Selection of rational compositions of mould flux for slab curve continuous casting machine

There are a great variety of mould fluxes, differing in chemical composition and properties. The thermal work of the crystallizer and the quality of steel continuous castings depends from the correct operation of mould fluxes. The choice of mould flux with optimal properties allows to achieve maximum results in the quality of finished products and largely depends on the correct selection of the chemical composition of the mixture, taking into account the range, productivity and conditions of the enterprise. The production data of the 22 most commonly used mixtures of different manufacturers, such as Stollberg, Intocast, etc., were analyzed to develop recommendations for selecting rational mould flux formulations. Based on this analysis, the array of selected mixtures was grouped into 12 groups under serial numbers and recommendations have been worked out on the use of slag-forming mix tures of a rational composition that can be used to develop technological regimes for pouring different groups of steels onto slab curved machines continuous casting of this type. For the purpose of selecting rational SCO structures, information on their use on curved slab CCM in PJSC NLMK, PJSC Severstal, PJSC MMK, and Ural Steel JSC was analyzed. Based on the study of the experience of these enterprises and the literature data, as well as recommendations on the selection of rational compositions of the SCO on slab curved caster, which can be used in the development of technological modes of casting steel.