| Article |
|---|
| Article name |
TEORETICAL FRAMEWORK OF THE SEPARATION PROCESS OF POLYDISPERSE AND POLYMINERAL HYDRO MIXTURES IN THIN-BEDDED FLOW |
| Authors |
Avdeev P.. , Cherkasov V.G. Doctor of Technical Sciences, Professor, cherkasov1948@yandex.ruRubtsov Y.. , |
| Bibliographic description |
|
| Category |
Earth science |
| DOI |
622.766 |
| DOI |
10.21209/2227-9245-2019-25-7-91-96 |
| Article type |
scientific |
| Annotation |
A physico-mathematical model for the allocation of small and thin classes of valuable component from polymineral polydisperse or slurry based on the gravity separation process, the two-phase medium flowing in a multi-channel apparatus is described. Theoretically, the process of separation of a two – phase medium (liquid-solid) in an inclined channel in the laminar regime with the formation of stratified (two-layer) density flows is considered. Efel tails are taken as the initial hydraulic mixture during the enrichment of metal-bearing sands at alluvial deposits. The main objective of the theoretical approach is to establish a geometric and kinematic relationship, taking into account the characteristics of the initial suspension on the separation process by density and size of solid particles. The differential function (γ-function) with subsequent “deformation” into analytical dependences, taking into account the parameters of the thin layer (height, length, channel inclination angle), is accepted as a basic regularity in the development of the mathematical model. The flow stratification conditions are assumed taking into account the transition of the fine solid phase to the sediment and the channel inclination angle. The transition from the distribution function of the solid phase on a one-factor physical feature (hydraulic size) to a two-factor feature (density and particle size) is also given, which makes it possible to estimate the geometric distribution of sedimentary layers taking into account the position of narrow fractions. Such a theoretical approach at the stage of research or design of such separation devices allows to simultaneously link the characteristics of the feedstock, technological and geometric parameters of concentrators of a new type, the technical solutions of which are protected by patents of the Russian Federation. With respect to polymineral hydro mixtures, the results of calculation of the distribution of the solid phase produced by the obtained dependences in a laminar flow with a Reynolds number less than 1000 are presented. |
| Key words |
Keywords: thin-layer space; channel; solid phase; laminar flow regime; distribution function of; slurry; differential relation; physical characteristic; raw; valuable component parameters of the process |
| Article information |
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| References |
References
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| Full article | TEORETICAL FRAMEWORK OF THE SEPARATION PROCESS OF POLYDISPERSE AND POLYMINERAL HYDRO MIXTURES IN THIN-BEDDED FLOW |
