Operation and Management of Electrical Equipment in Iron and Steel Enterprises

How to ensure the reliable operation of the complex and huge electrical system composed of a large number of electrical equipment in iron and steel enterprises?Combined with working experience,the author introduces four main factors affecting the normal operation of equipment,analyzes five main problems existing in the operation and management of electrical equipment,and puts forward corresponding improvement measures,so as to improve the management level of electrical equipment in iron and steel enterprises.

RESEARCH ON THE APPLICATION OF RARE EARTHS IN IRON AND STEEL IN RECENT YEARS

China has the biggest rare earths resource in the world,no wonder she pays much at-tention to the application of rare earth metals (REM).The application of REM in iron andsteel in China began at the end of 1950’s.The production of REM-treated iron and steelhad been made steady progress in the period of 1980’s.The production of REM-treatediron and steel in 1989 was 1.4 million tons and 250,000 tons respectively.The interest oftreating steel with REM in China keeps growing even in these years,It comes from the nat-

Highlights of Recent Advances in Refractories for Iron and Steel Industry in China

Recently procured outstanding achievements in iron and steel industry in China are presented by data or facts in steel output, energy consumption, technical and economical indicators and advanced technologies that are being adopted. The latest achievements in refractonries for this biggest user industry are reviewed, covering new refractories for CDQ coke oven, BF hearth, AOD Lining, long life tundish, SEN for clean steel making and regenerative reheating furnace . The reciprocal relationship is obvious that the rapid development of iron and steel industry has given an impetus to the advance of refractories industry, which in return has contributed greatly to the former.

Some Aspects in the Development of High Performance Refractories for Iron and Steel Making in China

In the past 25 years in China, to meet with the rapid increase in steel production accompanied by adoption of advanced metallurgical technologies, there has been fast development of China＇ s refractories industry in production capacity, in quality improvement and in development of new products. Sophisticated high performance refractory materials mainly based on our rich reserves of magncsite, bauxite and flake graphite have been developed, such as carbon-bonded products, high purity oxide products, bauxite-based low creep and high strength high alumina bricks and LC, ULC and ZC castables. They have been used in blast furnaces, BOFs, EAFs, secondary refining and continuous casting with considerable improvement in service pecformance.

ABSTRACTS——From Journal of Iron and Steel Research (in Chinese) 2004,16(5)—2004,16(6)

Technical Development of Increasing Oxygen Used in EAF Process HE Qing,GUO Zheng(Central Iron and Steel Research Institute,Beijing100081,China)Abstract:Oxygen lance,burner and post-combustion are significant oxygen injection technologies in EAF process.The combination of these technologies has an important effect on improving economic target and technical target.For example,electric power consumption is reduced,the tap-to-tap is shorten,and the production rate is increased and so on.Their principle,function,feature and application were introduced,and

Current Situation and Prospect of High Performance Refractories for Iron and Steel Industry in China

The development,physicochemical properties and application effectiveness of new high performance refractory products used in iron and steel industry in recent years are summarizedThe new products include carbon-containing oxides,non-oxides,functional refractories,low cement and ultra-low cement castables etc.It is pointed out that quality of refractory products needs to be improved and high performance varieties be developed.Meanwhile,research should be done on composite materials and composite structures,equipment techniques and optimization control of refractory production should be strengthened as well.

ABSTRACTS——From Journal of Iron and Steel Research (in Chinese)2007,19(3)-2007,19(4)

Progress in Research on Liquid Zinc Corrosion of Bath HardwareWANG Wen-jun,WANG Yan-li,LIN Jun-pin,LIN Zhi(State Key Laboratory for Advanced Metals and Material,University of Science and Technology Beijing,Beijing 100083,China)Abstract:The problems of liquid Zinc corrosion of the bath hardware of galvanizing line were introduced and analyzed.The research status for the technology of providing corrosion protection was discussed.

