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| 1 | 高钙高磷钒渣提钒工艺研究进展显示文摘为了给解决高钙高磷钒渣难利用问题提供参考,在归纳目前已提出的钠化焙烧—水浸提钒、钙化焙烧—酸浸提钒、钙化焙烧—碳酸钠浸出提钒、含钒溶液溶剂萃取提钒、含钒溶液离子交换提钒等主要的钒渣提钒工艺基础上,着重介绍了其中的钠化焙烧—水浸提钒工艺、钙化焙烧—酸浸提钒工艺、钙化焙烧—碳酸钠浸出提钒工艺以及新提出的钙化焙烧—碳酸铵浸出提钒工艺和钙化焙烧—草酸盐浸出提钒工艺在处理高钙高磷钒渣方面的研究进展,最后针对这些工艺尚存在的缺陷,指出寻找钙化焙烧除磷添加剂、减少碳酸铵浸出时的浸出剂用量、简化草酸盐浸出时的浸出剂种类等应该是高钙高磷钒渣提钒工艺今后的研究方向。 | 王俊 孙朝晖 余晓春 苏毅 付自碧 郭继科 | 2014 | 金属矿山2014，43，6： | 10 |
| 2 | 预氧化钒钛磁铁精矿的固态还原动力学及其机理(英文)显示文摘研究预氧化钒钛磁铁精矿固态还原反应的动力学,采用XRD、SEM和EDS等手段研究还原产物的显微结构和物相变化,在此基础上,对其固态还原机理进行研究。结果表明:以煤为还原剂,在还原温度为950~1100°C时,预氧化钒钛磁铁精矿的固态还原受界面化学反应控制,反应的表观活化能为67.719 k J/mol;预氧化钒钛磁铁精矿的还原历程可描述为:预氧化钒钛磁铁精矿→钛铁晶石→钛铁矿→亚铁板钛矿(Fe Ti2O5)→(FenTi1-n)Ti2O5。预氧化钒钛磁铁精矿在1050°C还原60 min后,还原产物中会形成M3O5型(M为Fe、Ti、Mg、Mn等)固溶体,存在于M3O5固溶体中铁的难还原性是限制预氧化钒钛磁铁矿还原的主要原因。 | 刘水石 郭宇峰 邱冠周 姜涛 陈凤 | 2014 | Transactions of Nonferrous Metals Society of China2014，24，10： | 10 |
| 3 | 钒钛磁铁矿金属化球团还原冶炼中钒的行为显示文摘研究电炉冶炼钒钛磁铁矿金属化球团中炉渣氧化钙、氧化镁含量以及冶炼温度对钒的行为的影响。对钒的还原和分配热力学进行计算和分析,并采用实验室电炉进行高温冶炼试验。热力学计算结果表明,钒在钛渣和铁水间的分配比随着渣中氧化钙、氧化镁含量增加以及冶炼温度的提高而下降。电炉冶炼试验结果表明,铁水中的钒含量以及生铁中钒回收率随着渣中氧化钙、氧化镁含量以及冶炼温度的提高而增加,而钒在钛渣和铁水间的分配比则有下降的趋势。此外,钒在铁水中的回收率随着钛渣光学碱度的增加存在提高的趋势。增加钛渣中的氧化镁含量进而提高炉渣光学碱度,不仅有利于钒的还原,而且可以促进有利于钛回收的含镁黑钛石相的形成。 | 王帅 郭宇峰 郑富强 陈凤 杨凌志 姜涛 邱冠周 | 2020 | Transactions of Nonferrous Metals Society of China2020，30，6： | 9 |
| 4 | 普矿配加对钒钛烧结矿质量的影响显示文摘通过烧结杯制备了全钒钛以及配加一定量印粉(YD)、马粉(MF)及自产普粉(ZF)的钒钛烧结矿,并对其烧结速度、烧损率、成品率、转鼓强度、RDI>3.15 mm以及软化性质进行了测定及分析。试验结果表明:全钒钛烧结矿质量较差,尤其是RDI>3.15 mm过低,产率较低,需配加普矿提高其质量及产量。选择普粉时应兼顾其制粒性以及化学成分等,应保证烧结矿中一定量的SiO2、MgO以及Al2O3不宜过高。配加3种普粉均有利于提高烧结速度及提高软化区间,配加自产粉有利于提高钒钛烧结矿的转鼓强度(64.25%)以及RDI>3.15 mm,但降低了成品率;配加印粉有利于提高转鼓强度、成品率,但是降低了RDI>3.15 mm;配加马粉有利于提高强度和RDI>3.15 mm,但是其铁品位低、烧损大。配加13%(印粉+马粉+自产)钒钛烧结矿的指标优于配加6.5%(印粉+马粉+自产)的钒钛烧结矿。 | 周密 姜涛 杨松陶 王艳军 张立恒 薛向欣 | 2015 | 钢铁2015，50，8： | 7 |
| 5 | A method for recovery of iron,titanium,and vanadium from vanadium-bearing titanomagnetite显示文摘An innovative method for recovering valuable elements from vanadium-bearing titanomagnetite is proposed. 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 for iron/slag separation were achieved with a mixture thickness of 42.5 mm, a roasting temperature of 1200°C, a residence time of 2 h, a molar ratio of C/O of 1.7, and a sodium carbonate addition of 70 wt%, as well as with the use of anthracite as a reductant. Under the optimal conditions, 93.67% iron from the raw ore was recovered in the form of iron nugget with 95.44% iron grade. After a water leaching process, 85.61% of the vanadium from the roasting slag was leached, confirming the sodium oxidation of most of the vanadium oxides to water-soluble sodium vanadate during the roasting process. The total recoveries of iron, vanadium, and titanium were 93.67%, 72.68%, and 99.72%, respectively. | Yi-min Zhang Li-na Wang De-sheng Chen Wei-jing Wang Ya-hui Liu Hong-xin Zhao Tao Qi | 2018 | International Journal of Minerals,Metallurgy and Materials2018，25，2： | 6 |
