Dc arc furnaces past, present, and future rodney t. Dc arc furnace technology applied to smelting applications. Tenova pyromet is a leading designer and supplier of highcapacity electric submergedarc smelting furnaces and complete smelting plants for the production of ferroalloys, base metals, slag cleaning and alloy refining. Metix is not only responsible for all submergedarc furnace and electric. Jan 22, 2020 as an integrated, multidisciplinary epc engineering, procurement, construction company as well as an original equipment manufacturer oem of submerged arc furnace equipment, we have a unique set of software packages that provide us with highly efficient building information management bim and assist us by design for construction d4c. The second world war saw a steep increase in the use of these furnaces leading to the modern electric arc furnace design operation and working principles. The furnace operation does not require the same control ofthe burden resistivity and gas permeability as is the case with the. Our services also include advising our customers on appropriate taphole equipment and effective taphole management. These improvements to the processing of scrap steel comprised of larger more efficient and higher capacity furnaces. Page iii acknowledgements the realization of this thesis was only possible due to several peoples collaboration, to which. Although information relating to the design and fabrication of an electric arc furnace of such a small size as that fabricated through this research, was not readily available in literature.
In the employ of mannesmann demag submerged arc furnace design department. Detailed designs have been completed for dc furnaces, with capacities of 70 mw and higher. Todays advanced submerged arc furnaces make use of modern software controllers. These are meant for completely sucking the fumes and are suitable for open roofs. Our technology assures the success of our customers in the ferroalloy and nonferrous metal industries.
Basic parameters in the operation and design of submerged arc furnaces. Modelling concept for submerged arc furnaces dadan darmana 1, jan e. We supply solutions for submerged arc furnaces for ferro. Rectangular furnace design and revolutionary dcslag cleaning technology for the pgm industry dr. Rectangular furnace design and revolutionary dcslag. Ac submerged arc furnace saf tenova specialises in submerged arc furnace design and technology for furnace projects that ensures continuous operation and technical feedback. Ore melting furnace submerged arc furnace price, view.
Pdf influence of coke particle size on the electrical. The modular software package includes many ways to analyse chemical. Subsequently, the arc is lengthened by increasing the voltage to maxi mum power. Industrial arc furnaces range in size from small units of approximately one ton capacity used in foundries for producing cast iron products up to about 400 ton units used for secondary steelmaking. Tenova pyromet is a leading designer and supplier of highcapacity electric submergedarc smelting furnaces and complete smelting plants for the production of ferroalloys, base metals, slag cleaning and. An example of a two rectangular furnace inline layout is illustrated in figur e 2.
The closed roof solution enables better production and ensures safer smelting and maintenance. The list of cfd software is long, ranging from commercial. As an integrated, multidisciplinary epc engineering, procurement, construction company as well as an original equipment manufacturer oem of submerged arc furnace equipment, we have a unique set of software packages that provide us with highly efficient building information management bim and assist us by design for construction d4c. Rectangular furnace design and revolutionary dcslag cleaning technology 237 history of the submerged arc furnace for more than 100 years sms demag played a significant role in the development of the submerged arc furnace and electric smelter technology. The multiphase flow model predicts how the gas pressure variations inside the furnace crater zone may effect phenomena like the gas flow pattern inside different zones of the charge materials inside the furnace, the metal tapping flow rate, and the gas blow out from the furnace tap hole. Submerged arc furnace ferroalloy our international experts are passionate about electric smelters and submergedarc furnaces for the production of ferroalloys, silicon, nonferrous metals, and minerals. Computational modelling of submergedarc furnace burden behaviour. A typical submerged electric arc furnace design is depicted in figure 12. The following features of our furnace design are implemented to improve the silicon recovery. Using nonpressurized, nonevaporative watercooling, systems spraycooled offers a complete line of electric arc furnace eaf, ladle metallurgical furnace lmf, basic oxygen furnace bof, submerged arc furnace, post combustion, and dust evacuation system components. Demag, for the last two centuries a major supplier for the iron and steel industry, started with the construction of the first submerged arc furnace in 1906. Design and prototype development of a minielectric arc furnace.
