Abstract: Blast furnace is the most mature way to smelt vanadium tatino-magnetite,but the smelting of vanadium titano-magnetite in blast furnace needs to be added with ordinary ore and the TiO2 content in slag is too low to be used. In order to achieve full vanadium tatino-magnetite smelting,a new rotary kiln...
Abstract: The effect of dissolved chlorine(Cl2) in crude titanium tetrachloride(TiCl4) on the product quality and vanadium removal process by aluminum powder was studied using the industrial devices of a titanium sponge plant as test platform.The results show that the content of dissolved Cl2 in crude TiCl4 h...
Abstract: The effects of mechanical stirring intensity,ultrasonic current intensity and leaching time on acid consumption and leaching ratio for vanadium leaching process respectively in ultrasonic and mechanical field were investigated.The results show that with increase of stirring intensity,the acid consum...
Abstract: Vanadium carbonitride was prepared by vanadium pentoxide and carbon powder in laboratory conditions.Six temperature curves and seven different carbon contents were adopted to determine the optimum reaction temperature and carbon addition.The results show that the content of vanadium and nitrogen in ...
Abstract: The composition of ferrovanadium smelting slag is mainly controlled by adjusting CaO addition during the ferrovanadium production. The addition amount of CaO will affect the physical and chemical properties of the slag at high temperatures,the occurrence state of vanadium and total vanadium(TV)conte...
Abstract: Using MLA mineral phase analyzer and optical microscope,the compositions and iron distribution of magnetic vanadium slag with different particle sizes,and the influence of metallic iron(MFe) on roasting-acid leaching were investigated.The results show that magnetic vanadium slag is made up of MFe an...
Abstract: In order to develop Na3V2(PO4)3(NVP) cathodes with high performance for sodium ion batteries,a modified carbon-coated NVP was synthesized by sol-gel method.The crystal structure and phase analysis of the samples were carried out by X-ray diffraction(XRD).The spectral characteristics and group compos...
Abstract: In this study,porous Ti-5 Ag alloy was fabricated by powder metallurgy approach with Ti and Ag powders as raw materials and different content of NH4HCO3 as space holder.The results show that the phase composition of the porous Ti-5 Ag alloy is α-Ti. With increase of NH4HCO3 addition,the density of t...
Abstract: Nitrogen content in aerospace grade vanadium-aluminum(V-Al) alloy has an important influence on properties of the downstream titanium alloy.Nitrogen in V-Al alloy mainly exists as atoms with free state or ions with combination state,and removal for both of nitrogen atoms and ions under vacuum was ex...
Abstract: Two kinds of VCp reinforced composite wear-resistant alloys with different Mn contents were developed and the Q&P heat treatment process was adopted in order to develop a kind of composite wear-resistant alloy with higher toughness.The effects of different Mn contents and different carbon partition ...
Abstract: In this paper,thermodynamic calculation and analysis are carried out for preparation Ti4O7.With the help of differential thermal-thermal gravimetric analysis,the technological conditions for preparing Ti4O7 with titanium powder as reductant are explored,the sintering temperature is 850 ℃ and the sin...
Abstract: 5 CrNiMo hot work die steel samples were produced with various amounts of vanadium(V)and strontium(Sr) as well as different adding modes of vanadium,thermal fatigue properties of the samples were tested and analyzed.The results show that both the amount of V and Sr and the adding mode of V have an e...
Abstract: The phase compositions,microstructure and Ti C distribution of carbonized blast furnace slag(BF slag) obtained separately using air cooling and water quenching were studied by polarization microscope,SEM-EDS and MLA analysis,etc.The results show that there’s a large difference on the main mineral co...
Abstract: A low grade vanadium-titanium magnetite contains 17.92% of TFe(total Fe) and 6.19% of TiO2.Using the process of tailings discarding by dry pre-concentration followed with staged grinding and concentration,an iron concentrate containing 60.57% of TFe and 7.89% of TiO2 can be obtained,and recovery rat...
Abstract: Tangshan Iron and steel blast furnace slag were used to prepare CaO-MgO-SiO2-Al2O3 glass ceramics by melting method.And using the differential thermal analysis,X ray diffraction,scanning electron microscopy and other means had been utilized to study the effects of nucleating agents of different type...
Abstract: In this paper,the trend of sulfur in the process of titanium slag smelting and the form of sulfur in raw materials and products are studied. The results show that 27. 97% and 35. 74% of sulfur from the feedstock turned into metallic iron and slag phases,respectively; and the rest turned into precipi...
Abstract: Taking high phosphorus iron ore as the research object. the feasibility of gasification dephosphorization is analyzed theoretically from the views of oxygen potential diagram,thermodynamics and advantage area map,and the influence of different carbon content and additive ratio on the rate of gasific...
Abstract: Carbon-containing pellets of Bayan Obo iron ore concentrate and the other ordinary iron ore concentrate were used for the isothermal reduction experiments at 950 ~1 100 ℃.Under the same reduction conditions,the features of the carbon-containing pellets of Bayan Obo iron ore concentrate were obtained...
Abstract: According to the solidification characteristics of crack sensitive steel,the physical and chemical properties of the mold fluxes which could be applied in the steel are analyzed,and the improvement of the crystallization rate of the mold fluxes and the control of heat transfer are the main measures ...
Abstract: The dissolution behavior of Al2O3 in Ca O-Al2O3-B2O3 slag system during casting high Al and Mn steel was studied by rotating cylinder method. The effects of Al2O3 rod diameter,temperature and the composition of protective slag on the dissolution behavior of Al2O3 were investigated.All results show t...
Abstract: The shape and composition of inclusions in samples during secondary refining process were observed.A certain number of Al2O3 and Mg O·Al2O3 spinel inclusions were found besides liquid complex inclusions in tundish samples,which is caused by reoxidation during continuous casting.Then,The calcium trea...
Abstract: Thermal simulation experiments of Ti-V-Mo micro-alloying steel under various coiling temperatures were carried out by Gleeble-3500 thermal simulated test machine to analyze the influence of coiling temperature on microstructure,precipitate and hardness. Experimental results show that: when coiling t...
Abstract: Based on the production process characteristics and quality requirements of bearing steel,industrial test and actual production data had been compared to analyze the main metallurgy process which can bring titanium uptaking in the steel.According to thermodynamic calculation the effects of oxygen ac...
Abstract: The hot deformation behavior of GH4169 alloy were investigated by single-pass isothermal compression tests with Gleeble-3500 D simulated machine. The investigated variable included the deformation temperature ranging from 900 ℃ to 1 150 ℃,strain rate ranging from 0.01 s-1 to 10 s-1 and the deformati...
Abstract: In this work the bainitic dual-phase steel with combined high strength and good toughness had been achieved through ultra-fast cooling after hot rolling.The effect of microstructure on hole expansion performance and mechanical properties had been studied.The resulted steel is mainly composed of ferr...
Abstract: In this study,the effect of process parameters on the varieties and evolution of texture during rolling process were investigated by controlling the rough rolling temperature,finish rolling temperature and the thickness of finished products.The result shows that as the rough rolling temperature decl...
Abstract: The fracture behavior of large angle Q420 steel was studied by means of optical microscope,scanning electron microscope,mechanical property test and Charpy impact. The fracture behavior was analyzed mainly by metallographic structure,mechanical property,fracture analysis and inclusions analysis,in o...