INNOVATIVE PROCESS LINE FOR MATERIAL SAMPLE PREPARATION
V. Fedoskina1, O. Yu. Svietkina2, K. A. Ziborov3, M. M. Yerisov4, V. O. Fedoskin5
Dnipro University of Technology, Dnipro, Ukraine
Emails: fedoskina.ev@gmail.com, svietkina.o.y@nmu.one, ziborov@nmu.org.ua, erisov@ukr.net, fedoskin.va@ukr.net
Corresponding author:fedoskina.ev@gmail.com
ABSTRACT. The successful establishment and sustainable development of mining enterprises depends on a number of factors, including geological research, management of mineral extraction and processing processes, and sample preparation technology. The sample preparation plants that are currently used have a multi-stage technological process, often with manual transfer of material between technological operations. Standard crushing and grinding equipment with a low degree of grinding, high metal consumption and overall dimensions is used. Separation of material by size also occurs on standard screens, which are poorly suited for sample preparation. The purpose of the work is to substantiate an innovative technological scheme for preparing mineral samples for laboratory analysis. The determining unit of the production line is a vibrating jaw crusher with an inclined crushing chamber, which has a degree of material grinding of more than 100 and allows one to obtain a final product with a particle size of -1 mm in one pass in an open crushing cycle, which reduces the number of overload devices that significantly affect sample clogging with material. Horizontal loading of the source material and unloading of the crushed material makes it possible to arrange all equipment in a horizontal plane, eliminate large-sized metal structures and ensure ease of maintenance. The vibrating screen of the improved design has a complex working profile, which provides a significant increase in the path of transportation of material particles along the sieving surface compared to its length, effective cleaning of the mesh and its visual inspection through the transparent lid, which eliminates clogging of the material of the previous sample. The working surface is a set of sieve cards that allow quick replacement of the worn part of the screening surface. The technical characteristics of the equipment and the general view of a small-sized modular crushing and grinding plant are presented.
Key words: mineral exploration sampling, sample preparation, vibrating jaw crusher, vibrating screen, accuracy of analyses
DOI: https://doi.org/10.58903/dv69110144
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