改进型充气水力旋流器无因次准数分析与研究

ANALYSIS AND STUDY OF DIMENSIONLESS VARIABLES IN THE SEPARATION OF A MODIFIED AIR-SPARGED HYDROCYCLONE

本文对改进型充气水力旋流器用以控制细磨回路中大密度有用矿物过磨时其主要结构参数及操作参数对分离性能的影响进行了研究，为了减少分析的复杂性，本文引入了无因次分析方法。文中主要分析和研究了两个重要无因次准数──溢流口面积与底流口面积之比的无因次面积和充气量与进料流量之比的无因次流量。本研究结果有利于充气水力旋流器的进一步放大研究。

A modified air-sparged hydroclone has been used to reduce the overgrinding of valuable mineralnin fine grindig circuit, and the effects of important design and operating variables on separation perfor-manc e examined. In order to reduce tl1e complexity of the analysis, the separation per formance of theair-sparged hydrocyclone was studied by dimensionless analysis. Two important dimensionless vari-ables, i. e. dimensionless area ratio of overflow area to under flow area and dimensionless flowrate ratioof air flowrate to slurry flowrate, are mainly studied in this paper. The research results will facilitatescale-up procedures for the modified air-sparged hydrocyclone separation system.