Abstract: Thermodynamic problem is the core issue of the sulfuric acid leaching reactions of vanadium bearing steel slag.According to the mineral compositions in vanadium bearing steel slag,thermodynamic calculation and analysis of the steel slag leaching system were carried out in this paper.The results show...
Abstract: The effects of Si on the electrochemical performance and battery performance of the positive electrolyte of vanadium redox flow battery（VRFB） were studied by cyclic voltammetry,electrochemical impedance spectrum and charge-discharge test.The results indicate that with the content of Si in the electr...
Abstract: Taking the original and final titanium dioxide products from a titanium dioxide factory in 2019 as the object,the influences of iron content and rutile TiO2 content on the whiteness of the product were statistically analyzed.On this basis,samples of different whiteness with similar iron content and ...
Abstract: The parameters of fluidized oxidation of Panzhihua titanium slag were determined by TG-DSC and theoretical calculations,and the roasting experiments at different temperatures were carried out.Furthermore,the titanium slag after modification by fluidized oxidation was characterized by Raman,XRD and S...
Abstract: CdS/TiO2 composite material was prepared by reverse-phase microemulsion method using cetyl trimethyl ammonium bromide（CTAB）,cyclohexane,n-butanol and water as main raw materials.The samples were characterized by field emission scanning electron microscopy（FESEM）,X-ray diffraction（XRD）,ultraviolet vi...
Abstract: The microstructure and elemental distributions of FeV80 alloy were studied by SEM-EDS and FactSage software.The results show that the FeV80 alloy consists of the light grey basic phase（σ phase） and dark gray granular or acicular secondary phase（BCC-A2 phase）.And silicon as the impurity tends to prec...
Abstract: The hydrogenated dehydrogenation（HDH） titanium powder with irregular morphology was spheroidized by RF plasma.The effects of carrier gas flow,powder feeding rate and sheath gas flow on the morphology and properties of titanium powder were studied.In addition,powder injection molding（MIM） experiments...
Abstract: Ti-Fe matrix composites were prepared by cold isostatic pressing（CIP）+ vacuum sintering using Ti,Fe and B4C powders as the raw materials.The effects of the Fe content and volume fraction of the reinforcements on the microstructure and mechanical properties of the composite were discussed.The results...
Abstract: Lithium iron phosphate powder as battery-grade cathode material was prepared by freeze-drying method respectively using LiOH·H2O as lithium source,FeNO3·9 H2O as iron source,NH4H2PO4 as phosphate source,citric acid as carbon source and chelating agent.The effects of sintering process on crystallinit...
Abstract: The hydrogen absorption and desorption properties and electrochemical stability of vanadium-based hydrogen storage alloy for negative electrode of V3TiNi0.56Al0.3 battery at different ball milling speeds and sintering temperatures were tested,compared and analyzed.The results show that with the incr...
Abstract: In order to investigate the causes for fatigue fracture of the electron beam welding（EBW） joints,fatigue tests were conducted on joints welded by TA1 medium plates with 30 mm of thickness,and S-N curve and conditional fatigue limit were obtained.The macro and micro structures and mechanical properti...
Abstract: The casting experiments for the new magnesium alloy Mg-9 Al-1 Zn-0.6 V used for automotive parts were carried out at different pouring temperatures.The microstructure,tensile properties and corrosion resistance of the obtained magnesium alloy were tested and analyzed.The results show that with the p...
Abstract: Effects of processing parameters on emission concentration of the fuel NOx in the sintering process were investigated using tube furnace.The results show that the average concentration of fuel NOx increases first and then decreases with increasing the sintering temperature,reaching a maximum with th...
Abstract: In order to solve the complex operation involved in steel slag reconstruction caused by the fluctuation of chemical compositions of steel slag,the general regression neural network（GRNN） model was constructed,taking the chemical compositions of steel slag,quicklime,fly ash and calcium fluoride（CaF2）...
Abstract: Through uniaxial compression test of high titanium blast furnace slag（HTBFS） pervious concrete,it is found that the compressive strength of HTBFS pervious concrete can reach 9.2 MPa,which meets the design strength requirements of no-fines concrete on road base.And the morphology of failure surface f...
