Abstract: Commercial tests for fluidized-bed chlorination without sieve plate were carried out using titanium slag high or low in calcium and magnesium as main raw materials.In view of the fact that high calcium and magnesium content tends to cause agglomeration of the burden and blockage of the sieve plate w...
Abstract: In this paper,the feasibility of vanadium precipitation with(NH4)2SO4-Na2SO4 mixed salt is studied.The results indicate that vanadium precipitation ratio is at 98.9%~99.3% as the mass ratio of(NH4)2SO4to Na2SO4 ≤ 0.3.With TV percentage of 49.85%~50.43%,Na2O of 0.11%~0.51%,S of 0.100%~0.448%,and K2O ...
Abstract: Micro-arc oxidation(MAO) and hydrothermal synthesis(HS) technologies were used to prepare bio-film on the surface of titanium alloy.Surface morphologies and formation procedures of the films at various stages were observed by scanning electron microscope,and element and phase compositions of biologi...
Abstract: Mineralogical characteristics including structures,chemical compositions and changing patterns of ilmenite in Hongge vanadium-bearing titaniferous magnetite in Panzhihua,Sichuan,were detailedly studied by optical microscope,scanning electron microscope(SEM),electron probe micro-analysis(EPMA),X-ray ...
Abstract: Using vanadium iron slag and magnesite as main raw material,appling co-grinding,machine press forming,high temperature firing processes,a kind of synthetic refractory raw materials can be produced,which has main phases of corundum and spinel,and it's density greater than 3.0 g/cm3,the rate of water ...
Abstract: Mathematical and physical models of granulating process were established to elaborate the granulating mechanism of the gas quenching process of liquid steel slag,and flow fields of granulation process under different conditions were calculated through the FLUENT software.The simulation results show ...
Abstract: Physico-chemical properties including chemical composition,particle size distribution and phase of BF dust,dust collected by bag-type collector and converter sludge were analyzed.The feasibility for dezincification by reduction was validated by thermodynamic software Factsage and the initial tempera...
Abstract: To determine the appropriate parameters for hearth lining protection by using TiO2 containing materials,the influence of TiO2 content in slag,temperature,reaction time,ratio of slag to hot metal,and w(CaO)/w(SiO2)slag binary basicity on reduction behavior of Ti in slag with low TiO2 content,i.e.,1.0...
Abstract: Mineral compositions of Panzhihua vanadium-bearing titaniferous magnetite are complex,and its concentrate was low in iron grade and high in TiO2 content.With the application of staged grinding and staged separation process,the iron grade in the concentrate reached 54%,but TiO2 content in it was stil...
Abstract: Vertical flow of liquid metal in cylindrical and hexahedral vessels driven by a helical magnetic field was investigated in the experiments.The helical magnetic field was constructed with several pieces of permanent magnets magnetizing in the radius direction.The vertical velocity distribution of liq...
Abstract: In view of the converter-argon blowing-continuous casting process for production of carbon structural steel 40Mn,oxygen and nitrogen contents and compositions,amounts and variation of microscopic and macroscopic inclusions in casting blanks were systematically analyzed.The results show that the aver...
Abstract: The size,number and morphology of inclusions in IF steel produced by BOF-RH-CC process were analyzed by scanning electronic microscopy(SEM),energy dispersive X-ray spectroscopy(EDS),and metal original position analysis(OPA).The results show that inclusions distribute uniformly along the width direct...
Abstract: Mineral compositions,microscopic morphology and distribution characteristics of AOD stainless steel slag were analyzed by X-ray diffraction,electron microscope and specialized optical microscope respectively.It is suggested that dominant phases in the slag include C2S,C3MS2,augite,and rankinite,and ...
Abstract: Solution treatments of duplex stainless steel 2101 were performed at 950℃,1 000℃,1 050℃ and 1 100℃ for 30 min respectively.The microstructure variation of the steel at different solution temperature was analyzed by XRD and quantitative metallography,and the hardness and corrosion-resistant propertie...
Abstract: TSCR was simulated to develop high-strength non-oriented electrical steel with 3% of Si,0.83% of Al and 2.99% of Mn by solution strengthening,grain refinement strengthening and dislocation strengthening.The microstructures of hot rolled plates,normalized plates and annealed plates were analyzed.Furt...
Abstract: At present,most of the insulating fluid for non-oriented electrical steel contains chromium,and should be cured at high temperature.On the basis of analyzing the characteristics of the film-forming substance,a kind of eco-friendly insulating fluid with lower curing temperature for non-oriented elect...
Abstract: Large amounts of surface cracks were found on the 300 mm × 360 mm continuous casting blooms for hypo-peritectic steel produced by EAF + LF + VD processes after cooling.The cracks were analyzed by optical microscopy,SEM and EDS,and thermo dynamical calculation was carried out at the same time in orde...
Abstract: Transverse corner cracks in boron steel were studied through TEM,SEM and optical microscope analyses,and the formation reasons of the cracks were analyzed.The results indicates that BN and AlN precipitate around austenitic grain boundaries due to undercooling at the corner,which aggravates the crack...
Abstract: The dimensional accuracy,residual stress and collapsing resistance of HFW casing,SEW casing and seamless casing were studied in this paper.The results show that compared with seamless casing,HFW and SEW casings are much better in the aforementioned characteristics.Moreover,employment of SEW process ...
Abstract: The influence of deformation temperature on the hot ductility of as-cast and hot-rolled austenitic stainless steel Cr15Mn9Cu2NiN is investigated via high-temperature tensile tests.Results show that at 1 250℃,reduction of areas(RA) in both as-cast and hot-rolled specimens are higher than 85%.As the d...
Abstract: Vanadium microalloyed steel forgings provide lightweight,high performance and cost effective solutions for many critical automotive components in the drivetrain and chassis of modern cars and trucks.These high strength steel forgings are already widely used in regions with developed automotive indus...
