• Шихов Андрей Михайлович
• Румянцев Сергей Алексеевич
• Азаров Евгений Борисович

УДК 622.231

DOI: 10.21440/0536-1028-2019-8-125-132

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Shikhov A. M., Rumiantsev S. A., Azarov E. B. Vibratory conveying equipment with steady elliptical oscillations. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2019; 8: 125–132. DOI: 10.21440/0536-1028-2019-8-125-132

Abstract

Introduction. Vibratory conveying equipment is widely used in many branches of mining industry at various enterprises (concentrating mills, transfer points at railway stations, steelworks, etc.). Design of vibratory conveying equipment with new qualities requires a more detailed analysis of oscillation parameters, in particular, oscillation parameters of machine working member.
Research aim is to investigate the oscillation parameters of vibratory conveying equipment with three vibration exciters by means of vibratory equipment dynamics mathematical model.
Methodology. The nature of working member movements is studied by means of vibratory equipment dynamics mathematical model. The model is based on the numerical solution to a system of diferential equations governing the dynamics of vibratory conveying equipment with n-unbalance vibration exciters.
Results. The present article investigates the parameters of oscillations and the features of the center-of-mass motion in vibratory conveying equipment with three vibration exciters placed on one working member. As a result of numerical experiment, the impact of location of vibration exciters and eccentric torque of unpaired vibration exciters on the working member vibration parameters has been determined. The dependence between the direction of mass center trajectory and the direction of an unpaired vibration exciter rotation is studied.
Summary. The quoted results of theoretical studies through a mathematical model show that the addition of a third vibration exciter to vibratory conveying equipment design qualitatively infuences working member vibration parameters: by changing the position and eccentric torque of an unpaired vibration exciter, it is possible to get the various options of working member vibrations. Consequently, the study of new types of vibratory equipment is a very promising direction.

Key words: vibratory conveying equipment; vibrating screen; self-synchronization; vibration exciter; dynamics; mathematical model.

REFERENCES

1. Blekhman I. I. Synchronization of dynamic systems. Moscow: Nauka Publishing; 1971. (In Russ.)
2. Irvin R. A. Large vibrating screen design-manufacturing and maintenance consideration. Mining Engineering. 1984; 36 (9): 1341–1346.
3. Sperling L. Selbstsynchronisation statisch und dynamisch unwuchtiger Vibratoren. Technische Mechanic. 1994; 14 (1, 2).
4. Pikovsky A., Rosenblum M., Kurths J. Synchronization: A universal concept in nonlinear sciences. Cambridge Nonlinear Science. Series 12. Cambridge University press, 2001. 411 p.
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6. Kosolapov A. N. Periodic solutions of forced oscillations of vibratory conveying equipment working 
   member in view of disturbance load and friction force in supports. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 1989; 11: 103–107. (In Russ.)
7. Afanasiev A. I., Kazakov Iu. M., Suslov D. N., Chirkova A. A. Analysis of overall performance of vibration exciters of resonant vibratory conveying equipment. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2018; 1: 71–77. (In Russ.)
8. Afanasiev A. I., Suslov D. N., Chirkova A. A. Assessment of energy effi ciency of resonant vibratory conveying equipment. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2018; 2: 68–75. (In Russ.)
9. Afanasiev A. I., Suslov D. N. Evaluation of energy effi ciency of resonance conveyor vibration exciters. Gornyi informatsionno-analiticheskii biulleten (nauchno-tekhnicheskii zhurnal) = Mining Informational and Analytical Bulletin (scientifi c and technical journal). 2018; 1: 126–132. (In Russ.)
10. Afanasiev A. I., Potapov V. Ia., Suslov D. N., Chirkova A. A. Reducing the load of the elastic support of the resonance vibrating conveyor machines. Izvestiya Uralskogo Gosudarstvennogo Gornogo Universiteta = News of the Ural State Mining University. 2018; 1(49): 85–87. (In Russ.)
11. Rumiantsev S. A., Azarov E. B., Alekseeva O. N., Tarasov D. Iu., Shikhov A. M. Non-linear dynamics of new perspective types of vibration transport machines with selfsinchronized vibration exciters. Vestnik Nizhegorodskogo universiteta im. N. I. Lobachevskogo = Vestnik of Lobachevsky State University of Nizhni Novgorod. 2011; 4 (2): 302–304. (In Russ.)
12. Rumyantsev S., Alexeyeva O., Azarov E., Shihov A. Numerical simulation of non-linear dynamics of vibration transport machines. Recent Researches in Engineering and Automatic Control. Spain, 2011. Р. 88–92.
13. Azarov E. B., Rumiantsev S. A., Shikhov A. M. Experimental vibration table to study oscillatory system dynamics. Transport Urala = Transport of the Urals. 2014; 4: 3–7. (In Russ.)

