Abstract: The factors respectively influencing the single and cyclic roasting of vanadium slag during the novel calcification process for vanadium extraction were studied,and the thermodynamics and kinetics were also analyzed.The results show that the morphology of clinker by single calcination with lump and ...
Abstract: In this article,bismuth vanadate(BiVO4)was hydrothermally synthesized respectively using sodium vanadate produced by sub-molten salt process from vanadium slag and bismuth nitrate pentahydrate(Bi(NO3)3·5H2O)as raw materials.The optimal synthesis conditions for bismuth vanadate pigments were determin...
Abstract: The precipitation process of ammonium polyvanadate was studied in this paper.At the optimum conditions of 32~40 g/L for vanadium concentration in the solution by roasting-leaching process,0.8~1.2 of precipitant addition coefficient,above 65 ℃ of temperature before the acid addition,1.7~2.1 of precip...
Abstract: In this study,the phase evolution and C content of the products during synthesis of TiCxN1-x by carbothermal reduction-nitridation in a vacuum furnace using ilmenite,coke powder and high purity nitrogen as raw materials were investigated via thermodynamic calculations and experiments.The phase evolu...
Abstract: Combined with the experimental analyses and numerical simulation,the factors influencing the scarring were analyzed based on the current situation of scarring in an oxidation reactor for chloride process titanium dioxide.The results show that the high temperature gas tends to adhere on the cold wall...
Abstract: The influence of several kinds of typical organic treatment agents on the thermal stability of titanium dioxide was investigated.The results exhibited that the thermal stability followed the order:polysiloxane> 3-aminopropyltriethoxysilane>trimethylolpropane>octyltriethoxysilane>triethanolamine.The ...
Abstract: In order to improve the comprehensive mechanical properties and corrosion resistance of titanium alloy used as medical implant materials,Ti-29Nb-4Mo-13Ta-9Zr alloy was prepared by powder metallurgy.The effects of sintering temperature on the phase compositions,microstructure,compressive strength,ela...
Abstract: Graphene oxide/titanium dioxide(TiO2-GO) composites were prepared by hydrothermal synthesis method using graphene oxide and industrial titanium liquid as raw materials.The microstructure,functional groups and phases,photocatalytic properties of the composites were analyzed by scanning electron micro...
Abstract: Lithium vanadium phosphate(Li3V2(PO4)3) has become a potential and promising lithium ion battery cathode material due to its high energy density,good structural stability,safety performance and low temperature performance.The Li3V2(PO4)3/C samples were synthesized by carbothermal reduction method fr...
Abstract: In this paper,the self propagating process for preparation of the vanadium based hydrogen storage battery alloy was controlled intelligently,and the comparison between the conventional PID control and the intelligent PID control was carried out.The results show that compared with the sample by conve...
Abstract: In this paper, TiO2/graphene composites were prepared by combination of graphene powder with the calcinated TiO2 from orthotitanic acid, which was synthesized by acidolysis and neutralization of metatitanic acid followed by spray drying.The structure and morphology of the composites were characteriz...
Abstract: TiO2 tubular nanomaterials were synthesized using a novel solvent thermal system combined with heat treatment.The effect of TiF4 concentration on morphology of the nanomaterials was investigated.The mass of the tubular structure increased with the increase of TiF4 concentration.When the concentratio...
Abstract: High vanadium Fe-based surfacing coating was prepared by plasma arc surfacing technology. The effects of plasma arc surfacing current on phase composition, microstructure, hardness and wear resistance of high vanadium composite Fe-based surfacing coating were studied by scanning electron microscope(...
Abstract: In order to optimize the extrusion process of Mg-5Al-1Zn-0.8Ti magnesium alloy containing titanium, the microstructure and mechanical properties of the samples were tested and analyzed under different extrusion temperatures and extrusion speeds. The results show that with the extrusion temperature i...
Abstract: Phenol-containing waste water has become a major issue in the water treatment industry because of its low biodegradability, intractability, and toxicity. Using steel slag as raw material, acid and alkali modified steel slags are obtained by different methods. Scanning electron microscopy(SEM) and sp...
Abstract: TiO2 in the waste SCR catalysts was reduced by aluminum, and the SiO2-TiO2-CaO-Al2O3-CaF2-Na2O slag system was selected. As the reduction process progresses, TiO2 in the slag gradually decreases and Al2O3 gradually increases. The product titanium can transfer into the iron liquid to form the iron-ti...
Abstract: In order to investigate the effects of magnetic field on the reduction of iron oxides, 93% Fe2O3-2.5%SiO2-4.5% CaO system had been taken to carry out a constant magnetic field(CMF) test. The reduction conversion efficiency of Fe2O3, the phase composition and micromorphology of the reaction product, ...
Abstract: In this paper the impact of basicity on the green ball quality and cruslring strength of pellets had been investigated by changing the ratio of A fine powder and B mineral powder. When the basicity is increased, the incidence strength and the compression strength of the green ball gradually decrease...
Abstract: Calcium ferrite as binder phase of high basicity sinter has greatinfluence in the metallurgical properties of sinter. In this paper the influence of MgO and Al2O3 on the formation process was studied. According to the precious study on calcium ferrite, different amounts of MgO and Al2O3 were added t...
Abstract: In order to clarify the influence of TiO2-containing slag on the corrosion of refractories used in blast furnace hearth, the corrosion behavior of blast furnace hearth refractories such as carbon composite brick and corundum brick in CaO-SiO2-MgO-Al2O3-Cr2O3-TiO2 slag was investigated by using finge...
Abstract: In order to solve the problem that BOF slag can not be returned back into BOF due to its high P content,the dephosphorization mechanism of gasification and influencing factors,effect of slag remaining operation and lance controlling on dephosphorization,and morphology of gasification dephosphorizati...
Abstract: Continuous casting EMS technology for optimizing internal quality of 20CrMnTiH(FQ)gear steel bloom had been researched,based on the equipment of 360 mm×450 mm bloom casting machine conditions.In order to determine the position of F-EMS applied to the end of liquid core,numerical simulation calculati...
Abstract: The solidification mathematical model was established by using X80 steel slab.The variationof the temperature and solidification rate of the 230 mm×1 280 mm X80 pipeline steel slab was simulated during the solidification process under different continuous casting process conditions.The effects of su...
Abstract: In order to solve the problem of large amount of inclusions in ultra-low carbon steel,these measurement such as optimizing the modifier composition,controlling the temperature of RH inlet temperature,adjusting the time interval between adding Al to deoxidize and alloying,and optimizing composition o...
Abstract: Effects of Ti-oxide metallurgy and TMCP process on the matrix mechanical properties and high heat input welding property of Q345 grade steel plate were studied under industrial conditions.Microstructures and inclusion characteristics were analyzed by OM,SEM and EPMA.High heat input welding simulatio...
Abstract: Ni-Mo-C alloy electrode material was prepared on pure copper by electroplating.Linear sweep voltammetry(LSV),cyclic voltammetry curve(CV) and electrochemical impedance spectroscopy(EIS) were used to investigate reaction mechanism of hydrogen evolution in 1 mol/L NaOH solution.The results show that h...
Abstract: In this paper,GH4169 alloy was treated by three different heat treatment processes.The microstructure and mechanical properties of GH4169 superalloy under three different heat treatment processes were observed and studied by OM,SEM,the micro-hardness and impact test.The results show that different h...