Mathematical model for determining the number of stop blocks on the roll of a single-roll crushing machine
https://doi.org/10.17073/0368-0797-2021-12-909-911
Abstract
The wellknown energyefficient method of crushing in a singleroll crushing machine with smooth rolls, in which a complex stress state is created in the destroyed piece, has a significant disadvantage – low productivity due to a limited degree of crushing. In order to increase productivity, singleroll crushing machines are equipped with stop blocks on the roll, which ensure the forced supply of the destroyed material to the crushing zone. The maximum possible number of stop blocks should be installed on the roll, and the condition of guaranteed feeding of the piece into the fracture zone must be met. The developed mathematical model allows one to calculate the maximum possible number of stop blocks, which ensures guaranteed nipping of the original piece into the destruction zone.
About the Authors
A. G. NikitinRussian Federation
Aleksandr G. Nikitin, Dr. Sci. (Eng.), Prof. of the Chair of Mechanics and Mechanical Engineering
42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007
Yu. A. Epifantsev
Russian Federation
Yurii A. Epifantsev, Cand. Sci. (Eng.), Assist. Prof. of the Chair of Mechanics and Mechanical Engineering
42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007
K. S. Medvedeva
Russian Federation
Kseniya S. Medvedeva, Cand. Sci. (Eng.), Assist. Prof. of the Chair of Mechanics and Mechanical Engineering
42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007
References
1. Austin L.G., Van Orden D., Pérez J.W. A preliminary analysis of smooth roll crushers. International Journal of Mineral Processing. 1980, vol. 6, no. 4, pp. 321–336. https://doi.org/10.1016/0301-7516(80)90028-9
2. Egbe E.A.P., Olugboji O.A. Design, fabrication and testing of a double roll crusher. International Journal of Engineering Trends and Technology (IJETT). 2016, vol. 35, no. 11, pp. 511–515. https://doi.org/10.14445/22315381/IJETT-V35P303
3. Zhao L.L., Wang Z.B., Zang F. Multiobject optimization design for differential and grading toothed roll crusher using a genetic algorithm. Journal of China University of Mining and Technology. 2008, vol. 18, no. 2, pp. 316–320. https://doi.org/10.1016/S1006-1266(08)60067-X
4. Rogers R.S.C. Closed form analytical solutions for models of closed circuit roll crushers. Powder Technology. 1982, vol. 32, no. 1, pp. 125–127. https://doi.org/10.1016/0032-5910(82)85013-4
5. Maslennikov V.A. Compression crushers. Izvestiya vuzov. Gornyi zhurnal. 1996, no. 1011, pp. 124–138. (In Russ.).
6. Sakharov D.F. Analysis of the process of crushing brittle materials in a singleroll crusher in order to increase energy efficiency: Extended Abstract of Cand. Sci. Diss. Novokuznetsk, 2011, 17 p. (In Russ.).
7. Nikitin A.G., Epifantsev Yu.A., Medvedeva K.S., Gerike P.B. Power analysis of the process of brittle materials destruction in universal crushing machine with roll locker. Izvestiya. Ferrous Metallurgy. 2019, vol. 62, no. 4, pp. 303–307. (In Russ.). https://doi.org/10.17073/0368-0797-2019-4-303-307
8. Meriam J.L., Kraige L.G. Engineering Mechanics. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012, 550 р.
9. Tselikov A.I. Machines and Units of Metallurgical Plants. Vol. 1. Moscow: Mashinostroenie, 1987, 440 p. (In Russ.).
10. Nikitin A.G., Epifantsev Yu.A., Medvedeva K.S., Gerike P.B., Fastykovskii A.R. Experimental study of fractional composition of pieces of brittle material during crushing in a single-roll crusher with block stop on the roll. Izvestiya. Ferrous Metallurgy. 2020, vol. 63, no. 7, pр. 554–559. (In Russ.). https://doi.org/10.17073/0368-0797-2020-7-554-559
Review
For citations:
Nikitin A.G., Epifantsev Yu.A., Medvedeva K.S. Mathematical model for determining the number of stop blocks on the roll of a single-roll crushing machine. Izvestiya. Ferrous Metallurgy. 2021;64(12):909-911. (In Russ.) https://doi.org/10.17073/0368-0797-2021-12-909-911