钢铁钒钛

Global vanadium industry development report 2021

Wu You, Chen Donghui, Liu Wuhan, Sun Zhaohui, Zhang Bangxu, He Rui

2022, 43(5): 1-9. doi: 10.7513/j.issn.1004-7638.2022.05.001

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Abstract:
The overall situation of the global vanadium industry was elaborated and analyzed from the global vanadium resources and the production capacity, the output, supply and demand, import and export, as well as the market prices in 2021. The major events in the global vanadium battery field are also int...

Research progress on purification and enrichment of vanadium-bearing acid leaching solution

Zhu Siqin, Ye Guohua, Kang Xuanxiong, Liang Xueyin

2022, 43(5): 10-22. doi: 10.7513/j.issn.1004-7638.2022.05.002

Abstract(745) HTML (276) PDF(74)

Abstract:
On the basis of analyzing the characteristics of vanadium-bearing acid leaching solution, the study development of purification and enrichment of this solution was reviewed. The most attention has been paid to solvent extraction and ion exchange presently. Herein, acidic phosphorus extractants have ...

Study on preparation of high-quality ultrafine TiB₂ powder by short process melting method

Li Wenjing, Li Defu, Xin Yanan, Tang Min

2022, 43(5): 23-29. doi: 10.7513/j.issn.1004-7638.2022.05.003

Abstract(253) HTML (111) PDF(54)

Abstract:
Based on research background and market competitive advantage of the enterprise production, a method of preparing high-quality ultrafine TiB₂ powder with short process by melting method was proposed in this paper. This method is high yield, short production cycle and no environmental pollution, by w...

Study on enrichment of titanium resources by treating titanium middling ore with KOH sub molten salt

Zou Min, Wang Qilin, Jiang Wenshi

2022, 43(5): 30-34, 44. doi: 10.7513/j.issn.1004-7638.2022.05.004

Abstract(244) HTML (51) PDF(39)

Abstract:
The treatment of titanium middling ore with KOH sub molten salt was studied to realize the enrichment of titanium resources. The effects of reaction temperature, reaction time, alkali concentration and particle size on the decomposition of titanium middling ore were investigated, and the phase of th...

Study on the effect of addition of zinc-based salt treatment agent on the performance of TiO₂

Wu Jianchun, Lu Ruifang, Sun Qiang, Shi Ruicheng, Liu Chan

2022, 43(5): 35-39. doi: 10.7513/j.issn.1004-7638.2022.05.005

Abstract(278) HTML (70) PDF(31)

Abstract:
Using metatitanic acid as a raw material, adding different proportions of salt treatment agents to metatitanic acid, and adjusting the calcination temperature to prepare TiO₂ with a rutile content of 98% to 99%. The influence of K₂O, P₂O₅, ZnO addition on the calcination temperature and the properti...

Study on impurity removal process of titanium tetrachloride produced by boiling chlorination

Dai Yingjie, Wei Zhizhong, Wang Lijuan, Duo Yunxia, Li Yajun

2022, 43(5): 40-44. doi: 10.7513/j.issn.1004-7638.2022.05.006

Abstract(378) HTML (58) PDF(42)

Abstract:
Boiling chlorination has become the mainstream production method of tetrachloride production due to its advantages of high production efficiency, low cost, little environmental pollution and high automation. Combined with the research practice in Sunrui Wanji titanium industry company, this paper ma...

Regulation on electronic structure of VN-based materials for enhanced supercapacitor performances

Zhang Dongbin, Chang Zhi, Teng Aijun, Liu Tianhao, Dai Yu, Peng Xianzhu, Du Guangchao, Kang Ju

2022, 43(5): 45-51. doi: 10.7513/j.issn.1004-7638.2022.05.007

Abstract(503) HTML (61) PDF(84)

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In this paper, a method to improve the electrochemical performances of VN-based materials by electronic structure regulation is proposed. By Fe doping, the electronic structure of VN-based materials was modified for better electrochemical performances. XRD, HRTEM, XPS and other methods were used to ...

