Evaluation of a Turkish low quality oil shale by flotation as a clean energy source: Material characterization and determination of flotation behavior

Altun, Naci Emre
Hwang, Jiann-Yang
Bagci, A. Suat
Evaluation possibility of a low quality Turkish oil shale from Beypazari, Ankara as an alternative clean solid fuel by froth flotation technique was investigated. Oil shale sample was characterized with mineralogical analysis, XRD and FTIR spectrum studies for its mineral content and surface characteristics. The flotation behavior of the sample and extent of cleaning were determined with respect to non-ionizing and ionizing collectors of anionic and cationic types. The effects of collector dosages and pulp pH on the cleaning performance were investigated. XRD analysis showed that the majority of the inorganic matter was constituted by carbonates, montmorillonite, quartz and feldspar while the sample was poor in organic content. In the FTIR spectrum, strong adsorption bands due to oxygen rich carboxyl groups were observed while the characteristic bands of organic groups were in weak forms. The sample was characterized as a fulvic material with low organic content. Ash content and combustible recovery results showed that cleaning of Beypazari oil shale was a difficult process on accounts of the high inorganic content and fulvic character of the sample. The most effective cleaning was obtained with amine type collectors. With amines, ash could be reduced from 69.88% to 53.10% with 58.64% combustible recovery using 800 g/ton Armoflote 17 at natural pulp pH.


Beneficiation of Himmetoglu oil shale by flotation as a solid fuel substitute. Part 2. Process optimization by a statistical approach
Altun, Naci Emre; Hwang, HY; Bagci, AS (American Chemical Society (ACS), 2006-01-01)
The effects of the important flotation parameters on the cleaning process of the Himmetoglu oil shale from Turkey were investigated. The individual and multiple interaction effects of conditioning time, flotation time, pulp density, particle size, and frother dosage were determined using statistical analysis and factorial design of experiments. The influence of these parameters on the cleaning performance were evaluated in terms of ash yield, calorific value, and combustible recovery of the concentrates. XR...
Application of predictive Enhanced Oil Recovery models on a very heavy oil field
Kök, Mustafa Verşan; Akın, Serhat (Informa UK Limited, 2001-12-01)
In this study, several predictive enhanced oil recovery (EOR) techniques are used to evaluate potential thermal oil recovery techniques that could be applied on a very heavy oil (10-12°API) field located in Southeast Turkey. Two of the EOR techniques were found to be applicable after the screening process: in situ combustion and steam injection. Sensitivity of the processes to several operating parameters, such as steam injection rate, air injection rate, and steam quality, were established. It was observed...
Experimental and Numerical Simulation of Oil Recovery from Oil Shales by Electrical Heating
Hascakir, Bema; Babadagli, Tayfun; Akın, Serhat (American Chemical Society (ACS), 2008-11-01)
The recovery characteristics of four different oil shale samples were tested experimentally using the retort technique. To accomplish efficient temperature distribution, the thermal conductivity of the oil shale samples was increased by the addition of three different iron powders. The doses of iron powders were optimized for each oil shale sample based on the highest oil production value experimentally. The experiments were then modeled using the electrical heating option of a commercial reservoir simulato...
Utilization of fine coal tailings by flotation using ionic reagents
Sis, H; Ozbayoglu, G; Sarikaya, M (Informa UK Limited, 2004-08-01)
Fatty acid type ionic collectors were used as an alternative to conventional oily collectors, kerosene, and pine oil mixture in the flotation of coal tailing with 46.1% ash. The conventional collectors could not reduce the ash content of the concentrate below 22%. On the other hand, ionic collectors were found to be significantly better at reducing the ash content down to 13%. It was concluded that despite their lower flotation yield and higher consumptions, certain ionic collectors could be used successful...
Determination of wettability and its effect on waterflood performance in limestone medium
Karabakal, U (American Chemical Society (ACS), 2004-03-01)
Wettability measurement methods, the effect of wettability on fluid distribution, and fluid flow in porous media were discussed, and the influence of rock wettability on the relative permeability and recovery of oil by waterflooding were investigated. Experimental studies were conducted on a total of 23 core plugs from two different limestone formations. Synthetic brine (NaCl solution) and mineral oil, which has a viscosity ratio of similar to10, were used as the test fluids. Core samples, saturated with sy...
Citation Formats
N. E. Altun, J.-Y. Hwang, and A. S. Bagci, “Evaluation of a Turkish low quality oil shale by flotation as a clean energy source: Material characterization and determination of flotation behavior,” FUEL PROCESSING TECHNOLOGY, pp. 783–791, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43141.