Abstract: The process of oxidization-reduction-hydrochloric acid leaching was adopted to selectively leach the ilmenite from Panxi area.The effect of oxidization-reduction pretreatment on the grain size,surface morphology and microstructure of the ilmenite,and the influence of leaching conditions on the leach...
Abstract: The sulfate process of manufacturing TiO2 pigments based on the Ti resources in Panxi area usually discharges 6 to 8 tons of dilute waste acid(20% concentration) per ton of products,which inevitably causes serious environmental problems.The dilute acid digestion of ilmenites can effectively reuse th...
Abstract: The phase structure and morphology of Panzhihua ilmenite and the synthetic rutile produced by Panzhihua ilmenite were deeply analyzed by XRD and SEM.It shows that CaO mainly dissolves with SiO2,MgO,FeO and TiO2 in silicate accompanying phase of the ilmenite.During the production of synthetic rutile,...
Abstract: It is of great significance to investigate the behaviors of vanadium in the blast furnace(BF)with V-Ti magnetite as main raw materials.The reduction mechanism of vanadium in the lumpy zone of BF was explored by theoretical analysis and simulation experiments.It is indicated by the thermodynamic calc...
Abstract: The influence of temperature and molten salt component on the solubility of V2O5 in Na Cl-KCl-NaF molten salt system was researched by isothermal saturation method.The possible reactions between the materials in the molten salt system were calculated by using the thermodynamic software Factsage7.0,a...
Abstract: VOSO4 used for vanadium battery was prepared by reduction of high purity V2O5 with H2O2,and the preparation technology and reaction mechanism were studied.The enthalpy and Gibbs free energy change of the reaction for preparing VOSO4 were calculated,and the charge and discharge performance testing we...
Abstract: The alumina hydrates were obtained by hydrolysis at different pH with sodium metaaluminate as raw materials.The structure and morphology of the obtained alumina hydrates were characterized by XRD and SEM,and their hydrolysis processes were analyzed by combination with the advantage zones of various ...
Abstract: Dense SiO2 film was coated on TiO2 pigment by sol-gel method using ethyl orthosilicate(TEOS) as silica source.The effects of main factors on the coating process were studied.Through evaluating the coating results by SiO2 deposition quantity and acid solubility,the optimum parameters were determined....
Abstract: TC4 titanium alloy was borided by molten salt electrolysis.The effect of current density on the thickness,composition,microstructure,phase and hardness of borided layer was studied by glow discharge optical emission spectroscopy(GDOES),scanning electron microscopy(SEM),X-ray diffraction(XRD)and micr...
Abstract: In this paper,the influence of Cr content on the microstructure and properties of TC4 alloy was studied.The results show that the Cr element can decrease the transition temperature of β phase in TC4 alloy.When the Cr content is lower than 3% TC4 alloy possesses duplex microstructure,while the phase ...
Abstract: Vanadyl oxalate with high quality was prepared using vanadium pentoxide and oxalic acid as raw materials,and the effects of reaction temperature and time,and adding coefficient of oxalic acid on the quality of vanadyl oxalate solution and reaction process were investigated.The results show that vana...
Abstract: The neural network model of heat treatment process for high chromium cast iron modified by vanadium and titanium,which is the structure of 6×24×12×2,was established by the method of neural network algorithm,with vanadium content,titanium content,quenching temperature,tempering cooling mode,tempering...
Abstract: The blast furnace slag containing titanium(BFST) was characterized by XRF,XRD,SEM and UV-Vis-DRS to determine its feasibility as photocatalyst,and the antibacterial effects of BFST on candida albicans(ATCC10231),escherichia coli(ATCC25922) and staphylococcus aureus(ATCC6538) were investigated by inh...
Abstract: Photocatalytic material of TiO2/SiO2/BFSF was prepared by loading SiO2 and TiO2 on the surface of blast furnace slag fibre(BFSF) in sequence using sol-gel process,with BFSF as the carrier.The effects of SiO2 loading,times of impregnation in TiO2 sol,calcination temperature and recycle times on photo...
