BRIQUETTING OF AFSIN-ELBISTAN LIGNITE

In this study, low-quality Afsin-Elbistan lignite was mixed with a hig h-quality Siberian bituminous coal and optimum briquetting conditions were investigated for blends with and without binder materials. The bl ends of lignite and bituminous coal were prepared to contain 30, 40, a nd 50% bituminous coal and briquetted under pressures of 566 MPa and 7 08 MPa. The blends of lignite and bituminous coal were also briquetted using sunflower shell, sawdust and molasses as additives. In these ex periments, the percentage of the Lignite in the blends was fixed at 50 %, so that the sum of the percentages of the bituminous coal and binde r additive was always 50%. In this way, the low-grade lignite and high -quality bituminous coal dust are converted into a compact and stable fuel which has a higher quality. (C) 1998 Elsevier Science B.V. All ri ghts reserved.