Papers by Murat Erdemoglu
The leaching conditions of chalcopyrite (CuFeS 2) concentrate in a hydrogen peroxide medium were ... more The leaching conditions of chalcopyrite (CuFeS 2) concentrate in a hydrogen peroxide medium were investigated by studying the effects of its leaching parameters, such as stirring speed, temperature, hydrogen peroxide concentration and the particle size of the concentrate on Cu extraction. It was found that stirring speed has no effect on the leaching. Copper extraction from chalcopyrite is directly proportional to hydrogen peroxide concentration, but the extraction decreases at temperatures above 60°C. The maximum copper extraction was obtained with the following conditions without stirring: 240 min of leaching time, 3.0 M hydrogen peroxide concentration, 40°C leaching temperature and 53-75 m particle size fraction.
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Journal of Polytechnic, 2021
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Journal of Colloid and Interface Science, 2006
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Materials Research Bulletin, 2006
... The effect of initial dye concentration on degradation was investigated by varying the initia... more ... The effect of initial dye concentration on degradation was investigated by varying the initial RR-141 concentration from 30 to 60 mg/l at constant irradiation time (70 min), irradiation power (770 W/m 2 ) and the amount of nano-TiO 2 (1 wt.%). The results seen in Fig. ...
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Current Physical Chemistry
Aims: In this work, the effect of milling time on the mechanical alloying of the mixture containe... more Aims: In this work, the effect of milling time on the mechanical alloying of the mixture contained the magnetite concentrate and waste of biomass was investigated. Method: The ore consisting of hematite and magnetite was increased from 49.87% Fe to 67.29% Fe after the enrichment in the low field severe wet magnetic separator with a yield of 78.11%. Waste of biomass used as a carbon source was subjected to carbonization processes at 800 oC for 1440 min and the carbon content was determined as 94.68% and the sulphur content as 0.03%. Result: For the mechanical alloying process, a mixture of concentrated-biomass with a grain size of -45 μm was used such that the stoichiometric ratio of 2. After 5, 10, 15, 30 and 45 minutes of alloying, 90% of the mixture was reduced to 3.89 micron. In the SEM images, cube-like particles were seen along with spherical and narrowly spaced particles depending on the alloying times. After 45 minutes of alloying, the crystalline structure was found to be pa...
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Journal of Dispersion Science and Technology, May 1, 2007
Electrokinetic behavior of pyrophyllite in aqueous solutions of K, Na, Mg, and Ca ions and effect... more Electrokinetic behavior of pyrophyllite in aqueous solutions of K, Na, Mg, and Ca ions and effect of low‐molecular‐weight organic anions like acetate (C2H3O2 ), oxalate (C2O4 ), and citrate (C6H5O7 ) on the zeta potential was investigated. Pyrophyllite has higher negative zeta potential values in the presence of alkaline metal cations than in water, and it comes close to positive
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Http Dx Doi Org 10 1080 01932690500266829, Feb 6, 2007
The magnetic filtration theory was evaluated to intensify the filtration of industrial fluids by ... more The magnetic filtration theory was evaluated to intensify the filtration of industrial fluids by magnetic filters. Effects of filtration velocity and external magnetic field intensity on filter performance were investigated and the dependence of the logarithmic efficiency coefficient on filtration velocity was questioned. It was concluded that change in the magnetic susceptibility of the dispersion particles, caused by external magnetic
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Hydrometallurgy, 2007
ABSTRACT The direct conversion of celestite (SrSO4) to strontium carbonate by mechanochemical pro... more ABSTRACT The direct conversion of celestite (SrSO4) to strontium carbonate by mechanochemical processing was studied under wet milling conditions by varying the amount of sodium carbonate with respect to the stoichiometric amount required for the conversion reaction. The effect of solid to liquid ratio and change of particle size distribution during the milling were examined. The resulting conversion–time curve was fitted using the shrinking particle model. It was observed that celestite completely converted to strontium carbonate within 45 min, when the solid to liquid ratio was 0.1. With 50% excess sodium carbonate was used at a solid to liquid ratio of 0.2 the apparent rate constant was 0.0131 min−1, at a solid to liquid ratio of 0.1 the rate was 0.0211 min−1. The order of mechanochemical conversion was proportional to the 1.21 power of the CO32− concentration.
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Key Engineering Materials, 2004
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Minerals Engineering, 2002
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Minerals Engineering, 2009
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Mineral Processing and Extractive Metallurgy Review, 2012
... 1 , ( P. Somasundaran , Ed.), New York : SME , p. 492 – 524 . View all references). ... Chand... more ... 1 , ( P. Somasundaran , Ed.), New York : SME , p. 492 – 524 . View all references). ... Chander , S. and Sharma , VN , 1980 , “Characterization of fine particles in complex ore processing.” In Fine Particle Processing vol 1 , ( P. Somasundaran , Ed.), New York : SME , p. 525–543 . ...
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Journal of Dispersion Science and Technology, 2007
Electrokinetic behavior of pyrophyllite in aqueous solutions of K, Na, Mg, and Ca ions and effect... more Electrokinetic behavior of pyrophyllite in aqueous solutions of K, Na, Mg, and Ca ions and effect of low‐molecular‐weight organic anions like acetate (C2H3O2 ), oxalate (C2O4 ), and citrate (C6H5O7 ) on the zeta potential was investigated. Pyrophyllite has higher negative zeta potential values in the presence of alkaline metal cations than in water, and it comes close to positive
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Journal of Dispersion Science and Technology, 2006
... DOI: 10.1080/01932690500266829 Musa Sarıkaya a , Teymuraz Abbasov b * & Murat Erdemoğlu a... more ... DOI: 10.1080/01932690500266829 Musa Sarıkaya a , Teymuraz Abbasov b * & Murat Erdemoğlu a ... that optimum filtration velocity of the liquid in magnetic filter is about 1000–1200 m/h, while others proved that optimum velocity is not higher than 200–300 m/h, for H<150 kA/m, L ...
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Papers by Murat Erdemoglu