Investigation of the dust formation process when hoisting the uranium ores with a bucket
M. Stupnik1, V. Kalinichenko1, M. Fedko1, O. Kalinichenko1, V. Pukhalskyi2, B. Kryvokhin2
1Kryvyi Rih National University, Kryvyi Rih, Ukraine
2SE “Eastern Ore Dressing Complex” (SE “VostGOK”), Zhovti, Vody, Ukraine
Min. miner. depos. 2019, 13(3):96-103
https://doi.org/10.33271/mining13.03.096
Full text (PDF)
ABSTRACT
Purpose. Determining the possible level of air dustiness during the bucket hoisting of uranium ores along the shaft “Holovnyi” of the mine “Novokostiantynivska”, SE “VostGOK”.
Methods. To determine the level of air dustiness, a physical modelling of this process under laboratory conditions was used. Physical modelling of the dust formation process has been performed on a laboratory bench, which consisted of an AT-2K-250/500 wind tunnel with non-return-flow and a closed working section, as well as an aspirator with a drive and hoses for sampling and filtration of air. The granulometric composition has been determined for modelling: the parameters of large-sized fractions – by the linear method (i.e., measurements of the geometric dimensions of the separate pieces and their weighting), and the composition of fine-sized fractions (–15 + 0 mm) – by sieve analysis and weighing.
Findings. The granulometric composition of the rock mass has been determined, which is planned to get out by a bucket hoisting method along the shaft “Holovnyi”, and the dust formation process has been modelled on a laboratory bench. It has been set that the level of air dustiness during the rock mass hoisting will be significantly influenced by its humidity or the additional binding of ore fines in the upper layer if to treat the surface with acting agents. Moreover, it is influenced by the uniformity of these fines distribution within the bucket volume, which, in turn, will depend on the way of its loading. It is recommended to use the vibrating feeder for loading the bucket. Thus, the sufficient natural moisture of the rock mass (more than 4%) will ensure the level of dust content of the emitted air below the normative indicators.
Originality. It has been determined that the dust content in the air depends on the moisture of the rock mass and the presence of moisture in the ore to more than 4% reduces the level of dust in the air to 0.4 – 0.45 mg/m3, which is 0.67 – 0.75 of the existing safe dust concentration for such conditions.
Practical implications. The result obtained confirms the possibility of using the bucket hoisting method along the shaft “Holovnyi” to the daylight surface of uranium ores mined at the mine “Novokostiantynivska” (provided that the proposed recommendations will be observed) without exceeding the existing safe dust concentration of air supplied to the mine.
Keywords: bucket hoisting, dust content, air, measures for dust suppression, ore
REFERENCES
Bondarenko, V., Kovalevs’ka, I., & Fomychov, V. (2012). Features of carrying out experiment using finite-element method at multivariate calculation of mine massif – combined support system. Geomechanical Processes During Underground Mining – Proceedings of the School of Underground Mining, 7-13.
https://doi.org/10.1201/b13157-3
Bondarenko, V., Svietkina, O., & Sai, K. (2017). Study of the formation mechanism of gas hydrates of methane in the presence of surface-active substances. Eastern-European Journal of Enterprise Technologies, 5(6(89)), 48-55.
https://doi.org/10.15587/1729-4061.2017.112313
Falshtynskyi, V., Dychkovskyi, R., Saik, P., & Lozynskyi, V. (2014). Some aspects of technological processes control of an in-situ gasifier during coal seam gasification. Progressive Technologies of Coal, Coalbed Methane, and Ores Mining, 109-112.
https://doi.org/10.1201/b17547-20
Gurin, A.O., Beresnevich, P.V., Nemchenko, A.A., & Oshmyansky, I.B. (2007). Aerology of mining enterprises. Moscow, Russia: Publishing “Mineral”.
Khomenko, O., & Maltsev, D. (2013). Laboratory research of influence of face area dimensions on the state of uranium ore layers being broken. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (2), 31-37.
Khomenko, O.Ye. (2012). Implementation of energy method in study of zonal disintegration of rocks. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (4), 44-54.
Khomenko, О., Sudakov, А., Malanchuk, Z., & Malanchuk, Ye. (2017). Principles of rock pressure energy usage during underground mining of deposits. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (2), 35-43.
