المنتجات الساخنة
Simulation of ferro-alloy smelting in DC arc furnaces
网页2016年12月1日Based on the successful operation of the DC arc furnace for chromite smelting at Krugersdorp, Middelburg Ferrochrome (now part of Samancor Chrome) built
Contact
DC Arc Furnaces — Past, Present, and Future Semantic
网页2014年1月24日The successful operation of DC plasma arc furnaces depends to a large extent on gaining a fundamental understanding of the arc phenomenon itself, and
Contact
Low cost ferroalloy extraction in DC-arc furnace at
网页2010年12月1日Based on the successful operation of the DC arc furnace for chromite smelting at Krugersdorp, Middelburg Ferrochrome (now part of Samancor Chrome) built
Contact
Technology Innovations in the Smelting of Chromite Ore
网页DC arc furnace uses a single solid carbon electrode as the cathode, and produces a DC arc to an anode in the bottom of the furnace (Figure 4). The arc is normally an open or
Contact
SOME ASPECTS OF THE PRODUCTION OF
网页Since the inception of this process, the DC arc furnace test facilities at Mintek have been employed to test varying composition, grade and mineralogy of chromite ores using
Contact
Ferroalloys DC Smelting Plant Metso Outotec
网页Ferroalloys DC Smelting Plant. Operation. Metso 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
Contact
LOW COST FERROALLOY EXTRACTION IN DC-ARC
网页Chrome smelter in March 2009. This is a 60 MW DC-arc furnace with a DC power supply for the smelting of Transvaal chromite ore fines. With the benefit of 12 years experience
Contact
Production of Ferro-Chrome IspatGuru
网页2018年7月10日HC Fe-Cr and charge chrome are normally produced by the conventional smelting process utilizing carbo-thermic reduction of chromite ore (consisting oxides of
Contact
High Power Rectifiers for DC Arc Furnaces
网页As a result, the DC arc furnace has now also emerged as the most efficient technology for ex-tracting ferrochrome, titanium oxide, cobalt, platinum and ferronickel, as well as for
Contact
DC ARC FURNACES PAST, PRESENT, AND FUTURE
网页Tetronics testwork, and the scale-up potential of ASEA’s DC arc furnace. This is where the application of pre-baked graphite electrodes in a DC arc furnace came about. Mintek
Contact
Simulation of ferro-alloy smelting in DC arc furnaces
网页2016年12月1日Based on the successful operation of the DC arc furnace for chromite smelting at Krugersdorp, Middelburg Ferrochrome (now part of Samancor Chrome) built a 44 MW (62 MVA) DC arc furnace, the largest of its type, in Middelburg in 1997.
Contact
(PDF) DC furnace smelting of ilmenite and
网页2019年8月6日The DC furnace for ilmenite smelting is now an established process technology with five furnaces in operation. The first furnace started up in 1995, the most recent one in 2009. Chromite...
Contact
Technology Innovations in the Smelting of Chromite Ore
网页Out of the four primary technologies (Conventional smelting process, Outokumpu process, DC arc route, and Premus process), Premus process is the lowest-cost and most energy-efficient ferrochrome technology. The technology uses low cost reductant material (anthracite) for preheating chromite pellets.
Contact
(PDF) DC Furnace Smelting of Ilmenite and Chromite:
网页2019年8月5日DC Furnace Smelting of Ilmenite and Chromite: Future Opportunities in a Region of Great Potential Authors: Harmen Oterdoom SMS group GmbH Johan Zietsman Ex Mente Technologies Discover the...
Contact
Arc Detection in DC Arc Furnaces SpringerLink
网页Abstract. A direct-current (DC) plasma arc furnace is a type of electric furnace used for metallurgical operations. The successful operation of DC furnaces depends to a large extent on gaining a fundamental understanding of the arc phenomenon itself, and ensuring its presence in the furnace at all times. A method for detection of the presence
Contact
LOW COST FERROALLOY EXTRACTION IN DC-ARC
网页Ferrochrome production by DC-arc furnace comprises the following plant or processes: Raw material receiving and storage Ore drying Batch preparation Furnace feeding on a feed/power proportion basis Smelting Alloy and slag tapping Offgas cleaning and furnace pressure control Effluent treatment Cooling water plant
Contact
High Power Rectifiers for DC Arc Furnaces
网页As a result, the DC arc furnace has now also emerged as the most efficient technology for ex-tracting ferrochrome, titanium oxide, cobalt, platinum and ferronickel, as well as for processing stainless steel dust. ABB the No. 1 rectifier
Contact
Production of Ferro-Chrome IspatGuru
网页2018年7月10日Some of the characteristics of DC arc furnace operation are (i) use of fine ores without agglomeration, (ii) use of cheaper reductants and hence there is greater choice of reductants, (iii) higher recoveries of Cr, (iv) deliberate changes in the charge composition are reflected rapidly in the slag or ferro-alloy, and (v) closed top operation
Contact
Submerged Arc Furnace an overview ScienceDirect
网页The general operation of these facilities is roughly the same, though some elements of the equipment or operation may vary. Iron Dynamics, in Butler, Indiana, started with green pellets made from coal and iron ore fines, with the resultant hot DRI available for smelting in a submerged arc furnace, or hot briquetted for use in an EAF [59].