ABSTRACTS——From the Journal of Iron and Steel Research(in Chinese)1996,8(1)——1996,8(3)

Numerical Simulation of Pulverized Coal Combustion in BF Raceway Injected by Oxy-Coal Burner Qiu Jihuan;;Zhang Zhiguo;;Sun Xuexin(Huazhong University of Science&Technology),Dong Yugui,Zhang Huihun(Central Iron&Steel Research Institute,MMI)This paper deals with the numerical simulation of the pulverized coal combustion process occurring in front of the tuyere in BF raceway.The coal was injected by oxy-coal burner in different PC quantities and different density of

ABSTRACTS──From the JOurnal of Iron and Steel Research (in Chinese)

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From the Journal of Iron and Steel Research(in Chinese)1995,7(4)—1995,7(6)

Velocity Field and Concentration Field of OxygenCoal Lance during Injection Zhou Jiangang(Central Iron and Steel Research Institute,MMI),Ding Yulong(Beijing University of Science and Technology)This paper introduces the structures of three types of oxygen-coal lances for blast furnace,i.e.multihole,center jet type and spiral type,and experimental and research work on the velocity field and concentration field in the

ABSTRACTS——From the Journal of Iron and Steel Research(in Chinese)1999,11(1)—1999,11(3)

Influence of AlOon RD1 of Sinter Yang Huaming;;Qiu Guanzhou(Central South University of Technology)Fracture toughness method combined with electron microscopy was adopted to investigate the influence of AlOon RDI of sinter.The results indicate that AlOis mainly in the glass phase of sinter in the forms of ferrum silico aluminate and calcium silico aluminate,which results in the decrease of

ABSTRACTS——From the Journal of Iron and Steel Research(in Chinese)1999,11(4)—1999,11(6)

Effect of UPC on the Properties of High TitaniumBearing Slag of Blast Furnace ZHU Zi-zong,Zhang Bing-huai,Qiu Gui-bao(Chongqing University)Abstract:Experiments were carried out to clarify the effect of UPC on the forming and dropping of high titanium-bearing

Baotou Iron and Steel Company

The Baotou Iron and Steel Company(BISCO) is located at Baotou,830 kilometerswest of Beijing,in the Inner MongoliaAutonomous Region.The ore deposit atBaiyun’ebo,on which the company is based,was discovered by geologist DING Daohengin 1927 and was later found to be rich inrare earth elements.An extensive prospecting campaignwas launched after the founding of the

From the Journal of Iron and Steel Research(in Chinese)

Experimental Study on the Pressure Drop of Pneumatic Conveying Pulverized Coal in a Pipeline(Ⅱ)Zhou Jiangang,Zhang Shu(Central Iron&Steel Research Institute,MMI)The dense-phase conveying of pulverized coal is a trend in the field of blast furnace.The experimental study on horizontal and vertical pipe pressure drops was completed,in which the solid/gas ratio was from 40 to 230kg/kg.The result was compared with

Suggestions on Process Technology Development of Iron and Steel Making in China

1 Introduction The 21st century is coming and the world iron and steel making technology is facing an important technical evolution at this century turnover,which is reflected in two aspects:①Rapid development of traditional iron&steel making technology with continuous regeneration;②Three major frontier techniques of metallurgy(smelting reduction;near-net-shape continuous

Maanshan Iron and Steel Design Institute under the Ministry of Metallurgical Industry

Founded in July 1962.Maanshan Iron and Steel DesignInstitute is an important design institute directly under theMinistry of Metallurgical Industry,and a state Class A designinstitute registered in World Bank and Asia DevelopmentBank,also a member unit of China International ConsultantsCompany and China Metallurgical Construction GroupCompany.It boasts a staff of 1.500,including 1,200 engineeringand technical people(400 senior engineers included).It has 22research offices,such as iron-smelting,steel making,steel-rolling,mining,dressing and sintering,34 engineering designfaculties,has well-equipped electronic computer stations,experimenting labs and printing factories,and has divisions inShanghai and Zhuhai. The institute is engaged in the engineering design,technical consultancy,supervision and general contract

The Capital Iron and Steel Corporation's Fast Development of Exposer Trade

The Capital Iron and Steel Corporation (Shou Gang) is one of the eight major iron and steel companies in China and one of the first state-owned enterprises to be selected as a testing ground for the reform programme, since it was authorized to manage its own foreign trade in 1981, the Corporation’s export trade has expanded steadily. Especially since 1992, its development in foreign trade has skyrocketed because China Shou Gang International Trade Construction Company was approved to be set up. In 1993, it exported 239,700 tons of steel. Its foreign exchange income reached US$630 million, of which the Shou Gang’s self-managed exports took up US$96.98 million. During the