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Information × Registration Number 0209U006002, 0106U001399 , R & D reports Title Development of shlakoobrazuyushih mixtures with the promoted sulfide capacity and effective technology of treatment of high-quality steel by a powder-like wire. popup.stage_title Head Kazachkov Evgeny, Registration Date 13-01-2009 Organization Pryazovskyi State Technical University popup.description2 Оbject of investigation - technological parameters slagforming mixtures (SM) with high sulfide capacities and effective technology of high-quality steel treatment by cored wire.(CW) Рurpose of work - development of new effective composition of SM with high sulfide capacities for secondary treatment of low-alloy steel and optimization regime introducing of CW in metal of steel-pouring ladle.Development of new compositions of SM for feeding in krystallyzer of CCM. Research methods - a thermodynamics analysis, mathematical modeling of processes, statistical analysis of industrial heats.Research results - accomplish the theoretical analysis the process of steel out-of-furnace desulphurization by SM, which contains a lime, alumina, fluor-spar and soda ash. The calculations of sulfide capacity SM for different composition are done with the use of values optical basicity components of SM. It is shown that optimum composition of SM answers the system of CaO-Al2О3-CaF2-Na2O with maintenance of CaF2 and Na2Owithin the limits of 8-10%. The thermodynamics analysis of processes of deoxidation and desulphurization of liquid steel a calcium is executed. Optimum composition of filler of CW is set. The rational mode of introducing CW into metal of steel-pouring ladle is developed. For diminishing formation of longitudinal cracks on the surface of slab, an admixture of "polymer-forming" oxides, such as Na2O, to SM was offered. It is suggested to use not mechanical mixing, but previous melting of mix components with next their growing. Product Description popup.authors popup.nrat_date 2020-04-02 Close