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ORE PREPARATION
ArticleName Physical modeling in screw-toothed crushers design
DOI 10.17580/or.2018.03.02
ArticleAuthor Stepanenko A. I., Malkov S. M.
ArticleAuthorData

Gormashexport Ltd (Novosibirsk, Russia):
Stepanenko A. I., CEO, goraexport@mail.ru
Malkov S. M., Chief Designer, stmgk@mail.ru

Abstract

Crushers are usually designed with the use of the equations of Rittinger, Kick, Kirpichev, Bond, Svensson, etc. However, the first two laws have limitations on the grain size range, and the Bond law is an empirical dependence that may render significant errors in calculations. Due to the high degree of variability in crushability indicators available for the same rock types(depending on their composition and structure), certain data on energy intensity for the process and loads on operating components of the crushers may not always be strictly quantified through calculation. This article describes an applicable technique for physical modeling of the process with the use of an original pilot installation enabling collection of the basic data required for the design of industrial crushers. The peculiarity of the technique consists in the fact that all results obtained during the research maybe used in subsequent design work without scaling, since the pilot plant is essentially a segment of the industrial machine. This enables efficient prevention of errors and deviations associated with the selection of similarity criteria when moving from a model to the actual machine. The plant additionally enables the selection of the best tooth geometry and material. Special attention is paid to the major factors that determine the configuration of a crusher during its design. The applicability criteria for toothed screw crushers are considered. These criteria allow evaluating the performance of a specific crusher in the first approximation when selecting equipment for a given process task. Using the array of statistical data accumulated during decades-long laboratory studies of the crushing process for various materials, an estimate was made in the first approximation of the energy intensity of the toothed screw crushers designed.

keywords Toothed screw crusher, roller crusher, ore preparation, crushing, crusher configuration, physical modeling, design
References

1. Chanturiya V. А., Vaisberg L. A., Kozlov А. P. Promising trends in investigations aimed at all-round utilization of mineral raw materials. Obogashchenie Rud. 2014. No. 2. pp. 3–9.
2. Belov A. S. Application of screw-toothed crushers at kimberlite deposits. Obogashchenie Rud. 2016. No. 5. pp. 3–7.
3. Stepanenko A. I. Toothed-screw crushers in cycles of materials with a high clay content crushing. IX Congress of CIS countries mineral processors. Proceedings. Vol. II. Moscow: MISiS, 2013. pp. 560–564.
4. Gazaleeva G. I., Tsypin E. F., Chervyakov S. A. Ore preparation: crushing, screening, beneficiation. Ekaterinburg: Uralskiy tsentr akademicheskogo obsluzhivaniya, 2014. 912 p.
5. Andreev E. E., Tikhonov O. N. Crushing, grinding and preparation of raw materials for enrichment. St. Petersburg: SPGGI (TU) Publ., 2007. 440 p.
6. Senkus V.V. Ermakov A. Y. Mechanized crushing & screening plant. XVIII International Coal Preparation Congress. Switzerland, 2016. pp. 887–890.
7. Modelling and simulation of dynamic behaviour in crushing plants: Technical report No. 75. Göteborg (Sweden): Chalmers University of Technology, 2013. 66 р.
8. Taranov V. A., Baranov V. F., Aleksandrova T. N. Review of software tools for modeling and calculation of ore preparation flowsheets. Obogashchenie Rud. 2013. No. 5. pp. 3–7.
9. Wills B. A., Barley R. W. Mineral Processing at a Crossroads — Problems and Prospects. Dordrecht: Nijhoff. 1986. 429 p.
10. Workshop on mineral processing. Under ed. of N. G. Bedran’. Moscow: Nedra, 1991. 526 p.
11. King R. P. Modeling and simulation of mineral processing systems. Salt Lake City (USA): University of Utah, 2001. 415 р.
12. Stepanenko A. I. Toothed-screw crusher operational experience in ore preparation processes. Obogashchenie Rud. 2015. No. 1. pp. 10–13.
13. Stepanenko А. I. Toothed screw crushers in the processes of coal beneficiation. XVIII International Coal Preparation Congress. Switzerland, 2016. pp. 907–912.

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