Investigation of the effect of Ce on the K resistance of V-Mo/Ti de-NO_x catalyst

Huang Li, Yue Yanwei, Zong Yuhao, Wang Hu, Li Jinke, Gao Yibo, Han Pei

2022, 43(5): 52-58. doi: 10.7513/j.issn.1004-7638.2022.05.008

Abstract(201) HTML (79) PDF(27)

Abstract:
Industrial V-Mo/Ti catalyst for denitrification was modified by Ce in order to enhance its resistance to K. XRD, SEM, N₂-adsorption/desorption, H₂-TPR, XPS, NH₃-TPD, and NH₃-DRIFTS analyses were used to characterize the physiochemical properties of the different catalysts. Subsequently, the influenc...

Phase transformation kinetics of high Nb-TiAl alloy during isothermal treatments

Li Ying, Tian Shuxia, Fan Jianglei, Wang Yan, Liu Jianxiu

2022, 43(5): 59-64. doi: 10.7513/j.issn.1004-7638.2022.05.009

Abstract(307) PDF(50)

Abstract:
The isothermal phase transformation kinetics of α₂→α at the temperature 1140−1200 ℃ in high Nb-TiAl alloy were systematically studied by in-situ thermal expansion method. The results show that during the α₂→α isothermal phase transformation of high Nb-TiAl alloy, the “nose tip” temperature of α₂→α p...

Recent progress on V₂O₅ nanowire nonwovens preparation and application in advanced electrochemical energy storage devices

Ni Wei, Qi Jianling, Fan Heyun

2022, 43(5): 65-74. doi: 10.7513/j.issn.1004-7638.2022.05.010

Abstract(354) HTML (84) PDF(34)

Abstract:
As an important V-based functional material, vanadium pentoxide (V₂O₅) nanofiber has a significant application in the field of electrochemical energy storage. We herein gave an overview of the one-dimensional (1D) V₂O₅-based materials for the application of advanced electrochemical energy storage an...

Study on microstructure and properties of TiC-based high manganese steel bonded cemented carbide prepared by spark plasma sintering

Zhang Huaiju, Wang Shuai, Zheng Kaihong, Luo Tiegang

2022, 43(5): 75-80. doi: 10.7513/j.issn.1004-7638.2022.05.011

Abstract(363) HTML (131) PDF(29)

Abstract:
Cemented carbides with different TiC mass fractions were prepared by spark plasma sintering (SPS) to reveal the influence mechanism of microstructure on hardness and wear behavior, and to explore the possibility of cemented carbides with high TiC mass fraction as wear-resistant materials. The result...

Tensile mechanical properties and constitutive model of commercial pure titanium TA2 welded joints at medium-low temperature

Zhao Qing, Chang Le, Zheng Yixiang, Song Gaofeng, Ye Youjun, Xie Yi, Tan Xuelong

2022, 43(5): 81-89. doi: 10.7513/j.issn.1004-7638.2022.05.012

Abstract(318) HTML (51) PDF(63)

Abstract:
In this paper, tensile tests of commercial pure titanium TA2 welded joints at different temperatures and strain rates were carried out to analyze the effects of temperature and strain rate on the flow stress and strength of the material. The yield strength of TA2 welded joints present a linear relat...

Research progress on Ti/Al clads by rolling

Pang Lijuan, Li Huirong, Deng Gang, Zhang Xuefeng

2022, 43(5): 90-98. doi: 10.7513/j.issn.1004-7638.2022.05.013

Abstract(773) HTML (269) PDF(100)

Abstract:
Ti/Al clad plates combine the advantages of titanium and aluminum and have been widely used in various industrial fields. Rolling technique has been well established for processing Ti/Al clad plate. The basic theory involved in rolling technique and the factors affecting the interface bonding streng...

Effect of Al content on fracture behavior of γ-TiAl alloy

Liang Yuehui, Qi Wenjun

2022, 43(5): 99-105. doi: 10.7513/j.issn.1004-7638.2022.05.014

Abstract(282) HTML (91) PDF(30)

Abstract:
The crack growth mechanism and mechanical properties of single crystal γ-TiAl alloy with 45%～49% Al under uniaxial tension at 300 K had been investigated be means of molecular dynamics. The crack development of γ-TiAl alloy with 45% Al content during tensile process and the stress-strain curve and t...

Study on the transformation mechanism of chromium in chromium sludge under reducing atmosphere

Wan Xinyu, Gao Jianjun, Cao Zhicheng, Wu Peipei, Xu Haichuan

2022, 43(5): 106-110, 122. doi: 10.7513/j.issn.1004-7638.2022.05.015

Abstract(280) HTML (57) PDF(29)

Abstract:
In this paper, the transformation mechanism of chromium in chromium sludge was studied under reducing atmosphere, and the feasibility of rotary hearth furnace (RHF) for treating chromium sludge was discussed. The results show that chromium mainly exists in the form of chromium hydroxide, calcium chr...

