钢铁钒钛

Effects of Calcination Time on Rutile Pigment Production via Short Sulfate Process

Tian Congxue

2015, 36(6): 1-5. doi: 10.7513/j.issn.1004-7638.2015.06.001

Abstract(123) PDF(5)

Abstract:
Short sulfate process was adopted to produce rutile titanium dioxide pigment by using unenriched industrial TiOSO₄ solution as raw material. The effects of calcination time at high temperature on the crystal structure,particle size distribution and pigment performances of rutile pigment were investi...

Research on Reduction of Pre-oxidized Titanium Slag

Lu Hui, Xie Hongyan, Meng Jun, An Jianguo, Xie Gang

2015, 36(6): 6-12,17. doi: 10.7513/j.issn.1004-7638.2015.06.002

Abstract(75) PDF(5)

Abstract:
A new method of deep-reduction and high pressure acid leaching was introduced to prepare rich titanium material with the pre-oxidized titanium slag from Yunnan as raw material,and the effects of atmosphere,temperature,time and cooling system on the reduction were discussed. The results show that wit...

Study on Kinetics of Ammonium Polyvanadate Re-dissolution

Yin Danfeng, Sun Zhaohui, Jing Han, Du Guangchao, Chen Haijun

2015, 36(6): 13-17. doi: 10.7513/j.issn.1004-7638.2015.06.003

Abstract(115) PDF(3)

Abstract:
Ammonium polyvanadate re-dissolution is an important process for industrial production of high purity vanadium pentoxide. The pH calibration method was employed to measure the re-dissolution rate of ammonium polyvanadate. The re-dissolution kinetics of ammonium polyvanadate was studied under product...

Research on Removal of Calcium in Metatitanic Acid

Wang Haibo, Wang Bin

2015, 36(6): 18-22. doi: 10.7513/j.issn.1004-7638.2015.06.004

Abstract(78) PDF(3)

Abstract:
In order to remove calcium sulfate in metatitanic acid produced by sulfate process,the changes in solubility of calcium sulfate in solutions containing 1% sulfate acid with addition of different cosolvents were investigated by isothermal equilibrium method,and then the removal of calcium for metatit...

Influence of Impurity Ions in the Electrolyte on Vanadium Battery Performance

Chen Fuyu, Gu Shiyan, Sun Qing, Chen Hui, Liu Qingyu

2015, 36(6): 23-27,31. doi: 10.7513/j.issn.1004-7638.2015.06.005

Abstract(207) PDF(6)

Abstract:
Study on the influence of impurity ions in electrolyte is critical for optimizing and improving the performance of vanadium battery. Considering electrolyte materials and operation of vanadium battery,two typical ions,SiO₃^2- and Fe²⁺,were selected as the research object. The influences of SiO₃^2- and...

Effect of Calcination Temperature on Pigment Properties and Particle Size of Anatase Titanium Dioxide

Luo Zhiqiang

2015, 36(6): 28-31. doi: 10.7513/j.issn.1004-7638.2015.06.006

Abstract(88) PDF(4)

Abstract:
The effect of calcination temperature on the achromic ability,whiteness,morphology and particle size of anatase titanium dioxide were studied in this paper,and the calcinated samples were characterized by Raman spectra,pigments properties test and SEM. The results show that with calcination temperat...

Effect of Vanadium on the Microstructure and Properties of Magnesium Alloy for Electronics and Electrics

Zhu Shunlan, Huang Hui, Deng Hao

2015, 36(6): 32-36. doi: 10.7513/j.issn.1004-7638.2015.06.007

Abstract(116) PDF(4)

Abstract:
A new type of magnesium alloy containing vanadium was prepared with the vanadium powder effectively added into the cast AZ81 parent magnesium alloy by friction stir processing,and the microstructure,phase composition,micro-texture and mechanical properties of the alloy were tested and analyzed. The ...

Dynamic Precipitation Behavior of V-N Microalloyed Steel in Low Temperature Region

Cui Chenshuo, Gao Cairu, Yang Xiongfei, Du Linxiu, Chen Yuxuan

2015, 36(6): 37-43. doi: 10.7513/j.issn.1004-7638.2015.06.008

Abstract(121) PDF(3)

Abstract:
The adverse effect of carbon on the toughness of steel can be reduced in low carbon steel.Through controlled rolling and cooling,high dislocation density of bainite organization was obtained in low carbon steel,and phase transformation strengthening can be achieved. However,single reinforcement meth...

Technological Conditions and Mineralogical Changes of Alkaline Treatment on Ti-bearing Blast Furnace Slag

He Siqi, Sun Hongjuan, Peng Tongjiang, Wu Xiao

2015, 36(6): 44-50,56. doi: 10.7513/j.issn.1004-7638.2015.06.009

Abstract(165) PDF(10)

Abstract:
Ti-bearing blast furnace slag is the industrial waste produced by blast furnace ironmaking in Panzhihua steel plant,and the results of XRD,XRF and metallurgical microscopy analysis of the slag suggest that the main mineral phase includes perovskite,diopside and spinel with 20% of titanium content,an...

