钢铁钒钛

Current Situation and Development Prospect of Preparation Technologies for Spherical Titanium and Titanium Alloy Powder

Liao Xianjie, Lai Qi, Zhang Shuli

2017, 38(5): 1-8. doi: 10.7513/j.issn.1004-7638.2017.05.001

Abstract(430) PDF(18)

Abstract:
Preparation technologies of spherical titanium and titanium alloy powder,including traditional gas atomization （GA）,ultrasonic atomization,rotating electrode centrifugal atomization （REP）,plasma rotating electrode process （PREP）,plasma atomization （PA）,RF plasma torch atomization （TEKNA）and newly-in...

Experimental Study on the Flotation of Gabbro Ilmenite with a Novel Collector

Zheng Yu, Wang Weiqing, Cong Jinyao, Wang Hongbin, Cui Yating

2017, 38(5): 9-14. doi: 10.7513/j.issn.1004-7638.2017.05.002

Abstract(73) PDF(2)

Abstract:
The flotation of a gabbro ilmenite from Panxi area using a novel collector SF was investigated.The effects of collector dosage,p H regulator dosage,depressants types and dosage on separation of ilmenite and gangue minerals were studied.Furthermore,the open and closed circuit experiments for ilmenite...

Vanadium Extraction from Vanadium-chromium Solution by Hydrothermal-hydrolysis Precipitation

Gao Guanjin

2017, 38(5): 15-19. doi: 10.7513/j.issn.1004-7638.2017.05.003

Abstract(53) PDF(4)

Abstract:
Efficient extraction and separation of vanadium from vanadium solution containing high concentration of chromium and sodium was investigated by hydrothermal-hydrolysis method to solve the treatment difficulties of wastewater with high concentration of Na⁺ and NH₄⁺ produced in traditional vanadium pr...

Research on Dissolution of Vanadium in Acid Leaching Process of Calcified Roasting Clinker of Vanadium Slag

Ye Lu

2017, 38(5): 20-25. doi: 10.7513/j.issn.1004-7638.2017.05.004

Abstract(84) PDF(4)

Abstract:
Using the calcified roasting clinker of vanadium slag from a certain company as raw materials,sulfuric acid leaching experiments were carried out to investigate the influences of p H,temperature and time,liquid-solid ratio and stirring rate of leaching process on extraction rate of vanadium.The occu...

Study on Reducing Soluble Vanadium Content in the Residue after Sulfuric Acid Leaching of Vanadium Slag Roasted with Calcium Oxide

Wang Chunqiong, Yang Bing, Liu Xuezhi, Xiong Kaiwei, Yan Yong, Sun Yuzhong

2017, 38(5): 26-30. doi: 10.7513/j.issn.1004-7638.2017.05.005

Abstract(64) PDF(1)

Abstract:
Effects of liquid-solid ratio and time of leaching,residence time of slurry,washing times,elution water volume and filtration rate on the soluble vanadium （SV） content of the residue after acid-leaching of vanadium slag roasted with calcium oxide in the industrial production of vanadium oxides were ...

Semi-quantitative Analysis of Phase Conversion of Vanadium Slag in Sodium Calcination Process

Wang Minghua, Zhao Hui, Liu Yan, Kong Chuiyu, Liu Zhenhui, Lou Taiping, Sun Zhaohui, Jing Han, Tang Hongjian, Yu Bin

2017, 38(5): 31-36. doi: 10.7513/j.issn.1004-7638.2017.05.006

Abstract(78) PDF(2)

Abstract:
Using sodium carbonate as additive,experimental studies of oxidation roasting of vanadium slag were conducted.The content of sodium vanadate was detected through XRD semi quantitative method and the factors influencing the formation of sodium vanadate were investigated.The phase transitions and thei...

Study on Carbon Content Control for FeV80 Alloy

Yu Bin, Sun Zhaohui, Pan Cheng, Chen Haijun, Tang Hongjian

2017, 38(5): 37-41. doi: 10.7513/j.issn.1004.7638.2017.05.007

Abstract(125) PDF(1)

Abstract:
The occurrence states and decarburization thermodynamic conditions of carbon in FeV80 alloy were analyzed,and the effects of carbon content of lime,C/V ratio,conduction time and content of decarbonizer on vanadium content in slag and carbon content in alloy were tested.Theoretical analysis results s...

