Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 16 No. 1 February 2006|
（1. Institute of Mineral Engineering, Northeastern University, Shenyang 110004, China;
2. Department of Process Engineering, University of Stellenbosch, Private Bag X1,
Matieland, Stellenbosch 7602, South Africa Received 18 April 2005; accepted 5 July 2005）
Abstract:The effects of aeration rate and impeller speed on the concentrate sulfur grade and recovery for batch flotation of a complex sulphide ore were investigated. The relationships between the water recovery and solid entrainment were discussed. It is found that the solid entrainment is linearly related to the water recovery regardless of aeration rate and impeller speed, and the higher sulfur recovery at the aeration rate of 2 and 4 L/min for the impeller speed of 1 500 r/min is considered to be the contribution of true flotation. Finally, the sulfur recovery flux is correlated with the bubble surface area flux based on the froth image at the different aeration rates and impeller speeds.
Key words: impeller speed; aeration rate; water recovery; solid entrainment