COAL ENGINEERING ›› 2013, Vol. 45 ›› Issue (11): 105-107.doi: 10.11799/ce201311035

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The impact of different ultra-fine slime on coal flotation

  

  • Received:2013-01-29 Revised:2013-02-27 Online:2013-11-10 Published:2013-11-11

Abstract:

The ultra-fine particles which is finer than 0.074 mm in coal slime were divided into three parts: -1.4 kg/L, 1.4~1.8 kg/L and +1.8 kg/L. The three parts were added to the raw coal slime coarser than 0.074 mm respectively. And then timed-release flotation experiments were conducted for these three samples, along with the raw sample and the +0.074 mm raw sample. The results of these five experiments were compared together. It showed that the -1.4kg/L ultra-fine slime would promote the flotation of +0.074 mm raw coal slime whereas the 1.4~1.8 kg/L and +1.8 kg/L ultra-fine slime were harmful to it and the extent of their harm was similar.

Key words: coal slime flotation, ultra-fine slime, timed-release flotation, agent adsorption

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