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提出了改进前人所提出的测定含CaF_2固态渣导热系数的方法,通过测定有渣壳和无渣壳的铜-氧化铝水冷套管中热流值,即可求出渣壳的导热系数,测定了ANF—6(70％CaF_2—30％Al_2O_3)与L_4(15％CaF_2—50％Al_2O_3—30％CaO—5％MgO)渣的导热系数,其温度范围分别为637～1273℃及760～1188℃,其导热系数均随温度升高而增大,并求出了两种渣导热系数与温度的关系式,在1000℃下L_4渣的导热系数较ANF-6渣少50％,此法简便可靠。
A new method to improve the thermal conductivity of CaF2 solid slag was proposed. The thermal conductivity of the slag shell can be calculated by measuring the heat flow in the copper-alumina water-cooled casing with and without slag. The thermal conductivities of ANF-6 (70% CaF_2-30% Al_2O_3) and L_4 (15% CaF_2-50% Al_2O_3-30% CaO-5% MgO) slag ranged from 637 to 1273 ℃ and from 760 to 1188, respectively ℃, the thermal conductivity increases with the increase of temperature, and the relationship between the thermal conductivity of two kinds of slag and the temperature is obtained. The thermal conductivity of L_4 slag is 50% less than that of ANF-6 at 1000 ℃, which is simple and convenient reliable.