钢铁钒钛

Study of electronic structures and optical properties of N-doped anatase TiO₂

Yin Xianglu, Teng Aijun, Zeng Zehua, Zhang Dongbin, Dai Yu, Wu Wei

2022, 43(2): 1-6. doi: 10.7513/j.issn.1004-7638.2022.02.001

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Abstract:
By substituting N atoms for Ti or O atoms at different positions, three doped structures at different positions are constructed, i.e., O-Ti-N, Ti-O-N and N-Ti-N. Based on density functional theory and first-principles calculations, the effects of three kinds of nitrogen doping on the crystal structu...

Research progress in preparation of titanium dioxide catalyst carrier for denitrification

Li Huaquan, Qiu Guibao, Lv Xuewei

2022, 43(2): 7-14, 20. doi: 10.7513/j.issn.1004-7638.2022.02.002

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Abstract:
Titanium dioxide (TiO₂) has been widely used in SCR flue gas denitrification catalyst industry because of its excellent performance, and has become a hotspot of application research at home and abroad in recent years. We herein reviewed the technology research situation of titanium dioxide as denitr...

Study on the correlation between particle size and blue phase indicators of rutile titanium dioxide

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

2022, 43(2): 15-20. doi: 10.7513/j.issn.1004-7638.2022.02.003

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Abstract:
In this paper, different K₂O-P₂O₅-ZnO salt treatment formulas were used to treat meta-titanic acid, and eligible rutile titanium dioxide was obtained after calcination. SCX value as the blue phase indicators, Z-Ave value as the ZS90 mean particle size and SEM mean particle size were detected. The li...

Titanium flotation dynamics study for a beneficiation plant in Panxi

Tan Shiguo, Fan Xuesai, Jiang Rendong, Luo Rongfei

2022, 43(2): 21-24. doi: 10.7513/j.issn.1004-7638.2022.02.004

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Abstract:
The paper studies the dynamics characteristics of flotation cells for a beneficiation plant in Panxi. Based on the method of collecting air via draining water, the air flowrate is 0.16~0.51 m³/(m²·min) for rougher and scavenger. The air dispersion of direct flow cell is better than that of the pumpi...

Research progress on V₂O₅ extraction from vanadium-bearing shale

Kang Xuanxiong, Ye Guohua, Zhu Siqin, Liang Xueyin

2022, 43(2): 25-34. doi: 10.7513/j.issn.1004-7638.2022.02.005

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Abstract:
The main links of vanadium extraction from vanadium-bearing shale were introduced, including pre-enrichment, roasting, leaching, etc. The advantages and disadvantages of each step were analyzed and discussed. Pre-enrichment of vanadium-bearing shale can improve the grade of vanadium in the raw ore, ...

Study on viscosity characteristics of molten vanadium slag during iron-extracting reduction process

Wang Ning, Chen Min, Zhang Lingxi

2022, 43(2): 35-40. doi: 10.7513/j.issn.1004-7638.2022.02.006

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Abstract:
In this paper, the viscosity variation of the vanadium slag system in the iron-extracting reduction process from molten vanadium slag in cutting waste was studied, and the effect mechanism of structural units in the melt on macro-viscosity was revealed from the perspective of microstructure by study...

Anisotropy of tensile and low cycle fatigue properties of commercial pure titanium TA2

Liang Yuanchang, Chang Le, Zhou Changyu

2022, 43(2): 41-47. doi: 10.7513/j.issn.1004-7638.2022.02.007

Abstract(590) HTML (57) PDF(76)

Abstract:
To systematically study the anisotropy of tensile and low cycle fatigue properties of commercial pure titanium, tensile and low cycle fatigue tests at room temperature were carried out along the rolling direction (RD), 30° to RD (RD-30°), 60° to RD (RD-60°) and transverse direction (TD). With the in...

Molten salt assisted preparation of TiB₂ powder from Ti-Si-Fe and B

Cheng Dengfeng, Zhang Jinhua, Wang Jingran, Ke Changming

2022, 43(2): 48-55. doi: 10.7513/j.issn.1004-7638.2022.02.008

Abstract(330) HTML (46) PDF(27)

Abstract:
TiB₂ powders were synthesized in NaCl-KCl molten salt by amorphous boron and Ti-Si-Fe alloy extracted from high titanium blast furnace slag. The effects of reaction temperature, holding time, molten salt amount and mole ratio of B to Ti on the reaction process were investigated. The results show tha...

