钢铁钒钛

Preparation of High Purity Metal Titanium by Iodization

Hu Zhifang, Jiang Honglin, Xu Dong, Cui Yan, Yin Yanxi

2018, 39(5): 1-4. doi: 10.7513/j.issn.1004-7638.2018.05.001

Abstract(214) PDF(10)

Abstract:
In this paper,the influences of raw material temperature and K value on the average deposition rate for iodization reaction were studied using industrial sponge titanium as raw material.The results show that the deposition rate increases with raw material temperature rising at a fixed K value,while ...

Study on the Reaction of Ti⁰ and Ti³⁺ Ions in Molten Salt

Mu Hongbo

2018, 39(5): 5-8. doi: 10.7513/j.issn.1004-7638.2018.05.002

Abstract(109) PDF(1)

Abstract:
The molten salts containing titanium ions with lower valence state were prepared by the reaction of titanium sponge and TiCl₄ in NaCl-KCl molten salts（molar ratio of NaCl∶KCl=1∶1）. The average valence state of titanium ions was calculated, and then the molten salts with Ti³⁺ and Ti~0 were obtained b...

Extraction of Titanium（Ⅳ）from Hydrochloric Acid Solutions by Tributylphosphate and Decanol

Mao Xuehua, Liu Daijun

2018, 39(5): 9-15. doi: 10.7513/j.issn.1004-7638.2018.05.003

Abstract(63) PDF(4)

Abstract:
The extraction of titanium（Ⅳ） from hydrochloric acid solutions by tributylphosphate（TBP） and decanol was studied. The results demonstrate that the extraction ratio of titanium（Ⅳ） increases with the increased concentration of TBP, decanol and chloride ion. Titanium（Ⅳ） exists as TiCl₄（TBP）₂ Decanol in...

Removal Techniques for Impurities in Acidic Ammonium Salt Precipitation of Vanadate

Guo Jike, Yin Zhaoqian, Jiang Lin, Fu Zibi

2018, 39(5): 16-23. doi: 10.7513/j.issn.1004-7638.2018.05.004

Abstract(123) PDF(8)

Abstract:
The impurities separation technology and the dissolution kinetics analysis of impurities in ammonium polyvanadate were studied, in order to solve the problem of high impurities content in ammonium polyvanadate prepared by acid ammonium salt precipitation from vanadium and sodium solution. The result...

Structural Changes of Metatitanic Acid during Hydrolysis Process of Industrial Titanyl Sulfate Solution

CHEN Hua, TIAN Cong-xue, ZHU Yu-xuan

2018, 39(5): 24-29. doi: 10.7513/j.issn.1004-7638.2018.05.005

Abstract(175) PDF(10)

Abstract:
Using low concentration industrial titanyl sulfate solution as raw material,metatitanic acid was prepared via the self seeded thermal hydrolysis sulfate process.The structural changes of metatitanic acid during hydrolysis of industrial titanyl sulfate solution were investigated.The as-prepared sampl...

Temperature Control of Acid Leaching Process for Calcified Clinker of Vanadium Slag

SHEN Biao

2018, 39(5): 30-36. doi: 10.7513/j.issn.1004-7638.2018.05.006

Abstract(107) PDF(1)

Abstract:
The calcified clinker of vanadium slag is usually leached by sulfuric acid to obtain V-containing solution. During the industrial process of acid leaching, the leaching temperature increases abnormally and vanadium in the solution will be precipitated to decrease the recovery rate. In this paper, th...

Effect of Aluminum Sulfate on Abrasion Ratio of TiO₂-V₂O₅ Denitration Catalyst

Xiao Yuting

2018, 39(5): 37-42. doi: 10.7513/j.issn.1004-7638.2018.05.007

Abstract(72) PDF(3)

Abstract:
TiO₂-V₂O₅ denitration catalyst with high wear resistance was prepared using aluminum sulfate as additive.Through analyzing the wear strength,denitration activity,pore structure and specific surface area of the catalyst,effects of aluminum sulfate additive were studied,and the mechanism of wear resis...

