CONARC Process for Steelmaking Apr17

CONARC Process for Steelmaking...

CONARC Process for Steelmaking CONARC process for steelmaking was developed by Mannesmann Demag Huettentechnik (now it is SMS Siemag). 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 (EAF). The name of the process CONARC sums up the fusion of the two processes (CONverter ARCing). 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 process was developed for using any kind and mix of raw materials like hot metal, direct reduced iron (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. Depending upon the requirements of the finished products, CONARC process is followed by a ladle furnace or a vacuum degassing unit. Major equipment for the CONARC process The basic equipment of CONARC process consists of two identical refractory lined furnace shells, one slewable electrode structure with one set of electrodes serving both the furnace shells, one electric supply (transformer etc.) for both the shells, and one slewable water cooled top oxygen lance system serving both the shells. Alternatively two stationary top lances, one for each furnace shell for the blowing of oxygen can also be used. Option is available for introducing bottom stirring devices integrated to the bottom of each of the furnace shell. 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. The other important systems include raw material and flux feeding systems and gas...