Preparation of graphene/TiO₂ composites and study on degradation of methyl blue

Gao Wei, Wang Jun, Li Yufeng, Tang Weiwei, Zhang Zhe

2022, 43(2): 56-61. doi: 10.7513/j.issn.1004-7638.2022.02.009

Abstract(219) HTML (49) PDF(15)

Abstract:
Photocatalytic degradation has become the fastest developing method in the field of wastewater treatment. GN/TiO₂ composites were prepared by sol-gel method in order to improve the photocatalytic performance of TiO₂ and the degradation effect of the composites on methyl blue was studied. The microst...

A study on fatigue damage behavior of single-wire MIG welding joint for TC4 titanium alloy

Zhang Long, Li Qingbo, Dai Yu, Chen Donggao, He Yifan

2022, 43(2): 62-67. doi: 10.7513/j.issn.1004-7638.2022.02.010

Abstract(230) HTML (34) PDF(38)

Abstract:
A single-wire MIG welding process was carried out to weld TC4 titanium alloy with a thickness of 15 mm. The base metal and welded joint microstructure, tensile, and fatigue properties were analyzed and tested. The results showed that the welded joints were divided into the base metal, heat-affected ...

Study on the optimized preparation of high-purity V₂O₅ nanowire nonwoven

Ni Wei, Peng Bijun

2022, 43(2): 68-72. doi: 10.7513/j.issn.1004-7638.2022.02.011

Abstract(296) HTML (48) PDF(31)

Abstract:
Aiming to solve the preparation problems of complex, high cost and low efficiency of the existing vanadium pentoxide (V₂O₅) nanomaterials, especially their nanowire nonwovens, herein a one-step hydrothermal method for efficient preparation of V₂O₅ nanowire nonwoven was provided and the relevant mech...

Progress of vanadium-based electrode materials in energy storage

Zhou Hua, Song Yongchang, Liu Jin, Hao Yanwei, Sun Ruimin, Zhou Yongheng, Zhang Yanshu

2022, 43(2): 73-80. doi: 10.7513/j.issn.1004-7638.2022.02.012

Abstract(700) HTML (79) PDF(78)

Abstract:
Electrode materials derived from vanadium possessing variable valence states, open structures and high theoretical capacities are considered as low-cost and high-performance energy storage materials with potential application in the fields of sodium-ion batteries, lithium-ions batteries and supercap...

Development and application instances of vacuum stirring evaporation technology of titanium tetrachloride slurry

Xu Weichun, Dai Yingjie, Wei Zhizhong, Wang Lijuan

2022, 43(2): 81-86. doi: 10.7513/j.issn.1004-7638.2022.02.013

Abstract(398) HTML (141) PDF(38)

Abstract:
In order to realize the efficient recovery and utilization of titanium tetrachloride and valuable metals in the slurry, a vacuum rotary evaporation experiment and vacuum stirring evaporation system for titanium tetrachloride slurry were designed. This paper, used the waste heat steam to heat the tit...

Investigating kinetics in preparation of precipitated silica from iron ore tailings

Zhang Peng, Chen Xingyue, Ren Zhifeng, Li Yihong, Zhao Aichun, He Yibo

2022, 43(2): 87-93. doi: 10.7513/j.issn.1004-7638.2022.02.014

Abstract(313) HTML (33) PDF(22)

Abstract:
Iron ore tailings (IOT), which are by-product of the ore-smelting process. It will be an inevitable trend to recycle them as a secondary resource due to the potential value of more than 100 billion yuan. Through the composition analysis of IOT from a steel plant in Hebei Province, the SiO₂ in IOT re...

Study on preparation of aerated concrete block from vanadium-titanium magnetite tailing

Ding Chunjiang, Zhang Kaifeng

2022, 43(2): 94-100. doi: 10.7513/j.issn.1004-7638.2022.02.015

Abstract(193) HTML (53) PDF(24)

Abstract:
The aerated concrete block was prepared with the tailings as the main raw material by autoclave-free method. The influence of formula composition on dry density and compressive strength was studied. The results showed that the compressive strength increased first and then decreased, while the dry de...

