卡腰冲天炉是目前我国铸造行业中在现有条件下能获得高温、优质铁水的先进炉型之一,其熔炼指标先进,平均铁水温度(出铁槽)可达1450～1500℃,硅烧损小于15％,锰烧损小于20％,炉渣中氧化铁含量小于8％,故在全国各地都得到广泛的推广应用。由于其炉膛形状、风口结构(卡腰、二排短间距大斜度风口)不同于其他炉型(见图1),如 Card waist cupola is currently casting industry in the existing conditions to obtain high temperature, high-quality hot metal one of the advanced furnace, the melting advanced indicators, the average hot metal temperature (trough) up to 1450 ~ 1500 ℃, silicon burning Less than 15% loss, manganese loss less than 20%, iron oxide content of less than 8%, so throughout the country have been widely promoted. Due to its furnace shape, the structure of the tuyere (card waist, two rows of short-pitch large-angle draft) is different from other furnaces (see Figure 1)