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
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. XRD studies were also carried out to view the variations in the organic and inorganic content of the concentrates. Optimum parameter conditions, which provided the most effective cleaning, were determined by the applied model. It was seen that all parameters affected the flotation performance with varying degrees of significance. At optimum conditions, flotation performance increased and the ash yield of the concentrate decreased to 16.81% with 84.10% combustible recovery, and the calorific value increased to 5564.02 kcal/kg. XRD spectra revealed that the extent of mineral matter removal depended on the flotation performance, and the inorganic matter was effectively removed at optimum conditions.


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 (Elsevier BV, 2006-09-01)
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 ...
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...
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...
3-d model studies of alkaline flooding using horizontal wells
Bağcı, Ali Suat (Informa UK Limited, 2004-07-02)
In this study, the effect of sodium hydroxide (NaOH) solution for the improved oil recovery of Garzan (26degreesAP1) crude oil was investigated using two different laboratory models. The effect of injection rate on oil recovery was investigated using a one-dimensional unconsolidated limestone reservoir model. The effect of horizontal and vertical well configurations on oil recovery was also studied using a 3-D physical model and various well configurations. As previously studied, the interfacial tension mea...
Recovery of Turkish Oil Shales by Electromagnetic Heating and Determination of the Dielectric Properties of Oil Shales by an Analytical Method
Hascakir, Berna; Akın, Serhat (American Chemical Society (ACS), 2010-01-01)
The effect of microwave irradiation on the recovery of three different oil shale samples was studied. To enhance the microwave efficiency, three different iron powders (Fe, Fe2O3, and FeCl3) and their three different doses (0.1, 0.5, and 1% by weight, each) were added to the samples as microwave receptors. The doses of each receptor were optimized for each oil shale sample based on the highest oil or gas production value obtained experimentally. During the experimental studies, the temperature distribution ...
Citation Formats
N. E. Altun, H. Hwang, and A. Bagci, “Beneficiation of Himmetoglu oil shale by flotation as a solid fuel substitute. Part 2. Process optimization by a statistical approach,” ENERGY & FUELS, pp. 222–226, 2006, Accessed: 00, 2020. [Online]. Available: