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Bulgur milling using roller, double disc and vertical disc mills
Journal of Food Engineering, 2007Abstract In the present study, roller, double disc and vertical disc mills were used to determine their effects on the quality of bulgur (surface characteristics, shape, dimension (x, y, z), particle volume (V), bulk density, one-thousand particles weight and size).
Mustafa Bayram
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Drive systems for vertical roller mills
2017 IEEE-IAS/PCA Cement Industry Technical Conference, 2017Capacity of cement new production lines has steadily increased over the last years. Reduction of investment costs is one of the most important driving factors for this trend. Because of simple scalability and low energy consumption, the vertical roller mill is a key part for single mill cement lines.
Martin Baechler +2 more
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Vertical Rolling Mill's Twist Vibration
2008 International Conference on Computer Science and Software Engineering, 2008This paper studies the twist vibration of the branch closed system in the main transmission system of the vertical rolling mill, by means of the method of the theory and measurement, reason of negative moment of two roller in rolling steel is found. The research result shows that the theoretical calculation is consistent with the spot measurement.
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Operational results of vertical mill conversions
Cement Industry Technical Conference, 2003. Conference Record. IEEE-IAS/PCA 2003, 2003An innovative concept has been developed to optimize internal gas velocities of vertical roller mills and, thereby, result in significant power savings. This method for converting existing vertical mills results in higher grinding efficiencies through the conversion of traditional static and dynamic classifiers to a high efficiency, custom designed ...
G.R. Roy, J.W. Terembula
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Heat transfer in vertical perl mills
Bioprocess Engineering, 1995A model of heat transfer during grinding in vertical multi-disk perl mills has been proposed. Heat transfer intensity in such mills depends on thermal resistance in a boundary layer formed at the inner surface of mill tank wall. The layer thickness changes depending on process variables.
A. Heim, T. Maliszewski
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Semi-autogenous grinding mill pebbles as a vertically stirred mill medium
Separation Science and Technology, 2019Semi-autogenous grinding pebbles were used as a grinding medium and compared to steel balls in terms of their effect the flotation behavior of the products and their industrial application.
Caibin Wu +5 more
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Vibration Analysis of a Vertical Roller Mill: Modeling and Validation
Volume 2: Dynamics, Vibration and Control; Energy; Fluids Engineering; Micro and Nano Manufacturing, 2014In this paper, vibration characteristics of a Vertical Roller Mill (VRM) are studied by using physical parameters of an operating VRM. The mathematical model is derived and simulated for a set of working parameters. Mechanical properties of the grinding material and the physical properties of the mechanical construction are used in the vibration model ...
SALAMCİ, METİN UYMAZ +2 more
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A new gearbox generation for vertical roller mills
IEEE Cement Industry Technical Conference, 2006. Conference Record., 2006Drive trains of vertical roller mills are usually equipped with heavy duty gearboxes with a horizontal input shaft and a vertical output shaft. Increasing mill sizes bring the existing gearbox concepts to their limits, however. This, and the demand for higher reliability and lower costs, has forced gearbox manufactures to develop new gearbox concepts ...
R. Raeber, U. Weller, R. Amato
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What’s Up with Vertical Mill Drives?
2019 IEEE-IAS/PCA Cement Industry Conference (IAS/PCA), 2019Drive systems for large vertical mills have proven to be a reliability issue for many cement producers. As mill sizes have increased over time the size of the motors and corresponding gear boxes have increased as well. The lack of reliability of these large and expensive drive sets has led to two outcomes; equipment suppliers have worked diligently to ...
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On fault feature extraction and diagnosis of vertical mill
Engineering Research Express, 2020Abstract In order to solve the problems of complicated fault diagnosis and poor fault diagnosis of vertical mill operation, this paper proposes a diagnostic method based on fisher and information entropy difference classification. By extracting the fault feature of the anomaly attribute–the maximum value of the attribute, and the ...
Bo Xu, Yongjian Sun
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