Research on adsorption properties of vanadium in vanadium-containing waste liquid by diatomite

Sun Ning, Li Junhan

2022, 43(5): 111-116. doi: 10.7513/j.issn.1004-7638.2022.05.016

Abstract(294) HTML (49) PDF(24)

Abstract:
A large amount of vanadium containing wastewater is produced in the wet process of vanadium extraction, and its direct discharge causes serious environmental pollution and resource waste. Due to the advantages of large specific surface area, many pores, low density, strong adsorption performance and...

Research and practice on optimization of grinding and classification process of low-grade vanadium titanomagnetite

Wu Dengping, Wang Xiangbo, Zhao Liuyang

2022, 43(5): 117-122. doi: 10.7513/j.issn.1004-7638.2022.05.017

Abstract(268) HTML (64) PDF(35)

Abstract:
According to the production status of Panzhihua Fengyuan Mining Co., Ltd. using the low-grade vanadium titanomagnetite for beneficiation from Panzhihua mining area, this paper put forward an optimization scheme of grinding and classification process. Under the condition of improving the fineness of ...

Study on the effect of electric furnace steel slag-fly ash compound admixture on the properties of cement mortar

Wang Jie, Liang Yuehua

2022, 43(5): 123-128. doi: 10.7513/j.issn.1004-7638.2022.05.018

Abstract(256) HTML (48) PDF(22)

Abstract:
The electric furnace steel slag ball produced by Ruisteel Company of Panzhihua Steel City Group was used to grind into micropowder, and the composite fly ash was used to prepare the electric furnace steel slag–fly ash composite admixture. The fluidity, 7 d and 28 d bending, compressive strength and ...

Simulation study on the eccentric stirring of hot metal desulfurization

Yu Qingchun, Liu Zhiping, Yin Shubiao, Zhang Songlai

2022, 43(5): 129-135. doi: 10.7513/j.issn.1004-7638.2022.05.019

Abstract(284) HTML (90) PDF(42)

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Based on the actual size of molten iron tank, a physical model was proportionally established to simulate the eccentric stirring desulfurization using KR method. Numerical simulation was made to simulate the desulfurization process of hot metal with eccentric stirring by VOF multiphase flow model, s...

Bottom tuyere configuration optimization in 120 t combination blown converter

Zhang Ling, Yu Bo, Zhong Liangcai, Wang Lixin, He Longlong, Weng Li, Li Qiang

2022, 43(5): 136-144. doi: 10.7513/j.issn.1004-7638.2022.05.020

Abstract(227) HTML (73) PDF(22)

Abstract:
Physical experiment in a model with a geometric similarity ratio of 1:10 for a 120 t top-bottom combined blown converter based on the similarity theory was conducted in laboratory. The effect of bottom gas flowrate, number and arrangement of bottom tuyeres on the bath mixing was studied. A mathemati...

Study on the microstructure evolution during hot deformation of GH5188 superalloy

Guo Xulong, Jiang Shichuan

2022, 43(5): 145-152. doi: 10.7513/j.issn.1004-7638.2022.05.021

Abstract(464) HTML (131) PDF(34)

Abstract:
In this paper, the transformation law of microstructure evolution during multi-pass deformation and heat preservation was investigated by a Gleeble-3800 thermal simulation testing machine. A hot working diagram was established at deformation rate 0.01−10 s⁻¹, deformation amount 50%, and deformation ...

Effect of electroplating time and temperature on hydrogen diffusion coefficient of U78CrV steel

Feng Kai, Li Ying, Zou Ming, Yuan Jun, Ding Yushi

2022, 43(5): 153-157. doi: 10.7513/j.issn.1004-7638.2022.05.022

Abstract(190) HTML (99) PDF(28)

Abstract:
Hydrogen can cause hydrogen embrittlement of steel, resulting in a decrease in the material's mechanical properties. The harmful effect of hydrogen atoms on steel is caused by diffusion. Therefore, understanding the diffusion behavior of hydrogen atoms in steel is significant in preventing hydrogen ...

