Mining of Mineral Deposits

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Parameters determination of hydromechanization technologies for the dumps development as technogenic deposits

Borys Blyuss1, Yevhen Semenenko1, Olha Medvedieva1, Serhii Kyrychko1, Aibolat Karatayev2

1Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Dnipro, 49005, Ukraine

2Zhezkazgan Baikonurov University, Zhezkazgan, 100600, Kazakhstan

Min. miner. depos. 2020, 14(1):51-61

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      Purpose. Determination and substantiation of the hydromechanization technologies parameters and the hydraulic transport operation modes for mining the technogenic deposits formed as a result of the enrichment waste storing in tailing dumps of mining and processing enterprises.

      Methods. A comprehensive multi-stage analytical approach has been used in a paper when performing research. Initially, in order to substantiate the hydromechanization technologies parameters, the parameters of the pulp-preparation unit have been analytically determined in this paper, which are limited by the value of the upper dam edge, taking into account the types of hydraulic mixture. At the second stage, dependences have been set for calculating the critical velocity of hydraulic transporting the pulps with different concentration (low, mean, and high). The next research stage was to determine the head and rate specification (HRS) of the hydrotransport pipeline and the required capacity of the hydraulic mixture, which will enable substantiating the parameters for the corresponding mining complex in the technogenic deposits development.

      Findings. A critical pipeline diameter has been set with the prescribed parameters of the mining complex and the adopted pulp preparation system. Dependences have been found for calculating the critical velocity of hydraulic transportation of mean- and highly-concentrated pulps. The head and rate specifications have been determined of the tailing hydrotransport pipeline.

      Originality.For the first time it has been revealed that the critical diameter value is determined by the product of two terms – the first one takes into account the effect of the mining complex productivity, and the second – the dependence on the pulp preparation system parameters. This makes possible to control the parameters and modes of hydromechanization technologies when mining technogenic deposits formed as a result of storing the enrichment waste in tailing ponds.

      Practical implications. The “Recommendations for substantiating the parameters of the processes of accumulating capacity restoring of a pond with the use of hydromechanization devices” and “Methods for calculating the parameters for hydraulic transportation of highly-concentrated hydraulic mixtures”, have been developed, which may be useful for design organizations and mining-metallurgical enterprises to provide additional volumes of raw material output and increase the tailing ponds lifetime.

      Keywords: hydraulic transport, technogenic deposits, hydraulic mixture, head and rate specification (HRS), high concentration


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