Effect of properties of solids on grinding energy in mills

The urgency of the issue under discussion is explained by the necessity of enhancement of mining efficiency by means of reducing energy consumption of crushing and fine grinding in mills. This study aims at experimental validation of the theory of crushing and fine grinding of solids in grinding chambers of mills. The milling processes are described using physicochemical phenomena: phase transitions, thermolysis, emission, point defects, dislocations and other factors of the theory of short-lived activity centers. A promising way of solving this problem, including reduction in energy consumption of crushing and fine grinding of solids in different-kind mills in the framework of product preparation, is justified. The main deficiencies of fine grinding of solids in mills are identified. The lab-scale test bench on the ball-tube mill basis is described. The test bench allowed identification of unit impulses, recording of their shapes and their spectral analysis. The experimental validation of the theory of milling with measurement of the ball load parameters in the contact zone of balls and grains is presented with regard to rocks. The ideas on influence of friction properties of mineral grains on the energy of milling in grinding chambers are amended. It is found that the energy criterion of failure depends primarily on the physical properties of materials subjected to milling. The measurement of dynamic parameters in the ball–grain contact zone without receiver-induced impairment of the results proves that optimization of the milling process with regard to the phenomena of damping of the impact amplitude is an efficient tool of reduction of energy consumption in crushing and fine grinding in mills. The theoretical concept of processing in grinding chambers in mills is proved experimentally, by measurements of the ball load parameters immediately in the contact zones of balls and mineral grains.

Keywords: mineral raw material, energy consumption, crushing and fine grinding, mill, experiment, balls, friction properties.
For citation:

Golik V. I. Effect of properties of solids on grinding energy in mills. MIAB. Mining Inf. Anal. Bull. 2021;(10):112-122. [In Russ]. DOI: 10.25018/0236_1493_2021_10_0_112.

Acknowledgements:
Issue number: 10
Year: 2021
Page number: 112-122
ISBN: 0236-1493
UDK: 504.55.054:662 (470.6)
DOI: 10.25018/0236_1493_2021_10_0_112
Article receipt date: 02.02.2021
Date of review receipt: 28.06.2021
Date of the editorial board′s decision on the article′s publishing: 10.09.2021
About authors:

V.I. Golik, Dr. Sci. (Eng.), Professor, e-mail: v.i.golik@mail.ru, Mining North-Caucasian State Technological University, 362021, Vladikavkaz, Russia.

 

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Bibliography:

1. Drebenstedt K., Golik V. I., Dmitrak Yu.V. Prospects for diversification of metal mining technology in North Ossetia-Alania. Ustoychivoe razvitie gornykh territoriy. 2018, vol. 10, no. 1 (35), pp. 125—131. [In Russ].

2. Espinoza R. D., Rojo J. Towards sustainable mining (Part I): Valuing investment opportunities in the mining sector. Resources Policy. 2017, vol. 52, pp. 7—18.

3. Kaplunov D. R., Rylnikova M. V., Radchenko D. N. Expansion of the raw material base of mining enterprises based on the integrated use of mineral resources of deposits. Gornyi Zhurnal. 2013, no. 12, pp. 29—33. [In Russ].

4. Tayebi-Khorami M., Edraki M., Corder G., Golev A. Re-thinking mining waste through an integrative approach led by circular economy aspirations. Minerals. 2019, vol. 9. pp. 1–13. DOI: 10.3390/min9050286.

5. Dmitrak Yu. V. Teoriya dvizheniya melyushchey zagruzki i povyshenie effektivnosti oborudovaniya dlya tonkogo izmel'cheniya gornykh porod [The theory of grinding loading motion and increasing the efficiency of equipment for fine grinding of rocks. abstract of thesis], Doctor’s thesis, Moscow, MGGU, 2000, 44 p.

6. Zaalishvili V. B., Sattsaev A. M., Bolatova M. A., Enaldiev A. F. Resource-saving technologies for processing tailings of concentration and metallurgy. MIAB. Mining Inf. Anal. Bull. 2004, no. 2, pp. 318—320. [In Russ].

7. Dzaparov V.Kh., Kharebov G. Z., Stas V. P., Stas P. P. Research of dry building mixtures based on industrial waste for underground construction. Sukhie stroitel'nye smesi. 2020, no. 1, pp. 35—38. [In Russ].

8. Gabaraev O. Z., Dmitrak Yu.V., Drebenstedt K., Savelkov V. I. Regularities of interaction of destroyed geomaterials and ore-bearing massif during mining of underworked disseminated ores. Ustoychivoe razvitie gornykh territoriy. 2017, vol. 9, no. 4 (34), pp. 406—413. [In Russ].

9. Ben-Awuah E., Richter O., Elkington T., Pourrahimian Y. Strategic mining options optimization: Open pit mining, underground mining or both. International Journal of Mining Science and Technology. 2016, vol. 26, no. 6, pp. 1065–1071.

10. Bogdanov V. S., Vorobyov N. D. Kinematics of ball loading in drum mills with inclined interchamber partitions. Izvestiya vysshikh uchebnykh zavedeniy. Gornyy zhurnal. 1985, no. 1, pp. 84—96. [In Russ].

11. Petrov V. A., Andreev E. E., Bilenko L. F. Droblenie, izmel'chenie i grokhochenie poleznykh iskopaemykh [Crushing, crushing and screening of minerals], Moscow, Nedra, 1990, 301 p.

12. Sysa A. B. On the choice of rational directions for the development of grinding equipment. Izvestiya vuzov. Tsvetnaya metallurgiya. 1994, no. 3, pp. 67—75. [In Russ].

13. Gryazev M. V., Kachurin N. M., Zakharov E. I. Tula state university: 85 years in the service of the fatherland. Gornyi Zhurnal. 2016, no. 2, pp. 25—29. [In Russ].

14. Vrancken C., Longhurst P. J., Wagland S. T. Critical review of real-time methods for solid waste characterisation: Informing material recovery and fuel production. Waste Management. 2018, vol. 61, pp. 40—57.

15. Dmitrak Yu.V., Shishkanov K. A. Development of a probabilistic kinematic model of grinding bodies in the grinding chamber of a vibration mill. MIAB. Mining Inf. Anal. Bull. 2010, no. 12, pp. 302—308. [In Russ].

16. Cardu M., Seccatore J., Vaudagna A., Rezende A., Galvao F., Bettencourt J. S., de Tomi G. Evidences of the influence of the detonation sequence in rock fragmentation by blasting. Part I. REM: Revista Escola de Minas. 2015, vol. 68, no. 3, pp. 337–342. DOI: 10.1590/037044672014680218.

17. Emelianenko E. A., Radchenko D. N., Lavenkov V. S., Gavrilenko V. V. Joint utilization of beneficiation wastes during the integrated development of multi-component ore deposits. Gornyi Zhurnal. 2016, no. 12, pp. 87—93. [In Russ].

18. Komashchenko V. I. Development of an explosive technology that reduces harmful effects on the environment. Izvestiya Tul’skogo gosudarstvennogo universiteta, Nauki o zemle. 2016, no. 1, pp. 34—43. [In Russ].

19. Lyashenko V. I., Andreev B. N. Increasing the efficiency of drilling and blasting preparation of ore mass for underground block leaching. Occupational Safety in Industry. 2019, no. 8, pp. 27—35. [In Russ].

20. Klyuev R. V., Bosikov I. I., Mayer A. V., Gavrina O. A. Comprehensive analysis of the use of effective technologies to improve the sustainable development of the natural and technical system. Ustoychivoe razvitie gornykh territoriy. 2020, vol. 12, no. 2(44), pp. 283—290. [In Russ].

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