Kolosov, V., Stupnik, M., & Kalinichenko, V. (2014). Condition and prospects of Ukrainian mining industry development. Mining of Mineral Deposits, 10(2), 193-197.
https://doi.org/10.15407/mining08.02.193
Kovalevs’ka, I., Symanovych, G., & Fomychov, V. (2013). Research of stress-strain state of cracked coal-containing massif near-the-working area using finite elements technique. Annual Scientific-Technical Collection – Mining of Mineral Deposits, 159-163.
https://doi.org/10.1201/b16354-28
Lozynskyi, V., Saik, P., Petlovanyi, M., Sai, K., & Malanchuk, Z. (2018). Analytical research of the stress-deformed state in the rock massif around faulting. International Journal of Engineering Research in Africa, (35), 77-88.
https://doi.org/10.4028/www.scientific.net/jera.35.77
Malanchuk, Y., Moshynskyi, V., Korniienko, V., & Malanchuk, Z. (2018). Modeling the process of hydromechanical amber extraction. E3S Web of Conferences, (60), 00005.
https://doi.org/10.1051/e3sconf/20186000005
Malanchuk, Z.R. (2019). Substantiating parameters of zeolite-smectite puff-stone washout and migration within an extraction chamber. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (6). Article in press.
Malanchuk, Z., Korniyenko, V., Malanchuk, Y., & Khrystyuk, A. (2016). Results of experimental studies of amber extraction by hydromechanical method in Ukraine. Eastern-European Journal of Enterprise Technologies, 3(10(81)), 24.
https://doi.org/10.15587/1729-4061.2016.72404
Malanchuk, Z., Moshynskyi, V., Malanchuk, Y., & Korniienko, V. (2018). Physico-mechanical and chemical characteristics of amber. Solid State Phenomena, (277), 80-89.
https://doi.org/10.4028/www.scientific.net/ssp.277.80
Nesterenko, O.V. (2001). Wettability of dust with aqueous solutions based on some chlorides. Mining of Ores Depo-sits, (77), 140-142.
Pismennyі, S.V. (2014). Development of folding structural depo-sits of rich ores by chamber development systems. Mining Bulletin: Scientific and Technical Collection, (97), 3-7.
Pysmennyi, S., Brovko, D., Shwager, N., Kasatkina, I., Paraniuk, D., & Serdiuk, O. (2018). Development of complex structure ore deposits by means of chamber systems under conditions of the Kryvyi Rih iron ore field. Eastern-European Journal of Enterprise Technologies, 5(1(95)), 33-45.
https://doi.org/10.15587/1729-4061.2018.142483
Safety rules for the development of deposits of ore and non-metallic minerals underground. (2017). Kyiv, Ukraine: Fort.
Sai, K., Malanchuk, Z., Petlovanyi, M., Saik, P., & Lozynskyi, V. (2019). Research of thermodynamic conditions for gas hydrates formation from methane in the coal mines. Solid State Phenomena, (291), 155-172.
https://doi.org/10.4028/www.scientific.net/SSP.291.155
Stupnik, N.I., Kalinichenko, V.A., & Kalinichenko, Ye.V. (2018). The study of the stress-strain state of the massif in mining uranium at “Vostgok” deposits. Kyiv, Ukrain: Publishing House “St. Ivan Rylskyi”.
Stupnik, N.I., Kalinichenko, V.A., Fedko, M.B., & Kalinchenko, Ye.V. (2018). Technology of underground block leaching at underground mines of “Vostgok”. Petrosani, Romania: Publishing of Petrosani Universitatas.
Stupnik, N.I., Kalinichenko, V.A., Fedko, M.B., & Mirchenko, Ye.G. (2013a). Prospects for the use of non-trotylous explosives in mines with underground mining of minerals. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (1), 44-49.
Stupnik, N.I., Kalinichenko, V.A., Fedko, M.B., & Mirchenko, Ye.G. (2013b). The influence of the stress-strain state of the rock mass on the technology of breaking uranium ores. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (2), 11-16.
Tarasyutin, V.M. (2015). Geotechnology features of high quality martite ore from deep mines of Kryvyi Rih basin. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (1),54-60.
Tkachuk, K.N., Tkachuk, K.K., & Gurin, Yu.A. (2011). Labor protection. Kryvyi Rih, Ukraine: Publishing Center of Kryvyi Rih Technical University.
Vladyko, O., Kononenko, M., & Khomenko, O. (2012). Imitating modeling stability of mine workings. Geomechanical Processes During Underground Mining – Proceedings of the School of Underground Mining, 147-150.
https://doi.org/10.1201/b13157-26
