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| 1 | 氧化铝对铁矿石烧结质量和生产率的影响(英文)显示文摘烧结矿是现代高炉生产的主要含铁原料。合理控制入炉烧结矿的理化性能与冶金性能对高炉生产和稳定操作是很必要的。铁矿粉是烧结矿的主要原料,其化学成分和烧结料层内的热量条件在烧结过程中起着重要的作用。化学成分等参数也决定着烧结矿矿相结构和质量。由于含氧化铝原料的低反应性及其液相的高粘性,因此在人们的预料中高铝矿石对烧结矿结构组成的影响并不好。烧结混合料中的氧化铝在同化过程中需要消耗大量热量,延迟烧结过程。在确保高炉渣的流动性方面,氧化铝也需要消耗较大热量。不论是烧结还是高炉的生产实绩均表明,氧化铝是有害的。一般而言,高含铁量与低脉石的印度矿与其他矿石的不同特点就是氧化铝含量高。由于高品味铁矿石的消耗殆尽,使用可利用的烧结原料成为生产必需。因此,必须要掌握氧化铝的作用及其对烧结矿质量和生产过程的影响。实验室完成了不同氧化铝含量水平(2.00%~5.46%)的实验,可从中了解氧化铝在烧结矿矿物学、生产率、物理性能和冶金性能方面的影响。随着烧结矿中氧化铝含量的增加,残存赤铁矿、复合铁酸钙(SFCA)和孔隙率增加,而磁铁矿和硅酸盐比例下降。烧结生产率和烧结矿转鼓强度(TI)随着氧化铝含量上升而下降,反映烧结矿冶金性能的诸如低温还原粉化率(RDI)和还原率(RI)提高。 | T Umadevi S Prakash U K Bandopadhyay P C Mahapatra M Prabhu Madhu Ranjan | 2010 | 世界钢铁2010,,1: | 4 |
| 2 | The present scenario of cervical cancer control and HPV epidemiology in India: an outline 显示文摘 | Senapathy JG Umadevi P Kannika P | 2011 | Asian Pac J Cancer Prey2011,12,5: | 1 |
| 3 | Antioxidant, Anti-inflammatory and Antinociceptive Properties of Black Pepper Essential Oil (Piper nigrum Linn)显示文摘 | JEENA K LIJU V B UMADEVI N P | 2014 | J Essent Oil Bear Pl2014,,17: | 1 |
| 4 | Influence of magnesia on iron ore sinter properties and productivity 显示文摘 | Umadevi T Nelson K Mahapatra P C | 2009 | Ironmaking and Steelmaking2009,36,7: | 1 |
| 5 | Sero diagnosis of tuberculosis in children using two ELISA kits显示文摘 | Swaminathan S Umadevi P Shantha S | 1999 | Indian J Pediatr1999,66,6: | 1 |
| 6 | The present scenario of cervical cancer control and HPV epidemiology in India:an outline 显示文摘 | Senapathy JG Umadevi P Kannika PS | 2011 | Asian Pac J Cancer Prey2011,12,5: | 1 |
| 7 | The present seenario of cervical Cedlcer control and HPV epidemiology in India: an outline 显示文摘 | Senapathy JG Umadevi P Kannika PS | 2011 | Asian Pac J Cancer Prey2011,12,5: | 1 |
| 8 | The present scenarioof cervical control and HPV epidemiology in India: an outline 显示文摘 | Senapathy JG Umadevi P Kannika PS | 2011 | Asian Pac J Cancer Prev2011,12,5: | 1 |
| 9 | Encapsulation of fluoroethanols in pristine and StoneWales defect boron nitride nanotube-A DFT study显示文摘 | UMADEVI P AISWARYA T SENTHILKUMAR L | 2015 | Appl Surf Sci2015,345,: | 1 |
| 10 | The present scenarioof cervical cancer control and HPV epidemiology in India: an outline显示文摘 | Senapathy J G Umadevi P Kannika P | 2011 | Asian Pac J Cancer Prey2011,12,5: | 1 |
| 11 | Structural, electrical and infrared optical properties of vanadium pentoxide (V2 O5 ) thick - film thermistors显示文摘 | P Umadevi C L Nagendra G K M Thutupalli | 1993 | Sensorss & Actuators1993,39,: | 1 |