Effect of Conductive Agent on Electrochemical Performance of Cathode Materials of Lithium Ion Batteries

Liu Tiantian, Cui Xumei, Wang Ningjun

2018, 39(5): 43-46,64. doi: 10.7513/j.issn.1004-7638.2018.05.008

Abstract(286) PDF(7)

Abstract:
The effect of conductive agent on the electrochemical performances of the cathode material of Li₃V₂（PO₄）₃ lithium ion batteries（LIBs） was studied respectively using graphene, Ketjen black and acetylene black as the conductive agent, and then the ratio of Ketjen black was adjusted to investigate its ...

Research on Relationship between Microstructures and Mechanical Properties of TA15 Bars

Tang Jing, Huang Deming, Yang Xiongfei, Liu Xibin

2018, 39(5): 47-53. doi: 10.7513/j.issn.1004-7638.2018.05.009

Abstract(94) PDF(1)

Abstract:
Lamellar and equiaxed microstructures of TA15 bar were characterized by BEI and EBSD techniques,focusing on the alloying elements distributions and their effects on the corresponding mechanical properties.Image Quality（IQ）and chemical composition analysis indicate that 20% of alloying elements in so...

Effect of Mo Addition on Microstructure and Properties of （Ti,V,Mo）C-based Cermets

Chen Min, Zhang Xuefeng, Xiao Xuan

2018, 39(5): 54-59. doi: 10.7513/j.issn.1004-7638.2018.05.010

Abstract(82) PDF(1)

Abstract:
The effects of Mo addition and sintering temperature on the microstructure and mechanical properties of（Ti,V,Mo）C-based cermets were investigated by BSE ＆ EDS,IPP,XRD and density,hardness,bending strength tests.The results show that the hard phase is constituted by black core phase and grey phase in...

Effect of Cooling Mode for Heat Treatment on Microstructure and Hardness of TC4 Alloy Prepared by TiH₂ Powder Metallurgy

Malan, Piao Rongxun, Yang Shaoli, Li Junhan, Fan Xingping, Fang Gongjun

2018, 39(5): 60-64. doi: 10.7513/j.issn.1004-7638.2018.05.011

Abstract(103) PDF(5)

Abstract:
TC4 alloy prepared by TiH₂ powder metallurgy was subjected to heat treatment and the effects of different cooling methods on microstructure and hardness of the TC4 alloy were studied. The results show that both solid solution treatment and aging treatment can densify the alloy. In addition, the cool...

Application of Rutile Nano-TiO₂ in Automotive Paint

Wu Jianchun, Du Jianqiao, Wang Bin, Xin Huijin

2018, 39(5): 65-70. doi: 10.7513/j.issn.1004-7638.2018.05.012

Abstract(62) PDF(1)

Abstract:
Several kinds of rutile nano-TiO₂ used in automotive paint were analyzed by UV-Vis spectra,SEM,BET and CPS.On the basis of characterizations,rutile nano-TiO₂ PGNR-508 with aluminium paste was used as the raw materials to prepare the optically variable automotive paint,and the weather resistance and ...

Research Status and Prospect of Vanadium Extraction from Vanadium Titano-magnetite

Chang Fuzeng, Zhao Beibei, Li Lanjie, Geng Litang, Zhang Zhenquan

2018, 39(5): 71-78. doi: 10.7513/j.issn.1004-7638.2018.05.013

Abstract(215) PDF(9)

Abstract:
The process of vanadium extraction from vanadium-titanomagnetite was described systematically in this paper.The methods of direct vanadium extraction,vanadium extraction from vanadium slag and steel slag were mainly introduced.The advantages and disadvantages of various methods were analyzed and dis...

Roasting and Induration Mechanism in Magnesia Pellet

Wang Shuchao, Shi Xuefeng, Zhang Qiaorong, Zhao Kai

2018, 39(5): 79-85. doi: 10.7513/j.issn.1004-7638.2018.05.014

Abstract(140) PDF(3)

Abstract:
Magnesia pellets have become a major trend in the development of the pellets in the future due to its good metallurgical performance.However,problems such as low strength and high demands for roasting process parameters are existing for magnesia pellets.Therefore,it is of important practical signifi...

Effect of Calcium Fluoride on Slag Cementitious Activity and Volume Stability

Xu Ying, Wang Qiaoling, Hu Chenguang, Zhang Zizi

2018, 39(5): 86-92. doi: 10.7513/j.issn.1004-7638.2018.05.015

Abstract(151) PDF(2)

Abstract:
The cementitious activity and the volume stability of reconstruction steel slag were improved by adding different proportion of calcium fluoride（CaF₂）.The cementitious activity index of the reconstructed steel slag showed a rising trend with the increase of CaF₂ content.It wass 120% when the amount ...

