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by the optical microscope and SEM equipped with EDS. The volume of molten iron increased with the melting temperature increasing when titania or high-content titania slag was used as the substrate... slag is very important. This work focuses on investigating wetting and interfacial permeability of molten iron and prereduced ilmenite pellet systems, so as to clarify the separation process of iron......
电感耦合等离子体原子发射光谱法测定钒渣中主次成分杨洪春1,冯宗平1(1.四川省攀枝花市攀枝花钢钒有限公司 技术质量部)摘 要:采用电感耦合等离子体原子发射光谱法对钒渣中V2O5,TFe,SiO2,Al2O3,CaO,MgO,MnO,TiO2,P,S的测定进行了试验研究.样品经碳酸钠和四硼酸钠混合熔剂在1020℃熔融后,用盐酸浸取,引入试液中的钠离子对测定有影响,通过基体匹配和加入钇内标校正,各待测元素之间无相互干扰.方法的检出限为0.004~0.030mg/mL,相应测定值的相对标准偏差(RSD,n=11)为0......
高钛渣加碳氯化反应热力学在熔盐氯化中的应用居殿春1,严定鎏1,李向阳1,马恩权2,臧颖波2,李俊强2(1.北京市钢铁研究总院先进钢铁流程及材料国家重点实验室2.攀钢集团锦州钛业有限公司,辽宁锦州 121005)摘 要:通过对高钛渣各组分氧化物加碳氯化反应的热力学计算与分析,发现循环氯气中的氧气与石油焦的燃烧反应是影响熔盐氯化炉温度的主要因素,而炉温的稳定控制是提高熔盐氯化炉运行效率的关键;在900~1 500 K时,高钛渣加碳氯化热力学趋势表明:所有氧化物在氯化过程中全部转变为氯化物,但实际反应中Al2O3,尤......
Effect of vanadium carbide on commercial pure aluminumHua-ping Sun,Jun Wu,Tian Tang,Bo Fan,Zheng-hua TangSchool of Materials Science and Engineering,Sichuan University摘 要:The effect of vanadium carbide(VC) on the grain size of commercial pure aluminum was experimentally investigated by varying the content of VC, the holding time, and casting temperature......
and crystal phases was successfully synthesized from titanium-containing electric furnace molten slag by using a hydrothermal method followed by reflux process in acid solution. The effects of acid...Controllable synthesis of nanorod/nanodisk TiO2 from titanium-containing electric furnace molten slagZai-Qing Que,Yang Li,Hai-Yang Yu,Feng Zheng,Mei Zhang,Min GuoState Key Laboratory of Advanced......
. This method involves two procedures: low-temperature roasting of vanadium-bearing titanomagnetite and water leaching of roasting slag. During the roasting process, the reduction of iron oxides to metallic iron, the sodium oxidation of vanadium oxides to water-soluble sodium vanadate, and the smelting separation of metallic iron and slag were accomplished simultaneously. Optimal roasting conditions......
,呈方解石晶型. 表1钒渣的化学成分 Table 1 Chemical compositions of vanadium slag (mass fraction, %) 采用行星式球磨机(Retsch PM100)对样品进行机械活化;采用高温综合热分析仪(Setsys EVO TG-DTA 1750)进行热重分析;采用电感耦合等离子发射光谱仪(Thermo Fisher ICAP 6000)测定...至最低值0.93 μm;当延长至80 min时,钒渣粒径团聚的体积平均粒径略微增加至5.27 μm. 图2 不同活化时间钒渣的粒度分析 Fig. 2 Particle size analysis for vanadium slag with different activation time 表2 不同活化时间钒渣粒度特征值 Table 2  ......
低品位钒矿直接酸浸提钒工艺研究李欣1,王毅1,朱军2(1.西安建筑科技大学 冶金工程学院,陕西西安 7100552.西安建筑科技大学冶金工程学院,西安710055)摘 要:针对提钒工艺现状存在问题,根据物理选矿结果,确定了抛尾富集物酸法直接浸出钒的工艺方法.通过浸出试验,对酸浸提钒阶段各影响因素进行优化.确定了适宜的磨矿粒度,酸度,浸出温度,液固比和浸出时间等工艺条件,钒的浸出率可达到90%以上.关键词:钒矿; 物理选矿; 直接酸浸; 钒浸出率......
)05-1035-07 Transformation mechanism and leaching performance of rare earth fluoride molten salt slag in the process of Na2CO3-roasting YANG Youming1,2, LI Liu2, XIAO Min2, NIU Fei1 (1. Institute..., China) Abstract: The transformation mechanism of rare earth fluoride molten salt slag(REFMSS) mixed with Na2CO3 in the roasting process and the effects of roasting conditions on rare earth (RE......
is desilication from the titanium–vanadium slag by alkaline leaching. The obtained products are decomposed with molten NaOH salt under atmospheric pressure, forming the intermediate products. Finally, the intermediate products are converted into TiO2 and vanadium component after further treatment. However, in the molten NaOH salt decomposition process, the silicon and the titanium–vanadium slag form......