Ning xin, yang binfeng, zheng yanling, zhang sujun, ning lipu henan institute of science and technology, xinxiang, china abstract. The nomenclature submerged means that the furnaces electrodes are buried deep in the furnace burden. Sms demags key competence is the mid size and large scale rectangular furnaces. Compared with induction furnace, the submerged arc furnace is mainly used for producing ferroalloy including ferrotungsten, high carbonferromanganese, high carbon silicon iron, highcarbon cr, nickel iron alloy and silicon, calcium carbide, corundum, yellow phosphorous, etc. Tenova pyromet is a world leading company in the design and supply of direct current dc furnaces for the production of ferroalloys. Development in the design and t construction of dc arc. In case of the submerged arc furnace saf, ore and reducing agent are fed to the furnace continuously from the top so that the electrodes are buried in the mix and the arc is submerged. High productivity low production cost reliable operation low maintenance 4 2 1 8 7 2 5 6 3 power conducting arms. A wide variety of submerged arc furnace options are available to you, there are 393 suppliers who sells submerged arc furnace on, mainly located in asia. This increases tenova s leading edge technology and depth of experience by fulfilling our passion for continuous improvement and providing the best available practice to customers. Our plants are characterized by stateoftheart design and highend manufacture. The unique design features a segmented heat shield with a quick release mechanism. Jul 15, 2014 electric arc furnaces have been used for many years both for the melting of scrap iron open arc furnaces and for reduction processes submerged arc furnaces.
The successful operation of a submerged arc furnace depends on a number of key factors, such as the accuracy of furnace sizing, the proper selection of electric parameters and the implementation of sound technological solutions. Power vs current characteristic curves for a 45mw saf at wonderkop plant in. An electric arc furnace eaf is a furnace that heats charged material by means of an electric arc. The circulardesign saf generally used for ferroalloys smelting uses three. According to the difference of the raw material composition, finished product components, electric furnace capacity and etc. An electrode controller for submerged arc furnaces. An arc heating furnace in which the arcs may be completely submerged under the charge or in the molten bath under the charge explanation of submerged arc furnace. Submerged electric arc furnace major categories and application. The arc furnace smelting production process has characters of multivariables coupling, nonlinearity, strong lag, and so on.
Submerged arc furnaces, ferro alloys, nonferrous, copper, slag cleaning, pgm, rectangular furnace, dctechnology. The openbath operation and control philosophy of a dc furnace permits a rapid response to operational changes and fast, consistent control of product quality. Electric arc furnace design operation and working principle. Todays advanced submerged arc furnaces make use of software controllers. Along the years 2005 and 2006 we conducted tests in submerged arc furnaces aiming to define the correlation between the furnace geometry and the ideal electrical parameters of operation v and i. A new type of automatic electrode controller for submergedarc furnaces has been developed by the national institute for metallurgy nim, in response to the need for some means of overcoming the problems that are experienced on large submerged arc turnaces. Process modeling and optimization of a submerged arc furnace for phosphorus production article pdf available in metallurgical and materials transactions b 415. Also, we design composite electrode system to meet challanges of modern production. Submerged arc furnaces are mainly used for the production of ferroalloys. The electrode control is integrated in the plant automation system. Sms siemag submergedarcfurnaces and electric smelters 10 saf and electric smelter design highlights electrode column systems the new generation of the electrode column guarantees enhanced stability of the hotside components at minimized electrical losses.
Modeling of tapping processes in submerged arc furnaces core. Process modeling and optimization of a submerged arc furnace. A new type of automatic electrode controller for submerged arc furnaces has been developed by the national institute for metallurgy nim, in response to the need for some means of overcoming the problems that are experienced on large submerged arc turnaces. Metix is not only responsible for all submerged arc furnace and electric smelter projects in the southern african region, but also supplies feed material preheating systems as well as pellet and sinter plants. Submergedarc furnace article about submergedarc furnace. Olsen 1, kai tang 2 and eli ringdalen 2 1 sintef materials and chemistry, dept.
Rolf degel, till schreiter, hartmut schmieden sms demag keywords. The interior of the shell is lined with 2 or more layers of carbon blocks. Who we are headquartered in pittsburgh, pa, tenova inc. Hans chrc andersen elkemspigerverket as, engineering division oslo, norway abstract the paper describes the pattern of the conventional submerged are pig iron furnace and the influence ana consequences of introducing preheated and prer educed charge.
A further attribute of a dc arc furnace is the use. The submerged arc furnace for phosphorus production is a particular subtype of electric arc furnace used to produce phosphorus and other products. Sms demag electric arc furnaces design features 4 sms demag electric arc furnaces are known worldwide for their availability and robustness. Most of the reduction reactions taking place in the submerged arc furnace are highly endothermic and are listed in table 1 along with standard gibbs free energies as a function of temperature 11.
