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| 1 | Separation of hematite from banded hematite jasper(BHJ) by magnetic coating显示文摘The separation of iron oxide from banded hematite jasper(BHJ) assaying 47.8% Fe, 25.6% Si O2 and 2.30%Al2O3 using selective magnetic coating was studied. Characterization studies of the low grade ore indicate that besides hematite and goethite,jasper, a microcrystalline form of quartzite, is the major impurity associated with this ore. Beneficiation by conventional magnetic separation technique could yield a magnetic concentrate containing 60.8% Fe with 51% Fe recovery. In order to enhance the recovery of the iron oxide minerals, fine magnetite, colloidal magnetite and oleate colloidal magnetite were used as the coating material. When subjected to magnetic separation, the coated ore produces an iron concentrate containing 60.2% Fe with an enhanced recovery of56%. The AFM studies indicate that the coagulation of hematite particles with the oleate colloidal magnetite facilitates the higher recovery of iron particles from the low grade BHJ iron ore under appropriate conditions. | Subhashree Singh H.Sahoo S.S.Rath B.B.Palei B.Das | 2015 | Journal of Central South University2015，22，2： | 3 |
| 2 | An overview of utilization of slag and sludge from steel industries显示文摘 | B.Das S.Prakash | | 0，，： | 1 |
| 3 | 塔塔钢铁公司在焦炭生产中使用酚醛树脂显示文摘焦炭质量对高炉生产率非常重要。酚醛树脂可作为少量添加剂用于混煤中以提高焦炭质量。它提高了与煤共热解过程中混煤的流动性,从而提高了焦炭质量。经过成功的实验室研究后,这一结果已通过塔塔钢铁公司的顶装炉和热回收炉的工厂试验中得到证实。发现在混煤中添加0.3%~0.4%的酚醛树脂改善了焦炭质量。 | D.Nag B.Das PS Dash S.Sen S.Paul S.Verma SK Haldar 刘成 | 2018 | 安徽冶金2018，0，1： | 0 |
| 4 | Anisotropic strange quark star in Finch-Skea geometry and its maximum mass for non-zero strange quark mass(m_(s)≠0)显示文摘A class of relativistic astrophysical compact objects is analyzed in the modified Finch-Skea geometry described by the MIT bag model equation of state of interior matter,p=1/3(ρ-4B),where B is known as the bag constant.B plays an important role in determining the physical features and structure of strange stars.We consider the finite mass of the strange quark(m_(s)≠0) and study its effects on the stability of quark matter inside a star.We note that the inclusion of strange quark mass affects the gross properties of the stellar configuration,such as maximum mass,surface red-shift,and the radius of strange quark stars.To apply our model physically,we consider three compact objects,namely,(ⅰ) VELA X-1,(ⅱ) 4U 1820-30,and(ⅲ) PSR J 1903+327,which are thought to be strange stars.The range of B is restricted from 57.55 to Bstable(MeV/fm3),for which strange matter might be stable relative to iron(^(56)Fe).However,we also observe that metastable and unstable strange matter depend on B and ms.All energy conditions hold well in this approach.Stability in terms of the Lagrangian perturbation of radial pressure is studied in this paper. | B.Das K.B.Goswami A.Saha P.K.Chattopadhyay | 2023 | Chinese Physics C2023，47，5： | 0 |
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