DC Arc Furnace Technology Applied to Smelting Applications Kjell Bergman([email protected]) BjomKjellberg ([email protected]) NorraRingvagen, 36 S-722 15 Vastedis Sweden ABSTRACT DANIEL! CentroMet has developed a unique DC technology especially suitable for melting ofprereduced iron, a concept that also should be suitable for ...
Abstract. DC arc furnaces were first used industrially for the reductive smelting of chromite fines to produce ferrochromium thirty years ago. Since then, they have been used for a variety of applications, including the smelting of ilmenite to produce titania slag and pig iron, the recovery of cobalt from non-ferrous smelter slags, and the smelting of nickel laterite ores to produce ferronickel.
DC Submerged Arc Furnace (SAF) The DC furnace is ideally suited for efficient reduction of both high and low-grade fine ores, using readily available reductants like fine coal and anthracite. Since fine raw materials can be fed directly into a DC furnace, no additional agglomeration facility is needed.
3/5/2015· Zinc has a relatively low melting point 787.2°F (419.5°C), so the Arc Furnace is able to melt each casing into liquid zinc in around 5-10 seconds. That's amazing!
The test work carried out by Mintek provided the basis for the process flow sheet and engineering design of the DC arc smelting furnaces for the Shevchenko Nickel project. Mintek was contracted by Oriel Resources plc in 2004 to conduct a preliminary assessment study on smelting ferronickel from the large but relatively low grade Shevchenko ...
Rectifiers for DC electric arc furnaces DC power supply for steel, ferrochrome, titanoxid, ferronickel and arc furnaces - Increasing power quality for faster return on investment (ROI) The primary goal of any electric arc furnace operator is to minimize overall capital costs, optimize production line quality and maximize efficiency and revenue.
Our team in Düsseldorf handles all SAF-related projects for electric smelters and submerged-arc furnaces worldwide, except in southern Africa. Metix is not only responsible for all submerged-arc furnace and electric smelter projects in the southern African region, but also supplies feed material pre-heating systems as well as pellet and sinter ...
Our selection of arc melting furnaces is low cost, compact, simple to operate and reliable, yet can reach temperatures up to 3700°C and find use in a wide range of applications. Arc Melting Furnaces use an electric arc to heat or melt material and are a cost saving alternative to induction or resistance heater furnaces for certain applications.
Some myths about DC arc furnaces Significant commercialization of DC furnace technology occurred in the 1990s, when there was a huge demand for DC arc furnaces for steel scrap melting, following the development of high-power solid-state rectifiers. Around that time, about 80 DC arc furnaces were built in the northern hemisphere.
DC ARC furnace for Sponge iron/DRI (Direct Reduced Iron)/Spongy iron melting. When ferro ore was reduced to sponge iron by blast furnace, it must be melted by Electric Arc Furnace (EAF) to remove the impurities, then adjust the component to your required steel.
Low cost ferroalloy extraction in DC-arc furnace at Middleburg Ferrochrome by D. Sager, D. Grant†, R. Stadle*, and T. Schreiter‡ Synopsis Middleburg Ferrochrome (MFC), a company in Samancor Chrome, commissioned a new ferrochrome smelter in March 2009. This is a 60 MW DC-arc furnace with a DC power supply for the smelting of
• DC arc furnaces –an interesting past, a productive present, and a promising future • DC arc furnaces are not a panacea for all metallurgical problems, but are very well suited to a number of reductive smelting processes where they have been applied successfully in a number of industrial contexts, and many further applications are expected
DC Submerged Arc Furnace (SAF) The DC furnace is ideally suited for efficient reduction of both high and low-grade fine ores, using readily available reductants like fine coal and anthracite. Since fine raw materials can be fed directly into a DC furnace, no additional agglomeration facility is needed.
DC arc furnace is used to provide the appropriate conditions to generate an iron alloy in which PGMs and base metals are collected. The process is chromium-tolerant, very efficient in the collection of PGMs, and ... sulfur), from an existing smelter, and other PGM-containing wastes or by-products.