These three types are the open, the semiclosed, and the totally closed furnace. The design of a submerged arc furnace depends on its application. Design and application of submerged arc furnacechinese. A study of ferroalloy furnace product flexibility background and introduction there are three basic types of electric arc ferroalloy furnaces with respect to the design and operation of the furnace offgas system. The nomenclature submerged means that the furnace s electrodes are buried deep in the furnace burden. Submerged arc furnace will be mainly applied for reduction of metallurgical ore to produce the fesi, femg, fecr, ferrotungsten, simg and titanium slag alloy, which will be the important material for metallurgical and chemical industries. Our furnace design reflects constant improvements and responds to our customers demands. The submergedarc furnace for phosphorus production is a particular subtype of electric arc furnace used to produce phosphorus and other products. Paul wurth provides support with refractory design and tappingstoking equipment. The objective of this research work is to design and develop an electric arc furnace for melting steelcast iron scraps using locally available materials.
Electric arc furnace an overview sciencedirect topics. The submerged arc furnace saf can be applied for the smelting of ferroalloy like silicocalcium, industrial silicon, silicochronium, silicomanganese,ferro. References from all over the world demonstrate the economic success which is achieved through stable and safe. Our design of submerged arc furnaces is such that, customer can produce several ferro alloys, with adjustment in design parameters. High durability under unfavorable conditions, low maintenance and easy. Modelling and control of an electrode system for a threephase electric arc furnace by mariuspeens. The arc is resistive, so current has the same phase of the arc voltage. Bernd friedrich1, michael kalisch2, david friedmann1, rolf degel2. In the production of high carbon ferromanganese hcfemn in a submerged arc furnace, a coke enriched area is present around and below the electrode tip. Fluent has standard physical models and the solver to solve most of the required.
Submerged arc furnace xian hani metallurgy equipment co. Submergedarc furnaces safs are used extensively in many ore smelting. Review on modeling and simulation of the electric arc furnace eaf. Modelling and control of an electrode system for a three. A reduction reaction takes place near the tip of the electrodes to facilitate. Water leakages detection for submerged arc furnaces. The opensource liggghts software was used to implement the. Filtering for submerged arc furnace for silicon metal using gore filter bags gore.
Tenova specialises in submerged arc furnace design and technology for furnace projects that ensures continuous operation and technical feedback. Electric arc furnace eaf is more popular due to good quality product of alloy steels. Multilayer simulation of heat flow in a submerged arc furnace. Together with using the best quality taphole clay, these are key factors in obtaining excellent taphole performance. The hardware system design of autocontrol system for submerged arc furnace based on plc. I am not sure if that is what you really are interested to know, but it may be useful. During the past century, the submerged arc furnace has. Exporter of elecric arc furnace eaf, ladle refining furnace lrf,vacuum degassing plant vd, vacuum induction melting vim, induction furnaces if, submerged arc furnace saf plant technology on turnkey cuttingedge technology from vmspl india. The shown unit illustrates the world lar gest submer ged arc furnace which had been. In case of the submerged arc furnace saf, ore and reducing agent are.
Dec 06, 2015 the submerged arc furnace saf can be applied for the smelting of ferroalloy like silicocalcium, industrial silicon, silicochronium, silicomanganese,ferro. Rectangular furnace design and revolutionary dcslag cleaning. Design initial controller verification real world mathematical world. Design and prototype development of a minielectric arc. Design of day bins and furnace bins to avoid segregation rotating charging tubes rotating furnace body. Respectively granulated raw materials are charged into the furnace from the top, in the form of the mixture batch consisting. X is the circuit reactance, v is the voltage without load, va is the arc voltage and i is the current. Electric submerged arc furnace means any furnace wherein electrical energy is converted to heat energy by transmission of current between electrodes partially submerged in the furnace charge. We are providing our services in the field of controlling pollution by offering a world class product named submerged arc furnace. Electric arc furnaces have been used for many years both for the melting of scrap iron open arc furnaces and for reduction processes submerged arc furnaces. Sms demag submergedarc furnace plants saf design highlights 10 electrode column sms demags electrode column has been known for decades for its reliable and good performance in all submergedarc furnace applications. Most modern furnaces are equipped with watercooled panels in the upper half of the sidewall, rather than refractories, which allow for longer arcs and higher energy input to the furnace. These are high performing industrial furnace that is designed in accordance with the clients specifications and. The heat shield protects the internal electrode components from the hot furnace environment.
Project approach the following serves as a brief summary of the approach followed for recent successful dc arc furnace projects. A new generation of sms demags electrode column ensures safe, maintenancefriendly operation at minimized energy. The frequent bag failures stopped and the inside of the baghouse is much cleaner. Gray instruments division, national institute for metallurgy, randburg, south africa abstract. Plant design all design work for the relevant plant and equipment were done on with the latest 3dimensional parametric design tools.
1595 1528 1567 303 1234 1062 870 1348 740 96 627 534 678 579 196 821 21 1664 574 111 1308 369 409 1557 1152 813 1199 1389 630 704 522 425 244 308 705