L-Ton Cupola operation with Oxygenated Air Blast

Abstract

This work was carried out in connection with Laboratory studies of nodular graphite iron. The object of the above investigation was to study the effort of oxygen-enriched blast on the temperature and composition of the iron melted in the Laboratory L-ton cupola, using pig iron and steel scrap (25%)charge. A high running temperature is essential for reason when making iron to be treated with magnesium alloys for nodularising the graphites. (i)To melt the steel scrap added to control the disadvantages phosphorous content of Indian pig iron. (ii) For nodularising the melt efficiently and producing a sound casting, it is essential to attain a tapping temperature of 1400 to 1450 deg.c. Efforts were made to find out the maximum temperature that could be obtained by employing an air blast oxygenated to the level of 25% oxygen by volume.