钢铁钒钛

Study on Preparation of Metatitanic Acid by Hydrolysis in the Process of Producing Titanium Dioxide by Decomposition of Titanium Slag with Alkali Molten Salt

Han Yanfang, Sun Tichang, Xu Chengyan, Qu Jingkui, Qi Tao, Wang Guiling

2012, 33(3): 1-5.

Abstract(72) PDF(2)

Abstract:
Preparation of TiO₂ with titanium slag by molten-salt method is a new way to produce TiO₂ in which the preparation of metatitanic acid by hydrolysis is an important step due to its huge influence on the quality and yield of the finished products.This paper has identified the factors including concen...

Influence of Vanadium Slag Cooling Scheme on Particle Size of Vanadium Spinel and Sodium Roasting

Fu Zibi, Yin Danfeng, Zhang Xinxia

2012, 33(3): 6-10.

Abstract(60) PDF(2)

Abstract:
Phase structures and spinels’ particle size of water-cooled vanadium slag,air-cooled vanadium slag and slowly cooled vanadium slag are analyzed,and the effect of holding time at 1 000 ℃ under nitrogen atmosphere on particle size of the vanadium spinel is studied.In addition,comparisons of sodium roa...

Study on Quality Improvement of Vanadium Precipitation with （NH₄）₂SO₄

CHEN Zi-qing

2012, 33(3): 11-15.

Abstract(72) PDF(2)

Abstract:
The optimization of process parameters and control measures during the process of vanadium precipitation with acidic ammonium is studied to improve the quality of feedstocks for the production of high grade V₂O₃.Major factors contributing to the quality of APV prepared by vanadium precipitation with...

Study on Recycling Waste Water from V₂O₅ Extraction from the Stone Coal Leaching Solution

Huang Han, Zeng Lunsheng, Liang Huanlong, Luo Siqiang, Lei Weiming

2012, 33(3): 16-19.

Abstract(58) PDF(1)

Abstract:
Experiments for recycling waste water from the process of V₂O₅ extraction from stone coal leaching solution are carried out in which a V₂O₅ extraction process of direct acid leaching and solvent extraction is employed using stone coal obtained from a certain area of Guangxi Province as raw materials...

Discussion on Routes of Recycling Waste Water Produced from APV Precipitation with Acidic Ammonium Salts

WANG Ying

2012, 33(3): 20-23.

Abstract(66) PDF(1)

Abstract:
Routes of recycling waster water produced from APV precipitation with acidic ammonium salts are proposed,which is expected to be used for rinsing precipitation equipment,washing tailings and leaching roasted materials and corresponding experiments are carried out.The experimental results show that u...

Investigative Test of Iron Separation Process of a Panzhihua Lower Grade Vanadium-bearing Titanomagnetite Ore

Zeng Zhiyong

2012, 33(3): 24-27,39.

Abstract(60) PDF(1)

Abstract:
Investigative test of iron separation process of a kind of Panzhihua lower grade vanadium-bearing titanomagnetite ore,including crushing,grinding and magnetic separation were carried out.Two options were tested:（a） treat the ore by grinding and magnetic separation after crushing;（b） enrich the ore b...

Numerical Simulation on Cooling Dynamics of Slag Droplet Granulated by Gas Quenching

Lu Hongwei, Li Junguo, Zhang Yuzhu

2012, 33(3): 28-33.

Abstract(80) PDF(1)

Abstract:
Steel slag droplets will experience a complex process of cooling and solidification after they are granulated by gas quenching.Numerical simulation for cooling dynamics of slag droplets is carried out by Fluent software.The simulation result is compared with that obtained from numerical calculation....

Numerical Simulation of Slag Entrainment by Vortex Flux During Tapping at Converter

Wang Jianqiang, Li Junguo, Han Zhijie

2012, 33(3): 34-39.

Abstract(111) PDF(5)

Abstract:
In order to effectively reduce the quantity of slag entrained into ladle during tapping and improve steel quality,a more efficient and low-cost method of slag stopping should be developed.In this paper,numerical simulation for static tapping process under different original molten steel levels has b...

Water Simulation of Steel/Slag Interface Flow Regime of the Slab Mould

Shu Zhihao, Hou Zewang

2012, 33(3): 40-45.

Abstract(56) PDF(1)

Abstract:
Based on a full-size water mould,the influences of the process parameters on the flow regime of steel/slag interface of the slab mould,such as the mould width,casting speed,SEN structure、submergence depth of SEN,etc were investigated.The results show that interfacial fluctuations and the max fluid r...

Research on Characteristics of the Dead Zones in RH Melt Bath with Simulation Methods

Xue Liqiang, He Ping

2012, 33(3): 46-52.