Preparation of AlV55 Alloy by Aluminothermic Reduction

Yin Danfeng, Sun Zhaohui, Chen Haijun, Wang Yonggang, Du Guangchao

2017, 38(5): 42-45. doi: 10.7513/j.issn.1004.7638.2017.05.008

Abstract(138) PDF(4)

Abstract:
The thermodynamics for preparation of AlV55 by aluminothermic process was analyzed by Fact Sage software and differential thermal analyzer.The results show that the reaction occurs spontaneously with 3 276.61 K of adiabatic combustion temperature and 4 567.06 J·g^-1 of unit thermal effect,attributed ...

Theoretical and Experimental Research on Preparation of Ti-Al Alloy by Electric Aluminothermic Reduction

Li Jun, Lu Xionggang, Yang Shaoli, Wu Enhui, Hou Jing, Li Chonghe, Lai Qi, Ma Lan

2017, 38(5): 46-52. doi: 10.7513/j.issn.1004-7638.2017.05.009

Abstract(89) PDF(2)

Abstract:
Ti-Al alloy was prepared using electric aluminothermic reduction method with titanium white as raw materials.The influence of temperature and aluminum addition on the alloy-slag separation,phase of slag,microstructure,composition and phase of alloy were researched.Through theoretical analysis it sho...

Preparation of Nano-titanium Dioxide/Graphene Composites and the Enhanced Photocatalytic Performance

Luo Jinhua

2017, 38(5): 53-59. doi: 10.7513/j.issn.1004-7638.2017.05.010

Abstract(70) PDF(2)

Abstract:
Nano-titanium dioxide/graphene composites were prepared by a facile hydrothermal method for the enhanced photocatalytic applications.The samples were characterized and analyzed by means of XRD,UV-Vis SEM and EDS.With methylene blue （MB） as the target degradation material,the photocatalytic effect of...

Effect of Preparation Method on the Electrochemical Performances of Vanadium-titanium Hydrogen Storage Alloy

Wang Yanli

2017, 38(5): 60-63. doi: 10.7513/j.issn.1004-7638.2017.05.011

Abstract(81) PDF(2)

Abstract:
For improving the electrochemical performances of vanadium-titanium hydrogen storage alloy,vanadium-titanium hydrogen storage alloys were prepared by various casting processes,and the electrochemical corrosion resistance and electrochemical cycling stability were tested and analyzed. The results sho...

Microstructure of （TiB+TiC）/TC18 Titanium Matrix Composite Undergoing Heat Treatment

Tang Menghan, Lu Jie, Chu Shiyi, Sun Shuyu

2017, 38(5): 64-67,72. doi: 10.7513/j.issn.1004.7638.2017.05.012

Abstract(121) PDF(4)

Abstract:
Three kinds of Ti-5Al-5Mo-5V-1Fe-1Cr titanium matrix composites reinforced with trace amount of TiB and TiC were fabricated via a consumable vacuum arc-remelting furnace in this work.The reinforcements were produced during solidification by the chemical reactions between B₄C and Ti.The mass fraction...

Effect of Coating Preparation Process on Properties of Vanadium-titanium Modified Cold Working Die Steel

Wang Xiaofeng, Zhao Ruishan

2017, 38(5): 68-72. doi: 10.7513/j.issn.1004-7638.2017.05.013

Abstract(43) PDF(1)

Abstract:
The vanadium-titanium modified cold working die steels were surface treated by various coating preparation processes.The wear resistance at room temperature of 25 ℃ and high temperature of 300 ℃,and impact property at room temperature of 25 ℃ were tested and analyzed. The results show that when the ...

Analysis of Factors Affecting the Production of PAHs in Coking Process

Gao Jianxin, Shi Yan, Zhao Xin, Song Jinying

2017, 38(5): 73-77. doi: 10.7513/j.issn.1004-7638.2017.05.014

Abstract(58) PDF(1)

Abstract:
In this study simulation preparation of coke had been performed in a laboratory oven with single coal,and coal blending as raw material,respectively,and then collect and detect PAHs produced during the coking process,in order to investigate the effects of coking temperature,coking process and coal a...

