The actual production of ferrosilicon is prone to segregation, that is, in the same furnace or in the same form of ingot ferrosilicon, the silicon content is also different, and sometimes even a greater difference, 75 ferrosilicon segregation is a more serious phenomenon. Ferrosilicon ingot upper, lower and around silicon content is higher, in the middle silicon content is lower, about 1 to 3% difference. In order to reduce segregation so that the composition is more homogeneous, 75 ferrosilicon with a depth of less than 100 ml is a shallow ingot with a thickness of no more than 100 mm.
45 Ferrosilicon content is lower, less segregation phenomenon, at the same time it is brittle cracking, if the small ingot mold casting, condensation into pieces, dismantling and storage loss is great. Therefore, 45 ferrosilicon using deep casting molds.