| 6 | Carbothermic reduction of vanadium titanomagnetite with the assistance of sodium carbonate显示文摘The carbothermic reduction of vanadium titanomagnetite concentrate(VTC)with the assistance of Na_(2)CO_(3)was conducted in an argon atmosphere between 1073 and 1473 K.X-ray diffraction and scanning electron microscopy were used to investigate the phase transformations during the reaction.By investigating the reaction between VTC and Na_(2)CO_(3),it was concluded that molten Na_(2)CO_(3)broke the structure of titanomagnetite by combining with the acidic oxides(Fe_(2)O_(3),TiO_(2),Al_(2)O_(3),and SiO_(2))to form a Na-rich melt and release FeO and MgO.Therefore,Na_(2)CO_(3)accelerated the reduction rate.In addition,adding Na_(2)CO_(3)also benefited the agglomeration of iron particles and the slag–metal separation by decreasing the viscosity of the slag.Thus,Na_(2)CO_(3)assisted carbothermic reduction is a promising method for treating VTC at low temperatures. | Luming Chen Yulan Zhen Guohua Zhang Desheng Chen Lina Wang Hongxin Zhao Fancheng Meng Tao Qi | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，2： | 5 |
| 7 | 碱度对含铬型钒钛磁铁矿烧结性能的影响显示文摘以承德建龙特殊钢有限公司现场条件为依据,通过烧结杯实验模拟碱度僻)对含铬型钒钛磁铁矿烧结性能的影响,分析了其显微结构.结果表明,随碱度提高,烧结速度先增大后减小,R=2.5时最大,为19.70mm/min,烧损增大;R=2.7时转鼓强度最高,为63.53%;碱度提高改善含铬型钒钛烧结矿的低温还原粉化指数(RDI),R=2.7时大于3.15mm的颗粒的RDI最高,为75.09%;碱度增大生产率先增大后减小,R=2.5时最高,为1.35t/(m2·h).R-2.1~2.5时燃耗比上升,R=2.1时最低,为43.21kg/t.碱度提高有利于提高软化开始和软化终了温度,改善含铬型钒钛烧结矿的软化性能、矿物组成及结构,是其性能改善的内因.该矿适宜的生产碱度为2.5. | 周密 姜涛 杨松陶 王艳军 张立恒 薛向欣 | 2015 | 过程工程学报2015，15，3： | 5 |
| 8 | 含钒钢渣中负组元钙的净化与回收显示文摘含钒钢渣产自钒钛磁铁矿的炼钢过程,是很有价值的冶金二次资源,可作为提钒的重要原料。然而,含钒钢渣中负组元钙含量极高,高含量的钙会极大地降低提钒的指标、增加提钒的成本,因此对负组元钙进行净化与回收,是必要的提钒预处理手段。基于含钒钢渣中负组元钙的特点,分析了其净化与回收的研究进展,指出了存在的问题,提出了相应的建议:摇床重选净化率不高,并会损失一定的正组元钒,且净化后的钙无法回收,今后可尝试处理能力大的重选设备,并强化重选过程,提高重选精度与选择性;高温焙烧成本高、污染重,基本不具推广应用价值;一些其它技术,具有借鉴作用,能否移植尚不明确,有待进一步完善和发展;氯铵浸出法选择性好,净化率高,不会造成钒的损失,同时可将净化后的钙富集于浸出液中进而实现沉钙回收,是一种有前途的方法;氯铵浸出法优势明显,其回收、循环方面需进一步研究完善。 | 叶国华 陈子杨 谢禹 左琪 张豪 | 2020 | 矿产保护与利用2020，40，3： | 4 |