Research on the Molding of Sulfur Cobalt Concentrate Pellets Containing Carbon

Li Junhan

2017, 38(5): 78-83. doi: 10.7513/j.issn.1004-7638.2017.05.015

Abstract(51) PDF(1)

Abstract:
Using Panzhihua sulfur cobalt concentrate as raw materials and polyvinyl alcohol as binding agent,the influences of moisture content,molding pressure,particle size of sulfur cobalt concentrate and content of binding agent on the compression strength and drop strength of the sulfur cobalt concentrate...

Properties of BOF dust and its effect on combustion of pulverized coal

Wu Hao, Zou Chong, Zhao Junxue, Li Xiaoming

2017, 38(5): 84-89. doi: 10.7513/j.issn.1004-7638.2017.05.016

Abstract(120) PDF(2)

Abstract:
The physical and chemical properties of four kinds of BOF dust and their effects on the combustion performance of pulverized coal were studied by using a variety of detection methods. The results show that there are Fe₃O₄,Fe₂O₃,CaO and CaCO₃ in the phase composition,and the microstructures of the sa...

Optimal Matching of Thermodynamics Behavior of Iron Tailings during BF molten slag conditioning Process

Xing Hongwei, Liu Zhenchao, Liang Wei, Zhang Yuzhu, Ren Chengran, Zhang Huiqi

2017, 38(5): 90-95,100. doi: 10.7513/j.issn.1004-7638.2017.05.017

Abstract(77) PDF(2)

Abstract:
In order to study and optimize the matching relationship between different iron tailings and blast furnace slag during conditioning process,the effect of iron tailings in different proportions on the thermodynamic system of blast furnace slag had been predicated by using the software Fact Sage 7.0 b...

Determination of Titanium Content in Ferrosilicon Nitride by Diantipyrylmethane Spectrophotometry

Li Jie, Yu Lujun, Zhang Suizhong

2017, 38(5): 96-100. doi: 10.7513/j.issn.1004-7638.2017.05.018

Abstract(56) PDF(1)

Abstract:
A method for determination of titanium content in ferrosilicon nitride by diantipyrylmethane（DAPM） spectrophotometry was investigated.Some condition experiments were done,which includes decomposition of samples,smoking of sulfuric acid,coloring,interference and eliminating method,and the optimal con...

Research on Smelting-separation for Metallized Pellets of Vanadium-titanium Magnetite

Hong Lukuo, Qi Yuanhong, Sun Caijiao, Li Mingduo, Gao Jianjun, Wu Bingqiang

2017, 38(5): 101-107. doi: 10.7513/j.issn.1004-7638.2017.05.019

Abstract(110) PDF(5)

Abstract:
The smelting-separation process for metallized pellets of vanadium-titanium magnetite was studied in the lab.The ternary phase diagram of slag was calculated under various basicity by using Factsage software and the influences of smelting temperature,smelting time and the basicity of the metallized ...

Research on Compressive Strength Changes and Mechanism of Magnesium Flux Pellets

Wang Liguang, Cai Shuang, Tian Tielei

2017, 38(5): 108-111. doi: 10.7513/j.issn.1004-7638.2017.05.020

Abstract(94) PDF(1)

Abstract:
The effect of basicity on the compressive strength of the magnesium flux pellets was studied,and based on the pore structure and microscopic morphology,the reasons for the changing the compressive strength were analyzes. The relationship between the porosity and compressive strength were established...

Feasibility Analysis of Simultaneous Dephosphorization and Vanadium Extraction by Converter

Chen Lian

2017, 38(5): 112-117. doi: 10.7513/j.issn.1004.7638.2017.05.021

Abstract(58) PDF(4)

Abstract:
The thermodynamic calculations of element-oxidation in the process of vanadium extraction in converter had been done.The calculated results indicatethat the slag containing calcium can keep P₂O₅ in the slag.The molecular-ion model was established for high calcium vanadium slag system,and the calcula...

Location Method for Relevant Production Process Parameters of Continuous Casting Slab Quality

Cong Junqiang, Xu Xuehua, Peng Shiheng, Mi Jinzhou, Zhang Xingzhong

2017, 38(5): 118-122. doi: 10.7513/j.issn.1004-7638.2017.05.022

Abstract(167) PDF(4)

Abstract:
Real time collection and precise location for production process parameters of continuous casting slab is the basis for the online determination of continuous casting slab quality and the online optimization of production process parameters.On the basis of the actual production experience,a new loca...

