Manachуn I. Development of scientific principles and process technology ladle desulphurization of magnesium with high intensity input reagent

The process furnace refining molten iron ladles blowing particulate (granular), magnesium. Development of the basic theoretical positions and development of the technology of injection refining molten iron ladle with dispersed heat and mass transfer in the melt zone, providing a high-intensity magnesium input - up to 250-400 g / s, desulfurization rate - 9% / min or more, the degree of assimilation of magnesium - up to 96%. Modern methods of computational and theoretical analysis, simulation of processes injection refining with the use of computers, physical modeling processes using video, a special method of computer processing and video analytics. Experimental studies were carried out using certified devices. The development of ideas about the formation of prifurmennoy and mass transfer zones in the bucket with cast iron under different conditions and parameters of injection refining its magnesium. The dependence of the oscillation parameters of the surface of the melt is refined in ladle on the parameters of the injection gas. Was further developed method for calculating the penetration of gas-bearing streams are injected into the molten bath. Found new patterns of change in the phase velocity of a magnesium-containing stream at the end of its channel lances into the liquid melt. For the first time implemented sustainable injection of magnesium supplements without razubozhvayuschih through dvuhsoplovye lance with high-intensity magnesium injection (up to 420 g / s) and dispersed putting it into the melt. The first set of reliable conditions for the separation of magnesium-containing stream into two equal deviation from the parameters of the flow from the other of not more than 5%. Worked parameters separatory chamber and its components are incorporated in the structure designed immersion lance through which the injection of magnesium dispersed in the ladle of different sizes with the degree of desulphurization providing up to 98% and the minimum duration of the injection operation of magnesium. Scientific terms and developed a process verified by an experimental-industrial conditions. Implemented: 5 steel mills to ensure the unit capacity - up to 6.5 million tons / year, with a reduction of sulfur in the iron less 0,002% and recommended for implementation on all metkombinat Ukraine. The expected economic effect of implementing development (compared with others) of 3.165 dollars. USA / t of pig iron, at a total annual production of 19.45 million. Tons / year - 61.56 million. Dollars. US / year, the share of the applicant - 1 85 mln. dollars. US / year. Metallurgy.