abstract

• The combustible recovery and water-carrying properties were characterized for fine coal flotation with focus on the relationship between water-carrying volume and fraction recovery of various size fractions. Diesel and 2-Octanol were used as the collector and frother, and the collector addition of 80 mu L to 240 mu L and the frother addition of 8 mu L to 40 mu L were studied using uniform experimental design method. The combustible recovery rate and water-carrying rate were found to be mainly determined by the frother but by the collector within the collector addition of 240 mu L to 400 mu L and the frother addition of 24 mu L to 40 mu L. The fraction recoveries of ultrafine particles less than 45 mu m were found to linearly increase with the water-carrying volume but decrease with the particle size. The particle of smaller size was found to be more easily entrained by the water carried to the froth products than that of larger size.

publication date

• 2021-01-01

published in

• International Journal of Coal Preparation and Utilization  Journal

keywords

• Coal flotation, fraction recovery, water-carrying volumen, fine slime, flotation rate constant, reagent addition

Digital Object Identifier (DOI)

• 10.1080/19392699.2018.1452738

PubMed ID

start page

• 98-107

end page

volume

• 41

issue

• 2