钢铁钒钛

Technology Analysis on Fluidized Bed Hydrogen Metallurgy at Low Temperature

CAO Chaozhen, GUO Peimin, ZHAO Pei, PANG Jianming

2008, 29(4): 1-6.

Abstract(101) PDF(2)

Abstract:
Low-temperature fluidized bed hydrogen metallurgy was studied by thermodynamics calculation in this paper.Traditional hydrogen metallurgy had the disadvantages of high gas consumption and low productivi- ty.The thermodynamics calculation indicates that under the condition of ore powder preheated,the...

Preparation of Nano-TiO₂ by Stripping Precipitation Method and Photocatalytic Performance

ZHANG Lingyun, GUAN Hangmin, LI Hansheng, ZHANG Dongxiang

2008, 29(4): 7-13.

Abstract(63) PDF(2)

Abstract:
Precursor of nano-TiO₂ was prepared through stripping precipitation method with D2EHPA diluted by tetrachloride carbon as an extractant,and ammonia and ammonia-alcohol aqueous solution as a re-ex- tractant and precipitator.This process was optimized by controlling mass transport process on the inter...

Study on Formaldehyde Degradability of Metal-doped Nano-TiO₂

WU Jianchun, HUANG Wanxia, SHI Ruicheng

2008, 29(4): 14-17.

Abstract(73) PDF(1)

Abstract:
The formaldehyde degradability by nanometer TiO₂ that is metal-doped compound was studied.The result shows that the formaldehyde degradability and the visible light absorbency are improved by the V-doped nanometer TiO₂.The nanometer TiO₂ of 0.5 % Fe+0.3 % V doped has better photocatalytic activity t...

Application of the Large Industrial Microwave Oven in Pre-production of Vanadium Nitride Product

DING Yu, ZHOU Jicheng, FU Huihua

2008, 29(4): 18-21.

Abstract(63) PDF(1)

Abstract:
The developing process and application of the industrial microwave oven with the largest heat power and stove size in china developed independently for vanadium nitride production have been introduced.Using the industrial microwave oven,we have produced vanadium nitride product,the standard of which...

Preparation of Titanium Carbonitride from Panzhihua Ti-bearing Blast Furnace Slag Using Magnetic Separation

YI Xiaoxiang, LI Yawei, YANG Dabing

2008, 29(4): 22-25.

Abstract(69) PDF(2)

Abstract:
The preparation of titanium carbonitride from Panzhihua Ti-bearing blast furnace slags which contains 20 %～26 % TiO₂ is described.The process contains two main stages,which consists of reducing carbonization and nitriding of titanium oxide of slags,and iron as a carrier can realize the titanium carb...

Development and Application of Refining Desulfurizing Agent Based on Panzhihua Iron and Steel Co.Blast Furnace Slag Extracted Titanium

LI Youqi, KE Changming, GAN Lin, LIU Xiao, LI Yousheng, LI Nan

2008, 29(4): 26-31.

Abstract(71) PDF(1)

Abstract:
A new refining desulfurizing agent with good desulphurization property but without CaF₂ was synthe- sized using Panzhihua Iron and Steel Co.blast furnace（BF）slag extracted titanium as main materials and ac- tive calcium oxide as addition agent.The effects and action mechanism of CaO content on the p...

Effect of Vanadium on the Microstructure and Properties of YQ450NQR1 Higher Strength Weathering Steels

LIU Qingchun, ZHONG Hua, ZHENG Zhiwang

2008, 29(4): 32-36.

Abstract(100) PDF(3)

Abstract:
The target-oriented researches on the vanadium-containing YQ450NQR1 high strength weathering steels were conducted in this paper.Methods such as optical microscope,high resolution electron microscope, phase analyzing,and so on were used to investigate the effect of vanadium on microstructure and the...

Study on the Improvement of Slab Equiaxed Crystal Ratio by Electric Pulse Acted on Liquid Steel in Continuous Casting Mould

GU Wuan, CANG Daqiang, ZHANG Kaijian, ZONG Yanbin, CHEN Lin, CHEN Haijun, GU Longjian, YANG Subo, YANG Senxiang

2008, 29(4): 37-41.

