OXIDIZING FURNACE Russian patent published in 1995 - IPC

FIELD: metallurgy. SUBSTANCE: oxidizing furnace has bottom of circular chute which is made splittable with stepped overlapping; sifting section is located in lower portion of the chute and is made in form of two springs secured transversely on the chute; one end of spring is secured rigidly and other end is secured for axial motion; each coil of one spring is connected with respective coil of other spring by means of plate. Discharging branch pipe is sectional in construction and is located under sifting section. EFFECT: enhanced reliability. 6 dwg