Selective Oil Agglomeration of Lignite

Abstract

In this study, desulfurization and deashing of Adıyaman-Go ¨lbas ¸ı lignite by the agglomeration method were studied. For this purpose, three groups of agglomeration experiments were made. The effects of solid concentration, bridging liquid type and dosage, pH, and screen size on the agglomeration after desliming were investigated in the first group of experiments. The effects of lake water and sea water (the Mediterranean Sea water, the Aegean Sea water, and the Black Sea water) on the agglomeration were investigated in the second group of experiments. The effects of different salts (NaCl, MgCl 2 , and FeCl 3 ) on the agglomeration were investigated in the third group of experiments. Agglomeration results showed that the usage of sea waters and soda lake water in the agglomeration medium had a positive effect on the reduction of total sulfur content of agglomerates. In addition, the usage of NaCl, MgCl 2 , and FeCl 3 in the agglomeration medium had a positive effect on the ash content reduction of the agglomerates.

Research into the process of preparation of Ukrainian coal by the oil aggregation method

“…We shall note that the range of original pulp densities in the conducted experiments, ρ ws =50-600 g/cm 3 , is considerably wider than that in articles [9,[11][12][13][14]. At the same time, lower limits of ρ ws are close (we have 5 %, in [9] -7.5 %, in [11] -11.1 %).…”

“…This factor, according to studies [4,9,[11][12][13][14], is one of the most significant for obtaining quality concentrate and the waste of oiled aggregation of coal. This is confirmed by the results obtained in research.…”

“…The first part of study [14] establishes impact of the following factors on the preparation of brown coal by oil agglomeration: concentration of the solid in the pulp, consumption of oil-binder, type of oil, pH of the liquid phase. They in particular determine the results of deashing and desulphurization of coal.…”