Development of the method to operatively control quality of iron ore raw materials at open and underground extraction

Authors

  • Albert Azaryan Kryvyi Rih National University Vitaliya Matusevicha str., 11, Kryvyi Rih, Ukraine, 50027, Ukraine https://orcid.org/0000-0002-1381-579X
  • Andrey Gritsenko Kryvyi Rih National University Vitaliya Matusevicha str., 11, Kryvyi Rih, Ukraine, 50027, Ukraine
  • Annait Trachuk Kryvyi Rih National University Vitaliya Matusevicha str., 11, Kryvyi Rih, Ukraine, 50027, Ukraine
  • Dmitriy Shvets Kryvyi Rih National University Vitaliya Matusevicha str., 11, Kryvyi Rih, Ukraine, 50027, Ukraine https://orcid.org/0000-0001-5126-6405

DOI:

https://doi.org/10.15587/1729-4061.2018.144003

Keywords:

quality of mineral raw materials, logging of wells, gamma radiation, total iron, magnetic iron

Abstract

The main task of the mining industry is to improve the efficiency of extraction and processing of iron ore. One of the main factors contributing to solving the task is determining the content of iron in the ore body at the initial stage of production chain. Traditional methods of chemical analysis that are widely used at present to achieve this goal do not possess a sufficient degree of responsiveness and require about two hours to obtain the results. That typically does not make it possible to properly adjust the parameters of the technological process of ore processing, but only provides for the opportunity to ascertain the status of the production process at the time of sampling.

Existing methods of accomplishing this task, which possess a sufficient degree of efficiency, are based on the use of direct methods. These include the nuclear-physical (interaction between gamma-radiation and mountain mass), magnetometric (changing the relative magnetic permeability when interacting with magnetic iron), ultrasound (a change in the ultrasonic wave propagation in the examined material) methods.

In order to improve the accuracy of determining the percentage of a mineral component in the examined mountain mass, in this work we have improved the nuclear-physical method for determining the content of total iron in iron ore lumps. The improvement of the method makes it possible to enhance the accuracy of control over a mineral component in the studied material by 1.5 % by registering not only the gamma quanta reflected from the surface, but the absorbed particles as well. We have experimentally established the sensitivity level (K=1.32‒1.38), which characterizes a change in the intensity of the registered radiation due to a change in the content of iron in the irradiated material. We have also established the level of a statistical error (<0.65 %) in order to ensure the permissible measurement accuracy.

Based on a given method, we have proposed an information-measuring system for monitoring, analysis, and forecasting the qualitative characteristics of ore under conditions of an enrichment plant. The application of this system makes it possible for technological personnel to promptly intervene in the production process and to adjust the qualitative-quantitative parameters of ore

Author Biographies

Albert Azaryan, Kryvyi Rih National University Vitaliya Matusevicha str., 11, Kryvyi Rih, Ukraine, 50027

Doctor of Technical Sciences, Professor

Department of modeling and software

Andrey Gritsenko, Kryvyi Rih National University Vitaliya Matusevicha str., 11, Kryvyi Rih, Ukraine, 50027

Researcher

Research section

Annait Trachuk, Kryvyi Rih National University Vitaliya Matusevicha str., 11, Kryvyi Rih, Ukraine, 50027

PhD, Associate Professor

Department of modeling and software

Dmitriy Shvets, Kryvyi Rih National University Vitaliya Matusevicha str., 11, Kryvyi Rih, Ukraine, 50027

Assistant

Department of modeling and software

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Published

2018-10-31

How to Cite

Azaryan, A., Gritsenko, A., Trachuk, A., & Shvets, D. (2018). Development of the method to operatively control quality of iron ore raw materials at open and underground extraction. Eastern-European Journal of Enterprise Technologies, 5(5 (95), 13–19. https://doi.org/10.15587/1729-4061.2018.144003

Issue

Vol. 5 No. 5 (95) (2018): Applied physics

Section

Applied physics

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Copyright (c) 2018 Albert Azaryan, Andrey Gritsenko, Annait Trachuk, Dmitriy Shvets

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