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; 酸性橙Ⅱ; natural vanadium-titanium magnetite; non-homogeneous Fenton reaction; degradation; acid orange Ⅱ; [全文内容正在添加中] ......
某微细粒嵌布贫铁矿合理选矿工艺研究 余永富1,陈雯1,唐雪峰1 (1.长沙矿冶研究院,湖南,长沙,410012) 摘要:某铁矿石中磁铁矿和赤铁矿的嵌布粒度相差悬殊,磁铁矿具有中细粒嵌布的特点,赤铁矿则属于典型极微细粒嵌布的范畴.针对该铁矿石的嵌布粒度特性,采用弱磁选-强磁选-絮凝脱泥-反浮选联合工艺流程,获得了铁品位为61.77%,回收率为62.55%的铁精矿. 关键词:极微细粒嵌布; 磁铁矿; 赤铁矿; 强磁选; 絮凝脱泥; microfine dissemination; magnetite; hematite; high intensity magnetic separation; flocculation desliming; [全文内容正在添加中] ......
碱度对钒钛烧结矿显微结构的影响 王海峰1,刘丽娜2,韩秀丽1,王艳红2,姚明艳3 (1.河北理工大学资源与环境学院,河北,唐山,063009;2.河北理工大学轻工学院,河北,唐山,063009;3.承德黑山矿业有限公司,河北,承德,067412) 摘要:采用光学显微镜研究了碱度对钒钛烧结矿显微结构的影响.研究表明:碱度由2.1提高到2.5,烧结矿中钛磁铁矿,铁酸钙与硅酸二钙含量增加,钛赤铁矿与玻璃质含量降低;骸晶状赤铁矿与包边结构减少,显微结构由斑状向交织熔蚀结构过渡;相应的烧结矿强度增加.碱度为2.5时,铁酸钙主要以柱状,针状形态存在,钛磁铁矿主要以他形粒状形态存在,钙钛矿主要呈十字形和他形晶形态存在. 关键词:烧结; 钒钛磁铁矿; 碱度; 显微结构; 烧结矿强度; 铁酸钙; 钙钛矿; sintering; vanadium-titanium magnetite......
铁矿呈中粗-粗晶脉状充填产出,磁铁矿Mn含量4.78%~6.22%,八面体裂理发育,晶胞参数0.840 1~0.840 7 nm,流体成分总量最低,是成矿系统最晚阶段.关键词:印度尼西亚；塔里亚布铁矿床；磁铁矿；成因矿物学；成矿系统Genetic mineralogical characteristics of magnetite from Taliabu iron deposit..., China)Abstract:The genetic mineralogical characteristics of ore magma, contact metasomatic and hydrothermal vein types different magnetite were researched by means of optical microscope, monomineralic......
Trans. Nonferrous Met. Soc. China 24(2014) 3372-3377 Solid-state reduction kinetics and mechanism of pre-oxidized vanadium-titanium magnetite concentrate Shui-shi LIU, Yu-feng GUO, Guan-zhou QIU, Tao... kinetics of pre-oxidized vanadium-titanium magnetite concentrate was studied. The phase and microstructure of the reduction product were characterized by XRD, SEM and EDS methods, based on which......
of liquid formation of sintering mix increases and the mass fraction of liquid phase decreases with the increase of MgO content. And Mg2+ mostly dissolves in magnetite which diffuses into crystal lattice of magnetite and makes the magnetite more stable. Therefore, the mass fraction of magnetite in sinter increases and needle-like calcium ferrite decreases due to the retarding of magnetite......
, limonite, specularite and magnetite, were investigated. And the effect of O2 content on the microstructure of the roasted briquettes was also studied in detail. The results show the amount of calcium ferrite... it is 1275 °C, whereas for specularite and magnetite, 1250 °C. The maximum contents of calcium ferrite for hematite, limonite, specularite and magnetite under the optimal sintering temperature are 73......
and Technology Beijing摘 要:Gold in cyanide tailings from Shandong Province is mainly encapsulated by hematite and magnetite at distribution rates of 76.49 % and 10.88..., and reorganization when hematite is reduced to magnetite, which leads to42.03 % gold exposure, and the high-temperature chlorination rate of gold is 41.17 % at the same time. The structure of wustite formed......
Trans. Nonferrous Met. Soc. China 24(2014) 2976-2985 Oxidation behaviour and phase characterization of titaniferous magnetite ore of eastern India Saikat SAMANTA, Siddhartha MUKHERJEE, Rajib DEY Department of Metallurgical and Material Engineering, Jadavpur University, Kolkata-700032, India Received 18 November 2013; accepted 25 March 2014 Abstract: Titaniferous magnetite ore is a kind......
">Magnetite(Fe3O4)has been used for thousands of years as one of the important magnetic materials.The rapid developments of thin film technology in the past few decades attract the attention of material scientists on the fabrication of magnetite thin films.In this article,we present an overview of recent progress on Fe3O4thin films.The widely used preparation methods are surveyed,and the effect......