| 12 | Influence of sinter basicity (CaO/SiO2)on low and high alumina iron ore sinter quality显示文摘 | Umadevi T Sah R Mahapatra P C | 2014 | Mineral Processing & Extractive Metallurgy Imm Transactions2014,123,: | 1 |
| 13 | Sero diagnosis of tuberculosis in children using two ELISA kits显示文摘 | Swaminathan S Umadevi P Shantha S | 1999 | Indian J Pediatr1999,66,6: | 1 |
| 14 | 利用人工神经网络模型预测球团矿还原粉化指数显示文摘印度JSW钢铁公司是一家年产钢700万t的联合钢铁企业,其炼铁单元由2座COREX和3座高炉组成。COREX和高炉用球团由一个年产420万t的带式焙烧机球团厂供给。作为一项重要的冶金性能指标,球团的还原粉化指数(RDI)要求满足COREX和高炉冶炼的要求。通过建立神经元网络模型和敏感度分析,研究了给料率、料层高度、焙烧温度、干透点温度、COREX煤气单耗、膨润土的添加量、生球水分、生球碳含量、以及成品球的MgO、Al2O3含量和碱度等12个因素对球团RDI指标的影响,并对焙烧机生产球团的RDI(-6.3mm)和RDI(-0.5mm)进行了预测。结果表明,球团中MgO、CaO/SiO2,生球碳含量和Al2O3含量对球团RDI指标影响较大。预测结果与实际的数据误差低于4%。研究得出:①生球的MgO、氧化铝和碳含量以及二元碱度对球团RDI有重要影响。②随着球团MgO含量和球团二元碱度的升高,球团RDI(-6.3mm)和RDI(-0.5mm)得到改善。③随着生球中氧化铝含量的增加,球团RDI升高,因此应尽量使用低氧化铝含量的铁矿粉来降低球团中的氧化铝。随着生球中氧化铝和碳含量的增加,球团RDI(-6.3mm)和RDI(-0.5mm)有所降低。④提高球团二元碱度和MgO含量的同时,降低生球碳含量可以改善球团的RDI。因此需要对它们的配比进行优化。⑤二元碱度0.50~0.55,MgO质量分数0.35%~0.45%,生球碳质量分数1.15%~1.20%,焙烧球氧化铝质量分数低于2.5%,FeO质量分数低于0.60%时,可望得到较低的RDI。⑥相对于球团中的碳和CaO含量,最优的焙烧温度可以改善球团的RDI(-6.3mm)和RDI(-0.5mm)。⑦高给料率和较高的料层高度会使球团的RDI(-6.3mm)和RDI(-0.5mm)升高。 | T Umadevi P Kumar P K Gupta P Mahapatra M Prabu M Ranjan 赵晓岩 熊林 李建 | 2010 | 世界钢铁2010,10,3: | 1 |
| 15 | Preparation and characteri- sation of transition metal oxide micro-thermistors and their application to immersed thermistor bolometer infra- red detectors 显示文摘 | Umadevi P Nagendra C L | 2002 | Sensors & Actuators A: Physical2002,96,2: | 1 |
| 16 | Formulation and evaluation of methotrexate niosomes显示文摘 | Chandraprakash KS Udupa N Umadevi P | 1992 | Indian J Pharm Sci1992,54,5: | 1 |
| 17 | Protective effects of Coriandrum sativum extracts on carbon tetrachloride-induced hepatotoxicity in rats显示文摘 | Sreelatha S Padma P R Umadevi M | 2009 | Food and Chemical Toxicology2009,47,4: | 1 |
| 18 | Protection against radistion- inducedchromosome damage in mouse bone marrow by Ocimum sanctum显示文摘 | Canasoundarl A UmaDevi P Rao MNA | 1997 | Mutation Research1997,373,: | 1 |
| 19 | Structure, Electrical and Infrared Optical Properties of Vanadium Pentoxide (V2O5) Thick-film Thermistors显示文摘 | Umadevi P | 1993 | Sens Actuators1993,39,1: | 1 |
| 20 | The present scenario of cervical control and HPV epidemiology in India: an outline 显示文摘 | Senapathy JG Umadevi P Kannika PS | 2011 | Asian Pac J Cancer Prev2011,12,5: | 1 |