Abstract: The feasibility of resources comprehensive recycling from V-Ti magnetite by sodium alkali reaction and carbothermic reduction in one-step was discussed through thermodynamics analysis. Based on the calculation,rational process route was proposed,and corresponding measurements were put forward to imp...
Abstract: The dry tailings from iron separation of a low-grade vanadium-titanium magnetite contain 9.65% TiO2. Due to an acute shortage of water in the mining area,titanium resources in the tailings have not been recycled. Considering the dissemination features of iron and titanium minerals in the tailings,a ...
Abstract: The optimal experiments for reducing compactness of titanium sponge were carried out,and the influences of feeding speed,reaction temperature,liquid height and feeding way on the compactness of titanium sponge were studied. The results show that the average barrel rate of titanium sponge can reach t...
Abstract: Process of vanadium precipitation by hydrolysis is closely related to the properties of vanadiumcontaining solution such as the content of impurities,concentration of vanadium species,temperature and pH value of the solution. Vanadium pentoxide with purity > 99.5% satisfying the application requi...
Abstract: W,N-TiO2/ SiO2/ Fe3O4 magnetic photocatalyst was prepared by low temperature sol-gel method,and its adsorption and catalytic degradation of methyl orange in organic wastewater respectively during the dark reaction and photoreaction was studied. Through degradation of methyl orange with different con...
Abstract: Rutile nano-titanium dioxide was modified by surfactant to improve its dispersion in organic solvents. The modified nano-titanium dioxide was respectively used in furniture paint,anticorrosive paint and automotive paint. The ultraviolet resistance of the paints was achieved by detecting the color di...
Abstract: surface composite camshaft was prepared by casting and powder metallurgy,and the microstructure of this surface composite material was analyzed by XRD,SEM and EDS. The results show that the surface composite layer is VC particle reinforced iron matrix composite,and the composite has a good metallurg...
Abstract: TiO2 interlayer was deposited on the mica substrate,and the VO2 film was fabricated on the TiO2 interlayer under UV light irradiated. Video-based contact angle measuring device was used to analyze the hydrophilicity of the TiO2 interlayer. XRD,FTIR and UV-vis were used to analyze the microstructure ...
Abstract: By X-ray diffraction (XRD) and scanning electron microscopy (SEM),the process mineralogy of modified and unmodified extracted vanadium tailings,especially the influences of mineralogical characteristics of iron (Fe) and vanadium (V) on the reduction,were studied in this paper. The effects of carbon ...
Abstract: In view of the present situation that the existing industrial technology for vanadium precipitation is not suitable for the carbonated leachate of vanadium slag with high content of calcium and phosphorus,the process of precipitating vanadium by ammonium carbonate ((NH4)2CO3) was adopted for that le...
Abstract: The composition,phase and morphology of vanadium-bearing tailings from Pan Steel and Cheng Steel were studied in this paper. Combining with the previous studies by others,the valences and possible phases of vanadium in the residue were obtained. By the induction of the research progress of extractin...
Abstract: In this paper mineralogical characteristics of sulfide in vanadium titano-magnetite of Panzhihua Hongge area,Sichuan province had been extensively investigated by the methods of optical microscope,SEM,EMPA,XRF etc. The observation results reveal that metal (Co,Ni,Cu,Fe,etc) sulfide-based pyrrhotite ...
Abstract: In order to explore the effect of air humidification on sintering performance of vanadium-titanium magnetite concentrate,sinter layer surface air humidification test had been carried out in the laboratory. From the experimental results it is found out thatspraying 0.4% water after 18 minutes of the ...
Abstract: Vanadium-titanium sinter produced by acid pellets and alkaline materials mixed sintering of thick material layer is a new sintering process where high alkalinity and acidity ball are made from the upcoming vanadium-titanium iron concentrate powder and then mixed with fuel and returned ore for furthe...
Abstract: In this paper the effects of different Mg O content on resulting sinter quality were investigated. The results show that with Mg O content increasing,sinter indexes are affected to different degrees. Appropriate Mg O content benefits to the yield,drum strength and the metallurgical properties of sin...
In order to explore the transformation mechanism of phosphorus during sintering process,minisintering experiment was carried out based on the thermodynamic calculation,and the component and phase of calcined product were analyzed. The results show that the dephosphorization ratio reached up to 20% i...
Abstract: The impact of slag basicity,initial sulfur content and temperature of hot metal on the arsenic content in hot metal were studied in this paper.Results show that arsenic content increases with basicity (% CaO)/(% SiO2). When basicity exceeds 1.16 arsenic content changes slowly. Increasing slag basici...
Abstract: Oxygen and nitrogen analyzer,metallographic examination,SLIME,SEM and EDS techniques had been used to study the cleanliness of plain carbon structural steel Q235B produced via KR-BOF-ArCC process under the conditions of substituting iron ore for partial scarp in converter. The results show that the ...
Abstract: A 1∶2.5 hydraulics modle experiments were conducted to simulate a 72 t two- strand slab continuous casting tundish. The impact of using flow control devices and turbulence inhibitor on the flow field in tundish at different flow rate of flow had been investigated in order to gain the best combinatio...
Abstract: Considering the some bubbles separation during smelting Cr12N ferritic stainless steel,the ingot had been examined by an optical microscope,and the optical image had been analysed by using a microimage analysis & process software. It is found out that when the melting pressure is 0.6 MPa and sol...
Abstract: The present paper refers to the situation of single-pass welds in structural steels and,in particular,the mechanical properties and microstructures of the coarse grained heat affected zones (CGHAZs) that exist in the parent material close to the fusion line. Frequently,the toughness in these areas i...
Abstract: The oxygen element is harmful to Si steel,and the RH refining deoxidation method has an important effects on oxygen concentration. Based on the industrial non-oriented Si steel containing Al,the effects of RH refining deoxidation method on non-metallic inclusions was investigated. The results show t...
Abstract: 2.9%Si-0.77%Al non-oriented silicon steel slab had been produced by the thin slab process with a thickness of 20 mm. After hot rolling,normalizing,cold rolling and annealing,the resulting sheet had been investigated in terms of microstructure,precipitates and magnetic properties. The results show th...
Abstract: Narrow strip steel was used to make the frame tubes. The crack occurred to Q195 when frame tubes were formed. The cause of frame tube cracking is studied by the means of scanning electron microscope,OM,EDS. The result shows that the reason of frame tube crack is Fluxes involved,silicate inclusions E...
Abstract: Microstructure refinement is an important means to improve the performance of the steel and oxides metallurgy is an important method of refining microstructures. In this paper SEM observation and hardness measurement had been made on the as-cast and as-rolled steel with submicron-CeO2 particle addit...
