Дослідження впливу схеми роботи дробильно-сортувального заводу на кількісно-якісні показники продукції для наповнювачів бетонів

The state of the crushed stone market determines the release of the most liquid fractions, which quite often requires changes to the technological scheme of crushing and screening plants (CSP). Deviation from the working (main) technological scheme leads to a change in the quantitative and qualitative characteristics of crushed stone products. The production of high-quality crushed stone products is a rather complex and energy-intensive process, in which the last stage of crushing plays a key role. In turn, the efficiency of the equipment at the final stage of processing depends not only on the setting of the latter, but also on the granulometric composition of the feed material. The article is devoted to the question of researching the processes of crushed stone production when the mode of the crushing and sorting complex operation is changed. The three-stage technological scheme of the production of crushed stone products at «Granite Quarry» LLC, which is represented by two cone crushers at the third stage CH440, was analyzed. The paper studies the influence of changes in the operation scheme of the CSP on the quantitative and qualitative indicators of crushed stone products were carried out. Four schemes of plant operation were analyzed and compared in this paper. A sieve analysis of the granulometric composition of the cone crushers feed material of the third (final) stage of crushing was carried out depending on the mode of operation of the CSP. The effect of the modes of operation of the crushing and screening plant on the change in the quantitative and qualitative characteristics of crushed stone products has been established. Dependencies were obtained that make it possible to predict the ratio between crushed stone fractions and content of flat and needle-like grains efficiency depending on the operating mode of the plant.