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您的检索式：作者名="Levent KARTAL"
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| 1 | One-step electrochemical reduction of stibnite concentrate in molten borax显示文摘In this study,antimony production from a stibnite concentrate(Sb2S3)was performed in one step using a molten salt electrolysis method and borax as an electrolyte.Electrochemical reduction of the stibnite concentrate was performed at 800℃under galvanostatic conditions and explained in detail by the reactions and intermediate compounds formed in the borax.The effects of current density(100 800 mA cm^-2)and electrolysis time(10 40 min)on cathodic current efficiency and antimony yields were systematically investigated.During the highest current efficiency,which was obtained at 600 mA cm^-2,direct metal production was possible with 62%cathodic current efficiency and approximately 6 kWh/kg energy consumption.At the end of the 40-min electrolysis duration at 600 mA cm^-2 current density,antimony reduction reached 30.7 g and 99%of the antimony fed to the cell was obtained as metal. | Levent Kartal Mehmet Baris Daryal Güldem Kartal Sireli Servet Timur | 2019 | International Journal of Minerals,Metallurgy and Materials2019，26，10： | 6 |
| 2 | Direct electrochemical reduction of copper sulfide in molten borax显示文摘In this study,for the first time,direct copper production from copper sulfide was carried out via direct electrochemical reduction method using inexpensive and stable molten borax electrolyte.The effects of current density(100–800 mA/cm^2)and electrolysis time(15–90 min)on both the cathodic current efficiency and copper yield were systematically investigated in consideration of possible electrochemical/chemical reactions at 1200℃.The copper production yield reached 98.09%after 90 min of electrolysis at a current density of 600 mA/cm^2.Direct metal production was shown to be possible with 6 kWh/kg energy consumption at a 600 mA/cm2 current density,at which the highest current efficiency(41%)was obtained.The suggested method can also be applied to metal/alloy production from single-and mixed-metal sulfides coming from primary production and precipitated sulfides,which are produced in the mining and metallurgical industries during treatment of process solutions or wastewaters. | Levent Kartal Servet Timur | 2019 | International Journal of Minerals,Metallurgy and Materials2019，26，8： | 4 |
| 3 | CaCl_2-Cu_2S-NiS熔盐电解生产Cu-Ni合金(英文)显示文摘介绍一种金属/合金的生产方法,用于恒电流和恒电位条件下由混合硫化物(Cu_2S,NiS)生产Cu-Ni合金,称为直接电化学还原(DER)。研究槽电压和槽电流等工艺参数对还原得到的化合物组成的影响,以生产工业所需的CuNi10, CuNi20和CuNi30等合金。在1200℃下采用循环伏安法(CV)考察Cu_2S和NiS在CaCl2熔体中的电化学行为。根据CV研究结果,Cu_2S的阴极还原是一步完成的,即Cu_2S■Cu; NiS的阴极还原则分两步进行,即NiS■Ni3S2■Ni。恒电流研究表明,在10A电流下电解15min,可制备出最高硫含量为320×10^(-6)的高纯CuNi10合金。扫描电子显微镜以及能量色散X射线能谱和光学发射光谱(OES)测试结果表明,在2.5 V电压下直接电化学还原15 min,可制备出杂质含量低(即硫含量小于60×10^(-6))的所选成分的Cu-Ni合金。 | Levent KARTAL Servet TIMUR | 2018 | Transactions of Nonferrous Metals Society of China2018，28，10： | 2 |
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