Experimental study on the prediction model of carbonization depth in high Ti-bearing blast furnace slag concrete

Wang Jie, Li Gen, Liang Yuehua, Gan Bin, Zhao Yi

2022, 43(2): 101-106. doi: 10.7513/j.issn.1004-7638.2022.02.016

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Abstract:
Reinforcement corrosion caused by concrete carbonation is the main reason of durability failure of concrete structures. In order to study the carbonation resistance of Panzhihua high-titanium blast furnace slag concrete, we herein carried out the indoor accelerated carbonation test of high-titanium ...

Study on phase and chemical composition of V-Ti sinter during softening, melting and dripping process

Xie Hong’en, Hu Peng, Zheng Kui, Zhu Fengxiang

2022, 43(2): 107-117. doi: 10.7513/j.issn.1004-7638.2022.02.017

Abstract(278) HTML (118) PDF(47)

Abstract:
The charging mode of vanadium-bearing titanomagnetite concentrate is an important matter for optimizing the burden structure of blast furnace in Pangang, which also has an important influence on the migration of V and Ti in the process of softening and melting process and the formation of Ti(C,N). A...

Effect of TiO₂ on physicochemical properties and structure of high-alumina blast furnace slag

Yan Hua, Liu Huajun, Chen Buxin, Hu Meilong

2022, 43(2): 118-124. doi: 10.7513/j.issn.1004-7638.2022.02.018

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Abstract:
With the increase of the high-alumina raw materials with high economy in blast furnace (BF) of domestic iron and steel enterprises, the content of Al₂O₃ in slag increases and the fluidity of the slag iron becomes worse, which brings a series of problems to BF smelting. Taking five-component CaO-SiO₂...

Effect of vanadium content on microstructure and precipitation of rare earth treated X80 linepipe steels

Wang Shudan, Song Bo, Mao Jinghong

2022, 43(2): 125-132, 177. doi: 10.7513/j.issn.1004-7638.2022.02.019

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Abstract:
In order to improve the corrosion resistance of X80 linepipe steel, different vanadium content (0.05%, 0.10% and 0.15%) was added into a rare earth (0.02%) treated X80 linepipe steel. Optical microscope (OM), cold field emission scanning electron microscope, thermodynamic software Thermo-CalC, trans...

Effect of bottom blowing argon flow on temperature and solidification of molten metal during casting

Gen Yunfei, Zhong Liangcai, Yang Xiaomeng, Yang Shicun, Zhang Ling, He Longlong

2022, 43(2): 133-139. doi: 10.7513/j.issn.1004-7638.2022.02.020

Abstract(335) HTML (46) PDF(39)

Abstract:
The low melting point Pb₁₈Sn₁₂In₂₁Bi₄₉ alloy (mass fraction) in a stainless steel ingot mold during casting with bottom argon blowing was used to investigate the effects of bottom argon blowing on the temperature of the molten alloy and the microstructure of the solidified phase during casting by me...

Effect of Na₂O on the enrichment behavior of phosphorus in the slag system CaO-SiO₂-Fe₂O₃-P₂O₅

He Sai, Liu Yaqin, Lin Lu, Hou Zhongxiao, Huang Fang, Hu Yanbin

2022, 43(2): 140-145. doi: 10.7513/j.issn.1004-7638.2022.02.021

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Abstract:
In this paper, the effects of Na₂O in slag on the existing forms, the law of phase precipitation and the phosphorus enrichment behavior of phosphorus-containing slag are systematically studied by high-temperature experiments in MoSi₂ furnace and analyzed by FactSage, SEM and XRD. The research result...

Research on IAF nucleation behavior induced by Ce/Ce-Zr inclusion in high strength steel plate for shipbuilding

Meng Xianghai, Wang Wei, Bi Sheng, Li Yungang

2022, 43(2): 146-151. doi: 10.7513/j.issn.1004-7638.2022.02.022

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Abstract:
In this paper, the evolution behavior of ferrite induced by inclusions in FH40 ship plate steel after rare earth alloying was studied. The morphology characteristics of rare earth inclusions formed in steel and the mechanism of IAF formation were observed and analyzed by means of scanning electron m...