Abstract: The fibrosis of molten blast furnace slag was studied by high speed air blowing method using the independently designed and built experimental platform.The fibrosis mechanism of the molten slag was discussed and the factors influencing the diameter and properties of the obtained fiber were analyzed....
Abstract: Titanium gypsum,which is a byproduct in titanium dioxide production by sulfuric acid method,causes environmental contamination during accumulation.Investigations on the properties and characters of titanium gypsum have important guiding significance on proper selection of recycle and utilization met...
Abstract: In order to address the problems occurred during the wet desulfurization process for sintering vanadium titanium bearing iron ore,some measures had been taken,such as dismounting all flue gas bypass ducts,optimizing individual system operating parameters and Ca/S molar ratio,reducing the failure rat...
Abstract: The viscosity of the vanadium titano-magnetite slag from Chengde iron & steel company is bigger than the common slag,the separation of the slag-iron is difficult,and the iron content of the slag is about 2%,which not only makes the usage of the slag is difficult,but also leads to the higher prod...
Abstract: The viscosity,softening temperatue and melting temperature of blast furnace slag with different basicity had been investigated in this paper.The results show that Baogang's BF slag is typical of short slag,when the temperature is above 1 400℃,the slag has very low viscosity is very low(about 0.5 Pa·...
Abstract: A three dimensional transient mathematical model for the 100 t oxygen top-blown converter has been carried out using the numerical simulation software fluent.The impact depth,impact area and molten bath velocity distribution had been obtained at different oxygen lance height and oxygen lance nozzle ...
Abstract: There is some amount of solid particle of CaO in dephosphorizing slag of molten steel.In order to investigate the diffusion rate of phosphor in CaO particle,CaO particle suspending with wire of Mo were put into molten slag of CaO-SiO2-FetO-P2O5 at the temperature between 1 385℃ and 1 450℃,and then w...
Abstract: The production process of sulfur content control during the smelting of ultra-low sulfur X65QS pipeline steel in Yong Gang steel used 110 tons of electric furnace,LF refining,VD refining and continuous casting is present in this paper.The sulfur content at each individual process steep had been stri...
Abstract: The continuous casting square billets are directly transferred into rolling stands immediately after being cut off.An uneven temperature field occurs on the billet as a result of elimination of reheating step.The temperature field of billets being directly transferred into rolling line process and t...
Abstract: Hydraulic model and numerical simulation had been utilized to study the behavior of single strand tundish field of high speed casting tinplate.RTD curves had been obtained through the hydraulic model using impulse response method.The curves had been used to analyze the flow patterns of the tundish.T...
Abstract: The effect of asymmetric rolling on microstructure,texture evolution,and formability of SUS430 ferritic stainless steel sheet has been investigated by using X-ray diffraction(XRD) and optical microscopy.The results showed that grains could be appropriately refined by asynchronous rolling,but the gra...
Abstract: The influence of continuous cold rolling and reversible cold rolling processes on the microstructure,texture and magnetic properties of 50W470 steel had been investigated by metallographic microscope and XRD ray diffraction instrument.Optical observation showed that the average grain size of steel s...
Abstract: The purpose of this paper is to present research whose goal was to improve the substrate in galvanized or galvannealed sheet steel,such that high strength can be obtained while maintaining good global formability(tensile ductility),local formability(sheared-edge ductility),and good spot weldability....
Abstract: Spangle characteristic and distribution of alloying elements coating on the steel substrate of 55% Al-43.4% Zn-1.6% Si alloy are carried out by using OM,SEM and EDS testing means.Coating corrosion resistance behavior of different areas was studied by polarization curve,and the formation process of h...
Abstract: Crack defects are commonly found on the steel bar products and caused by many factors.Analysis on the causes of the crack defect of bar products by means of the optical microscopy,scanning electron microscopy(SEM) and energy dispersive spectrum(EDS).It is found out that factors causing crack defects...
