Objective The control of gas and materials flow near the walls of the shaft as well as of the hearth to reach low and stable heat losses without building thick accretions on the walls should increase the life of blast furnaces.To be studied are: - mathematical models of heat transfer through the cooled walls; - tests on a 2 dimensional model to investigate the formation of the coke/sinter mixed layer. Tests on a 3 dimensional model of hearth; - tests on blast furnace and sinter probings near the walls for a better understanding of the mixed layer, vertical probings near the walls to relate charging with the heat losses, radioactive tracers in iron and slag to demonstrate the influence of stagnant zones. P2055 Programme(s) ECSC-STEELRES 7C - Medium-term guidelines (ECSC) "technical steel research", 1986-1990 Topic(s) B - Reduction of iron ores Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANÇAISE EU contribution No data Address Voie romaine - bp 320 57214 Maizieres-les-metz cedex France See on map Total cost No data