| 9 | Mixture of ilmenite and high phosphorus iron ore smelted by oxygen-enriched top-blown smelting reduction显示文摘In order to reasonably utilize the abundant resources of high-phosphorus iron ore and ilmenite in China,the technology of top-blown smelting reduction with oxygen enrichment was used to smelt the mixed ore of high-phosphorus iron and ilmenite.The effect,which is related to basicity,reduction temperature,carbon-oxygen ratio and time of ventilated oxygen to iron recovery,dephosphorization rate,content of iron,phosphorus,sulfur and titanium in pig iron,was investigated in the experiment.The results show that an ideal outcome can be gained in condition of 6:4 ration on Mengqiao concentrate and Huimin iron ore,temperature of 1 500 °C,basicity of 1.3,1.0 on molar ration of carbon to oxygen,time of 10 min on blowing-oxygen.The outcome is that there is no foamy slag in generation,a good separation of slag and iron,iron recovery with 91.41%,content of phosphorus with 0.27% and tilanium content less than 0.001%.The atmosphere of strong oxidizing in the upper of reduction container and high potential of oxygen in the composition of slag in this technique bring phosphorus,titanium and silicon into slag,which ensures less content of impurity in pig iron. | 郈亚丽 卿山 王华 施哲 李慧斌 | 2012 | Journal of Central South University2012，19，10： | 3 |
| 10 | Reduction mechanism of high-chromium vanadium–titanium magnetite pellets by H_2–CO–CO_2 gas mixtures显示文摘The reduction of high-chromium vanadium–titanium magnetite as a typical titanomagnetite containing 0.95wt% V2O5 and 0.61wt% Cr2O3 by H2–CO–CO2 gas mixtures was investigated from 1223 to 1373 K. Both the reduction degree and reduction rate increase with increasing temperature and increasing hydrogen content. At a temperature of 1373 K, an H2/CO ratio of 5/2 by volume, and a reduction time of 40 min, the degree of reduction reaches 95%. The phase transformation during reduction is hypothesized to proceed as follows: Fe2O3 → Fe3O4 → FeO → Fe; Fe9 TiO 15 + Fe2Ti3O9 → Fe2.75Ti0.25O4 → FeT iO 3 → TiO 2;(Cr0.15V0.85)2O3 → Fe2VO4; and Cr1.3Fe0.7O3 → FeC r2O4. The reduction is controlled by the mixed internal diffusion and interfacial reaction at the initial stage; however, the interfacial reaction is dominant. As the reduction proceeds, the internal diffusion becomes the controlling step. | Jue Tang Man-sheng Chu Feng Li Ya-ting Tang Zheng-gen Liu Xiang-xin Xue | 2015 | International Journal of Minerals,Metallurgy and Materials2015，22，6： | 3 |
| 11 | 钒钛铁精矿煤基直接还原试验研究显示文摘对印尼钒钛铁精矿和攀枝花红格钒钛铁精矿进行了直接还原对比试验研究,对比试验结果表明:印尼钒钛铁精矿造球性能远远好于攀枝花红格的钒钛铁精矿,能够满足工业生产过程的运输要求。印尼钒钛铁精矿含碳球团在还原温度1350℃,还原15 min条件下金属化率可以达到90%左右,金属化球团残碳量为6%,可以满足后续熔分的要求。经过再磨再选后,TiO_2的含量可以达到12%左右,经过直接还原-熔分后富集的熔分钛渣TiO_2的品味理论上能达到48%左右,可以作为硫酸法钛白的原料。研究表明,印尼钒钛铁精矿非常适合采用直接还原-电炉熔分工艺进行处理,其Fe,V,Ti等有益元素能够得到很好的回收利用。相比于攀枝花红格钒钛铁精矿,印尼钒钛铁精矿由于选矿工艺简单,成本低廉,比攀枝花红格钒钛铁精矿更具市场竞争力。 | 李军 吴恩辉 侯静 黄平 | 2018 | 矿产综合利用2018，0，6： | 3 |