Effect of heat treatment on mechanical and corrosion resistance properties of Fe-25Mn-18Cr-3.5Ni-2Al stainless steel

Zeng Zeyao

2022, 43(5): 158-165. doi: 10.7513/j.issn.1004-7638.2022.05.023

Abstract(219) HTML (108) PDF(22)

Abstract:
The properties of Fe-25Mn-18Cr-3.5Ni-2Al test steel under different heat treatment processes were tested by tensile, impact, and electrochemical methods. The SEM, EBSD, and XRD analysis showed that the volume fraction of the austenite phase decreased gradually with the increase of solid solution tem...

Ferrite grain size control of dual phase steel and its effect on mechanical properties and hydrogen diffusion properties

Ye Qing

2022, 43(5): 166-170. doi: 10.7513/j.issn.1004-7638.2022.05.024

Abstract(446) HTML (127) PDF(34)

Abstract:
Three different ferrite grain-sized ferrite-martensite dual-phase steels were prepared by large-strain warm deformation at different deformation temperatures in a thermal simulation process, followed by intercritical annealing at 920 ℃ for 3 min in this study. The dimensions were 11.6, 2.3 μm, and 1...

Microstructure and mechanical properties of Ni₃Al based intermetallic designed based on 'cluster plus connected atom' model

Liu Lin, Xu Yanan, Tian Quanwei, Teng Zongyan, Xu Zhaohui, Wang Yinong

2022, 43(5): 171-177. doi: 10.7513/j.issn.1004-7638.2022.05.025

Abstract(211) HTML (55) PDF(22)

Abstract:
The room temperature brittleness of Ni₃Al intermetallic compounds significantly limits its application. Accordingly, in this paper, the composition and structure of Ni₃Al intermetallic compounds are analyzed, and the composition is designed by the 'cluster plus connected atom' model. Six alloys were...

Effects of strain aging on the microstructure and properties of X90 high-strength pipeline steel

Yang Jun, Bi Zongyue, Wang Xueyi, Niu Hui

2022, 43(5): 178-185. doi: 10.7513/j.issn.1004-7638.2022.05.026

Abstract(232) HTML (54) PDF(10)

Abstract:
X90 pipeline steel pipe is a new type of high-strength and high-toughness pipe. With the increase in strength, the revealing and controlling of strain aging behavior of X90 pipeline steel has become the focus of research. The microstructure characteristics, fracture morphology, strain-aging sensitiv...

Research on hot deformation behavior of MnS inclusions in gear steel

Sun Yaping, Yang Li, Li Yongliang, Yang Yuhou

2022, 43(5): 186-190. doi: 10.7513/j.issn.1004-7638.2022.05.027

Abstract(272) HTML (50) PDF(20)

Abstract:
A compression test was conducted via a Gleeble-1500 thermo-mechanical simulator. The effects of different deformation temperatures and deformation on the size and relative plasticity of MnS inclusions in steel were studied. It is found that fragmentation and growth of MnS occurred alternately during...

The study of the role of Mg content in microstructure of Zn-1.6Al-xMg alloy coatings

Jin Yongqing, Guo Taixiong, Dong Xueqiang, Deng Han

2022, 43(5): 191-196. doi: 10.7513/j.issn.1004-7638.2022.05.028

Abstract(297) HTML (90) PDF(42)

Abstract:
The Zn-1.6Al-xMg alloy coating steel sheets with different Mg content were prepared by hot dip galvanizing simulator, and the microstructure of coatings was analyzed using XRD, SEM and EDS. The results indicate that all the microstructures of Zn-1.6Al-xMg coatings are composed of massive Zn-rich pha...

Industrial study on modification of sulfide in Y1Cr13free-cutting stainless steel by tellurium

Wu Liangping, Fu Zhenggang, Zhou Maohua, Wang Jianqiang, Xie Jianbo, Fu Jianxun

2022, 43(5): 197-204. doi: 10.7513/j.issn.1004-7638.2022.05.029

Abstract(383) HTML (72) PDF(158)

Abstract:
The effect of sulfide modification by Te was analyzed and compared by means of metallographic microscopy, scanning electron microscope and Image-Pro Plus image analysis software. The results show that MnTe inclusions precipitated around the MnS inclusions when 0.011% Te added to the steel, resulting...

2022 Vol. 43, No. 5