Savenkov Y. Improvement of integrated scheme of the resource-saving technologies for fire-refined copper producing and casting

Object - the solidification processes of the fire-refined copper in the mold SCCM. Purpose - theoretical grounds for choosing rational parameters of mold taper and oscillation and improved process technologies semicontinuous casting fire-refined copper, which allowed to improve the ingots quality, to improve conditions their formation and provide energy-saving effect in obtaining products. Research methods and equipment - laboratory studies of viscosity, surface tension and electrical resistivity of fire-refin copper, the mathematical modeling of casting and solidification of ingot using a computer, the methods of mathematical statistics for processing of the results of the experiment, methods of ingots producing at SCCM. Theoretical and practical results - solved an actual scientific and technical of theoretical grounds for choosing rational parameters of mold taper and oscillation and improved process technologies semicontinuous casting fire-refined copper, which allowed to improve the ingots quality (reducing the number of longitudinal and transverse cracks, reduce the depth of oscillation marks and ingot gasing), to improve conditions their formation and provide energy-saving effect in obtaining products. Novelty: the dependence of viscosity of fire-refined copper melt from the chemical composition and temperature is received for the first time; the influence of surface tension of molten fire-refined copper at the mechanism of forming the oscillation marks at the surface of semicontinuous copper ingots is received; further developed ideas about the mechanism of the influence of mold taper on the cracking of copper ingots. The degree of implementation - implemented the recommendations in a casting-rolling mill of JSC "Artemovsky plant for processing non-ferrous metals" for mixers SCCM №1 and №2. Area of use - metallurgy.