Scientific Mining Journal

Scientific Mining Journal

Volume 55 - No 3 (September 2016)
Investigation of Concentration Of Complex Cu-Zn Ore In Artvin Murgul Region By Using The Jameson Cell ( Orjinal Araştırma )
DOI 5-16 Cengiz Karagüzel, Oktay Şahbaz, Kenan Oğul, Ali Uçar
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In this research, the application of Jameson cell for the first time has been applied to Artvin – Murgul`s copper zinc ore. In the frame of the present study, complex copper-zinc ore, obtained from the Eastern Blacksea Region, was difficult to float characteristics due to the oxidization and fine liberation size was examined. The mineralogical features and liberation size were determined in the study and performance of the Jameson cell for the sample has been figured out. According to results obtained from the one stage of flotation, the floating part having 12% Cu grade with the recovery of 79% was obtained from the sample having 2% Cu.

Old and New Technologies in Dewatering Of Coal Plant Slurries
DOI 17-26 Hasan Hacıfazlıoğlu

Dewatering is needed to gain economy slime coals discarded from coal washing facilities, remove the problems created for environment and recovery of washing water. Approximately 2 tons of water is needed to wash 1 ton raw coal in coal washing facilities and sent to thickener with 1-3% solid matter rating at the last phase of this process. Solid rating of coal precipitated in thickener could up to 35% and some part of water could recover by the help of thickener. When advanced dewatering is needed filters are used compulsorily. In filters humidity of slime coal can reduce up to 15%. In this research new and old technologic equipments introduced developed for dewatering of coal slimes.

A General Overview of Pumice Mining in Van and Bitlis Provinces
DOI 27-34 Ogün Ozan Varol

In this literature study, the general characteristics of pumice stone are presented and the fact that more than 50% of total pumice reserve in our country exists in Bitlis and Van provinces is emphasized. Pumice with a hardness of 5-6 in accordance with the Mohs hardness scale and a specific gravity of 1-2 gr/cm3 has a variety of application areas ranging from construction and agriculture sectors to chemical industry. Mining with simple methods is an additional advantage of pumice. The maximum mining yield cannot be achieved and the pumice reserves are severely destroyed due to improper mining operations across both provinces with very high reserves. In case sufficient attention is paid to pumice mining in Van and Bitlis provinces,

Economic Potential and Environmental Characterization of Waste of Printed Circuit Boards
DOI 35-44 Ersin Yener Yazıcı, Hacı Deveci

 Waste electrical and electronic equipments (WEEE or e-waste) contain hazardous organic and inorganic substances. On the other hand, WEEE is an important secondary resource due to its base (mainly Cu) and precious metals (Au, Ag and Pd) content. Improper management of this waste stream leads to economic losses as well as environmental pollution if disposed in landfills with municipal wastes. The major part of heavy and precious metals in WEEE is present in waste of printed circuit boards (WPCB). This study highlights the economic potential of WPCB with regards to its base and precious metal content. In addition, environmental characterisation procedures were tested using WPCB (18.5% Cu, 86 g/t Au, 694 g/t Ag and 97 g/t Pd) collected from obsolete computers. TCLP test (Toxicity Characteristic Leaching Procedure) results showed that WPCB should be classified as "hazardous waste" due to high lead (Pb) concentration in the leachate. In the SPLP (Synthetic Precipitation Leaching Procedure) and EN 12457-2 (European Standard Leaching Test) tests, some metals (Ba/Al/Pb/Cu) also determined to be highly solubilised. These results indicated that recovery of metals from WEEE through recycling/ recovery processes is the most suitable route for proper management compared with disposing these wastes in landfills.