Removal of the Harmful Elements and Iron Recovery from the Blast Furnace Gas Ash by Chloridizing Roasting

Deng Yongchun, Jia Suqi, Wu Shengli, Jiang Yinju

2015, 36(6): 51-56. doi: 10.7513/j.issn.1004-7638.2015.06.010

Abstract(95) PDF(3)

Abstract:
Due to the complexity of Bayan Obo iron ore,the blast furnace gas ash of Baotou steel has low content of iron but is rich in harmful alkali metal oxides like K₂O and Na₂O as well as oxides of Pb and Zn. Two methods named reduction-evaporation-magnetic separation and chlorination-evaporation were int...

Injection of Gravity Precipitator Dust into Blast Furnace

Li Yanjiang, Lü Qing, Lu Jianguang, Liu Xiaojie, Huang Honghu, Wang Yan

2015, 36(6): 57-62. doi: 10.7513/j.issn.1004-7638.2015.06.011

Abstract(143) PDF(5)

Abstract:
The properties of gravity precipitator dust of blast furnace (BF) in Hanbao Iron and Steel Co.,Ltd. (Hanbao),including ignition point,grindability and fluidity were analyzed,and the effect of combustion improver on the burning rate of the dust was studied on pulverized burner. The structural morphol...

Research on Carbothermic Reduction for Dephosphorization from Converter Slag by Microwave Heating

Ai Liqun, Zhang Yanlong, Zhu Yiheng

2015, 36(6): 63-67. doi: 10.7513/j.issn.1004-7638.2015.06.012

Abstract(87) PDF(2)

Abstract:
The carbothermic reduction experiments of converter slag were carried out by microwave heating under nitrogen atmosphere. The effects of reduction temperature,carbon equivalent,granularity and reduction time on the phosphorus distribution in slag,iron and gas phase were studied.Results show that pyk...

Effect of V Microalloying in The Hot Working Behavior of High Mn TWIP Steels

Llanos L, Pereda B, Rodriguez-Ibabe J M, Lopez B

2015, 36(6): 68-73,93. doi: 10.7513/j.issn.1004-7638.2015.06.013

Abstract(50) PDF(2)

Abstract:
The present work focuses on the study of static softening and strain-induced precipitation in high Mn (20%~30 %) TWIP steels microalloyed with vanadium. The effect of different V (0.1%,0.2%) and C (0.2%,0.6%,1 %) contents has been investigated. The aim is to evaluate at which conditions (composition...

Effect of Titanium Compounds on the Fluidity of Medium-titanium Slag of Blast Furnace

Zhao Guohong, Zhang Shuhui, Lan Chenchen

2015, 36(6): 74-78. doi: 10.7513/j.issn.1004-7638.2015.06.014

Abstract(55) PDF(3)

Abstract:
The effect of TiO₂ and TiC content on the melting properties of medium-titanium slag at different conditions was investigated using melting properties instrument (RTW). And the viscosity of slag in the tuyere areas of blast furnace (BF) was measured. The results show that,under a reducing atmosphere...

Research of TiO₂/SiO₂ Influence on Furnace Burden’s Dropping Performance of Vanadium-titanium Magnetite

Wang Fujia, Lü Qing, Chen Shujun

2015, 36(6): 79-83. doi: 10.7513/j.issn.1004-7638.2015.06.015

Abstract(47) PDF(2)

Abstract:
Experiments were carried out in the lab to simulate dropping zone of blast furnace in a high temperature oven,the effect of different TiO₂/SiO₂ on charge softening temperature range,melting temperature range,maximum pressure and other high temperature physical properties had been respectively discus...

Study on Determination of Composition of Converter Steelmaking Slags for Hot Metal Containing Vanadium and Titanium

Zhou Hai, Tang Ping, Pan Yinhu, Hou Zibing

2015, 36(6): 84-88. doi: 10.7513/j.issn.1004-7638.2015.06.016

Abstract(70) PDF(2)

Abstract:
The hot metal produced by Chonggang has 0.28% vanadium-titanium content,therefore the slag complete melting temperature is lower than that of common slag due to the action of vanadium-titanium oxide in smelting process. As a result,furnace lining is subject to serve erosion and leads a shorter campa...

Effects of Normalizing Temperature on Impact Toughness of Gas Cylinder Steel 34Mn2V

Dai Huayun, Deng Tongwu, Li Hongguang, Lei Xiuhua

2015, 36(6): 89-93. doi: 10.7513/j.issn.1004-7638.2015.06.017

Abstract(58) PDF(2)

Abstract:

"Mechanical properties of 34Mn2V after being normalized at different temperatures had been measured,and the effects of resulting microstructure on impact toughness had been investigated Results from laboratory and industrial production indicated that impact toughness of 34Mn2V could be improved by u...

Study on Refining Technology of High Quality Cord Steel Production

Zeng Jianhua, Chen Yong, Wang Xinhua, Jiang Min, Yang Senxiang, Zhang Min, Pan Hong

2015, 36(6): 94-100. doi: 10.7513/j.issn.1004-7638.2015.06.018

Abstract(129) PDF(13)

Abstract:
In order to meet the strict requirements of inclusion and cleanliness for high quality cord steel,top slag composition and refining process had been studied through predication and industrial practice.The results show that the inclusions can meet the requirements of plasticity at lower melting tempe...