Study on Dephosphorization Technology In Converter with High Scrap Ratio

Zhou Chaogang, Wang Shuhuan, Wang Wenhui, Ai Liqun, Zhao Dingguo, Xue Yuekai, Hao Huaqiang

2017, 38(5): 123-128. doi: 10.7513/j.issn.1004-7638.2017.05.023

Abstract(71) PDF(1)

Abstract:
In order to solve the problem of too high phosphorus content in end liquid steel of converter with high scrap ratio,the effects of the conditions of hot metal charging and end point on dephosphorization were studied by combing with the theory of dephosphorization thermodynamics.The results show that...

Effects of Pre-strain and Baking Process on the Microstructure and Bake-hardening Behavior of 780 MPa Cold Rolled Dual-phase Steel

Wang Minli

2017, 38(5): 129-135. doi: 10.7513/j.issn.1004-7638.2017.05.024

Abstract(80) PDF(1)

Abstract:
In a typical process,C-Mn steel was annealed at 800 ℃ for 60 s,and then cooled rapidly to 300℃ to carry out the over-aging treatment.The ferrite-martensite microstructure was obtained after the simulated continuous annealing process. After pre-straining and baking,the specimens were used to measure ...

Study on Influence Factors of Intragranular Ferrite Nucleation in Non Quenched and Tempered Medium Carbon Steel

Wu Zhe, Zhang Caijun, Liu Yi, Zhang Yanchao

2017, 38(5): 136-141. doi: 10.7513/j.issn.1004-7638.2017.05.025

Abstract(60) PDF(1)

Abstract:
The acting factors of influencing intragranular ferrite nucleation in non quenched and tempered medium carbon steel were investigated.By means of metallographic microscope and scanning electron microscope,the nucleation and growth of intragranular ferrite were investigated from three aspects of the ...

Effect of Hot Rolled Deformation on the Microstructure and Mechanical Property of Low Si-Mn-Nb As-hot Dual-Phase Steel

Li Qiuhe, Ying Chuangtao, Li Jiangwei, Ren Junwei

2017, 38(5): 142-146. doi: 10.7513/j.issn.1004-7638.2017.05.026

Abstract(76) PDF(1)

Abstract:
The effect of different deformation on the microstructure and mechanical property of Si-Mn-Nb ashot dual-phase steel were investigated by using TEM,SEM technology and optical microscopy. The results showed that the structure morphology where the island of martensite are dispersed in small ferrite ma...

Effect of Bath Temperature on Ni-Sn-Mn Alloy Coating Prepared by Pulse Electrodeposition

Meng Qingbo, Qi Haidong, Lu Shuai, Guo Zhao, Yang Haili

2017, 38(5): 147-151. doi: 10.7513/j.issn.1004-7638.2017.05.027

Abstract(69) PDF(1)

Abstract:
In order to improve the corrosion resistance of mild steel in marine environment,Ni-Sn-Mn alloy coatings were prepared on the surface of Q235 steel by pulse electrodeposition.The effect of bath temperature on coating element content,surface morphology,deposition rate,cathode current efficiency and c...

Research on Spot Welding Process of Hot Galvanizing DP780

Zhou Leilei, Yu Tengyi

2017, 38(5): 152-156. doi: 10.7513/j.issn.1004-7638.2017.05.028

Abstract(52) PDF(1)

Abstract:
In this paper,the spot weldability of hot galvanizing DP780 had been investigated and the spot welding parameters had been optimized.The spot welding performance of hot galvanizing DP780 had been evaluated by measuring the nugget diameter,penetration rate and indentation depth,observing the microstr...

Microstructure and Properties of Q420 30^# Large Channel Steel Used for Transmission Towers

Zeng Shangwu, Li Fenghui, Zhang Lei, Xu Delu, Chen Chunsheng, Su Lei

2017, 38(5): 157-162. doi: 10.7513/j.issn.1004-7638.2017.05.029

Abstract(70) PDF(3)

Abstract:
A Q420 grade 30^# large gauge channel steel was developed via vanadium micro-alloying. The microstructure and properties of tested steel were systematically investigated by using optical microscope,tensile test and impact test. The results show that the microstructure of test steel is mainly composed...

2017, 38(5): 163-164.

Abstract(46) PDF(1)

Abstract:

2017 Vol. 38, No. 5