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:A 文章编号:1672-7207(2011)05-1175-06 Effect of neonatal Fe2O3 on preheated magnetite concentrate pellets strength HUANG Zhu-cheng, L? Li-li, ZHU Liang-zhu... was calculated according to the mass loss of magnetite concentrate in air and neutral atmosphere. The effect of preheating temperature and time on the mass fraction of neonatal Fe2O3 and the impact......
magnetite(HCVTM),the micro-sinter test was applied to investigate the influence of basicity and temperature on the HCVTM sinters.The bonding phase strength(BS) was tested via an electronic universal......
burden made from chromium-bearing vanadium–titanium magnetite was investigated. The results show that with increasing MgO content in the sinter, the softening interval and melting interval increased... vanadium–titanium magnetite in a blast furnace.关键词:......
在有机添加剂存在的情况下共沉淀制备纳米Fe3O4及其性能 卫国英1,吴琼1,葛洪良1,周巧英1 (1.浙江省磁学重点实验室,中国计量学院材料科学与工程学院,浙江,杭州,310018) 摘要:在有机添加剂甲基丙烯酸乙酯存在的情况下,采用共沉淀方法从Fe2+与Fe3+的水溶液中制备了Fe3O4纳米粒子.分别通过X射线衍射,透射电镜研究了其结构与形貌.结果表明:当溶液中甲基丙烯酸乙酯浓度为0.015 mol/L时,所制备的纳米粒子为单一的Fe3O4相;粒子呈球形,半径大约为15~30 nm.同时,采用振动样品磁强计对Fe3O4纳米粒子的磁性能进行了表征.结果显示,在不同温度下测得的M-H/T曲线与温度无关,表明该粒子具有典型的超顺磁性. 关键词:Fe3O4纳米粒子; 共沉淀; 超顺磁性; 有机添加剂; magnetite nanoparticles; co-precipitation......
承钢钒钛磁铁矿烧结配矿正交优化研究孙艳芹1,2,杨松陶2,吕庆2,李福民2(1.辽宁省沈阳市东北大学材料与冶金学院2.河北省唐山市河北理工大学冶金与能源学院)摘 要:目前承钢烧结生产主要以钒钛磁铁精矿为含铁物料,但其成品烧结矿强度低,低温还原粉化严重.针对这一问题,研究了承钢烧结原料烧结性能,烧结过程,烧结矿性能,得出海砂配比为0,黑山钒粉配比为14%,普通精粉配比为20%,钢渣配比为1%时为最优配矿,为承钢提高烧结矿质量提供了理论依据.关键词:配矿； 钒钛磁铁矿； 烧结矿强度； 烧结过程......
; accepted 24 May 2016 Abstract: Magnetite concentrate was recovered from ferrous sulphate by co-precipitation and magnetic separation. In co-precipitation process, the effects of reaction conditions... in magnetite concentrate were increased from 51.41% and 84.15% to 62.05% and 85.35%, respectively. Key words: ferrous sulphate; titanium dioxide; magnetite concentrate; co-precipitation; wet milling......
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重铬酸钾滴定法测定钛铁时钒钛磁铁矿试样的微波消解研究梁庆勋1,朱霞萍1,尹继先2(1.四川省成都市成都理工大学材料与化学化工学院2.广州出入境检验检疫局 化矿处,广东广州 510623)摘 要:建立了在硫磷混酸体系下钒钛磁铁矿的微波消解方法.最优消解条件是:称取0.200 0g样品,加入3 mL H2SO4,9 mL H3PO4和5滴HNO3,在功率350 W下持续加热2 min,560 W下持续加热6 min,350 W下持续加热2 min.消解后的试液以中性红和二苯胺磺酸钠为指示剂,以两种不同浓度的K2Cr......
高比例褐铁矿与细磁精矿粉配矿技术研究贺淑珍1(1.山西省太原市山西太钢不锈钢股份有限公司)摘 要:在对褐铁矿-扬迪矿的性能进行了理,化,热力学性能分析研究的基础上,与太钢自产超细磁铁精矿粉尖山粉进行了合理配矿,经过大量的烧结杯试验和烧结矿冶金性能检测,优化出了适宜的配比方案,开发出了超细磁铁精矿粉与高比例褐铁矿配矿烧结技术,应用于生产实践,并实施了有利措施,烧结料层透气性得到了改善,烧结矿产质量指标保持在较好水平,配矿成本大大降低,取得了很好的应用效果.关键词:扬迪矿； 烧结性能； 细精矿粉； 产......
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