chemical energy. In the above concept, two technologies are worthwhile to mention: Energy optimizing furnace (EOF) and. CONARC (Converter + Arc furnace). CONARC© Furnaces References. Saldanha Steel (PTY) – South Africa. General data: CONARC© size, t. Capacity, 1,, t/year. Start-up, Electric Arc Furnaces. SMS Demag. FURNACE TECHNOLOGIES. SMS Demag – your partner for. FURNACE TECHNOLOGIES. 2. AC EAF. CONARC®.
|Published (Last):||17 February 2005|
|PDF File Size:||4.46 Mb|
|ePub File Size:||4.52 Mb|
|Price:||Free* [*Free Regsitration Required]|
The objective for the development of this process was to utilize the benefits of both the conventional top blown converter steelmaking and electric arc furnace Coharc.
Cold material like scrap or DRI is added to the furnace to utilize this energy and to avoid overheating of the bath. The basic equipment of CONARC process consists of two identical refractory lined furnace shells, one slewable electrode structure with conarf set of electrodes serving both the furnace shells, one electric supply transformer etc. Essar Steel has installed continuous caster of 1. Home Essar Hypermart Login Contact us. All rights reserved Legal furnacs Sitemap Contact us.
In CONARC process, out of two furnace shells, one shell operates in the converter mode using the top lance while the second shell at that time operates in the arc furnace mode.
Essar Group | Steel | Media | Media releases | Essar Steel commissions second Conarc Furnace
The first stage consists of the converter process during which the decarburization of liquid iron is done by blowing oxygen in the liquid iron through the top lance. Depending upon the requirements of the finished products, CONARC process is followed by a ladle furnace or a vacuum degassing unit.
During this phase known as converter phase, the content of carbon, silicon, manganese, and phosphorus in the bath are reduced. Posted by Satyendra on Apr 17, in Technical 1 comment. Charging of cold material also help to protect the furnace shell from overheating.
It will also be one of the few steel facilities which are fully integrated and will produce the entire range of flat products.
CONARC Process for Steelmaking
The basic concept of CONARC process is to carry out decarburization in one shell and electric melting in another vessel. These components are designed as pressure parts for steam generation. In addition, Essar has also invested in various supporting infrastructure at Hazira that include power plants of MW and a all-weather port of 30 MTPA at total investment of over Rs. The second stage is the electric arc process during which the electric energy is conarrc for melting of the solid charge and for superheating of the molten coharc to tapping temperature.
Your email address will not be published.
In the first stage, the waste gas from the CONARC process is led through a boiler system consisting of a swivel type elbow, a post combustion chamber and a hot gas line and cooled to deg C.
North American operations comprise a four million tonne steel plant in Canada, iron ore reserves furnzce two billion tonnes and is currently setting up a six million tonne taconite plant in USA and Trinity Coal that owns six mining complexes in USA that hold an estimated million tonnes of coking and thermal coal. It is the most versatile flat steel producer with integrated facilities from 5-m wide plates, hot rolling, cold rolling, conrc and color coating, pipes with a full distribution business consisting of steel processing, distribution centres and retail outlets under the brand – Essar Hypermart.
The mill is capable of producing high strength steels including Dual Phase steel. Designed by Elegant Themes Furace by WordPress. It operates eight steel processing and distribution centres globally with an aggregate capacity of over 4 million tonnes.
After this the top oxygen lance is brought into position, and the blowing of oxygen is initiated. Option is available for introducing bottom stirring devices integrated to the bottom of each of the furnace shell.
A two stage boiler system is used for the waste heat recovery. Donate Grateful for your donation! Leave a Reply Cancel reply Your email address will not be published.
The other important systems include raw material and flux feeding systems and gas cleaning and energy recovery systems. The process was developed for using any kind coanrc mix of raw materials like hot metal, direct reduced ufrnace DRI and scrap to ensure highest quality requirements for the production of all grades and qualities of steels covering a wide range from carbon steels to stainless steels. The temperature of the bath is then increased to the required value.
These reactions are exothermic since they generate large quantities of heat.
Essar has the largest retail channel through Essar Hypermarts. This energy recovery system on the one hand provides for the required cooling of the gas and on the other hand uses a major portion of the thermal energy for the generation of steam which can be put to further use in the steel plant.
Options are also available to introduce burners and injectors systems in the shell for the injection of fuel, carbon and oxygen as per the process requirements. After completion of the carburization process, the top lance is removed by slewing and electrodes are brought into the operating position. The Conarc Furnace will be fed with inputs from Blast Furnace with a capacity of 1.
After temperature is achieved, the arcing is concluded and the heat is deslagged before the heat is tapped into the teeming ladle. Essar Steel announces commissioning of its second unit of Conarc Furnace with a capacity of 2. Alternatively two stationary top lances, one for each furnace shell for the blowing of oxygen can also be used.
Essar Steel commissions second Conarc Furnace. In the second stage, the waste gas is cooled down to deg C in a vertical pass boiler especially developed for this type of application. The technology of this process is based on the increased use of hot metal in the electric arc furnace and is aimed at optimizing energy recovery and maximizing productivity in such an operation. The CSP is capable of furnsce strips of thickness as low as 0. During this arcing phase, the remaining fyrnace charge material like scrap or DRI is charged into the bath so as to achieve the desired tapping weight of the heat.
With the commissioning of this furnace, Essar Steel has commissioned all steel making units, iron making and rolling units that frnace part of 10 million tonne expansion project barring a Corex unit which is slated for commissioning later this year.
With this the second phase known as arcing phase starts.