Effect of holding time on solid solution behavior of inhibitors in rare earth oriented silicon steel during reheating

Han Qiang, Yang Lilin, Li Tao, Sun Mingshuang, Fan Jing, Guo Xiaoyu

2022, 43(2): 152-156. doi: 10.7513/j.issn.1004-7638.2022.02.023

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Abstract:
In this paper the solid solution behavior of the inhibitor under various holding time in 0.001 1 % La oriented silicon steel during reheating had been investigated by using OM, LM, methods of electrolytic extraction and mass spectrometer. The results showed that grain size of the test steel increase...

Effect of different amounts of oil on electrochemical corrosion behavior of DC06 automobile steel

Zheng Haoqing, Zheng Zhiwang, Zuo Jun, Su Guanqiao

2022, 43(2): 157-162. doi: 10.7513/j.issn.1004-7638.2022.02.024

Abstract(206) HTML (74) PDF(20)

Abstract:
The electrochemical corrosion behavior of DC06 steel plate under different temperatures and oil content was studied by constant temperature and humidity, electrochemical polarization curve and local electrochemical impedance tests. The experimental results showed that the corrosion rate of the DC06 ...

Effect of heating rate on austenitization of as-cast 60Si2Mn steel

Wang Ruizhang, Zhou Denghu, Jiang Yan, Yang Kai, Xi Bo, Liao Zhencheng, Huang Zhenyi

2022, 43(2): 163-171. doi: 10.7513/j.issn.1004-7638.2022.02.025

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Abstract:
The linear expansion coefficient of as-cast 60Si2Mn steel at different heating rates (0.2, 1, 3, 10, 50 ℃/s) was recorded using the thermal dilatometer DIL805A. The corresponding thermal expansion curves and volume transformation fraction curves (austenite) were obtained to study the effect of heati...

The effect of annealing process on the microstructures and properties of 2 000 MPa cold-drawn steel wire

Su Hongyan

2022, 43(2): 172-177. doi: 10.7513/j.issn.1004-7638.2022.02.026

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Abstract:
Annealing was used to simulate the galvanizing process of a kind of cold drawn steel wire, and the changes in the structure and properties of the cold drawn steel wire during the galvanizing process were studied utilizing a scanning electron microscope, transmission electron microscope, combined wit...

Study on dynamic mechanical properties and constitutive model of 022Cr18Ni14Mo2 stainless steel under impact load

Jia Haishen, Luo Wencui, Zhang Jilin, Yi Xiangbin

2022, 43(2): 178-185. doi: 10.7513/j.issn.1004-7638.2022.02.027

Abstract(374) HTML (50) PDF(30)

Abstract:
The quasi-static and dynamic compression tests of 022Cr18Ni14Mo2 stainless steel were performed by using UTM5305 universal testing machine and split Hopkinson compression bar. The strain hardening characteristics and the dependence of flow stress on strain rate were discussed. The quantitative analy...

Study on microstructure and properties of high aluminum dual phase steel 980DH with high formability

Zhou Li, Xue Renjie, Cao Xiao’en, Dong Mengyao

2022, 43(2): 186-191. doi: 10.7513/j.issn.1004-7638.2022.02.028

Abstract(452) HTML (113) PDF(32)

Abstract:
The influence of static continuous cooling transformation and continuous annealing process on the structure and properties of cold-rolled plates for high aluminum dual phase steel 980DH with high formability were studied by phase transformation quenching dilatometer, continuous annealing simulation ...

Analysis of Chinese standard GB/T 3620.1—2016: Designation and composition of titanium and titanium alloys

Feng Junning, Xie Chen, Ma Zhongxian, Hu Zhijie, Wei Jiaqi, Feng Yongqi

2022, 43(2): 192-196. doi: 10.7513/j.issn.1004-7638.2022.02.029

Abstract(3210) HTML (401) PDF(237)

Abstract:
This article mainly introduces the historical evolution, the reason, basis, and content of the revision of the new Chinese standard GB/T 3620.1—2016, as well as the relationship between industrial pure titanium designations and material standards. Finally, it expounds the problems that are easy to a...

2022 Vol. 43, No. 2