Abstract: In order to solve the production problem of poor performances of vanadium slag pellets during the process of sodium salt roasting and hot water leaching of vanadium slag pellets,the technology of pelletizing and drying for vanadium slag fine powder was studied.The laboratorial and industrial test re...
Abstract: Using the alkaline leaching solution containing vanadium produced by a factory in Panzhihua as the raw material,the main impurities and the removal of silicon in the alkaline leaching solution were analyzed,and the influences of desilication agent species,dosage of desilication agent,pH of leaching ...
Abstract: In order to improve the electrochemical activity and energy density of negative electrolyte of vanadium redox flow battery,the viscosity,conductivity and electrochemical performances of the negative electrolytes at different compositions were investigated.The results show that the vanadium concentra...
Abstract: TiO2 powder was prepared by sol-gel method using butyl titanate(C16H36O4Ti4) as the titanium source and anhydrous ethanol(C2H6O) as the organic solvent respectively,and then the obtained TiO2 was doped with copper and silver.The products were characterized by scanning electron microscopy(SEM) and X-...
Abstract: Ti2Al(C,N)was synthesized by hot pressing sintering under different carbon content and nitrogen pressure.The phase was analyzed by X-ray diffraction(XRD).The three-point bending strength was tested and the fracture morphology was analyzed by scanning electron microscopy(SEM).The results showed that ...
Abstract: Macroporous TiO2,with the pore size higher than 50 nm,is an important material.This paper proposed and preliminarily studied a method for preparing macroporous titanium dioxide(rutile) from Panzhihua ilmenite by two steps of thermal pretreatment-hydrochloric acid leaching.The results show that both ...
Abstract: Based on the chemical compositions,microstructure and mechanical properties of new titanium-alloy Ti-3Al-2Mo-2Zr(TA24),the properties at typical high temperatures of the alloy were investigated.The test plates of the alloy were welded by GTAW,and the postweld heat treatment was carried out at specif...
Abstract: The effect of VC addition amount on the microstructure and mechanical properties of the TiC-based cermet at different temperatures was investigated using BSE,EDS,XRD and density,hardness,bending strength tests.The results show that the core and rim phases in the TiC-based cermet have the same crysta...
Abstract: Near-alpha multicomponent high temperature titanium alloy was prepared through powder metallurgy using titanium hydride and titanium powder as the main raw materials,and the effect of titanium hydride content on the microstructure and mechanical properties of the alloy was investigated.The results s...
Abstract: In this paper,the plexi glass with infrared intelligent heat insulation was prepared respectively at low and high temperature polymerization conditions,via adding nano-vanadium dioxide slurry obtained from nano-vanadium dioxide powder into the prepolymerof methyl methacrylate.The plexi glass with in...
Abstract: In order to optimize the quality and properties of Mg-8Al-0.6Zn alloy for automobile,vanadium-titanium modification of Mg-8Al-0.6Zn-xV-0.5Ti(x=0,0.1,0.5,0.8) specimens was carried out,and the microstructure and mechanical properties of specimens with different vanadium content were tested and analyz...
Abstract: In this paper,new vanadium-bearing aluminum alloy 6061-0.8 V specimens for mechanical shell were extruded at different extrusion speeds and temperatures,and the mechanical properties were tested and analyzed.The results show that when extrusion speed is increased from 2 m/min to 4.5 m/min and the ex...
Abstract: In this paper blast furnace slag with different content(0%,15%,25%,35%) was selected to carry out quenching and tempering reconstruction on steel slag,and then high-temperature gas quenching had been performed.Influence of gas quenching behavior on the elimination of f-CaO by reconstructed slag had ...
Abstract: In this paper the effect of Fe(OH)3 on the improvement of mechanical properties of titanium gypsum through addition gypsum enhancer had been investigated.The experimental results indicate that the effect of gypsum enhancer on improving the mechanical properties of titanium gypsum is significantly re...
