Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products, Computed Properties of C3H6Br2, 109-64-8, Name is 1,3-Dibromopropane, molecular formula is C3H6Br2, belongs to bromides-buliding-blocks compound. In a document, author is Zhen, Kunkun, introduce the new discover.
Flotation Performance of Low-rank Coal in the Presence of Cetyltrimethyl Ammonium Bromide
The flotation enhancement mechanism and flotation kinetics of low-rank coal in the presence of cetyltrimethyl ammonium bromide (CTAB) were investigated. The contact angle of the coal sample increased by 46.07% and the attachment time between coal particles and a single air bubble decreased by 85.79% with increasing the concentrations of CTAB from 0 to 1 x 10(-4) M. Low concentrations of CTAB enhanced the flotation performance of low-rank coal, and the concentrate yield significantly increased by up to 8.59 percentage points with increasing the concentrations of CTAB from 0 to 1 x 10(-5) M at the cost of a lower increase in the ash content. However, the selectivity was reduced at high CTAB concentrations (5 x 10(-5) M and 10(-4) M). Six kinetic flotation models were employed to fit the flotation test data using the 1stOpt analysis software; the flotation rate constant (k), the maximum combustible recovery (epsilon (infinity)), the correlation coefficient (R (2)) and the modified flotation rate constant (k (m)) were calculated. Most models showed that the modified rate constant and the maximum combustible recovery of low-rank coal increased with the increasing concentrations of CTAB.
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