Numerical Simulation of Gas-solid Flow in Fluidized Bed with Inner Partition Plates

Pan Gang, Fan Yong, Peng Yingbin, Wu Wenfei

2015, 36(6): 101-107. doi: 10.7513/j.issn.1004-7638.2015.06.019

Abstract(73) PDF(2)

Abstract:
Numerical simulation of gas-solid flow in the fluidized bed with inner partition plates had been carried out based on EMMS model coupling with two-fluid model in order to investigatethe gas-solid velocity distribution and solid particles volume fraction distribution,as well as the effect of the size...

Investigation on the Reduction Kinetics of Carbon Addition to Baiyan Obo Barun Ore by TG-MS Analysis

Shi Xuchao, Zhao Zengwu, Jin Yongli

2015, 36(6): 108-112. doi: 10.7513/j.issn.1004-7638.2015.06.020

Abstract(61) PDF(2)

Abstract:
Taking Baiyan Obo Barun ore as raw material,the carbon reduction process and its kinetics had been studied by by TG-MS analysis under 1 323~1 573 K,and the different minerals activation energy in the reduction process with the carbon gasification reaction as controlling process had been investigated...

Influence of End-point Temperature Control on Dephosphorization for 100t Top and Bottom Combined Blown Converter Process

ABuLikemu·Yasen, Luo Kaimin, Li Jing, Yao Yongkuan, Hu Daofeng, Li Xiang

2015, 36(6): 113-116. doi: 10.7513/j.issn.1004-7638.2015.06.021

Abstract(145) PDF(4)

Abstract:
In order to address the dephosphorization problem of converter at the condition of high temperature,based on a 100 t converter dephosphorization experiments,the effect of end-point temperature control in converter on dephosphorization and measures that increase the dephosphorization capacity of conv...

The Mineral Composition and Disseminated Structure Change of Specularite in the Magnetic Roasting Process

Ding Chunjiang, Chen Tiejun, Huang Xianbao, Ma Hao, Su Tao, Qu Wangang

2015, 36(6): 117-122. doi: 10.7513/j.issn.1004-7638.2015.06.022

Abstract(137) PDF(5)

Abstract:
Thanks to its complex composition and subtle disseminated extent,the specularite is a refractory iron ore. In this paper,a magnetic roasting experiment was implemented on specularite ore fines by a rotary kiln. The good roasting results had been achieved,and under the condition of grinding fineness(...

Causes Analysis and Improvements of Tundish Nozzle Clogging for Aluminized Steel

Duan Yongqing, Chen Xiaohui, Wang Yuecong

2015, 36(6): 123-127. doi: 10.7513/j.issn.1004-7638.2015.06.023

Abstract(87) PDF(2)

Abstract:
In this paper the fluorescence scanning results from the tundish nozzle clogging material in combination with production data including deoxidizing degree of refining process,the effect of calcium treatment,the refining treatment time and the secondary oxidation degree in continuous casting process ...

Water Simulation on Mixing Time and Slag Entrapment for a 100t Ladle

Zhao Qingsong, Qin Zhe, Zhang Mingbo, Qiao Zhi, Qiu Shengtao, Lai Chaobin

2015, 36(6): 128-133. doi: 10.7513/j.issn.1004-7638.2015.06.024

Abstract(77) PDF(4)

Abstract:
Based on similarity theory,the 1:4 water model was established for a 100 t ladle in a steel plant,the effect of different positions of bottom nozzle and gas flow-rate on mixing time and slag entrapment was studied by water model experiments. The results showed the mixing time for single nozzle was s...

Property Optimization of Mould Flux for the Surface Quality Problems of ML08Al Billet

Sun Ligen, Fan Sai, Zhu Liguang, Zhang Qi, Han Yihua

2015, 36(6): 134-140. doi: 10.7513/j.issn.1004-7638.2015.06.025

Abstract(98) PDF(2)

Abstract:
The surface defects of ML08Al billet produced by a Chinese steel plant were dominated by angle hook type of oscillation mark and surface concave. Through the analysis of composition and physicochemical properties of the used mould flux,it was found out that the high level of Fe₂O₃ in mould flux woul...

Effect of Ce Addition on Microstructures and Properties of 65Mn Steel

Yang Jialin, Jiang Mingzhen, Cui Zilong, Wang Shebin

2015, 36(6): 141-149. doi: 10.7513/j.issn.1004-7638.2015.06.026

Abstract(99) PDF(4)

Abstract:
The 65 Mn steel with different contents of cerium were prepared by a vacuum induction furnace. Optical microscope,SEM,EDS and XRD were employed to analyze the influence of rare earth element on microstructure and mechanical properties of 65 Mn steel. The results are shown as follows: when the conten...

2015, 36(6): 150-151.

Abstract(49) PDF(2)

Abstract:

2015 Vol. 36, No. 6