Upgrading of Kutahya region lignites by mild pyrolysis and high intensity dry magnetic separation

Lignite samples, taken from Kutahya-Seyitomer Power Plant, were used for devolatalisation and desulphurisation experiments, by means of mild pyrolysis followed by High Dry Magnetic Separation. sis experiments were performed in a modified Heinze Retort and important parameters of process, temperature, heating rate and residence time, were studied to determine the optimum conditions. At optimum conditions ofpyrolysis, final temperature of 450°C, heating rate of 7°C/min and residence time of 30 min, up to 61.04 % of sulphur reduction was obtained with 57.11% combustible recovery depending on particle size. Char, obtained at optimum conditions of pyrolysis experiments, was further cleaned by a Permroll HIDM separator. Sulphur reduction enhanced up to 86.55% with 22.67% ash, 0.88% sulphur content and 46.09% combustible recovery, depending on particle size.