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The centrifuge offered to the reader's attention is used in a wide variety of industries. From a technical point of view, it is characterized by an elongated, solid, high-speed rotor that results in a high separation factor. This tubular rotor machine is often used in the processing of liquid media with unique properties, for the purpose of their separation (with particles of 0.5-5 μm in size, with a volume concentration of solids of no more than 2%), as well as in cases where emulsions are difficult to separate; In food production – in the processing of fruit juices, bacterial broths. An important segment of the scientific and technical field, when the use of tubular centrifuges in practice, is the fractionation of suspended solids based on them, as well as in the dispersion analysis of highly dispersed and colloidal systems. At the same time, it should be emphasized that, although from the standpoint of optimizing the centrifugation process, the formation of a layer of sediment on the rotor wall, the problem studied here was raised in the works of such scientists as Sokolov V.I., Becker E., Aleksandrov O.E. and others, it has not yet been sufficiently worked out. In this article, on the basis of the scientific position on the given motion of a particle with the so-called critical diameter in a thin-layer liquid flow, a method of step-by-step fractionation of polydisperse powder suspended in liquid in the rotor of a tubular centrifuge is proposed in order to isolate particles of a given size from it. Numerical simulation of the fractionation process is carried out on the test crushed material, which can be used in practical conditions.
The centrifuge offered to the reader's attention is used in a wide variety of industries. From a technical point of view, it is characterized by an elongated, solid, high-speed rotor that results in a high separation factor. This tubular rotor machine is often used in the processing of liquid media with unique properties, for the purpose of their separation (with particles of 0.5-5 μm in size, with a volume concentration of solids of no more than 2%), as well as in cases where emulsions are difficult to separate; In food production – in the processing of fruit juices, bacterial broths. An important segment of the scientific and technical field, when the use of tubular centrifuges in practice, is the fractionation of suspended solids based on them, as well as in the dispersion analysis of highly dispersed and colloidal systems. At the same time, it should be emphasized that, although from the standpoint of optimizing the centrifugation process, the formation of a layer of sediment on the rotor wall, the problem studied here was raised in the works of such scientists as Sokolov V.I., Becker E., Aleksandrov O.E. and others, it has not yet been sufficiently worked out. In this article, on the basis of the scientific position on the given motion of a particle with the so-called critical diameter in a thin-layer liquid flow, a method of step-by-step fractionation of polydisperse powder suspended in liquid in the rotor of a tubular centrifuge is proposed in order to isolate particles of a given size from it. Numerical simulation of the fractionation process is carried out on the test crushed material, which can be used in practical conditions.
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