Received 5 July 2019

• Игнатьева Маргарита Николаевна
• Логинов Владимир Григорьевич
• Балашенко Валерий Васильевич

УДК 338.23:330.52(98)

DOI: 10.21440/0536-1028-2019-8-97-107

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Semenov A. N., Seryi R. S. Hard-to-wash sand disintegration investigation in gold placers. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2019; 8: 88–96 (In Russ.). DOI: 10.21440/0536-1028-2019-8-88-96

Abstract Introduction. A promising area of replenishing the resource base for placer gold mining could be the involvement of high clay content deposits. Important scientifi c and practical problem with this solution is improving the quality of sand preparation for enrichment due to high-quality disintegration. Solving the problem requires not only creating more effi cient clay sands disintegrators, but also study of sand granulometry, evaluation of their physical and mechanical properties, the material composition of the mineral rock mass. The composition of the hard-to-wash sands of the Far East shows that the clay content in them varies widely and can reach 60% or more. Analysis of the existing methods of sands deposits disintegration shows that the use of traditional methods of rock preparation for enrichment will not allow to fully solving the problem of processing high-clay alluvial deposits.
Research aim is the development of a scheme for processing high-clay sands using a high-pressure hydrodynamic disintegrator based on the principle of the effect of hydrodynamic cavitation.
Research methodology. The experiments have been carried out on high-clay sand processing with a laboratory disintegration facility with various cavity activators.
Results. In the course of the study, the design of the device for the disintegration of high-clay sands was developed and proposed for practical implementation, allowing to reduce the loss of gold in the enrichment of high-clay sands on sluice washers, as well as to engage in mining alluvial deposits with high clay content, mining of which was previously considered unprofitable. The use of this technological scheme will make it possible to switch from a two-stage technology for the processing of placers to a one-stage, incorporating the processing of sands and effel into a single technological process, eliminating the costs of processing man-made alluvial sands of gold deposits.

Key words: placer gold deposit; high clay content sands; disintegration; cavitation; hydrodynamic disintegrator.

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4. Litvitsev V. S., Alexeev V. S., Kradenykh I. A. The technology of development of residue objects of precious metals placer deposits. In: E3S Web of Conferences. 2018; 56. DOI: 10.1051/e3sconf/20185601005
5. MacFarlane K. E., Nordling M. G. Yukon Exploration and Geology Overview 2013. Whitehorse, Canada (Yukon Geological Survey), 2014. 80 p.
6. Oberthuer T., Melcher F., Weiser T. W. Detrital platinum-group minerals and gold in placers of southeastern Samar Island, Philippines. Canadian Mineralogist. 2017; 55(3): 45–62.
7. Seryi R. S., Nechaev V. V. On the necessity of an integrated approach to the problem of disintegration of hard-to-wash sands of placers. Gornyi informatsionno-analiticheskii biulleten (nauchno-tekhnicheskii zhurnal) = Mining Informational and Analytical Bulletin (scientific and technical journal). 2009; special edition 4. Far East-1. pp. 268–274. (In Russ.)
8. Khnykin V. F. Prospects of hard-to-wash high-clay gold placers. Gornyi zhurnal = Mining Journal. 1995; 11: 26–31. (In Russ.)
9. Beloborodov V. I., Fedotov K. V., Romanenko A. A. Concentrating gold-bearing sand with a high content of clay. Gornyi zhurnal = Mining Journal. 1995; 5: 12–18. (In Russ.)
10. Kisliakov V. E., Karepanov A. V., Semenov A. N. Results of research of clay-bearing sand preparation to gravitational concentration. In: Gravitational methods of concentration. Modern concentration equipment and new technologies to process mineral raw material. Proceedings of the 2nd science and technical conference dedicated to the 100th anniversary of Trud plant. Novosibirsk: Sibprint Publishing; 2005. p. 87–89. (In Russ.)
11. Levkovskii Iu. L. The structure of cavitation flows. Leningrad: Sudostroenie Publishing; 1978. (In Russ.)
12. Kisliakov V. E., Karepanov A. V., Semenov A. N. Study of clay-bearing sand washing efficiency. In: Modern technologies of mineral resources development: collection of works. Krasnoyarsk: GATsMiZ Publishing; 2004. p. 354–362. (In Russ.)
13. Karepanov A. V., Semenov A. N. Study of clay softening with the use of hydrodynamical cavitation. In: Modern technologies of mineral resources development: collection of works. Krasnoyarsk: GATsMiZ Publishing; 2005. p. 190–194. (In Russ.)

