Abstract: The oxidation roasting can effectively remove the harmful element S of the ilmenite.In this work,the existence form of S element,process conditions of oxidative desulfurization and desulfurization mechanism for Panzhihua ilmenite were studied in detail.The results show that most of S for Panzhihua i...
Abstract: Vanadium-aluminum alloy is primarily used as additive in production of titanium alloy,super-alloy and some special alloys,and vanadium pentoxide is an important raw material for the preparation of vanadium-aluminum alloy.Under laboratory conditions,vanadium pentoxide meeting the requirements for van...
Abstract: The meta-titanic acid was prepared by hydrolysis with adding crystal seeds,and the influences of curing time,curing methods and stirring time on the particle size and distribution of meta-titanic acid were studied.The variations of particle size and quantity of the product in hydrolysis process were...
Abstract: In order to find the causes which affect the cleanliness of TiO2 by sulfate process,the estima-tion method for cleanliness during the dispersity testing was studied.The result shows that the cleanliness is a key factor influencing the dispersity evaluation,while the coarse particles in the product a...
Abstract: The process of laser gas nitriding on the surface of commercial pure titanium TA2 was carried out and the compact coating layer without crack defects was obtained by 5 kW continuous wave CO2 laser under N2 environment.The microstructure of nitriding coating layer was analyzed by scanning electron mi...
Abstract: For accurate judgment of the black fringe defects found by macroscopic test in TC6 titanium al-loy bar,the microstructure of the alloy bar was firstly observed by metalloscope to locate the defects,then the defects were characterized by SEM,which shows that the black fringe areas are caused by segre...
Abstract: The wear tests under various temperatures and loads were performed for TC11 alloy and H13 steel on a high temperature wear tester,and their wear behaviors were comparatively studied.TC11 alloy and H13 steel represent totally different wear behaviors with the variations of temperature and load.For th...
Abstract: The effects of controlled rolling and cooling process on the microstructure and properties of Ti micro-alloyed high strength steel were investigated by metalloscope,SEM and TEM,etc.The results show that the highest yield strength and tensile strength of the steel sample are respectively 670.7 MPa an...
Abstract: The paper introduced an efficient way to use electric furnace gas,provides data support for tita-nium slag process in future.Using thermodynamic calculation,relationship between pellet metallization rate and gas heat generated are obtained.According to the actual heat required in producing in metall...
Abstract: In the past thirty-five years,two families of microalloyed (MA) steels have been developed for high strength bar and forging applications.The first family was introduced in 1974 and represented the medium carbon steels to which were added small amounts of niobium or vanadium.These early medium carbo...
Abstract: The separation methods of vanadium and chromium from solution containing vanadium and chromium,including solvent extraction,chemical precipitation,ion exchange,crystallization and electro-chemical methods were introduced.The technical principles and process flows of the 5 methods mentioned above wer...
Abstract: Vanadium and titanium iron concentrate pellets conaining carbon after drying,750℃ and 1 000℃ roasting had been used to investigate phase,microstructure,composition and intensity change under low temperature calcination by means of XRD,SEM/EDS,chemical analysis and strength testing.The results show t...
Abstract: In order to determine factors influencing the lumpy zone,soft melting and dropping zone and re-duction of vanadium oxide in hearth in blast furnace,a simulation experiment on reduction of vanadium ox-ide has been performed in combination of thermodynamic calculation.The results prove that improving ...
Abstract: Due to high vanadium content in Chenggang blast furnace slag,the influence of vanadium on properties of viscosity,melting temperature and desulfurization was investigated in this paper.The results show that when V2O5 content increases,the slag possesses short slag feature,slag viscosity increases to...
Abstract: With the development of high grade steels,it becomes more and more difficult for BOF to pro-duce low sulfur steel.At present main factors causing resulfurization during semi steel smelting process in Pangang Group Xichang Iron&Steel Company are incomplete skimming desulfurization slag,contributi...
Abstract: The microstructure and mechanical properties and Nb,V precipitations of Q420 GJ steel plate for construction was investigated after hot rolling and normalizing.Quantitative analysis of Nb,V precipi-tates had been performed by electrolytic method for hot rolled and normalized steel plates,the precipi...
Abstract: The Ti-Mg treatment was carried out in low carbon steel,and its effects on inclusion (type,size,distribution) and microstructure and the possible mechanism of inclusions induced nucleation had been studied by scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS),and optical micr...
Abstract: Based on technological conditions of 50 t converter melting at Tangshan Iron&Steel corp.,the numerical simulation of two-phase flow between oxygen gas jet and liquid steel in the bath has been car-ried out by Fluent software where the flow field of liquid steel in the bath impacted by the oxygen...
Abstract: Microstructure evolution of low carbon Si-Mn Q&P steel during partitioning had been investiga-ted by means of SEM and X-ray diffraction,and variation of retained austenite content and its effects on the plasticity of Q&P steel had been characterized.The results show that partition temperatur...
Abstract: The influences of residual elements Cr,Ni and Cu content on the microstructures and properties of SPHC hot rolled strip steel was studied by means of tensile testing machine,hardness tester,metallo-graphic microscope and SEM.The results show that the structure of SPHC hot rolled strip steel is compo...
Abstract: In this paper 82 B steel billet cast by a Chinese domestic steel plant had been investigated with regards to the distribution of V-shape segregation in transverse and longitudinal section,and center segre-gation of carbon as well.The results showed that V-shape segregation occurred in central equiax...
Abstract: The influence of different kinds of dearsenization agents on the arsenic removal in the hot metal is studied in this paper under laboratory conditions based on the idea of dearsenication via reduction process.The result indicates that low temperature is beneficial to the process of arsenic removal r...
Abstract: Fine-graded specularite was used to carry out magnetic roasting experiment with a laboratory e-lectric rotary kiln in order to investigate effects of roasting temperature,roasting time,carbon content and size fraction,and charge ratio on roasting yield.The results showed that the process condition w...
Abstract: The mineralogical structure of Jidong magnetite pellets was systematically studied.The results indicated that main crystal phase of Jidong magnetite pellets was hematite,and both roasting and prehea-ting process imposed effect on the microscopic characteristics of the pellets.When preheat temperatur...
