The heat flux densities through thin layers of casting slag havebeen measured with a soft cooling heat flux probe which made smoothprobe/slag interfaces. Thus the contact resistance was avoided. The evaluatedeffective thermal conductivities were applied, together with the data on thecontact resistance, to compute the "system conductivities" existing in thecontinuous casting "system" water cooled copper/slag/strand. The refractiveindex and absorption spectrum were measured and used to deduce functions forthe radiative and conductive (phonon) conductivities. Although precise valuescould not be obtained, due to the many assumptions involved, the data indicatethat the conductive conductivity does not change drastically at high temperaturesand on melting.
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