The flotation of fine (− 0.5 mm) low rank or oxidized coal is difficult to achieve with the
common coal flotation collectors like kerosene, fuel oil or diesel oil (oily collector). The …

Low rank/oxidized coals are difficult to float with oily collectors. The presence of polar
hydroxyl, carbonyl, phenol groups and some peroxide type oxygenated moieties on the …

Coal flotation is a complex process involving several phases (particles, oil droplets and air
bubbles). These phases simultaneously interact with each other and with other species such …

The low rank or oxidized coals show unpleasant flotation behaviour. The non-coking coal
from Talcher, containing 26.8% ash, 4.9% moisture, 35.7% volatile matter and 1% oxygen …

In this paper, the flotation method has been used for the preparation and beneficiation of
coal samples. The Plackett–Burman methodology has been applied to design of …

I would like to express my deepest thanks, gratitude and appreciation to Prof. Dr. Eng. Jan
Drzymała, my supervisor, first for his kind hospitality during my stay in Poland, second for his …