Abstract: In view of the poor stability in engineering application of steel slag caused by the volume expansion,the methods of acetic acid immersion and micro-silicon powder addition were adopted to reduce the volume expansion ratio of steel slag according to the hydration reaction mechanism of free calcium o...
Abstract: In this paper,a coupled mathematical model of temperature field and chemical reaction for producing ultrafine iron powder by carbon thermic reduction in a steel strip furnace is established.The simulation results are in good agreement with those of related experiments.Temperature distribution of mat...
Abstract: To investigate influence of CO-CO2 mixture on the gas-solid decarburization reaction of Fe-C alloy sheet,the high carbon domain Fe-C alloy sheets with 1 mm the thickness was used to conduct decarburization reaction in weak oxidizing atmosphere（Ar-CO-CO2）.The results show that the coverage rate of ox...
Abstract: The different minerals were mixed with titanium-containing calcium ferrite Ca3TiFe2O8 to study the melting temperature and mineral composition in sintering process of titaniferous iron ore by DSC and XRD methods.Results showed that the melting temperature of samples was lower than that of the each i...
Abstract: Appropriate MgO content in pellets can improve their metallurgical properties and is beneficial to blast furnace smelting.Therefore,it is very important to determine suitable MgO content in pellets.In this experiment,Yanshan No.3 type of iron concentrate powder,dolomite powder and high magnesium pow...
Abstract: The influence of Ce on microstructure and carbide of austenitic stainless steel 21-4 N both at as-cast and as-forged states were analyzed in this paper.The results show that the dendritic spacing,pearlite-like colony and the primary carbide M7C3 of as-cast steel can be refined significantly by addin...
Abstract: For Cr12 MoV steel produced by a domestic steel plant via EAF → LF → VD → die casting process,the amount of rare earth（La,Ce） added is 134×10-6,and the samples is taken from liquid steel during VD process at different times.ASPEX automatic scanning electron microscope was used to analyze the composi...
Abstract: The titanium-containing inclusions in the titanium-containing microalloyed steel were completely electrolytically extracted by an aqueous solution electrolytic method,and the non-destructive separation of the inclusions was achieved by a physical magnetic separation method.Samples of titanium-contai...
Abstract: A systematic study has been made to investigate the microstructural evolution of GH4169 alloy under hot compression at temperatures from 900 to 1 150 ℃ with a reduction in thickness of 50%.It is shown that with increasing temperature,the microstructure of the compressed alloy evolves from a deformed...
Abstract: Static recrystallization behavior of high strength steel with high Ti microalloying was studied by a Gleeble 3500 thermal simulation testing machine and stress relaxation method.The results show that the static recrystallization process is accelerated and the deformation rate has little effect on th...
Abstract: The effects of ferrous(Fe2+) and ferric(Fe3+)ions on pickling behaviour of originally hot-rolled and blasted ferrite stainless steel（FSS） in HCl- based electrolytes were investigated in this work through weight-loss test,macro profile,SEM morphology,self-corrosion potential test, polarization curves...
Abstract: The surface quenching of QT450 ductile iron was carried out by using a self-developed laminar plasma system for surface quenching.The size,microstructure,hardeness of quenching zone was studied by optical microscope（OM）,microhardness tester,X-ray diffraction（XRD）,and scanning electron microscope（SEM...
Abstract: According to the technical requirements of Saudi Aramco and the technical parameters of 5 000 mm hot plate mill in NISCO,, the alloying design and process parameters had been deliberately selected,and thus producing 260 mm×2 570 mm section blanks with uniform composition and excellent low-profile st...
Abstract: In this paper green production practice of hot rolled ribbed bars in several domestic production lines under newly issued national standard has been present,and the process problems which is widespread in many production lines has been analyzed and summarized.In the end,corresponding solutions for p...
Abstract: The existing problems of injection desulfurization had been analyzed.Based on the principle of KR desulfurization,the numerical simulation of rotary injection desulfurization process of injection desulfurization gun had been carried out.Through comparison,It is found out that the rotation of injecti...
