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Chemical and Petroleum Engineering - The processes of separation of impurities of particles of different sizes are analyzed under conditions of irregularity of structural and kinematic parameters... 相似文献
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Dolgunin V. N. Ivanov O. O. Ryabova E. A. 《Theoretical Foundations of Chemical Engineering》2019,53(2):222-234
Theoretical Foundations of Chemical Engineering - A controlled segregated process flows principle was used to design a process of continuous mixing of granular materials with intermittent dosing of... 相似文献
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V. N. Dolgunin V. Ya. Borshchev P. A. Ivanov 《Theoretical Foundations of Chemical Engineering》2005,39(5):548-554
An experimental study is performed to analyze the equation of state of a granular medium, which relates its dilatancy, shear rate, and pressure by an analogy between a granular medium under rapid shear and a dense gas. A method is developed for the contactless determination of the solid-phase concentration distribution in the two-dimensional flow of a granular medium using x-ray analysis. The method is used to explore the concentration profiles in rapid gravity flows of ceramic particles down a rough incline. The adequacy of the equation of state of a granular medium under rapid shear and for unordinary properties of the gravity flow down a rough incline is directly confirmed. 相似文献
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V. N. Dolgunin A. A. Ukolov O. O. Ivanov 《Theoretical Foundations of Chemical Engineering》2006,40(4):393-404
An experimental analytical method for determining the kinetic segregation coefficient in the rapid gravity flow of a granular material down a rough incline is proposed. It is found that it is possible to predict the velocity of transverse displacement of individual large and small particles in the rapid gravity flow using a single kinetic segregation coefficient for different particle sizes and structural and kinematic characteristics of the flow. A previously proposed equation of segregation kinetics is refined, and its predictive power is analyzed. 相似文献
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V. N. Dolgunin O. O. Ivanov A. A. Ukolov A. N. Kudi 《Theoretical Foundations of Chemical Engineering》2014,48(4):404-413
General principles of the control of segregated flows of nonuniform particles were developed to intensify the technological processes and enhance the functionality of equipment for processing granular materials. Some results of studying the performance characteristics of a drum apparatus with controlled segregated flows of granular materials in the processes of separation, mixing, and heat and mass exchange at an adjustable ratio of processing times for nonuniform particles were given. 相似文献
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V. Ya. Borschev V. N. Dolgunin P. A. Ivanov 《Theoretical Foundations of Chemical Engineering》2008,42(3):331-335
Interaction of nonelastic incoherent spherical particles in a rapid gravity flow is analyzed. The analysis provides a refinement for the relationship between the pressure, dilatancy, and temperature of the granular medium (energy of mutual displacements of the particles). The equation of state obtained for the granular medium establishes the determined interrelation of the parameters of a rapid gravity flow of cohesionless nonelastic spherical particles and for the first time makes it possible to evaluate the effect of various forms of mutual displacement of particles on the dilatancy of the granular material during a rapid shift. The adequacy of the equation of state of the granular medium is confirmed with the use of the X-ray diffraction method. 相似文献
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