Abstract(72) PDF(1)

Abstract:
Taking the 170 t RH refining equipment of a steel company as a prototype,a mathematical simulation of flow field in the RH is carried out to study the dead zones in the RH melt bath under different gas flow rates,inner diameter and immersion depth of snorkel and vacuum degree.The results show that t...

Analysis on Multi-taper Billet Mould

Zhang Haihui, Liu Jianmin, Liu Zengxun, An Zhenliang

2012, 33(3): 53-58.

Abstract(53) PDF(1)

Abstract:
Based on stress inheriting characteristic of the billet shell in continuous casting,a thermo-mechanical coupling model of billet is established.Heat transfer and stress fields of the billet in the mould is analyzed by the finite element software ANSYS.The mould taper is optimized according to princi...

Research on Behavior of Non-metallic Inclusions in Non-oriented Silicon Steel During Refining Process

Liu Jingjing, Qin Zhe, Hou Zewang, Qiu Shengtao, Wang Janjun

2012, 33(3): 59-64.

Abstract(79) PDF(3)

Abstract:
During the refining process,the transformation of non-metallic inclusions in non-oriented silicon steel produced by the process of KR-BOF-RH-ASP is analyzed using the methods of SEM-EDS and main sources of non-metallic inclusions are identified in this paper.The results show that the inclusions afte...

Evolution of Hot Rolled,Normalized and Cold Rolled Texture of Non-Oriented Silicon Steel Produced by CSP

Pu Chunlei, Li Jianjun, Yue Erbin, Song Lin

2012, 33(3): 65-69.

Abstract(79) PDF(1)

Abstract:
By using EBSD and X-ray diffraction technology,evolution of hot rolled,normalized and cold rolled textures of non-oriented silicon steel produced by a simulation process of CSP was examined.The results show that the texture types along the thickness in the hot rolled strip are substantially differen...

Effects of Production Process and Chemical Compositions on Magnetic Properties of Phosphorus-bearing Non- oriented Silicon Steel

Zhang Feng, Lv Xuejun, Ma Changsong, Chen Xiao

2012, 33(3): 70-76.

Abstract(57) PDF(2)

Abstract:
Based on industrialization of low and medium grade non-oriented silicon steel,the effects of production process and chemical compositions on magnetic properties of phosphorus-bearing non-oriented silicon steel are investigated.The results show that phosphorus could restrain the recrystallization of ...

Research on High Temperature Ductility of 1.2%Si Cold Rolled Non-oriented Electrical Steel Slab

Hu Shaodong, Xiang Li, Lai Chaobin, Qiu Shengtao, Jia Caixia, Xie Senlin

2012, 33(3): 77-81.

Abstract(65) PDF(1)

Abstract:
High temperature ductility test for 1.2% Si cold-rolled non-oriented electrical steel slab at 600~1 300 ℃ has been carried out by Gleeble1500 stress/strain thermomechanical simulator.Thermoplasticity and intensity curve of samples under testing temperatures was obtained,then through the observation ...

Evolution of Microstructure and Texture of 50W1300 Non-oriented Silicon Steels

Jia Caixia, Xiang Li, Tang Guangbo, Qiu Shengtao, Zhao Hongjin

2012, 33(3): 82-87.

Abstract(114) PDF(3)

Abstract:
The effect of hot continuous rolling-cold rolling-annealing process on microstructure and texture of 50W1300 non-oriented silicon steel is investigated by the technology of EBSD and electron microscopy.The results show that during thermoplastic processing,all the grains in the surface layer of hot-r...

Study on Thermal Deformation Behavior of 65Mn Steel for Saw Blade

Chen Liansheng, Liu Song, Song Jinying, Tian Yaqiang

2012, 33(3): 88-92.

Abstract(82) PDF(3)

Abstract:
The thermal deformation behavior of 65Mn steel for saw blade is investigated through thermocompression method with Gleeble-3500 thermal mechanical simulator.The results show that in a certain testing condition,the deformation resistance as well as peak strain of the 65Mn steel increases with the dec...

Research on non-metallic inclusions of 20G Steel

Gao Jü, Li Lijie

2012, 33(3): 93-97.

Abstract(48) PDF(1)

Abstract:
In the early production of 20G in Steel,crack defects and macro examination unqualified.So the type,resource,amount and distribution of non-inclusions are systemically studied by the actual combination of laboratory and field research methods for the production process of 20G steel,The result shows:...

Latest Development of New Vanadium Materials

Wang Zhonghang, Zheng Shili, Du Hao, Wang Shaona, Zhang Yi

2012, 33(3): 98-106.

Abstract(50) PDF(2)

Abstract:
As an important strategic metal resource for a country,vanadium and its compounds are widely used in metallurgy,aerospace,chemical and other fields.In recent years,as pressures on human beings in resources,energy and environment gradually increase,more and more researches have been made on vanadium ...

2012, 33(3): 107-108.

Abstract(45) PDF(1)

Abstract:

2012 Vol. 33, No. 3