№66-02

Actualization of the issue with sustainable quality ensuring of iron ore raw materials in the conditions of mining department PJSC "ArcelorMittal Kryvyi Rih"

V. Azarian¹, S. Fedorenko¹, D. Titov¹, V. Grinchenko²

¹Кryvyi Rih National University, Кryvyi Rih, Ukraine

²Mining Department of PJSC "ArcelorMittal Kryvyi Rih", Кryvyi Rih, Ukraine

Coll.res.pap.nat.min.univ. 2021, 66:17-25

https://doi.org/10.33271/crpnmu/66.017

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ABSTRACT

Purpose. To analyze the level of provision of the enrichment complex of the mining department of PJSC "ArcelorMittal Kryvyi Rih" with iron ore of constant quality to stabilize and increase the efficiency of processing. 

Methods. A statistical analysis of the operational data of the Fe _magnet mass fraction has been carried out at all technological stages - from the face to the ore-processing plant (OPP), the standard deviation and the coefficient of variation were calculated in order to determine the production links with the greatest quality deviations from the planned values.

Findings. It has been established that as a result of alternate mixing of ore cargo flows of pits No. 2-bis and No. 3 in cycles, the averaging results deteriorate, which is expressed in the form of excess fluctuations in the raw material quality of the combined ore cargo flows. The necessity of applying the methods and means of quality control and management, developed by the team of the problem-branch laboratory of the Krivoy Rog National University, has been substantiated.

Originality consists in the scientific substantiation of the choice of methods and means for managing the quality of ores for the conditions of the quarries of the mining department of PJSC "ArcelorMittal Kryvyi Rih", carried out on the basis of the analysis of the operational data of the mass fraction of Fe _magnet in all technological links - from the face of the open pit to the OPP.

Practical implications. Application in the mining department of PJSC "ArcelorMittal Kryvyi Rih" of the proposed technological solutions in order to stabilize the raw material quality of ore cargo flows of pits No. 2-bis and No. 3 can significantly reduce fluctuations in the content of the useful component over time, providing the OPP with iron ore raw materials of appropriate quality

Keywords: homogenization, stabilization, quality of iron ore raw materials, quality control and management system.

References

1. Azaryan, A.A., Azaryan, V.A., & Lisovoy, G.N. (2012). Sostoyanie problemy kontrolya kachestva pri dobyche i pererabotke zhelezorudnogo syr'ya. Gornyy vestnik: sb. nauchn. rab., 95(1), 132–135.
2. Lomonosov G.G. (1975). Formirovanie kachestva rudy pri otkrytoy dobyche. Nedra.
3. Arsen'yev, S.Ya., & Prudovskiy, A.D. (1980). Vnutrikar'yernoe usrednenie zheleznykh rud. Nedra.
4. Rzhevskiy, V.V. (1985). Otkrytye gornye raboty. Uchebnik dlya vuzov. Chast' 2, Tekhnologiya i kompleksnaya mekhanizatsiya. Nedra.
5. Byzov, V.F. (1991). Upravlenie kachestvom produktsii kar'yerov. Uchebnik dlya vuzov po spetsial'nosti «Otkrytye gornye raboty». Nedra.
6. Portsevskiy, A.K. (1998). Upravlenie kachestvom rudnoy massy na otkrytykh gornykh rabotakh. Uchebnoe posobie po kursu lektsiy dlya studentov spetsial'nosti 0902.
7. Azaryan, A.A. Kolosov, V.A., Lomovtsev, L.A., & Uchitel', A.D. (2001). Kachestvo mineral'nogo syr'ya. Mineral.
8. Azaryan, V.A. (2007). Tseli i zadachi sozdaniya kompleksnoy sistemy upravleniya kachestvom rud v rudopotokakh kar'yerov. Razrabotka rudnykh mestorozhdeniy, 91, 207–209.
9. Azaryan, V. A., & Zhukov, S. A. (2017). Obosnovanie perioda oprobovaniya zaboev kar'yera. Zbirnyk naukovykh prats Natsionalnoho hirnychoho universytetu, 51, 8–18.
10. Azarian, V.A., & Zhukov, S.O. (2018). Rozvytok teorii upravlinnia yakistiu rudopotokiv zalizorudnykh hirnycho-zbahachuvalnykh kombinativ. Vcheni zapysky Tavriiskoho natsionalnoho universytetu im. Vernadskoho: nauk. zhurnal,29(3). 89–94.