METHODOLOGY AND EXPERIMENTAL SETUP FOR THE STUDY OF RELATIVE ABRASIVENESS OF BULK SOLIDS
Akimbek G.A. Aliyarov B.K. Badaker V.C. Akimbekova S.A.
2022National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2022#2022Issue 114 - 20 pp.
This paper presents preliminary results of determining the coefficient of relative abrasiveness of various bulk materials (Ekibastuz coal, Karazhyra, Shubarkol, Oikaragai and volcanic stone). Determination of the critical velocity of the bulk solids, which eliminates the change in size of particles through grinding at abrasion of the studied material samples. In order to reveal the influence of sample and abrasive material properties, experiments were carried out to study abrasiveness at different combinations of abrasives and samples. It is emphasized that the abrasiveness of the material under study is determined relative to the material recognized as a reference material. In particular, the abrasive material is unloaded completely after a certain period, and it is checked whether the original particle size and facets of the material under examination are maintained. Determining this, a kind of critical speed of mutual movement of samples and wear material is also one of the parameters of the research. In the proposed device, the abrasiveness of the bulk material in a non-ventilated mill is determined by the intensity of abrasion of the abrasives at different temperatures. As in the case of coal grinding capacity research, this device allows to determine the abrasiveness relative to the substance declared as a reference one.
Abrasion , Abrasiveness of bulk materials , Abrasivity coefficient , Angle , Coal , Energy , Material , Speed , Stone , Wear
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Almaty University of Energy and Communications named after G. Daukeev, Almaty, Kazakhstan
Energy and Transport Sector, UNECE Department, Geneva, Switzerland
Abai Kazakh National Pedagogical University, Almaty, Kazakhstan
Almaty University of Energy and Communications named after G. Daukeev
Energy and Transport Sector
Abai Kazakh National Pedagogical University
10 лет помогаем публиковать статьи Международный издатель
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