Yazar "Koca, Hüseyin" için listeleme
-
Beneficiation of graphite fines from moulding factory wastes
Koca, Sabiha; Koca, Hüseyin (SAGE Publications LTD, 2005)As the costs of waste disposal increase, more attention is being placed upon the re-use and recycling of valuable minerals contained within the waste streams. In this article, the waste streams from a moulding factory were ... -
Carrier flotation of alunite from kaolin clay
Koca, Sabiha; Koca, Hüseyin (Elsevier, 2000)A kaolin sample with high SO3 content, obtained from the Bali{dotless}kesir-Si{dotless}ndi{dotless}rgi{dotless} region, was used to study separation of alunite from kaolin by carrier flotation. Several parameters believed ... -
Contact angle measurements on lignite surface
Koca, Sabiha; Bektaş, Y.; Koca, Hüseyin (2010)Froth flotation has been widely used for cleaning and desulfurisation of coals for many decades all over the world. There is a close relationship between floatability of minerals and contact angle. Therefore surface ... -
Conversion of coal-fired bottom ash to fuel and construction materials
Koca, Hüseyin; Aksoy, Derya Oz; Uçar, Reyhan; Koca, Sabiha (Taylor & Francis LTD, 2017)In this study, solid wastes taken from Seyitomer coal-fired power plant bottom ashes were subjected to experimental research to obtain a carbon-rich fraction. The possible recycling opportunities of remaining inorganic ... -
Desulphurization of lignites by slow, fast, and flash pyrolysis and high intensity dry magnetic separation
Koca, Hüseyin; Koçkar, Ömer Mete; Koca, Sabiha (Taylor & Francis Inc, 2007)Slow, fast and flash pyrolysis followed by high intensity dry magnetic ( HIDM) separation experiments were conducted to obtain improved solid fuels. Pyrolysis experiments were performed in three different apparatus, and ... -
Determination of slacking characteristics of some Turkish lignites
Koca, Hüseyin (Inst Mining Metallurgy, 1998)… -
Determination of synergetic effect in co-pyrolysis of lignite and waste tyre
Onay, Özlem; Koca, Hüseyin (Elsevier Sci LTD, 2015)An attempt was made to investigate potential synergistic activities between waste tyre and lignite during co-pyrolysis. The parameters such as blending ratios of waste tyre and lignite, final pyrolysis temperature, heating ... -
Effects of wollastonite and barite on the physical properties of a ceramic body
Koca, Sabiha; Koca, Hüseyin (Techna Srl, 2004)Ceramic Factory, located Mid-West of Turkey, produces wall,and floor tiles. The factory recipe consists mainly of clay, pegmatite, quartz, albite and calcite. Wollastonite and barite were introduced into the factory recipe ... -
Evaluation of combined lignite cleaning processes, flotation and microbial treatment, and its modelling by Box Behnken methodology
Koca, Sabiha; Aksoy, Derya Oz; Çabuk, Ahmet; Çelik, Pınar Aytar; Sagol, Ercan; Toptas, Yağmur; Koca, Hüseyin (Elsevier Sci LTD, 2017)In this study, first, the physicochemical cleaning of Cayirhan region's low-quality lignites was investigated by flotation to reduce ash content. In the flotation experiments, the effects of collector dosage, frother dosage, ... -
Floatability of Eskisehir Koyunagili Region Lignite Fines
Aksoy, Derya Öz; Koca, Sabiha; Koca, Hüseyin (Int Scientific Conference Sgem, 2010)In this work, samples were taken from Koyunagili Lignites Company Washing Plant feed and were subjected to extensive research to determine the floatability of lignite fines. The optimum conditions of flotation were determined ... -
Flotation of colemanite from realgar
Koca, Sabiha; Savaş, M; Koca, Hüseyin (Pergamon-Elsevier Science LTD, 2003)Pure colemanite and realgar crystals, collected from Emet Colemanite deposit in Kutahya, Turkey, were used to determine the adsorption mechanisms of flotation reagents on mineral surfaces. The floatability of pure minerals ... -
Isolation and characterization of native microorganism from Turkish lignite and usability at fungal desulphurization
Aytar, Pınar; Aksoy, Derya Oz; Toptas, Yağmur; Çabuk, Ahmet; Koca, Sabiha; Koca, Hüseyin (Elsevier Sci LTD, 2014)In this study, microorganisms were isolated from Mihaliccik region (Eskisehir, Turkey) lignites with low rank and high ash and sulphur content. A series of heavy liquids (from 1.3 g/ml to 1.9 g/ml) were used to determine ... -
Physical and physicochemical cleaning of lignite and the effect of cleaning on biodesulfurization
Aksoy, Derya Öz; Aytar, Pınar; Toptas, Yağmur; Çabuk, Ahmet; Koca, Sabiha; Koca, Hüseyin (Elsevier Sci LTD, 2014)In this work, physical, physicochemical and biological processes were combined to decrease the sulfur and ash content of finely ground coal. Two separation methods - flotation and a multigravity separator (MGS) - were ... -
Recovering of fine coal particles from tailing ponds of Ankara-Alpagut-Dodurga coal washing plant
Koca, Hüseyin; Koca, Sabiha; Karaoğlu, M (A A Balkema Publishers, 2000)In this work, samples from tailing ponds of TKI Alpagut-Dodurga Lignites Company Coal Washery were subjected to extensive research to recover clean fine coal particles, by means of gravity methods. The optimum conditions ... -
Recovering of fine coal particles from tailing ponds of TKI Alpagut-Dodurga coal washing plant
Koca, Hüseyin; Koca, Sabiha; Karaoğlu, M (A A Balkema Publishers, 2000)In this work, samples from tailing ponds of TKI Alpagut-Dodurga Lignites Company Coal Washery were subjected to extensive research to recover clean fine coal particles, by means of gravity methods. The optimum conditions ... -
Recycling of coal combustion wastes
Öz, Derya; Koca, Sabina; Koca, Hüseyin (SAGE Publications LTD, 2009)The separation of unburned carbon from coal-fired power plant bottom ashes was conducted in order to increase the possibility of the recycling of coal combustion wastes. A two-stage flotation technique was used for this ... -
Recycling of thermal power plant bottom ashes
Koca, Sabiha; Öz, D.; Koca, Hüseyin (2006)Beneficiation of unburned carbon was conducted in order to increase the possibility of the recycling of coal fired power plant bottom ashes. Two stage flotation techniques were used for this study. In the flotation experiments ... -
Upgrading of Kutahya region lignites by mild pyrolysis and high intensity dry magnetic separation
Koca, Hüseyin; Koca, Sabiha; Koçkar, Ömer Mete (Pergamon-Elsevier Science LTD, 2000)Lignite samples, taken from Kutahya-Seyitomer Power Plant, were used for devolatalisation arid desulphurisation experiments, by means of mild pyrolysis followed by High Intensity Dry Magnetic Separation. Pyrolysis experiments ... -
The Utilization of Unsaleable Lignite Fines at Eskisehir Koyunagili Region Lignite Deposits
Aksoy, Derya Öz; Koca, Sabiha; Koca, Hüseyin (Taylor & Francis Inc, 2012)Samples taken from stock piles of Koyunagili Lignites Company preparation plant were cleaned by means of gravity methods to obtain a saleable product. The optimum conditions of separation were determined under the laboratory ...
