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 …

Only when problems in ultrafine coal particle beneficiation process are well understood and
clarified, efficient methods can be devised to recover ultrafine coal particles in an …

Low-rank coal (LRC) is difficult to float using oily collectors due to poor floatability resulted
from its abundant oxygen-containing groups. In recent years, numbers of emulsified …

The flotation upgrading of low-rank-coal is more difficult to achieve than that of bituminous
and/or anthracite coal, especially for micro-fine coal slime, because of developed porosity …

A fundamental investigation was carried out on coal–coal, kaolinite–kaolinite, and coal–
kaolinite interactions using the atomic force microscopy colloidal probe technique at different …

Solid-liquid separation to dewater mine tailings is critical to transforming tailings dams that
are hazardous to the environment and surrounding communities into safer and sustainable …

The beneficiation of oxidized coal is difficult to achieve by conventional flotation with oily
collectors. Oxidized coal samples were prepared by the peroxide solution oxidation and a …

The oxidized coal should be well recovered as the demand for energy is increasing. But the
hydrophobicity of oxidized coal is much lower than that of fresh coal, the improvement in …

In this investigation, a mixed collector (MC) of dodecane and n-valeric acid was used to
improve low rank coal flotation. Fourier transformation infrared spectroscopy (FTIR) …

It is difficult to yield a high combustible matter recovery in the flotation of low rank coal with
common oily collectors. This study focuses on the enhancement in flotation performance of …