充气水力旋流器控制有用矿物过磨的研究

STUDY ON CONTROLLING OVERGRINDING OF VALUABLE MATERIALS USING AIR-SPARGED HYDROCYCLONE(ASH)

鉴于充气水力旋流器内分级与浮选作用共存的特征，首次研究了采用改进型充气水力旋流器控制避免细磨回路中细粒级大密度有用矿物的过磨，探讨了该旋流器结构及操作参数的优化以及进料物化参数对旋流器分选性能的影响，提出了一个由充气水力旋流器和普通水力旋流器共同组成的、用于细磨回路中能控制细粒级大密度有用矿物过磨的新型分级系统。

Enlightened based on the separation characteristics in the air-sparged hydrocyclone(ASH)that both classification and flotation exist simultaneously,a modified fied air-sparged hydrocyclone(MASH)was developed to control the overgrinding of valuable materials with higher density in the fine grinding circuit for the first time.Investigations were made on the optimization of the geometric and operation parameters of the MASH,and on the effects of the physicochemical parameters of feed slurry on the MASH separation performance.A new classification system,which could be effectively used to control the overgrinding of valuable materials with higher density in the fine grinding circuit,was developed including MASH and conventional hydrocyclones.