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在冲天炉的熔炼过程中,热损失是影响铁水温度的一个重要因素。用低导热系数的硅酸铝耐火纤维(以下简称耐纤)改炉,目的就在于减少热散失,提高热利用率和铁水温度。 我厂于去年六月用耐纤改造了一座1.5吨/时冲天炉,收到了良好的效果。 一、耐纤的选用 我厂改炉用的是规格为600×400×20的耐纤板,比重约为160公斤/米~3,抗拉强度为0.28公斤/厘米~2,热容为一般耐火砖的十分之一,导热系数为一般粘土砖的五分之一.长期使用温度为1000℃,最高使用温度为1300℃,超过此温度使
In the cupola melting process, heat loss is an important factor affecting the hot metal temperature. With low thermal conductivity of aluminum silicate refractory fiber (hereinafter referred to as fiber) furnace, the purpose is to reduce heat loss, improve heat utilization and hot metal temperature. I plant in June last year with a fiber-optic transformation of a 1.5 t / a Cupola, received good results. First, the choice of fiber-resistant furnace used in our factory is the specifications of 600 × 400 × 20 MDF, the proportion of about 160 kg / m ~ 3, the tensile strength of 0.28 kg / cm ~ 2, the heat capacity is generally One-tenth of refractory bricks, the thermal conductivity of one-fifth of the average clay brick. Long-term use temperature of 1000 ℃, the maximum temperature of 1300 ℃, over this temperature