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- Title
Numerical Analysis and Experimental Study on the Performance of Hydrocyclones with Compound Curved Feeding Bodies.
- Authors
LIANG Zhitao; LI Feng; HAN Hu; WANG Yanchao; JI Xiangfei
- Abstract
Hydrocyclone is a common solid-liquid separation equipment, but due to its own structural limitations, the classification accuracy in the cyclone is not high. As the primary channel for multiphase flow entering the cyclone, the feed body has a significant impact on the classification performance of the cyclone. However, the problems of turbulent diffusion caused by high turbulent flow field in the feed body and low particle classification accuracy caused by collision and compression between particles urgently need to be solved. Therefore, a composite curve feed structure cyclone has been designed, which reduces the proportion of fine particles entering the bottom flow by regulating the internal flow field and particle motion in the feed body, thereby achieving the goal of improving classification accuracy. The numerical analysis method was used to explore the flow field characteristics and classification performance characteristics of five types of hydrocyclones with different feed-body structure: linear feed body, involute feed body, vortex feed body, linear guide feed body, and composite curve feed body. The superiority of the hydrocyclone with composite curve feed body was highlighted, and comprehensive exploration was conducted from the aspects of pressure field, velocity field, classification efficiency, and so on. Finally, experimental exploration was conducted on it. The results show that the composite curve feed body structure has better fine particle classification performance compared to other feed body structures, and the internal flow field is more stable. At the same time, the isobaric surface distribution shows regular changes, and the particle movement is more stable. The tangential velocity of the composite curve feed body is significantly higher than that of other feed body structures, and the particles obtain greater centrifugal driving force, making them easier to classify. The experimental results show that the separation efficiency of the compound curve feed body hydrocyclone is 46.32%, which is 7.32% higher than that of the conventional feed body hydrocyclone, and the content of -24 jum particles in the compound curve underflow is 15.07% lower than that of the conventional one. The content of -24 jutn particles in the overflow is 3.39% higher than that in the conventional type, and the particle classification accuracy is greatly improved.
- Subjects
NUMERICAL analysis; MACHINE separators; MULTIPHASE flow; PARTICLE motion; PARTICULATE matter; TURBULENT flow; MOTION
- Publication
Nonferrous Metals (Mineral Processing Section), 2024, Issue 2, p81
- ISSN
1671-9492
- Publication type
Article
- DOI
10.3969/j.issn.1671-9492.2024.02.012