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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 5    No. 4    December 1995

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FLOTATION CLASSIFICATION APPROACH BY CONTROLLING INTERACTIONS BETWEEN PARTICLES
Luo Lin1; Qiu Guanzhou1; Hu Yuehua1; Wang Dianzuo1,He Boquan2

Department of Mineral Engineering; Central South University of Technology; Changsha 410083; (The Nonferrous Metals Society of China; Beijing 100814

Abstract:A novel classification approach termed the flotation classification approach based on controlling interactions between particles was introduced.It differs considerably from the conventional classification processes operating on mechanical forces.During test,the micro-bubble flotation technology was grafted onto hydro-classification.Selective aggregation and dispersion of ultrafine particles have been achieved through governing the interactions in the classification process.A series of laboratory classification tests for -44μm kaolin and -22μm quartz have been conducted on a classification column.As a result,about -10μm classifying product can be obtained from the feeds of kaolin and quartz.In addition,two criteria for the classification were set up.Finally,the theoretical model of flotation classification has been presented based on surface thermodynamics and hydrodynamics.

 

Key words: flotation classification; interactions; theoretical model

ISSN 1672-7029
CN 43-1423/U

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