Production of Lamellar Cast Iron En-Gjl-150 From Local Manganese-Rich Pig Iron by Modification of the Melting Process

Abstract In the present study, a modified duplex melting process was set up so as to be able produce an EN-GJL-150 gray cast iron from local manganese-rich pig iron. A descriptive statistics showed average Mn and Si content in raw material such that: % = 2.457±0.133 0.682±0.088. The demanganization run monitored cascade of two industrial-scale furnaces: rotary kiln electric arc furnace. performed experiments indicated 1) manganese decreased 2.45 0.94 %, 2) oxidation obeys first order kinetic model, 3) Brinell Rockwell hardness’s by 38.83% 27.81% respectively, 4) produced has pearlitic microstructure with small fraction ferrite (1 5%) matrix traces cementite. All results that castings comply standards force for irons, similar ASTM A48 Class 20.