内热式密筋炉胆热风冲天炉，就是将空气经过密筋炉胆预热装置预热，再送入炉内的一种热风冲天炉。由于它能显著提高铁水温度和熔化率，减少硅、锰元素的烧损，降低焦耗，节约能源并减弱铁水的增硫倾向；同时，它还减少风口区的激冷作用，使风口不结渣、炉况稳定，成为我国热风 Heat-type hot-hearth furnace bile hot cupola, is the air through the Qiangdang furnace bile preheating device preheating, and then into the furnace of a hot cupola. Because it can significantly improve the temperature and melting rate of molten iron, reduce the burning of silicon and manganese, reduce the coke consumption, save energy and reduce the hot metal sulfur tendency; the same time, it also reduces the tuyere area chilling effect, Slag, furnace stability, become hot air in our country