for 2020 - 1. New technology enables even smaller beads - 2. Introduction higher flow rates - Entry-level dashboards to improve decision-making - Next level statistics and insights - The ultimate goal - Smart algorithms to minitor and optimise the process - Fig. 1 : Energy requirement for differents materials - Fig. 2 : The forces at work in wet grinding - Fig. 3 : Using wet grinding to create transparent dispersion - Fig. 4 : the number of beads in a unit volume - Fig. 5 : Number of beads in a given volume as a function bead size - Fig. 6 : Bühler's new design for the 'MicroMedia Invicta'. - Fig. 7 : Process improvements using the new technology - Fig. 8 : A digital dashboard gives operators and managers better control En ligne : https://drive.google.com/file/d/1s_rJ0H2nAwZk3aW3BRCtQ10-rWZI3udB/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33898 [article]

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Wet grinding process steps determine quality / Norbert Kern in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4622 (07/2016)  

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