Abstract: According to the characteristics of vanadium extraction from vanadium slag,selective extraction of vanadium from vanadium-chromium (V-Cr) containing solution by ion exchange was put forward to evade V-Cr separation problem. Partial vanadium was selectively adsorbed from high concentration of vanadiu...
Abstract: The mechanism of the thermal decomposition of NH4VO3 was investigated by TG-DSC in this paper. The analysis results indicate that the decomposition process experiences four steps including the initial three endothermic reactions and a last exothermic reaction. The kinetic parameters of the formation...
Abstract: The concentration process of titanium into rutile phase in the high-titanium slag was observed at different quenching temperatures using the high-titanium slag produced from the titanium concentrate in Panxi area as raw material,and the precipitation and growth kinetics of rutile were also investiga...
Abstract: According to the characteristic of titanium slag produced with ilmenite concentrate in Panzhihua as raw material that the content of calcium and magnesium impurities is high but the TiO2 concentration is low,the analysis for the critical control point in process of melting salt chlorination with tho...
Abstract: Using Fe3O4 nanoparticles as the kernel,SiO2 inert layer as the isolation layer,tetra-n-butyl titanate as the precursor,ammonium tungstate and ammonium nitrate as doping sources,magnetic W,Ncodoped TiO2 photocatalyst was prepared by low-temperature sol method. The properties of the magnetic photocat...
Abstract: Nano-sized vanadium catalysts were prepared under different calcination temperatures,and the micro-morphology,activity,mechanic strength and corrosion resistance of the catalysts were tested and analyzed. The results show that the nano-sized vanadium catalyst prepared at 650 ℃ has the best activity,...
Abstract: Taking the two kinds of titanium white RA and RB produced by sulphate process in a domestic corporation as research targets,the influence of Cr content on whiteness and brightness of the crude titanium white pigments was studied. For the corresponding A (raw materials of RA) and B (raw materials of ...
Abstract: The kinetics of Bi VO4 prepared by the solid reaction of Bi (NO3)3·5H2O and NH4VO3 was investigated using TG-DSC under different heating rates. The results show that the process undergoes two stages. The first period corresponds to the solid and liquid-state reactions and the second period is a soli...
Abstract: The thermodynamics of carbothermal reduction of vanadium and chromium oxides in vanadium tailings was calculated and analyzed. It is shown that the reduction sequence of vanadium oxide is V2O5 →VO2→V2O3→VO→VC→[V],and the reduction sequence of chromium oxide is CrO3→CrO2→Cr2O3→Cr4C →[Cr]. Using elect...
Abstract: In order to improve the quality of slag fiber,iron tailings were used for adjusting the blast furnace slag. The effect of acidity on the viscosity,melting temperature and mineral compositions of the adjusted blast furnace slag was investigated,and the quality of slag fiber was evidenced to be improv...
Abstract: Systematic analysis of various influence factors on converter gas recovery under the special processes of smelting vanadium-containing molten iron was carried out in this paper. Through industrial experiments,the condition of operation and control level of the relevant processes were optimized,inclu...
Abstract: There is a large amount of vanadium titanium magnetite resource in Panzhihua area. Sulfide in the resource is associated with cobalt,nickel,copper and other valuable metals. In this paper sulfide had been investigated by the laser micro spectral analysis,spectral semi-quantitative analysis and elect...
Abstract: Transverse cracking resistance is generally displayed in low-C low-N microalloyed steels,but not in microalloyed steels with higher C levels. This paper discusses hot ductility work and commercial experience concerning V microalloyed steels with C levels between 0.05%~0.6 %. These V additions reduce...
Abstract: In this paper,the effects of boron-bearing iron concentrate content,roasting temperature and roasting time on the magnetization indexes of the carbon and boron bearing pellets were investigated by ternary and quadratic orthogonal regression and blank test. The results showed that the magnetic effect...
Abstract: Sintering basic characteristics of Xuanhua Steel single titanium containing iron ore powder were determined in order to conduct match optimization test. The results showed that sinter tumbler index increased with increasing mixed iron ore binding phase strength,while low temperature RDI index and mo...
Abstract: In this paper the impact of process parameters such as acidic material sintered grain size,carbon ration and alkalinity on the microstructure of shunt granulation sintered ore had been studied. It was found out that when particle size range of acidic materials expanded,material layer permeability im...
Abstract: Due to strongly complementary of ironsand to blast furnace bag dust in terms of the chemical composition and size distribution,the feasibility of synergistic utilization of ironsand and blast furnace bag dust had been investigated where the reduction experiments using ironsand- BF bag dust compound ...
Abstract: Experiments were carried out in the lab to simulate dropping zone of blast furnace in a high temperature oven,and the effect on charge softening temperature range,melting temperature range,maximum pressure,droplet comprehensive index and other high temperature physical properties at different basici...
Abstract: In this paper the desulfurization ability of CaO-Al2O3-SiO2-TiO2 slag was studied through the desulfurization experiment by using 10 kg inductive furnace and theoretical calculation by using thermodynamic software Factsage,in order to determine the impact of binary basicity,mass percent of Al2O3 and...
Abstract: Based on chemical compositions and metallurgical properties of mould powder for hypoperitectic steel,the crystallization temperature and crystalline phase of experimental flux film in different basicity under laboratory conditions were observed by the method of process mineralogy. The results showed...
Abstract: Cold model of moving bed of Corex melter gasifier was set up. Flow pattern of solid,geometry and size of deadman were obtained by the trace of tracer particles in the moving bed. Furthermore,the effect of height of moving bed and gas flow on the height and cross- sectional area of deadman were studi...
Abstract: In order to determine the reduction process of ironmaking system under the oxygen blast furnace condition,a mathematical model of coupling gas solid heat transfer with chemical reaction in the blast furnace had been developed and been used to obtain the heating systems and the atmosphere change rule...
Abstract: In order to investigate the difference of molten iron flow field in furnace hearth under normal erosion and adherent dross erosion,basing on the fluid mechanics two 3D mathematical models had been developed,which were used to describe the molten iron flow fields before/after hearth bottom erosion an...
Abstract: The causes of cracks forming in abrasion- resistant steel plate NM360 after cutting had been investigated by means of metallographic microscope and SEM. Observation shows that there are several segregations in the mid- depth of the plate and network carbide distributes along the grain boundary. The ...
Abstract: The analysis of causes and influencing factors of hardness non- uniform in the 65 Mn saw blades with hot rolled steel had been performed by means of hardness,optical microscopy,SEM and EDS. The result shows that tnon- uniform hardness of 65 Mn hot rolled steel is caused by non- uniform spacing of pe...