Contact
PRODUCTION, CHARACTERISTICS AND USE OF
网页Chrome and iron oxides are reduced into metal in the submerged electrical arc furnaces by using metallur-gical coke. Simultaneously part of silica is also reduced. Produced metal is classified as “charge chrome” quality, which includes 53 % Cr, 7 % C and 4-5 % Si. Typical reduction reactions in the ferrochrome furnace can be seen in Figure 2.
Contact
High Carbon Ferrochrome Technology ScienceDirect
网页2013年1月1日The use of low carbon ferrochrome and ferrosilicochrome for chromium addition was common practice until the 1960s, the vacuum argon decarburization (VOD) process being commercialized in 1964 and the AOD process in 1968. In 1972, the Creusot-Loire Uddeholm (CLU) refining process was developed.
Contact
(PDF) DC furnace smelting of ilmenite and chromite:
网页2019年8月6日The DC furnace for ilmenite smelting is now an established process technology with five furnaces in operation. The first furnace started up in 1995, the most recent one in 2009. Chromite...
Contact
Arc Detection in DC Arc Furnaces SpringerLink
网页A direct-current (DC) plasma arc furnace is a type of electric furnace used for metallurgical operations. The successful operation of DC furnaces depends to a large extent on gaining a fundamental understanding of the arc phenomenon itself, and ensuring its presence in the furnace at all times.
Contact
The dual-electrode DC arc furnace– Mintek
网页reduced. The brush arc mode retains many of the advantages of DC open-arc open-bath operation, and has been successfully implemented on industrial ferroalloy AC furnaces5,6. It is therefore of some interest to examine the effect of reducing the arc length on the behaviour of the dual-electrode DC furnace. It should be noted that operating under
Contact
Electromagnetic Mixing of the Liquid Metal in DC Arc
网页2019年2月18日Abstract The methods of organization of technologically efficient electromagnetic mixing of a liquid metal (EMLM) in dc electric arc furnaces are considered. The relations between the melt velocity in a furnace bath, the design parameters, and the electric parameters are found for a series of electric arc furnaces with a capacity of
Contact
High Power Rectifiers for DC Arc Furnaces
网页As a result, the DC arc furnace has now also emerged as the most efficient technology for ex-tracting ferrochrome, titanium oxide, cobalt, platinum and ferronickel, as well as for processing stainless steel dust. ABB the No. 1 rectifier
Contact
Submerged Arc Furnace an overview ScienceDirect
网页The general operation of these facilities is roughly the same, though some elements of the equipment or operation may vary. Iron Dynamics, in Butler, Indiana, started with green pellets made from coal and iron ore fines, with the resultant hot DRI available for smelting in a submerged arc furnace, or hot briquetted for use in an EAF [59].
Contact
PRODUCTION, CHARACTERISTICS AND USE OF
网页Chrome and iron oxides are reduced into metal in the submerged electrical arc furnaces by using metallur-gical coke. Simultaneously part of silica is also reduced. Produced metal is classified as “charge chrome” quality, which includes 53 % Cr, 7 % C and 4-5 % Si. Typical reduction reactions in the ferrochrome furnace can be seen in Figure 2.
Contact
DC ARC FURNACE MODELLING FOR POWER QUALITY
网页Various strategy of controls for the ac-dc converters in dc furnace applications have been presented in the past [4]. The main power quality indices regarding harmonics and flicker levels are reported in the stone with reference to IEEE standards. 2. DC arc furnace model The ac-dc static conversion system is realized with a full controlled Graetz
Contact
Cooling System to DC-ARC Furnace Production of
网页Operation at power levels of 25-30 MW was accomplished between 25 July 2001 and 17 January 2002. Initial furnace operations resulted in very rapid refractory loss in the slag and metal taphole zones and a refractory tear-out and furnace reline was carried out. In the last month of operation the furnace was simply used to melt alloy reverts.
Contact