Received 7 May 2019

• Наумов Илья Викторович
• Красных Сергей Сергеевич

УДК 332.14;553.04

DOI: 10.21440/0536-1028-2019-8-108-124

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Naumov I. V., Krasnykh S. S. The research of interregional relationships in the development of the mineral resource complex of the Russian Federation. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2019; 8: 108–124 (In Russ.). DOI: 10.21440/0536-1028-2019-8-108-1244

ABSTRACT

The research aims to study and model inter-regional interconnections in the development of mineral resource complex of the Russian Federation and determine the main vectors of their development for the implementation of RF Spatial Development Strategy for the period up to 2025. The research methodology is based on spatial econometrics tools application, such as: spatial autocorrelation of RF subjects in the main areas mineral resource complex development. Results. The spatial analysis of regions interconnection in the development of the mineral resource complex with the use of autocorrelation according to Moran method allowed us to establish RF promising centers for oil and gas production (Sakha, Sakhalin, Tomsk, Astrakhan, Samara, and Orenburg regions), gold and metal ore (Krasnoyarsk, Transbaikal and Kamchatka regions, the Republic of Buryatia and the Kemerovo region), coal (Komi Republic, Sakha and Buryatia, Novosibirsk Region, Krasnoyarsk Krai). These territories are not considered by the Strategy for Spatial Development of the Russian Federation for the period up to 2025 as priority mineral resource centers. Summary. The spatial development strategy of the Russian Federation for the period until 2025 considers only the Republic of Sakha (Yakutia), Komi and Tatarstan, Krasnoyarsk, Khabarovsk Territory, Nenetsky, Khanty-Mansiysk and Yamalo-Nenets, Chukotka Autonomous Districts, Tyumen, Kemerovo, Irkutsk, Amur, Magadan and Sakhalin regions as priority territories for the spatial development of the mineral resource complex. At the same time, mineral resources development of a number of regions in the Southern, Ural and Siberian macro-regions is ignored. The territorial systems that make up the Ural macro-region have high levels of mineral production and are promising mineral resource centers of the country, which have all the necessary resources and close ties with other regions in processing the extracted raw materials. Key words: interregional relationships; mineral and raw materials complex of RF; spatial autocorrelation; RF Spatial Development Strategy until 2025. Acknowledgements. The research has been carried out in accordance with the research plan of the Laboratory for Spatial Development of Territories, Institute of Economics UB RAS for 2019.

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Received 5 September 2019

• Семенов Александр Николаевич
• Серый Руслан Сергеевич

УДК 622.342.1

DOI: 10.21440/0536-1028-2019-8-88-96

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Семенов А. Н., Серый Р. С. Исследование процессов дезинтеграции труднопромывистых песков россыпных месторождений золота // Известия вузов. Горный журнал. 2019. № 8. С. 88–96. DOI: 10.21440/0536-1028-2019-8-88-96

АННОТАЦИЯ

Введение. Перспективным направлением пополнения сырьевой базы россыпной золотодобычи может стать вовлечение в эксплуатацию месторождений с высоким содержанием глины. Важной научно-практической задачей при этом является решение проблемы повышения качества подготовки песков к обогащению за счет качественной дезинтеграции. Решение проблемы требует не только создания более эффективных аппаратов для дезинтеграции глинистых песков, но и изучения гранулометрии песков, оценки их физико-механических свойств, вещественного состава минеральной горной массы. Состав труднопромывистых песков Дальнего Востока показывает, что содержание глины в них изменяется в широких пределах и может достигать 60 % и более. Анализ существующих способов дезинтеграции песков месторождений показывает, что использование традиционных способов подготовки породы к обогащению не позволит в полном объеме решить проблему переработки высокоглинистых россыпей.
Цель работы. Разработка схемы переработки высокоглинистых песков с применением высоконапорного гидродинамического дезинтегратора, в работе которого использован эффект гидродинамической кавитации.
Методика исследований. Выполнены эксперименты по переработке высокоглинистых песков на лабораторной дезинтегрирующей установке с различными активаторами кавитации.
Результаты. В ходе проведения исследования разработана и предложена к практической реализации конструкция установки для дезинтеграции высокоглинистых песков, позволяющая сократить потери золота при обогащении высокоглинистых песков на шлюзовых промывочных приборах, а также вовлекать в отработку россыпные месторождения с высоким содержанием глины, отработка которых ранее считалась нерентабельной. Использование данной технологической схемы позволит перейти от двухстадийной технологии переработки россыпей к одностадийной, включив в единый технологический процесс переработку песков и эфелей, исключив затраты на переработку техногенных песков россыпных месторождений золота.

Ключевые слова: россыпное месторождение золота; высокоглинистые пески; дезинтеграция; кавитация; гидродинамический дезинтегратор.

БИБЛИОГРАФИЧЕСКИЙ СПИСОК

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Поступила в редакцию 7 мая 2019 года