Testing the methodology for determining the degree of disintegration to the processes of crushing kimberlite ores

The article provides an approbation of the methodology for determining the degree of disintegration of geomaterials on the example of impact crushing of kimberlite ores from the Zarnitsa pipe in the mode of communication of multiple dynamic impacts carried out at the DKD-300 crusher. The technique involves the identification of two ore preparation processes by the granulometric composition of crushing products: disintegration and mechanical destruction proper. The technique is based on isolating from the general granulometric composition of the crushing products the share of the area of their predominant accumulation (mode), described in the form of a lognormal distribution that depends on the energy of mechanical action and is responsible for the process of direct mechanical destruction of the geomaterial. The degree of disintegration is determined by the proportion of material released by disintegration (spontaneous dispersion) in the process of crushing and grinding, which is determined by subtracting from the total distribution of the particle size distribution of the share of the destroyed geomaterial (in percent) of the reduced material directly by mechanical destruction. Calculations show that the degree of disintegration for kimberlite ore during multiple impact crushing carried out on the crusher DKD-300 reaches a value of 0.74. This is interpreted to mean that kimberlite rocks as an object of crushing have a high tendency to disintegrate. The degree of disintegration can be an important technological characteristic of both the object of ore preparation — mineral raw materials, and the crushing and grinding apparatus, regardless of the method and standard size used.

Matveev A. I., Lvov E. S. Testing the methodology for determining the degree of disintegration to the processes of crushing kimberlite ores. MIAB. Mining Inf. Anal. Bull. 2022;(5—2):163—173. [In Russ]. DOI: 10.25018/0236_1493_2022_52_0_163.

Matveev A. I.¹, Dr. Sci. (Eng.), Chief Researcher, acting laboratory manager, https://orcid. org/0000-0002-4298-5990, andrei.mati@yandex.ru;
Lvov E. S.¹, Junior Researcher, https://orcid.org/0000-0002-3843-0714, lvoves@bk.ru;
¹ Chersky Mining Institute of the North, Siberian Branch, RAS, Republic of Sakha (Yakutia) Yakutsk, Lenin ave. 43, 677980, Russia.

Matveev A. I., e-mail: andrei.mati@yandex.ru

1. Chanturia V. A., Kozlov A. P. Development of physical and chemical foundations and development of innovative technologies for deep processing of technogenic mineral raw materials. Gornyi Zhurnal. 2014, no. 7, pp. 79–84. [In Russ].

2. Chanturia V. A., Kozlov A. P. Modern problems of complex processing of refractory ores and technogenic raw materials. Modern problems of complex processing of refractory ores and technogenic raw materials (Plaksin’ readings 2017). Materials of the international conference. 2017, pp. 3–6. [In Russ].

3. Chanturia V. A. Innovative technologies for complex and deep processing of mineral raw materials of complex material composition. Innovative processes for complex processing of natural and technogenic mineral raw materials (Plaksin’ readings 2020). Materials of the international conference. 2020, pp. 3–4. [In Russ].

4. Gorain B. K. Physical Processing: Innovations in Mineral Processing. Innovative Process Development in Metallurgical Industry, Concept to Commission. Springer International Publishing, Switzerland. 2016, pp. 9–65. DOI:10.1007/978–3–319–21599–0_2.

5. Sotoudeh F., Nehring M., Kizil M. S., Knights P. Integrated underground mining and pre-concentration systems; a critical review of technical concepts and developments. International Journal of Mining, Reclamation and Environment. 2020, vol. 35, iss. 3, pp. 153–182.

6. Perov V. A., Andreev E. E., Bilenko L. F. Crushing, grinding, screening of minerals. Moscow, Nedra. 1990, 300 p. [In Russ].

7. Matveev A. I., Lvov E. S. Disintegration of geomaterials during ore preparation the role and significance. Fundamental and Applied Problems of Mining Sciences. 2019, vol. 6, no. 3, pp. 301–307. [In Russ]. https://doi.org/10.1080/17480930.2020.1782573.

8. Lessard J., Sweetser W., Bartram K., Figueroa J., and McHugh L. Bridging the gap: Understanding the economic impact of ore sorting on a mineral processing circuit. J. Min. Eng. 2015, vol. 91, pp. 92–99.

9. Bobrievich A. P., Bondarenko M. N., Gnevushev M. A. Diamond deposits of Yakutia. Moscow, Gosgeoltekhizdat, 1959, 528 p. [In Russ].

10. Yusupov T. S. Improving the processes of opening mineral aggregates during the development of refractory objects. Fiziko-tekhnicheskiye problemy razrabotki poleznykh iskopayemykh. 2016, no. 3, pp. 143–149. [In Russ].

11. Gong D., Nadolski S., Sun C., Klein B., and Kou J. The effect of strain rate on particle breakage characteristics. Powder Technology. 2018, vol. 339, pp. 595–605. DOI: 10.1016/j.powtec. 2018.08.020.

12. Mamonov S. V., Zakirnichny V. N., Metelev A. A., Dresvyankina T. P., Volkova S. V., Kuznetsov V. A., Ziyatdinov S. V. Advanced technologies for the disclosure of mineral raw materials in preparation to flotation enrichment. Fiziko-tekhnicheskiye problemy razrabotki poleznykh iskopayemykh. 2019, no. 5, pp. 158–169. [In Russ].

13. Matveev A. I., Lvov E. S. Development of a method for determining the degree of disintegration of geomaterials in the process of multiple impact crushing. Physical and technical problems of the development of useful minerals. 2020, no. 2, pp. 137–143. [In Russ].

14. Matveev A. I., Lvov E. S., Osipov D. A. Justification of the use of a combined impact crusher DKD-300 in the scheme of dry dressing of kimberlite ores of the Zarnitsa pipe. Physical and technical problems of the development of useful minerals. 2013, no. 4, pp. 107–115. [In Russ].