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| 1 | Investigation on microwave heating for direct leaching of chalcopyrite ores and concentrates显示文摘The use of microwave energy in materials processing is a relatively new development presenting numerous advantages because of the rapid heating feature. Microwave technology has great potential to improve the extraction efficiency of metals in terms of both a reduction in required leaching time and an increase in the recovery of valuable metals. This method is especially pertinent in view of the increased demand for environment-friendly processes. In the present study, the influence of microwave heating on the direct leaching of chalcopyrite ores and concentrates were investigated. The results of microwave leaching experiments were compared with those obtained under conventional conditions. During these processes, parameters such as leaching media, temperature, and time have been worked to determine the optimum conditions for proper copper dissolution. Experimental results show that microwave leaching is more efficient than conventional leaching. The optimum leaching conditions for microwave leaching are the solid-to-liquid ratio of 1:100 g/mL, the temperature of 140℃, the solution of 0.5 M H2SO4 + 0.05 M Fe2(SO4)3 , and the time of 1 h. | Kubra Onol Muhlis Nezihi Saridede | 2013 | International Journal of Minerals,Metallurgy and Materials2013，20，3： | 5 |
| 2 | Use of ionic liquid in leaching process of brass wastes for copper and zinc recovery显示文摘Brass ash from the industrial brass manufacturer in Turkey was leached using the solutions of ionic liquid(IL)1-butyl-3-methyl-imidazolium hydrogen sulfate([bmim]HSO4)at ambient pressure in the presence of hydrogen peroxide(H2O2)and potassium peroxymonosulfate(oxone)as the oxidants.Parameters affecting leaching efficiency,such as dissolution time,IL concentration,and oxidizing agent addition,were investigated.The results show that[bmim]HSO4is an efficient IL for the brass ash leaching,providing the dissolution efficiencies of 99%for Zn and 24.82%for Cu at a concentration of 50vol%[bmim]HSO4in the aqueous solution without any oxidant.However,more than 99%of zinc and82%of copper are leached by the addition of 50vol%H2O2to the[bmim]HSO4solution.Nevertheless,the oxone does not show the promising oxidant behavior in leaching using[bmim]HSO. | Ayfer Kilicarslan Muhlis Nezihi Saridede Srecko Stopic Bernd Friedrich | 2014 | International Journal of Minerals,Metallurgy and Materials2014，21，2： | 2 |
| 3 | A study on the structural analysis of aluminium drosses and processing of industrial aluminium salty slags显示文摘 | Hasar A B Y Saridede M N Cigdem M | 2005 | Scandinavian Journal of Metallurgy2005，34，5： | 1 |
| 4 | The Effect of Reduction Parameters on I-ron Nugget Production from Composite Pellets显示文摘 | Birol B Saridede M N | 2013 | Mineral Pro-cessing Extractive Metallurgy Review2013，34，4： | 1 |
| 5 | A study on the struc-tural analysis of aluminium drosses and processing of industrial alu-minium salty slags显示文摘 | Hazar A B Y Saridede M N igˇdem M | | 0，，03： | 1 |
| 6 | A study on the structural analysis of aluminium drosses and processing of industrial aluminium salty slags显示文摘 | Hazar A B Y Saridede M N Cigdem M | 2005 | Scandinavian Journal of Metallurgy2005，34，5： | 1 |
| 7 | Utilization of waste polyethylene terephthalate as a reducing agent in the reduction of iron ore composite pellets显示文摘The increasing consumption of plastics inevitably results in increasing amounts of waste plastics. Because of their long degradation periods, these wastes negatively affect the natural environment. Numerous studies have been conducted to recycle and eliminate waste plastics. The potential for recycling waste plastics in the iron and steel industry has been underestimated; the high C and H contents of plastics may make them suitable as alternative reductants in the reduction process of iron ore. This study aims to substitute plastic wastes for coal in reduction melting process and to investigate their performance during reduction at high temperature. We used a common type of waste plastic, polyethylene terephthalate(PET), because of its high carbon and hydrogen contents. Composite pellets containing PET wastes, coke, and magnetite iron ore were reduced at selected temperatures of 1400 and 1450°C for reduction time from 2 to 10 min to investigate the reduction melting behavior of these pellets. The results showed that an increased temperature and reduction time increased the reduction ratio of the pellets. The optimum experimental conditions for obtaining metallic iron(iron nuggets) were reduction at 1450°C for 10 min using composite pellets containing 60% PET and 40% coke. | Gkhan Polat Burak Birol Muhlis Nezihi Saridede | 2014 | International Journal of Minerals,Metallurgy and Materials2014，21，8： | 0 |
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