Authors: V.Ya. Potapov, D.I. Simisinov, M.V. Arkhipov, V.V. Potapov

Title of the article: Justification of parameters of the pneumatic pipeline of the loading device

Year: 2025, Issue: 6, Pages: 51-57

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 629.4.064.2

DOI: 10.26730/1816-4528-2025-6-51-57

Abstract: In the mining industry, when working with light ore materials such as coal, asbestos, muscovite and vermiculite, pneumatic transport is widely used due to its technological effectiveness and cost-effectiveness. One of the key features of pneumatic conveying systems is their ability to move a wide range of bulk materials. Pneumatic pipelines of loading devices play a central role in the functioning of these systems. The quality of the flow is determined by such factors as pressure losses, distribution of material along the perimeter of the pipe, physical and mechanical properties of the transported substance, as well as the size and speed of particles in the air flow. Pressure losses in industrial pneumatic conveying systems, including various sections of the pneumatic pipeline, are due to the following factors: acceleration of the material at the initial stage, movement at a constant speed on horizontal sections, changes in the velocity vector on turns, as well as work on vertical and inclined sections, respectively. A numerical experiment was conducted to study the total pressure losses in horizontal sections of a pneumatic transport system. According to the results of the experiment, for efficient horizontal pneumatic transport it is required that the air flow velocity be higher than the velocity of the transported mixture. When the aeromixture rises along vertical sections of a pneumatic pipeline, the main share of pressure losses occurs due to the material being transported overcoming the force of gravity. Based on the results of the numerical experiment, a mathematical model was developed to determine the key characteristics of a pneumatic transport system, including the velocities of the aerosuspension components and pressure losses in all sections of the pneumatic pipeline. The total pressure losses in horizontal, vertical, inclined and turning sections for various aerosuspensions are considered. The model is intended to optimize the design and operating modes of pneumatic transport systems.

Key words: pneumatic transport pneumatic tubing aerosols energy balance equation transportation models acceleration section horizontal section turns of material pipelines vertical sections inclined lines

Receiving date: 31.10.2025

Approval date: 14.11.2025

Publication date: 18.12.2025

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