钢铁钒钛

Process on china titanium industry in 2017

JIA Hong, LU Fusheng, HAO Bin

2018, 39(2): 1-7.

Abstract(103) PDF(24)

Abstract:

Experiment Study of Vanadium Titano-magnetite by Full Oxygen Bath Smelting Process

Gao Jianjun, Hong Lukuo, Zhang Jun, Qi Yuanhong, Yan Dingliu

2018, 39(2): 8-13. doi: 10.7513/j.issn.1004-7638.2018.02.001

Abstract(97) PDF(4)

Abstract:
Blast furnace is the most mature way to smelt vanadium tatino-magnetite,but the smelting of vanadium titano-magnetite in blast furnace needs to be added with ordinary ore and the TiO₂ content in slag is too low to be used. In order to achieve full vanadium tatino-magnetite smelting,a new rotary kiln...

Effect of Dissolved Cl₂ in Crude TiCl₄ on Vanadium Removal by Aluminum Powder

Miao Qingdong, Li Kaihua, Chen Aixiang

2018, 39(2): 14-18,31. doi: 10.7513/j.issn.1004-7638.2018.02.002

Abstract(99) PDF(4)

Abstract:
The effect of dissolved chlorine（Cl₂） in crude titanium tetrachloride（TiCl₄） on the product quality and vanadium removal process by aluminum powder was studied using the industrial devices of a titanium sponge plant as test platform.The results show that the content of dissolved Cl₂ in crude TiCl₄ h...

Process and Dynamic Characteristics of Vanadium Leaching Respectively in Ultrasonic and Mechanical Field

Wang Jin, Xiong Kaiwei, Zhang Lin, Zhou Shan, Zhang Guiyi, Yan Yong

2018, 39(2): 19-24. doi: 10.7513/j.issn.1004-7638.2018.02.003

Abstract(41) PDF(2)

Abstract:
The effects of mechanical stirring intensity,ultrasonic current intensity and leaching time on acid consumption and leaching ratio for vanadium leaching process respectively in ultrasonic and mechanical field were investigated.The results show that with increase of stirring intensity,the acid consum...

Experimental Study on Preparation of Vanadium Carbonitride by Vanadium Pentoxide

Yang Yong, Wu Wei, Liu Liu

2018, 39(2): 25-31. doi: 10.7513/j.issn.1004-7638.2018.02.004

Abstract(90) PDF(2)

Abstract:
Vanadium carbonitride was prepared by vanadium pentoxide and carbon powder in laboratory conditions.Six temperature curves and seven different carbon contents were adopted to determine the optimum reaction temperature and carbon addition.The results show that the content of vanadium and nitrogen in ...

Effect of Basicity on Content and Occurrence State of Vanadium in Ferrovanadium Smelting Slag

Wang Tanglin

2018, 39(2): 32-38. doi: 10.7513/j.issn.1004-7638.2018.02.005

Abstract(78) PDF(4)

Abstract:
The composition of ferrovanadium smelting slag is mainly controlled by adjusting CaO addition during the ferrovanadium production. The addition amount of CaO will affect the physical and chemical properties of the slag at high temperatures,the occurrence state of vanadium and total vanadium（TV）conte...

Separation of Magnetic Vanadium Slag and Vanadium Extraction by Calcification Roasting

He Wenyi

2018, 39(2): 39-43. doi: 10.7513/j.issn.1004-7638.2018.02.006

Abstract(71) PDF(5)

Abstract:
Using MLA mineral phase analyzer and optical microscope,the compositions and iron distribution of magnetic vanadium slag with different particle sizes,and the influence of metallic iron（MFe） on roasting-acid leaching were investigated.The results show that magnetic vanadium slag is made up of MFe an...

Preparation of Na₃V₂（PO₄）₃ Cathode Material for Sodium Ion Batteries by Sol-gel Method

Chen Dong, Zhang Xianghua, Ren Neng, Rui Xianhong

2018, 39(2): 44-48. doi: 10.7513/j.issn.1004-7638.2018.02.007

Abstract(357) PDF(23)

Abstract:
In order to develop Na₃V₂（PO₄）₃（NVP） cathodes with high performance for sodium ion batteries,a modified carbon-coated NVP was synthesized by sol-gel method.The crystal structure and phase analysis of the samples were carried out by X-ray diffraction（XRD）.The spectral characteristics and group compos...

