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EFFECTS OF PH AND SALT CONCENTRATION ON OIL AGGLOMERATION OF BITUMINOUS COAL

AUTHOR/S: CEBECI, Y.
Sunday 1 August 2010 by Libadmin2002

2nd International Scientific Conference - SGEM2002, www.sgem.org, SGEM2002 Conference Proceedings/ ISBN: 954-918181-2, June 9-15, 2002, 139- 146pp

ABSTRACT

In this study, batch agglomeration tests were conducted with
Zonguldak bituminous coal to determine the effects of kerosene
concentration, pH and salt concentration. In the evaluation of experimental
results, the turbidity values were used.
In the experiments, oil concentrations of 5, 10, 15 and 20% by weight
were used. The low turbidity values were obtained at oil concentration of
20% by weight. Between pH 3 and 11, the change of the turbidity values
were investigated. At the low and high pH values, turbidity values
increased. The lowest turbidity value was obtained at pH ∼7 (pH of tap
water). The ionic strength of medium was increased by using NaCl. It was
shown that ionic strength had an important effect on the extent of
agglomeration at low oil concentration.
As a result, the change of turbidity can be used to determine of
agglomeration behaviour of bituminous coal in different conditions.