| 12 | 电炉法冶炼钒钛磁铁矿金属化球团的适宜钛渣组成(英文)显示文摘对适宜于预还原电炉法冶炼钒钛磁铁矿的较高品位钛渣的组成进行研究。根据热力学分析结果和相图中的低熔点区域,建议的高品位直接还原电炉钛渣组成为约50%TiO_2,8%~12%MgO和13%Al_2O_3 (质量分数),二元碱度范围为0.8~1.2。电炉及感应炉验证实验表明,在所推荐的钛渣组成下,可实现渣铁的成功分离。所得的含钒铁水含有0.681%V和0.267%Ti (质量分数);所得钛渣以黑钛石(MgTi_2O_5)为主要物相,其TiO_2品位为52.21%(质量分数)。所得钛渣可满足后续采用酸法浸出回收钛的要求。 | 王帅 郭宇峰 姜涛 陈凤 郑富强 唐敏俊 杨凌志 邱冠周 | 2018 | Transactions of Nonferrous Metals Society of China2018，28，12： | 3 |
| 13 | 含钒浸出液除硅试验研究显示文摘研究了从含钒浸出液中分离硅的有效方法,考察了沉淀剂种类、沉淀剂用量,浸出液p H值、反应时间、沉淀温度和静置时间对除硅和钒损失的影响。结果表明,在弱碱性条件下,铝盐对含钒液除硅有良好的效果,除硅率达到99.12%,钒损失率小于1.21%。该工艺过程简单,钒硅分离效果好。 | 阳亚玲 颜文斌 华骏 高峰 易静 张晓君 何新波 | 2015 | 非金属矿2015，38，2： | 2 |
| 14 | 碱度和温度对高铬型钒钛烧结矿矿物学和还原行为的影响(英文)显示文摘在本工作中,研究了碱度和温度对红格高铬钒钛烧结矿还原过程的影响。本研究主要采用了XRF,XRD,SEM和金相显微镜的表征方法。在本文中,研究了不同温度和碱度对高铬钒钛烧结矿的还原行为。还原烧结矿中的Fe,FeO和TiO含量随着碱度和温度的升高而增加。结果表明升高碱度和温度有利于高铬钒钛烧结矿的还原。其中,Fe相有向烧结矿表面迁移的趋势,而钙钛矿和硅酸盐相有向烧结矿内部迁移的趋势。随着碱度的增加,低温还原粉化指数(RDI)降低,而还原指数(RI)增加。当温度从1073 K升高到1373 K时,RI从67.14%增加到82.09%。 | 汤卫东 杨松陶 张立恒 黄壮 杨合 薛向欣 | 2019 | Journal of Central South University2019，26，1： | 2 |
| 15 | Mechanism of vanadic titanomagnetite solid-state reduction显示文摘The influence mechanism of vanadic titanomagnetite solid-state reduction was studied in this paper.Optical microscopy(OM),scanning electron microscope(SEM),and X-ray diffraction(XRD)were used to characterize the structure and phases of the samples.The results show that the dense structure is not the reason that limits the reducibility of Panxi vanadic titanomagnetite.Metallization rate of 93%was achieved when it was reduced at 1100℃for 100 min.After pre-oxidation,Fe_(9)TiO_(15)and Fe_(2)O_(3)are the main phases of samples.Pre-oxidation could destroy the dense structure of vanadic titanomagnetite and increase the specific surface area of particles.However,reducibility of vanadic titanomagnetite is not improved obviously by pre-oxidation,with metallization rate increasing only 1%under the same reduction conditions,and the generated metallic iron grains are smaller.Phase transformation of vanadic titanomagnetite at different reduction temperatures shows that the presence of FeTi_(2)O_(5)is the main reason that limits the reducibility of Panxi vanadic titanomagnetite. | Shui-Shi Liu Yu-Feng Guo Guan-Zhou Qiu Tao Jiang | 2020 | Rare Metals2020，39，11： | 2 |
