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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 | Preparation of Sm2O3 and Co3O4 from SmCo magnet swarf by hydrometallurgical processing in chloride media显示文摘The recycling of rare earth elements(REE) from end-of-life REE based products is an environment friendly proposition. Waste Sm-Co based permanent magnet generated during machining is a good source for both Sm and Co. In the present study a simpler process of acid leaching at 80 ℃ followed by solvent extraction, oxalate precipitation and calcination is described for producing pure Sm_2 O_3 and Co_3 O_4. With either 10 vol% H_2SO_4 or 15 vol% HCI at 80 ℃ more than 95% Sm and Co are leached in 1 h.Extraction of Sm from sulphate leach liquor with TBP or Aliquat 336 was poor. Although extraction with TOPS-99 is quantitative but Sm from sulphate leach liquor precipitated as Sm_2(SO_4)_3·8 H_2 O. The chloride leach liquor at an initial pH of 2.5 and with 1.2 mol/L TOPS-99 shows requirement of 4-stages at A:O = 3:2. Stripping with oxalic acid precipitates Sm-oxalate which is calcined at 800 ℃ to produce Sm_2 O_3. Co_3 O_4 is recovered from the raffinate through oxalate precipitation followed by calcination at450℃. | K.Sahoo A.K.Nayak M.K.Ghosh K.Sarangi | 2018 | Journal of Rare Earths2018，36，7： | 3 |
| 3 | Generalized thermoelastic functionally graded spherically isotropic solid containing a spherical cavity under thermal shock显示文摘This paper is concerned with the determination of thermoelastic displacement,stress and temperature in a functionally graded spherically isotropic infinite elastic medium having a spherical cavity,in the context of the linear theory of generalized thermoelasticity with two relaxation time parameters(Green and Lindsay theory).The surface of cavity is stress-free and is subjected to a time-dependent thermal shock.The basic equations have been written in the form of a vector-matrix differential equation in the Laplace transform domain,which is then solved by an eigenvalue approach.Numerical inversion of the transforms is carried out using the Bellman method.Displacement,stress and temperature are computed and presented graphically.It is found that variation in the thermo-physical properties of a material strongly influences the response to loading. A comparative study with a corresponding homogeneous material is also made. | M.K.Ghosh M.Kanoria | 2008 | Applied Mathematics and Mechanics(English Edition)2008，29，10： | 2 |
| 4 | Displacements and stresses in composite multi-layered media due to varying temperature and concentrated load显示文摘这篇论文处理 thermo 橡皮排水量的决心;在一个 multi-layered 天体的压力在由于热的申请有不同有弹性的性质的不同厚度的不同的层建立了;集中的负担在最高媒介的表面。每层被假定用做的同类;各向同性的有弹性的材料。为每层的相关排水量部件被拿是关于一根线的 axisymmetric,它对所有层的飞机表面垂直。因此,为每层的压力函数在任何身体力量的缺席满足一个单个方程。方程然后被不可分的变换技术解决。为 thermo 橡皮排水量的分析表情;在内在的团中的压力;相应数字代码为层的任何数字被构造。然而,数字比较为三被做;四层。 | M.K.Ghosh M. Kanoria | 2007 | Applied Mathematics and Mechanics(English Edition)2007，28，6： | 0 |
| 5 | 共混顺序对丁腈橡胶和氯磺化聚乙烯橡胶共混胶性能的影响显示文摘1 前言在特定的应用场合下,能产生具有较好综合性能的两种或两种以上聚合物的共混技术是聚合物加工中的一个非常活跃的领域。丁腈橡胶(NBR)具有极好的耐油性,而高温屈挠性和耐臭氧性却很差。最近,Hofm- | A.R.Tripathy M.K.Ghosh C.K.Das 李久玉 | 1993 | 橡胶参考资料1993，23，6： | 0 |
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