AC- AND DC- SMELTER TECHNOLOGY FOR FERROUS METAL PRODUCTION Dr. G. Kleinschmidt, Dr. R. Degel, M. Köneke, H. Oterdoom SMS SIEMAG AG Eduard-Schloemann-Strasse 4 Düsseldorf, Germany ABSTRACT In 1906, the first submerged arc furnace had been supplied by SMS Siemag. Since then the unit is
A 42 MW DC arc furnace was built at Middleberg Ferrochrome in 1997 and was followed by a 60 MW DC arc furnace in 2009 A SMELTING FURNACE CLASSIFICATION High > 1500°C Operating Temperature Low 1000°C - 1500°C Open-Arc Submerged-Arc Slag resistance Reverbatory Flash furnace Fine 0,01 – 10mm Ore size Blast furnace Cupola Coarse 10mm – 200mm ...
DEVELOPMENTS IN THE DESIGN AND CONSTRUCTION OF DC ARC SMELTING FURNACES F.P. Greyling, W. Greyling and F.I. de Waal GLPS, Box 2360, Middelburg 1050, South Africa; [email protected] ABSTRACT The aspect of sustainability of ferroalloy processes has long been a serious matter for consideration in many of the world's industrialized countries.
JONES, R.T. and KOTZÉ, I.J. DC arc smelting of difficult PGM-containing feed materials. International Platinum Conference 'Platinum Adding Value', The South African Institute of Mining and ...
DC Electric ARC furnace for Casting iron/Metal refining/Fine cabon steel melting. When ferro ore was reduced to sponge iron by blast furnace, it must be melted by Electric Arc Furnace (EAF) to remove the impurities, then adjust the component to your required steel.
3/23/2017· Small electric arc furnace is also suitable for melting iron, steel, stainless steel and other scrap metals. Electric arc furnace is good for smelting iron ore, copper ore, tin ore, gold ore, and ...
Xi'an Abundance Electric Technology Co.,Ltd. is a professional manufacturers on metallurgical equipment manufacturing, with 20 years development which have accumulated proven technique and experience in field of steelmaking and ferroalloy smelting.
The department for submerged-arc furnace (SAF) and ... Furnace roof of DC smelter. SAF in the early fifties. 5 DATA EVALUATION By means of online assistance, our customers are able to make use of a joint working group which ... SMS SIEMAG Submerged-Arc Furnaces and Electric Smelters. 2)
Outotec DC Smelting Plant Use a cost-efficient, sustainable, and compact solution for ferroalloys processing. Outotec's direct current (DC) smelting furnace can be used for direct smelting of fine ores, even those with highly variable chemical or mineralogical compositions, as well as for recycling challenging by-products such as steel dust.
electric arc furnace was 31,9% (from total crude steel production). During the 2005-2014 period, participation of steel production via electric arc furnace was increased, for example, in Italy for 12,3%, in USA for 7,5%, in Russia for 14,3%, but a due to strong increase of steelmaking production in China mainly with oxygen blowing
Abstract. DC arc furnaces were first used industrially for the reductive smelting of chromite fines to produce ferrochromium thirty years ago. Since then, they have been used for a variety of applications, including the smelting of ilmenite to produce titania slag and pig iron, the recovery of cobalt from non-ferrous smelter slags, and the smelting of nickel laterite ores to produce ferronickel.
Modelling of an ilmenite-smelting DC arc furnace process ... of the freeze lining and wall region of an ilmenite-smelting DC arc furnace. ... thermal and chemical equilibrium hold in the smelter ...
Mintek has developed a process for smelting difficult PGM-containing feed materials that contain low amounts of sulphur and/or high amounts of chromium oxide. A DC arc furnace is used to provide the appropriate conditions to generate an iron alloy that collects PGMs very effectively, leaving extremely low residual quantities of PGMs in the slag.
DC arc smelting of silicon: Is it technically feasible? M. Abdellatif Mintek, Randburg, South Africa Keywords: Pyrometallurgy, furnace, DC arc furnace, smelting, silicon Abstract – The technical feasibility of silicon smelting in a DC arc furnace was investigated. A graphite-lined furnace was operated at power levels of 150 to 160 kW, and 40 ...
DC Arc Furnace by Sir William Siemens The idea behind the (direct current) DC arc furnace has been around for a very long time. Its use for the bulk melting of metals dates back at least to 1878, when Sir William Siemens used a DC arc furnace with a vertical graphite cathode, with the arc transferred to the melt in contact with a