| 16 | Vanadium extraction from vanadium-bearing titanomagnetite by selective chlorination using chloride wastes (FeClx)显示文摘Vanadium extraction of vanadium-bearing titanomagnetite was investigated by selective chlorination. Thermodynamics analyses on the interactive reactions among related species in the system were made before the experiments. Some fundamental experiments for extracting vanadium by FeCl_x as chlorinating agent were conducted over the temperature range of 900-1300 K under air or oxygen atmosphere. The results show that vanadium can be extracted by the selective chlorination, using FeCl_x, based on thermodynamic analysis and experiment. Vanadium extraction ratio first increases with the increase of temperature, and then decreases with the increase of temperature over the range of 900-1300 K under air or oxygen atmosphere. The higher molar ratio of FeCl_3 to oxides(n_(chl):n_(oxd)) reacting with FeCl_3, the higher ratio of vanadium extraction. Under oxygen atmosphere, the vanadium extraction ratio is up to 32% at 1100 K for 2 h by using FeCl_3 as chlorinating agent. | 郑海燕 孙瑜 卢金文 董建宏 章苇玲 沈峰满 | 2017 | Journal of Central South University2017，24，2： | 2 |
| 17 | 钒钛磁铁矿球团颗粒在回转窑中的运动过程模拟显示文摘采用离散元模拟软件EDEM对钒钛磁铁矿矿料颗粒在回转窑中的运动行为进行了模拟。结果表明,颗粒在下滑后又上升的过程中会出现概率累积,形成离散料堆现象,使矿料颗粒沿轴向波动式分布,反应区域内可分为9个波动周期,平均周期长度0.666 m。结合吸热还原反应焓变的计算结果可知,单个周期内能量波动幅度占反应焓变平均值的29.79%,在反应时间500 s内,单个周期内的平均波动能量为25.58 MJ,容易引起能量失稳。可通过对矿粒球团采用细煤粉附着配碳和外配碳球团混合的方式进行直接还原铁生产,以削弱能量波动,缓冲局部过热,使还原过程顺利进行。 | 刘鹏 宇文超 龚斯宇 刘秉国 张利波 彭金辉 | 2021 | 矿冶2021，30，6： | 1 |
| 18 | 氢还原-酸浸法从钒钛磁铁精矿中制备钛富集矿物显示文摘采用氢还原-酸浸法从钒钛磁铁精矿中制备钛矿物。还原料中Fe、V、Mn、Al、Mg、Ca和Si等元素的浸出行为与还原度密切相关。利用XRD法分析还原料与浸出渣的物相组成,确定还原度对浸出机理的影响。结果表明,在800~1000℃下保温0.5 h,精矿被还原为金属铁和钛磁铁矿相,铁和各杂质元素易浸出。深度还原使还原料中生成钛铁矿和Mg-Al尖晶石相,从而阻碍铁和杂质元素的浸出。更深度的还原导致含镁黑钛石的生成,显著降低杂质元素的浸出率。精矿经氢气在850℃下还原0.5 h并酸浸后,可获得归一化TiO_(2)品位达70.3%的钛富集矿物,是硫酸法生产钛白粉的理想原料。 | 颜正培 张盈 郑诗礼 张洋 孙沛 宋紫微 Faiza SAFDAR 齐涛 | 2022 | Transactions of Nonferrous Metals Society of China2022，32，9： | 1 |
| 19 | 优化进口矿粉与钒钛精粉比例提高烧结矿冶金性能的研究显示文摘针对威钢现有烧结配料系统中钒钛精粉配比较低的问题,进行了烧结杯实验,并对实验所得烧结矿进行冶金性能检测及研究。结果表明:在钒钛精粉配比10%~40%的范围内,随着钒钛精粉配比的增加,烧结矿低温还原粉化率降低;还原度先下降后小幅上升;软化开始温度升高,滴落温度降低,软融区间变窄;成品率、转鼓指数、抗磨指数均降低。从目前威钢生产条件来看,钒钛精粉配比为30%时为宜。在此条件下,烧结矿的抗磨指数为5.97%,转鼓指数为66.67%,达到烧结矿冷强度国家标准;其还原性(RI)为81.62%、低温还原粉化率(RDI+3.15)为41.92%和软熔区间为128℃,符合入炉标准。本结果可为钒钛矿烧结合理配矿提供指导。 | 秦洋洋 王涛 刘正勇 张明远 | 2021 | 四川冶金2021，43，5： | 1 |
| 20 | 钒钛磁铁矿球团气基还原粉化和膨胀实验研究显示文摘还原粉化和还原膨胀是气基竖炉冶炼生产中的重要指标。本文以钒钛磁铁矿氧化球团为原料,考察了还原温度和气相成分对球团还原粉化和膨胀行为的影响规律。结果表明钒钛磁铁矿球团还原粉化指数随温度的升高和气相成分PH2/(PH2+PCO)的增大均呈现先增加后降低的趋势。还原膨胀指数随温度的升高而增大,随PH2/(PH2+PCO)的升高而减小。 | 杨柳 隋裕雷 | 2020 | 广东化工2020，47，6： | 0 |
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