Preparation and Mechanical Properties of Porous Ti-5Ag Alloy

Zhao Chaoyong, Zhang Xuefeng, Zhang Lei, Chen Min

2018, 39(2): 49-55. doi: 10.7513/j.issn.1004-7638.2018.02.008

Abstract(172) PDF(4)

Abstract:
In this study,porous Ti-5 Ag alloy was fabricated by powder metallurgy approach with Ti and Ag powders as raw materials and different content of NH₄HCO₃ as space holder.The results show that the phase composition of the porous Ti-5 Ag alloy is α-Ti. With increase of NH₄HCO₃ addition,the density of t...

Discussion on Denitrification of Aerospace Grade V-Al Alloy

Chen Haijun

2018, 39(2): 56-60. doi: 10.7513/j.issn.1004-7638.2018.02.009

Abstract(56) PDF(5)

Abstract:
Nitrogen content in aerospace grade vanadium-aluminum（V-Al） alloy has an important influence on properties of the downstream titanium alloy.Nitrogen in V-Al alloy mainly exists as atoms with free state or ions with combination state,and removal for both of nitrogen atoms and ions under vacuum was ex...

Distribution Characteristics of Alloy Elements in VC Particle Reinforced Composite Wear Resistant Alloy under Different Mn Contents

Nie Junhong, Zeng Songsheng, Chen Pinghu, Nie Huiwen

2018, 39(2): 61-68. doi: 10.7513/j.issn.1004-7638.2018.02.010

Abstract(53) PDF(2)

Abstract:
Two kinds of VCp reinforced composite wear-resistant alloys with different Mn contents were developed and the Q＆P heat treatment process was adopted in order to develop a kind of composite wear-resistant alloy with higher toughness.The effects of different Mn contents and different carbon partition ...

Preparation and Characterization of Ti₄O₇ by Thermal Reduction of Titanium Powder with TiO₂

Zhao Sanchao

2018, 39(2): 69-73. doi: 10.7513/j.issn.1004-7638.2018.02.011

Abstract(226) PDF(21)

Abstract:
In this paper,thermodynamic calculation and analysis are carried out for preparation Ti₄O₇.With the help of differential thermal-thermal gravimetric analysis,the technological conditions for preparing Ti₄O₇ with titanium powder as reductant are explored,the sintering temperature is 850 ℃ and the sin...

Effect of Vanadium and Strontium Addition on Thermal Fatigue Properties of 5CrNiMo Hot Work Die Steel

Wang Zhenguang

2018, 39(2): 74-77. doi: 10.7513/j.issn.1004-7638.2018.02.012

Abstract(57) PDF(2)

Abstract:
5 CrNiMo hot work die steel samples were produced with various amounts of vanadium（V）and strontium（Sr） as well as different adding modes of vanadium,thermal fatigue properties of the samples were tested and analyzed.The results show that both the amount of V and Sr and the adding mode of V have an e...

Effect on the Microstructure of Carbonized BF Slag with Different Cooling Methods

Wang Dongsheng, Huang Jiaxu

2018, 39(2): 78-84. doi: 10.7513/j.issn.1004-7638.2018.02.013

Abstract(81) PDF(7)

Abstract:
The phase compositions,microstructure and Ti C distribution of carbonized blast furnace slag（BF slag） obtained separately using air cooling and water quenching were studied by polarization microscope,SEM-EDS and MLA analysis,etc.The results show that there’s a large difference on the main mineral co...

Iron Recovery of a Low Grade Vanadium-titanium Magnetite and the Element Distributions in the Process

Chen Chao, Zhang Yushu, Zhang Shaoxiang, Han Yuexin

2018, 39(2): 85-91. doi: 10.7513/j.issn.1004-7638.2018.02.014

Abstract(78) PDF(3)

Abstract:
A low grade vanadium-titanium magnetite contains 17.92% of TFe（total Fe） and 6.19% of TiO₂.Using the process of tailings discarding by dry pre-concentration followed with staged grinding and concentration,an iron concentrate containing 60.57% of TFe and 7.89% of TiO₂ can be obtained,and recovery rat...

