Technological and ecological developments in the modern thermal rower plants [Modern termik santrallerde teknolojik ve ekolojik geli§meler]

Boren;DEMiR Export;et al;metso Expect results;Outotec;TMMOB Maden Muhendisleri Odasi23rd International Mining Congress and Exhibition of Turkey, IMCET 2013 -- 16 April 2013 through 19 April 2013 -- Antalya -- 105453The rapid increase in worldwide energy demands and its environmental impacts directs countries for more strategic energy policies. In terms of environmental impact of energy and security of supply, there is no source which has zero risk. In 21 century, coal is regarded as the world's most important and reliable source of energy. Our country is facing a serious energy supply security. In this process, the most rational thing can be done is to use the limited resources efficiently, economic and ecologically. Today, in the level achieved technologically, the capacity of conventional thermal power plants must be definitely improved and required rehabilitation. Carbon capture and storage (CCS) techniques have been developed the concept of traditional availability of fossil resources. Furthermore, to adopt the terms of mitigation of carbon dioxide (CO2), the use of different areas of CO2 such as chemical, biological and biotechnological products, has been investigated. It can be seen in western European countries the best practice examples of this. In this study, in order to contribute our country's energy policies and strategies and acquire new technologies to the sector, technological and ecological developments in modern thermal power plants were examined

Rehabilitation of water and environment of the TKI - GELI/YLI opencast mine lakes [TKİ - GELİ/YLİ açi{dotless}k i·şletme göletlerinde su ve Çevre rehabilitasyonu]

Boren;DEMiR Export;et al;metso Expect results;Outotec;TMMOB Maden Muhendisleri Odasi23rd International Mining Congress and Exhibition of Turkey, IMCET 2013 -- 16 April 2013 through 19 April 2013 -- Antalya -- 105453During the search, production and enrichment process of mining operations the air, soil, water resources and living organisms are affected adversely. In coal opencast production, with the rise of surface water and ground water level large or small ponds are composed. The most important environmental problems of these ponds are low pH (acidic characteristic) and high metal concentrations (Fe, Mn, Al, Cu, Pb, Zn etc.) of these ponds, besides the sulfide minerals containing (S04) and the waste materials. These ponds needed to be rehabilitated for is one the sustainability of natural resources. In this study, the average pH values 6.22-7.79, turbidity (NTU) 0.63-6.71, sulphate content 840-1720 mg/L, KOI 2.27-61.5mg/L and electrical conductivity 1.72 -2.71 mS/cm have been measured during the monitoring study of three different lignite opencast mine post-production lakes of the TKI -GELI and YLI. The results were evaluated within the framework of relevant laws and regulations. Analyses were performed in three-month periods

A quality classification of building stones from P-wave velocity and its application to stone cutting with gang saws

P-wave velocity measurements were carried out on 22 large limestone blocks in a stone processing plant. In the laboratory, P-wave velocity of core samples was measured to obtain intact rock velocity. The square root of the ratio of the velocity of the large stone block to the velocity of the core specimen was called the velocity ratio index (VRI) and a quality classification for large building stones was suggested. In addition, the applicability of the established classification to stone cutting with gang saws was checked. It was concluded that the quality classification and estimation of slab production efficiency of the building stones can easily be made by ultrasonic measurements. However, the study was carried out only in limestone. Further study must be conducted to check the validity of the obtained results for the other rock types. © The Southern African Institute of Mining and Metallurgy, 2007