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| 1 | 氨浸出混合铜矿石的表征及动力学(英文)显示文摘研究了含8.8%Cu和36.1%Fe的混合铜矿石的氨浸出动力学.矿物学表征表明,该矿石的含铁成分以菱铁矿为主,硫化矿以黄铜矿为主.研究了工艺参数,如搅拌速度、反应温度、氨浓度、矿石粒径、氧分压对氨浸出过程的影响.在标准的浸出条件下,即粒径125~212 μm、反应温度120℃、NH3浓度1.29 mol/L、氧分压202 kPa,在2.5 h内Cu的浸出率达到83%.在使用较高浓度的氨和较小粒径的矿石时,Cu的浸出率能够达到95%.动力学研究结果表明,浸出过程为表面反应控制,估算出的活化能为(37.6±1.9) kJ/mol,氧分压与氨浓度的反应级数分别为0.2和1. | A.A.BABA M.K.GHOSH S.R.PRADHAN D.S.RAO A.BARAL F.A.ADEKOLA | 2014 | Transactions of Nonferrous Metals Society of China2014，24，5： | 7 |
| 2 | Benefciation studies on recovery and in-depth characterization of ilmenite from red sediments of badlands topography of Ganjam District,Odisha,India显示文摘This paper deals with the recovery of ilmenite mineral from red sediments of badlands topography and suggested flowsheet with material balance.The results of these investigations reveal that the red sediment samples contain 33.2%total heavy mineral,in which ilmenite mineral concentrate is 28.71%(by weight).The ilmenite concentrate recovered from red sediment sample by physical benefciation process,which included scrubbing,desliming,gravity concentration,magnetic and electrostatic separation,contains 99.41%grade with 97.3%recovery.The ilmenite mineral concentrate recovered from red sediments is also suitable for industrial applications.The characterization studies on ilmenite reveal that the TiO2percentage is marginally increasing from 46.69%to 47.86%with increasing magnetic intensity from0.46 to 1.55 T. | T.Laxmi Satya Sai Srikant D.S.Rao R.Bhima Rao | 2013 | International Journal of Mining Science and Technology2013，23，5： | 2 |
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