Effects of Nucleating Agents on Crystalline Phase of CaO-MgO-Al₂O₃-SiO₂ System Glass Ceramics

Gao Yang, Gui Yongliang, Hu Binsheng, Song Chunyan

2018, 39(2): 92-96. doi: 10.7513/j.issn.1004-7638.2018.02.015

Abstract(130) PDF(4)

Abstract:
Tangshan Iron and steel blast furnace slag were used to prepare CaO-MgO-Si_O2-Al₂O₃ glass ceramics by melting method.And using the differential thermal analysis,X ray diffraction,scanning electron microscopy and other means had been utilized to study the effects of nucleating agents of different type...

Study on Trend of Sulfur in Titanium Slag Smelting Process with the Boundary Titanium Concentrate

Zhao Qing'e

2018, 39(2): 97-101. doi: 10.7513/j.issn.1004-7638.2018.02.016

Abstract(57) PDF(3)

Abstract:
In this paper,the trend of sulfur in the process of titanium slag smelting and the form of sulfur in raw materials and products are studied. The results show that 27. 97% and 35. 74% of sulfur from the feedstock turned into metallic iron and slag phases,respectively; and the rest turned into precipi...

Comparative Study of Microstructure Changes in Vanadium Titanium Sinter and Ordinary Sinter during Reduction Process

Yang Guangqing, Yang Wenkang, Li Xiaosong, Yin Sibo, Zhou Ziqing

2018, 39(2): 102-109. doi: 10.7513/j.issn.1004-7638.2018.02.017

Abstract(70) PDF(4)

Abstract:
The reduction process of vanadium titanium sinter and ordinary sinter is studied in laboratory simulated blast furnace.Heating process immediately ceases when the preset temperatures reaches 500 ℃,600 ℃,700 ℃,800 ℃,900 ℃,900 ℃ isothermal holding,1 000 ℃,1 100 ℃,1 200 ℃,1 100 ℃,1 400 ℃,1 500 ℃,and th...

Theoretical and Experimental Study on Gasification Dephosphorization in High-phosphorus Iron Ore

Wang Hui, Zhang Jiansong, Sun Ruijing, Sun Caijiao, Wang Xiaoyuan, Fu Junkai

2018, 39(2): 110-114. doi: 10.7513/j.issn.1004-7638.2018.02.018

Abstract(65) PDF(3)

Abstract:
Taking high phosphorus iron ore as the research object. the feasibility of gasification dephosphorization is analyzed theoretically from the views of oxygen potential diagram,thermodynamics and advantage area map,and the influence of different carbon content and additive ratio on the rate of gasific...

Investigation on the Reduction Features of Carbon-containing Pellets of Bayan Obo Iron Ore Concentrate

Ding Shengli, Zhao Zengwu, Gai Shaoqun, Kang Yi, Qiao Guoping, Han Chunliang

2018, 39(2): 115-120. doi: 10.7513/j.issn.1004-7638.2018.02.019

Abstract(73) PDF(2)

Abstract:
Carbon-containing pellets of Bayan Obo iron ore concentrate and the other ordinary iron ore concentrate were used for the isothermal reduction experiments at 950 ~1 100 ℃.Under the same reduction conditions,the features of the carbon-containing pellets of Bayan Obo iron ore concentrate were obtained...

Application of Continuous Casting Mold Fluxes in Crack Sensitive Steel

Wang Xingjuan, Tian Kuo, Zhu Liguang, Wang Haonan, Fan Yapeng

2018, 39(2): 121-126. doi: 10.7513/j.issn.1004-7638.2018.02.020

Abstract(141) PDF(3)

Abstract:
According to the solidification characteristics of crack sensitive steel,the physical and chemical properties of the mold fluxes which could be applied in the steel are analyzed,and the improvement of the crystallization rate of the mold fluxes and the control of heat transfer are the main measures ...

Study on the Dissolution Behavior of Al₂O₃ for CaO-Al₂O₃ Based Slag

Xu Jinzhong, Han Yihua, Bi Yanxue, Yang Fan, Zhu Liguang

2018, 39(2): 127-131. doi: 10.7513/j.issn.1004-7638.2018.02.021

Abstract(61) PDF(2)

Abstract:
The dissolution behavior of Al₂O₃ in Ca O-Al₂O₃-B₂O₃ slag system during casting high Al and Mn steel was studied by rotating cylinder method. The effects of Al₂O₃ rod diameter,temperature and the composition of protective slag on the dissolution behavior of Al₂O₃ were investigated.All results show t...

