Furnace for non ferrous metal smelting

摘要

An electric kiln melts non-metallic materials e.g. crystalline minerals for the production of crystals. The kiln has an electrical heating element that generates an alternating magnetic field in the molten crystals. The alternating field is generated by alternating current. The alternating magnetic fields generates convection within the molten material, driving more uniform distribution of atomic impurities. The current frequency is in the range 0.1 Hz to 100 Hz and fed to a number of heating elements in defined phase lengths.