Abstract: Activated carbon was used as the research object,and the simulated flue gas with different concentrations of SO2 was processed by microwave irradiation.Through varying microwave heating temperature,heating time,activated carbon quality,flue gas flow rate and SO2 concentration,the factors influencing...
Abstract: In order to explore the effect of MgO/Al2O3 ratio on crystallization behavior of molten modified slag in the preparation progress of blast-furnace-slag-based slag fiber,theoretical crystallization temperature and species and contents of precipitated phases at different values of MgO/Al2O3 ratio in c...
Abstract: The carbothermic reduction kinetics of oolitic hematite with graphite was investigated at temperature of 1 173~1 373 K by using thermogravimetric method.The effects of temperature on reduction degree and reaction rate were studied.The reduction reactions were fitted to several solid-state reaction m...
Abstract: In order to study the law of indirect reduction in the process of carbothermal reduction,experiments were carried out on a 20 kg/h pushing boat heating furnace.The changes of gas composition in the process were recorded by on-line gas analyzer,and composition of reduced samples was measured.The infl...
Abstract: The final carbon content of the molten iron is saturated during the traditional blast furnace smelting process.However,the reaction in the flash furnace occurs at the stage of material floating and the carburizing effect of the solid charge and the molten iron in the blast furnace cannot occur witho...
Abstract: The mineral composition and microstructures of pellets are important factors affecting their metallurgical properties.The mineral types,contents,morphology,size,distribution and pore characteristics of acid pellets from different steel works were quantitatively studied by polarizing microscope and X...
Abstract: Effect of MgO/Al2O3 and burden structure on droplet properties of comprehensive burden was studied by simulating actual blast furnace smelting conditions in high temperature drop furnace.The results show that when MgO/Al2O3 increases from 0.9 to 1.0,the softening and melting temperatures of furnace ...
Abstract: The α-Fe2O3 nano-composites with photo-catalytic activity were prepared by solution combustion synthesis using ferric nitrate,copper nitrate and glycine as raw materials.The grain size of α-Fe2O3 is about 30 nm.The products were characterized by XRD,SEM and TEM.The effects of copper nitrate content ...
Abstract: In order to solve the problem that phosphorus content in slag is too high to be recycled directly in converter,the influence of different temperature,alkalinity,FeO content and nitrogen flow rate on gasification dephosphorization rate was systematically studied by means of related hot state experime...
Abstract: The difference of solidification structure and macro quality between trail bloom and normal bloom has been comparatively analyzed for ø380~ø800 mm large round bloom. Some defects such as low ratio of equiaxed crystal zone,high ratio of white band,serious central porosity,cavity and crack are observe...
Abstract: In this paper,the effect of solution temperature and holding time on austenite grain growth of GH3128 alloy was studied.The results show that,with the increase of solution temperature and holding time,the austenite grain size of the alloy increases gradually.Compared with the effect of holding time,...
Abstract: The Tungsten Inert Gas(TIG) welding process was used to weld 0Cr18Ni9 austenitic stainless steel and Q235 carbon steel with ER309 and Ni317 wires of 2.0 mm in diameter.The microstructure,tensile properties and micro-hardness of the welded joint were studied.The results show that when the applied wel...
Abstract: In this paper,the effect of heat treatment process on liquid-precipitated carbides in MC5D cold-rolling roller blank was investigated.The phase transformation and type of carbides in MC5D steel at equilibrium state were calculated by JMatoPro software,and the microstructure of the blank was observed...
Abstract: The mechanical properties,impact toughness and fracture morphology of Q460 steel pipes of different specifications and different quality grades at different test temperatures were studied by means of scanning electron microscopy,mechanical properties test and Charpy impact test.The influences of wal...
Abstract: The surface defects of martensitic stainless-steel table knives were analyzed.The macro-morphology and characteristic of pockmark defects on the surface of martensitic stainless steel were described,and the micro-morphology and component were analyzed by scanning electronic microscopy and energy dis...