Optimization of Dephosphorization Rate of Converter Final Slag by Gasification Dephosphorization

Xue Yuekai, Li Chenxiao, Wang Shuhuan, Zhao Dingguo, Chen Jianjun

2018, 39(5): 93-97. doi: 10.7513/j.issn.1004-7638.2018.05.016

Abstract(59) PDF(1)

Abstract:
The coke powder can be used to remove the P element in the final slag in the form of gaseous form,and the slag can be recycled after treatment.In order to further improve the gasification dephosphorization rate,the optimum industrial experiment was carried out.The results showed that the optimum amo...

Study on the Mineralogical Characteristics of Titano-magnetite of V-Ti Magnetite Ore in Panxi Region

Li Junhan, Sun Ning, Ma Lan, Yang Shaoli

2018, 39(5): 98-105. doi: 10.7513/j.issn.1004-7638.2018.05.017

Abstract(157) PDF(6)

Abstract:
The x-ray diffraction phase qualitative analysis,optical microscope,electron probe micro-analyzer,scanning electron microscope and linear regression analysis were employed for the mineral composition,chemical composition and the inner structural feature of the titano-magnetite of V-Ti magnetite ore ...

Effect of Microwave-assisted Silicon Carbide on pH/COD of Coking Wastewater

Shi Yan, Zhao Ying, Zhao Xin, Kong Zheng, Feng Yingying

2018, 39(5): 106-110. doi: 10.7513/j.issn.1004-7638.2018.05.018

Abstract(57) PDF(1)

Abstract:
In this paper the effect of microwave irradiation and silicon carbide absorbing microwave on the pH and COD of coking wastewater had been studied by changing the microwave heating temperature,the type and amount of silicon carbide.When the time is fixed,the increase of microwave temperature can sign...

Influence of Mineral Structure of Vanadium-titanium Sinter on its Metallurgical Properties

Bai Dongdong, Han Xiuli, Li Changcun, Liu Lei, Chen Qianchong, Zhang Di, Zhao Zhe

2018, 39(5): 111-115. doi: 10.7513/j.issn.1004-7638.2018.05.019

Abstract(43) PDF(2)

Abstract:
The mineral structure of sinter with medium and high titanium content was studied quantitatively by means of polarization microscope.Observations indicates that titanium hematite and titanomagnetite are the main metallic phases in this two sinter,and the binder phases are calcium ferrite,dicalcium s...

Research on Directly Smelting Semi-steel by Blowing CO₂ into Blast Furnace Vanadium-bearing Molten Iron

Luo Yi, Zhang Ting'an, Niu Liping, Liu Zhuolin, Zhang Baojing

2018, 39(5): 116-121. doi: 10.7513/j.issn.1004-7638.2018.05.020

Abstract(57) PDF(2)

Abstract:
The thermodynamics analysis and experimental investigation had been conduct on the system of decarbonization and vanadium protection by blowing CO₂ to smelt vanadium-bearing hot metal.The results show that it is feasible to remove carbon and keep vanadium by CO₂ blowing.In standard state,the transfo...

Precipitation Behavior of Vanadium in HRB500E Steel

Wang Anren, Wang Jinnan, Li Zhaoliang, Qi Jinggang

2018, 39(5): 122-129. doi: 10.7513/j.issn.1004-7638.2018.05.021

Abstract(81) PDF(4)

Abstract:
In this study the solid solution and precipitation temperature of vanadium in steels had been experimentally determined,and the thermodynamics and kinetics of vanadium particle precipitation had been studied.For the steel with chemical compositions of 0.25%C-0.05%V-0.011%N,the V（C,N） particle begins...

Development of Q500q Steel Plate Via Ultra-fast Cooling and Accelerated Cooling System

Feng Lulu, Zhou Wen, Li Pingping, Wu Kaiming

2018, 39(5): 130-135. doi: 10.7513/j.issn.1004-7638.2018.05.022

Abstract(77) PDF(2)

Abstract:
After continuous cooling transformation test on Q500 q steel,a ultra-fast cooling and accelerated cooling technology had been proposed.For the new controlling rolling and cooling process,during the roughing rolling phase, start rolling temperature shall be over 1 050 ℃ and total reduction shall be g...

