2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 4: Meech Intl. Symp. / Mining Operations
| Editors: | Kongoli F, Veiga MM, Anderson C |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 275 pages |
| ISBN: | 978-1-987820-27-0 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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An Outstanding Industrial Symbiosis Opportunity: Marble Quarrying-Thermal Power Production in Muola, Turkey
Naci Emre Altun1;1MIDDLE EAST TECHNICAL UNIVERSITY, MINING ENGINEERING DEPARTMENT, Ankara, Turkey;
Type of Paper: Regular
Id Paper: 486
Topic: 4
Abstract:
Cleaner production, sustainable utilization of resources, maximizing the efficiency of resources beneficiation and zero-waste manufacturing have become the major principles of industrial production. Mining and mineral processing have been under drastic pressure towards the implementation of these principles. Industrial symbiosis is recognized as a vital tool in minimizing the environmental footprint of manufacturing industries and as the most rapidly developing area in the industrial ecology. It represents an effective cooperation between different industries, preferably located at manageable distances, for enhancing the environmental performance, economic benefits and competability of the cooperating sides and minimizing the use of water, energy and raw materials. Considering the waste of a particular branch of production as an input for another application, it provides significant advantages to benefiting parties. Mining and mineral processing are amongst the most significant industries for possible industrial symbiosis partnerships since the materials considered as 'waste' or 'gangue' after mining/mineral processing are naturally input materials for proper manufacturing facilities. Marble production and coal fired thermal power plants were identified as matching industries for symbiosis in this study. In marble production, the overall efficiencies might be as low as 20-30 % and enormous amounts of 'waste' is produced in different forms. Coal fired thermal power plants, on the other hand, are one of the biggest consumers of limestone. SO2 control is a major issue in these plants and finally, ground limestone is sprayed in a slurry form for capturing SO2 in flue gas desulphurization units. Mušla is the leading marble quarrying district in Turkey, producing approximately 2.5 million m3 marble annually. Mušla is also distinguished having three coal fired thermal plants (Yatagan, Yenikoy, Kemerkoy) with a total capacity of 1600 MW. All three thermal power plants have flue gas desulphurization units that use limestone for SO2 abatement. Power production and marble quarrying in the city provides the perfect match for industrial symbiosis, relying on the use of marble wastes as an alternative SO2 sorbent. Wastes of five different marble types from Mušla were evaluated and compared with limestones currently in use in thermal power plants with respect to physical (specific surface area, grindability) and chemical (composition, dissolution behavior) features as well as their capabilities to adsorb SO2. Results showed that the extent of calcite and dolomite is critical for the marble wastes to display comparable dissolution characteristics to limestones. Also, all marble waste samples showed comparable surface areas to limestones. Lower Bond Work Index of the marble wastes than limestones were encountered as another advantage of marble waste utilization over limestones. When the SO2 adsorption capability of the marble wastes were identified using TG-FTIR, it was observed that the wastes of some marble types showed better SO2 capture efficiency than limestones. Consequently, although it might be misleading to consider the wastes of all marble types appropriate for use in SO2 control, those with comparable calcite content could replace limestone usage. Thus, marble quarrying-thermal power production in Mušla is strongly anticipated as a potential opportunity for an effective industrial symbiosis application.