Abstract(84) PDF(1)

Abstract:
The improvement of slab equiaxed crystal ratio by electric pulse on liquid steel in continuous casting mould of Panzhihua steel No.1 slab was studied.The improvement of slab equiaxed crystal ratio was analyzed according to energy consumption per ton steel by electric pulse on liquid steel in continu...

Research on Secondary Cooling Technology for Continuous Casting of 360 mm× 450 mm Bloom

CHEN Yong, YANG Subo, ZHU Miaoyong

2008, 29(4): 42-47.

Abstract(64) PDF(1)

Abstract:
In view of surface longitudinal crack,intermediate crack and center line crack on 360 mm×450 mm continuous casting blooms,the secondary cooling scheme employed in the continuous bloom caster was opti- mized,which included increasing the specific water flow,adjusting the water flow distribution among...

Effect of Annealing Microstructure and Texture on Magnetic Properties for the Low Grade Cold Rolled Non-oriented Silicon Steel by CSP Process

ZHU Tao, SHI Lifa, CHEN Qian

2008, 29(4): 48-51,57.

Abstract(112) PDF(1)

Abstract:
The distribution and composition of the texture and microstructure in two different the low grade cold roiled non-oriented silicon steel have been investigated using optical microscope and X-ray diffraction ODF analysis methods.The influences of texture types and microstructure on the magnetic prope...

Fe-VC Composite and 45^# Steel TIG Welding

YANG Tinggui, WANG Yisan, CHENG Fengjun, GAO Jian, ZHOU Zhao

2008, 29(4): 52-57.

Abstract(87) PDF(1)

Abstract:
The study on welding performance of Fe-VC composite and 45^# steel has been investigated,with tungsten inert gas welding（TIG）,and an austenitic stainless welding wire（ER309L）as filler metal.The mi- crostructure and phase of the welded joint were studied with the help of SEM and XRD;the distribution o...

Determination of Reduction Parameters of Soft Reduction in High Carbon Steel Continuous Casting Blooms

LIU Wei, LIU Liu, HE Ping

2008, 29(4): 58-62.

Abstract(81) PDF(1)

Abstract:
Soft reduction technology that is known to be one of the effective ways to minimize segregation is used widely in high carbon steel continuous casting blooms.Determination of reduction parameters is very im- portant to the soft reduction technology.Based on the theoretical analysis and the product e...

Objective Analyzing of Thin Slab Continuous Casting and Rolling Technology

LIAO Jianyun

2008, 29(4): 63-66.

Abstract(88) PDF(1)

Abstract:
There are distinct differences in slab thickness,casting speed,cast structure and on-line continu- ous rolling between thin slab casting and conventional process.The thin slab process has some advantages of stronger cooling strength,shorter product line and lower consuming.In the meantime,it also ha...

Research on the Process of Improving the Molten Steel Quality of Low Alloy Steel

ZENG Jianhua, CHEN Tianming, CHEN Yong, YANG Subo, JIANG Nanhong, YANG Senxiang

2008, 29(4): 67-71.

Abstract(70) PDF(1)

Abstract:
In view of the actual situation of Panzhihua Iron ＆ Steel（Group）company（PZHISC）,in order to controlling compositions of ladle slag,a high basic refining slag was added to ladle during the steel being tapped,a modifier was added to ladle after the steel was tapped,also a small number of high basic re...

Effects of Solid Fuel Types and Ratio on Sintering Process and Metallurgical Property of V-bearing Titaniferous Magnetite Sinter

ZHANG Zhenfeng, Lü Qing, WANG Wenshan, ZHANG Shuhui, LIU Zengxun

2008, 29(4): 72-76.

Abstract(79) PDF(1)

Abstract:
Based on the material condition of Chenggang sintering state,the effects of solid fuel types and ratio on sintering process and metallurgical property of agglomerate with vanadium were researched.The results show that with the white coal instead of coke powder as solid fuel,the magnetite,silicate an...

Analysis on the Blackening Surface of the Low Carbon Aluminum-killed Steel

LIU Yuzhang, DAI Xuecheng, ZHANG Xinpeng

2008, 29(4): 77-80.

Abstract(67) PDF(1)

Abstract:
After low carbon aluminum-killed steel was annealed in the bell annealing furnace,the filiform blackening surface of the cold-rolled steel sheet was investigated,and its micro-morphology,elemental composition,structure and generation mechanism was analyzed and discussed.The studies show that the phe...

2008 Vol. 29, No. 4