Development and Welding Thermal Simulation Test of the Normalizing Type 460 MPa Steel for Container

Dong Fujun, Wang Ruizhen, Yang Caifu

2018, 39(5): 136-139. doi: 10.7513/j.issn.1004-7638.2018.05.023

Abstract(49) PDF(2)

Abstract:
A C-Mn-Si base chemistry with Ni addition and V-N microalloying had been designed for producing low yield strength high toughness steel plate via control rolling and normalizing process.The resulted steel plate had been conducted welding thermal simulation test.Welding test results show that with th...

Effect of Bainite Isothermal Temperature on Microstructure and Mechanical Properties of Ultra-high Strength Cold Rolled Transformation Induced Plasticity Steel

Kuang Chunfu, Zhang Jinchao, Zheng Zhiwang, Zhao Juanni

2018, 39(5): 140-143. doi: 10.7513/j.issn.1004-7638.2018.05.024

Abstract(59) PDF(1)

Abstract:
In this paper,C-Si-Mn steels were soaked at 800 ℃ for 120 s,and then rapidly cooled to 350～410 ℃ and held for 600 s to simulate the bainite transformation process.The influence of bainite isothermal temperature on the microstructure and mechanical properties of ultra-high strength cold rolled transf...

Microstructures and Properties of HR800CP Multiphase High Strength Steel Welded Joints

DONG Xian-chun, ZHAO Yang, HAN Ni-dan, ZHANG Yong-qiang, GUO Zi-feng

2018, 39(5): 144-148. doi: 10.7513/j.issn.1004-7638.2018.05.025

Abstract(111) PDF(3)

Abstract:
HR800 CP multiphase high strength steel was welded with laser welding and 80%Ar+20%CO₂gas-shield welding（MAG）with CHW-60 C welding wire.Microstructures and mechanical properties of the joints were studied.The result shows that,the microstructure of the weld center and the heat affected zone withlase...

Analysis on Temperature Field and Stress Field of T-type Long Plate Welding

Liu Jixiao, He Pengfei, Wu Aihui

2018, 39(5): 149-156. doi: 10.7513/j.issn.1004-7638.2018.05.026

Abstract(111) PDF(3)

Abstract:
The numerical simulation of 4 m T-welded joint welding process was carried out by the finite element software Ansys.Using the indirect coupling method,the temperature field was calculated and then the stress analysis was carried out to obtain the stress field.It was found out that there would be a v...

Development of Hot-dip Galvanized Baking Hardened H220BD + Z Steel for Automobile External Application

Hu Huadong

2018, 39(5): 157-161. doi: 10.7513/j.issn.1004-7638.2018.05.027

Abstract(92) PDF(4)

Abstract:
Considering the metallurgy characteristic of baking hardening steels,the YS220 MPa grade baking hardening steel was developed by suitable alloying design and optimizing smelting,hot-rolling and galvanizing processes.The results show the steel has 220～270 MPa yield strength,320～400 MPa tensile streng...

Molecular Dynamics Study of the Structure of Titanium Carbide Nanoparticles during Cooling Process

Lü Yanan, Zhang Shunhu, Chen Dong

2018, 39(5): 162-166. doi: 10.7513/j.issn.1004-7638.2018.05.028

Abstract(80) PDF(1)

Abstract:
The variation of titanium carbide cluster structures during cooling process were studied via molecular dynamics simulation.The influence of titanium carbide cluster size varying from 80 to 5 000 atoms on cluster structure were investigated,and the influence of cooling rate on the cluster structure a...

Cause Analysis of Central Cracks in SPA-H Steel

Xu Mengchun, Li Dejun, Chen Dong, Yu Fuzhi, Jin Xing

2018, 39(5): 167-172. doi: 10.7513/j.issn.1004-7638.2018.05.029

Abstract(52) PDF(1)

Abstract:
Central crack frequently occurred in the forming of a kind of SPA-H steel sheet.The cause for central crack had been investigated by analysis of the chemical composition, metallurgical structure and EDS.It is found out that ferrite segregation band exists in the center of steel sheet, and there are ...

2018 Vol. 39, No. 5