Control of Reoxidation Product in Oil Casing Steel

Fang Zhongqiang, Sun Yanhui, Zhu Wei, Wen Bang, Wang Zhen

2018, 39(2): 132-136,145. doi: 10.7513/j.issn.1004-7638.2018.02.022

Abstract(56) PDF(2)

Abstract:
The shape and composition of inclusions in samples during secondary refining process were observed.A certain number of Al₂O₃ and Mg O·Al₂O₃ spinel inclusions were found besides liquid complex inclusions in tundish samples,which is caused by reoxidation during continuous casting.Then,The calcium trea...

Influence of Coiling Temperature on Microstructure and Property of Ti-V-Mo Micro-alloying Steel

Ye Xiaoyu

2018, 39(2): 137-140. doi: 10.7513/j.issn.1004-7638.2018.02.023

Abstract(68) PDF(2)

Abstract:
Thermal simulation experiments of Ti-V-Mo micro-alloying steel under various coiling temperatures were carried out by Gleeble-3500 thermal simulated test machine to analyze the influence of coiling temperature on microstructure,precipitate and hardness. Experimental results show that: when coiling t...

Research on Controlling Titanium Content in Bearing Steel during Secondary Refining

Wang Le, Liu Liu, Yao Tonglu, Zhao Junpu

2018, 39(2): 141-145. doi: 10.7513/j.issn.1004-7638.2018.02.024

Abstract(73) PDF(3)

Abstract:
Based on the production process characteristics and quality requirements of bearing steel,industrial test and actual production data had been compared to analyze the main metallurgy process which can bring titanium uptaking in the steel.According to thermodynamic calculation the effects of oxygen ac...

Hot Compression Deformation Behaviors and Microstructure Evolution of GH4169 Alloy

Jiang Shichuan

2018, 39(2): 146-152. doi: 10.7513/j.issn.1004-7638.2018.02.025

Abstract(104) PDF(11)

Abstract:
The hot deformation behavior of GH4169 alloy were investigated by single-pass isothermal compression tests with Gleeble-3500 D simulated machine. The investigated variable included the deformation temperature ranging from 900 ℃ to 1 150 ℃,strain rate ranging from 0.01 s^-1 to 10 s^-1 and the deformati...

Effect of Microstructure on Mechanical Properties of Hot Rolled Bainitic Dual-phase Steel

Yu Chong, Wu Teng

2018, 39(2): 153-156. doi: 10.7513/j.issn.1004-7638.2018.02.026

Abstract(62) PDF(2)

Abstract:
In this work the bainitic dual-phase steel with combined high strength and good toughness had been achieved through ultra-fast cooling after hot rolling.The effect of microstructure on hole expansion performance and mechanical properties had been studied.The resulted steel is mainly composed of ferr...

Effect of Ferrite Rolling Process on Texture of Ultra Deep Drawing Steel

Wang Jiangong, Zhou Zheng, Hao Leilei, Zhou Xun, Xia Yinfeng, Kang Yonglin

2018, 39(2): 157-164. doi: 10.7513/j.issn.1004-7638.2018.02.027

Abstract(63) PDF(2)

Abstract:
In this study,the effect of process parameters on the varieties and evolution of texture during rolling process were investigated by controlling the rough rolling temperature,finish rolling temperature and the thickness of finished products.The result shows that as the rough rolling temperature decl...

Analysis on Fracture Failure of Large Angle Q420 Steel for UHV Transmission Project

Huang Yao, Liu Weining, Li Feng, Fu Mingxiang, Han Junke, Wang Changzhi

2018, 39(2): 165-172. doi: 10.7513/j.issn.1004-7638.2018.02.028

Abstract(97) PDF(2)

Abstract:
The fracture behavior of large angle Q420 steel was studied by means of optical microscope,scanning electron microscope,mechanical property test and Charpy impact. The fracture behavior was analyzed mainly by metallographic structure,mechanical property,fracture analysis and inclusions analysis,in o...

2018 Vol. 39, No. 2