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from molten vanadium bearing slag by oxidation with pure oxygen in the presence of CaO[J]. Transactions of Nonferrous Metals Society of China, 2014, 24(8): 2687-2694. [2] ZHAO Long-sheng, WANG Li-na...加剂为石灰石试剂,分析纯. 表1 钒渣主要化学成分 Table 1 Chemical compositions of vanadium slag (mass fraction, %) 实验设备为数字控温马弗炉(型号:KSW2-10-12).分析仪器有多晶X 射线衍射仪(型号:X'Pert Pro,荷兰帕纳科公司),场发射分析扫描电镜(SEM)-X射线能谱(EDS)分析仪......
,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  ......
Pure metal extraction from molten oxide slag by short-circuit galvanic cellKuochih Chou摘 要:<正> The oxygen-ion-permeable membrane galvanic short-circuit method has been developed, in which pure metal was directly extracted from the molten oxide slag, and no external voltage is applied. The galvanic cell employed in the experiment was as follows......
钒在FeO-SiO2-MnO渣系与铁液间的分配行为董进明1,2,赵飞3,张延玲3,仇圣桃0,干勇3(1.北京市钢铁研究总院连铸技术国家工程研究中心2.北京市北京蒂本斯工程技术有限公司3.北京科技大学 冶金与生态工程学院,北京 100083)摘 要:在实验室条件下,系统研究了1380℃下,钒在FeO-SiO2-MnO渣系与铁液间的分配行为.结果表明:钒的提取率,钒在渣-金两相的分配比,渣的钒容量随渣中SiO2的质量分数升高而降低.在SiO2的质量分数较低时,以上参数随MnO质量分数的增加而升高.而在SiO2的质量......
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......
, hydroxide and carbonate salts of alkali metals (e.g., Na2CO3 and NaOH) to replace the commonly used ternary FeO–SiO2–CaO slag, the sulfide ore is smelted at low temperatures and the molten salt acts simply... in the smelting melt will increase the viscosity of the molten salt and the difficulty of separating the slag from the molten salt. Thus, this issue requires attention. The equilibrium solubility of ZnS......
低钒铁水提钒试验董万春1,戈文荪2,施哲3(1.攀钢集团成都钢钒有限公司,四川成都 6103032.攀钢集团研究院有限公司,四川成都 6117313.昆明理工大学 材料与冶金工程学院,云南昆明 650093)摘 要:根据攀成钢含钒铁水的特点和设备,工艺实际情况,采用转炉双联提钒法,开展了低钒铁水提钒工业试验,生产出成品试验钒渣143.2t.铁水提钒各项技术经济指标优良,半钢[C]3.23%,[V]0.036%,温度1 395.5℃;钒渣V2O56.71%,TFe34.2%;钒氧化率76%,钒回收率为62.78%......
Pure metal extraction from molten oxide slag by short-circuit galvanic cellGAO Yunming, GUO Xingmin, and CHOU Kuochih摘 要:<正> The oxygen-ion-permeable membrane galvanic short-circuit method has been developed, in which pure metal was directly extracted from the molten oxide slag, and no external voltage is applied. The galvanic cell employed......
titanium dioxide was synthesized from titanium containing electric furnace molten slag(TCEFMS)by using an alkali fusion,followed by a hydrolyzation-acidolysis-calcination route.The efects of alkali/slag... extraction efciency of nanostructured Fedoped titanium dioxide is 99.35%,when the molten slag is calcinated at 700 C for 1 h with the mass ratio of alkali/molten slag of 1.5:1.The influence of alkali......
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......