Cleaning of Şırnak Karatepe asphaltites

Download
2009
Demir, Emre
Asphaltite is petroleum originated substance and formed by metamorphism. Turkey has 82 million tons of asphaltite reserves in Sırnak and Silopi region of Southeastern part of Anatolia. The proximate analysis of Sırnak Karatepe asphaltite sample indicated that the ash and sulfur content were 46.86 % and 5.56 %, respectively. In this study, Sırnak Karatepe asphaltite sample was concentrated by gravity separation and flotation methods. The aim of this research was to decrease the ash and sulfur content below 20% and 2%, respectively, which are the requirements of Sırnak Municipality. Gravity based cleaning equipments such as multi gravity separator, shaking table and Falcon concentrator gave no satisfactory results in terms of ash and sulfur removal. The products with lowest ash content were obtained with Falcon concentrator after two stage cleaning of -100 micrometer feed. Flotation parameters of Karatepe asphaltite were also examined during the study. As a result of multi-stage flotation with stage addition of Collector Accoal 9630 and depressant Na2SiO3 , ash content of asphaltite was decreased to 17.59 % with 15.31 % combustible recovery. Even though the ash content specification met by flotation, the sulfur content of cleaned asphaltite (6.68 % S) was more than the sulfur limit of Sırnak Municipality.

Suggestions

Effect of discontinuity roughness and anisotropy on shear strength
Denli, Alper Kaan; Karpuz, Celal; Department of Mining Engineering (2004)
Discontinuity surfaces generally consist of undulations termed as roughness. It is well known that surface roughness plays an important role on the shear strength and shear behavior of discontinuities. However, the effect of roughness will not be the same when the direction of shearing changes. This effect causes variation of shear strength with shearing direction or in other words anisotropy on shear strength. In this thesis, an experimental study was performed to investigate the effect of roughness and an...
Investigation of bit hydraulics for gasified drilling fluids
Doğan, Hüseyin Ali; Özbayoğlu, Mehmet Evren; Department of Petroleum and Natural Gas Engineering (2004)
Accurate determination of the pressure losses at the bit is very important for drilling practices in petroleum industry. In the literature, there are several studies on determination of the pressure losses. Major focus is concentrated on single phase drilling fluids, which is far from accurate estimation of pressure losses for multiphase fluids, i.e., fluids including a liquid and a gas phase, at the bit. Some of these models are valid for multiphase fluids, however, they are either valid for very high gas ...
A computer simulator for ball mill grinding
Yeşilay, Yasemin; Hoşten, Çetin; Department of Mining Engineering (2004)
Ball mill grinding is an important operation in the processing of most minerals, in that it may be used to produce particles of the required size and shape, to liberate minerals from each other for concentration purposes, and to increase the powder surface area. Grinding of minerals is probably the most energy consuming task and optimization of this operation has vital importance in processing plant operations to achieve the lowest operating costs. Predicting the complete product size distribution, mill spe...
Development of a subsidence model for Çayırhan coal mine
Hacıosmanoğlu, M. Esenay; Ünal, Erdal; Department of Mining Engineering (2004)
In this study, subsidence analyses were carried out for panels B14, B12, B10, B02, C12, C10, C08 of Çayirhan Lignite Mine using in-situ subsidence measurements. Using the measurements from stations, installed both parallel and perpendicular to panel-advance direction, subsidence profiles were plotted as a function of time and distance from panel center. Horizontal displacement and strain curves were also plotted and compared with subsidence profiles. There are various methods used for subsidence prediction....
Use of borates as an activating agent for drilling mud bentonites
Toka, Bülent; Arol, Ali İhsan; Department of Mining Engineering (2008)
In drilling technologies, Na-bentonite-water mixtures are used as drilling mud. As the reserves of sodium-bentonite decline, calcium or low-quality bentonites are activated with inorganic salts and/or treated with different types of polymers as an alternative to Na-bentonite. The quality of such bentonites, commonly referred to as extended bentonite may deteriorate under severe drilling conditions, such as; bacterial activity, high temperature etc. It was considered that borates could prevent the deteriorat...
Citation Formats
E. Demir, “Cleaning of Şırnak Karatepe asphaltites,” M.S. - Master of Science, Middle East Technical University, 2009.