The Electric Arc Furnace – Part 3 (Operation) This is the third of the series of EAF for steelmaking. It focuses on the operation part of EAF production. Operation A mid-sized modern steelmaking furnace would have a transformer rated about 60,000,000 volt-amperes (60 MVA), with a secondary voltage between 400 and 900 volts and a secondary…
Electric Arc Furnace Electric Arc Furnace means an extremely hot enclosed space, where heat is produced by means of electrical arcing for melting certain metals such as scrap steel without changing electro-chemical properties of the metal. Here, an electric arc is produced between the electrodes. This electric arc is used for melting the metal. The…
The Electric Arc Furnace – History & UHP Concept (part 2) In this post, we will be talking about the history of EAF-steelmaking & the almost mystical concept of Ultra High Power Arc Furnaces (or short UHP). History The first successful and operational furnace was invented by James Burgess Readman in Edinburgh, Scotland in 1888 and…
The Electric Arc Furnace – Advantages & Deficiencies This article is transferred from The Graphite Network There is a lot of material covered. After reading the posts, you will be expert in the following topics: Advantages vs Disadvantages of EAF-use (part 1) history and UHP concept (part 2) Operation mode (part 3) EAF vs other furnaces…
The Production Feature Of Graphite Electrode (1) The production cycle is long. The production cycle of ordinary power graphite electrodes is about 45 days, the production cycle of ultra-high power graphite electrodes is more than 70 days, and the production period of graphite electrode joints requiring multiple impregnations is longer.- Production Feature Of Graphite Electrode…
Digital and intelligent solutions for electric arc furnace melting workshop production Overview Electric arc furnace (EAF) digital steelmaking first uses automation technology to process and prepare scrap steel, and then an industrial TV system and automatic measurement equipment guide the fully automated metal production process. The new intelligent equipment used in the production of electric…
Low Carbon MgO-C Refractories for Clean Steel Making in Steel Ladles In recent years, with the demand for high-quality steelmaking, constant efforts have been made to diminish the impurities during steelmaking to produce high-grade and clean steel products to meet the stringent requirement of end-users; particularly for some critical grades and applications. For this purpose,…
Steelmaking process – secondary refining For purposes of this article, Secondary Refining or Secondary Metallurgy is defined as any the post steelmaking process performed at a separate station prior to casting and hot metal desulfurization. It does not include normal alloying practices in the furnace or at the ladle during tapping. This definition is not…
How to prevent a burn-through accident of hearth bottom? The condition of the hearth bottom is an important factor in the life of the first generation of a blast furnace. The accident of burn-through of hearth bottom will cause great danger to the production and operation personnel, and even cause heavy casualties to prevent the…
Consumption and use of electrodes in electric steelmaking The principle of electric arc furnace steelmaking In electric steelmaking, the main raw material is scrap steel, the three-phase alternating current is used as the power source, and the current is used to heat and melt the charge bypassing the high temperature of an electric arc between…
