КОНЦЕПЦІЯ ПЕРЕХОДУ ДО МАЛОШЛАКОВОЇ КОНВЕРТЕРНОЇ ТЕХНОЛОГІЇ

The concept introduction low-slag is substantiated converter technology using resource and an energy efficient route «blast furnace – converter with combined purge» in raw material conditions Ukrainian metallurgical industry. Provided technological advantages preliminary refining hot metal in the filler bucket by injection deep into the melt powder mixtures of reagents in the flow gas-carrying through the nozzles submersible rotary lance. For results high-temperature experiments defined rational refinement regimes, type and ratio in mixtures low-cost cheap reagents.The concept is proposed energy efficient training slag cast iron to low slag converter melting through implementation desulfurization, desiliconization and dephosphorization of hot metal in the ladle injection deep into the melt powder mixtures reagents in the stream carrier gas through the nozzles submersible rotary lance.At smelting in Ukraine in accordance with the raw material base pig iron, containing 0,86-1,43% Si, 0,08-0,68% Mn, 0,022-0,065% S, 0,035-0,065% P, at the first stage technological route using elements low-slag technology converter melting it seems actual development energy efficient integrated technology refining hot metal in the ladle with the removal of silicon, sulfur and phosphorus with the use of cheap non-reagents.The use of integrated technology will allow depending on the specific conditions work of metallurgical enterprises and metal assortment to provide: improvement quality and cheapening production of pig iron in blast furnaces, including in transition conditions to injecting coal-pulverized fuel; melting in converters with combined purge for low-slag technology cheaper high quality steel; rational charges of magnesian modifiers for preparation and use the final converter slag for application on lining in order to create a protective.The authors of the work the principle opportunity is shown the use cheap non-deficit fluxes on the basis of lime (CaO) or soda (Na2CO3) as flux for complex refining of hot metal with high oxidation potential and high sulfide and phosphate capacity.Done experimental test a one-step removal method silicon to 0,15-0,20% and phosphorus to ≤0,008-0,010% by purging previously desulphurized hot metal through the submersible rotary lance oxygen jets bearers powder mixtures low-cost cheap reagents.The concept introduction low-slag is substantiated converter technology using resource and an energy efficient route «blast furnace – converter with combined purge» in raw material conditions Ukrainian metallurgical industry. Provided technological advantages preliminary refining hot metal in the filler bucket by injection deep into the melt powder mixtures of reagents in the flow gas-carrying through the nozzles submersible rotary lance. For results high-temperature experiments defined rational refinement regimes, type and ratio in mixtures low-cost cheap reagents.The concept is proposed energy efficient training slag cast iron to low slag converter melting through implementation desulfurization, desiliconization and dephosphorization of hot metal in the ladle injection deep into the melt powder mixtures reagents in the stream carrier gas through the nozzles submersible rotary lance.At smelting in Ukraine in accordance with the raw material base pig iron, containing 0,86-1,43% Si, 0,08-0,68% Mn, 0,022-0,065% S, 0,035-0,065% P, at the first stage technological route using elements low-slag technology converter melting it seems actual development energy efficient integrated technology refining hot metal in the ladle with the removal of silicon, sulfur and phosphorus with the use of cheap non-reagents.The use of integrated technology will allow depending on the specific conditions work of metallurgical enterprises and metal assortment to provide: improvement quality and cheapening production of pig iron in blast furnaces, including in transition conditions to injecting coal-pulverized fuel; melting in converters with combined purge for low-slag technology cheaper high quality steel; rational charges of magnesian modifiers for preparation and use the final converter slag for application on lining in order to create a protective.The authors of the work the principle opportunity is shown the use cheap non-deficit fluxes on the basis of lime (CaO) or soda (Na2CO3) as flux for complex refining of hot metal with high oxidation potential and high sulfide and phosphate capacity.Done experimental test a one-step removal method silicon to 0,15-0,20% and phosphorus to ≤0,008-0,010% by purging previously desulphurized hot metal through the submersible rotary lance oxygen jets bearers powder mixtures low-cost cheap reagents

Організація охолодження засоплових зон наконечників кисневих фурм для верхньої продувки конвертерної ванни

Analysis of efficiency of cooling on the butt end of lance tip with using results of numeral modeling of hydrodynamics of flow of water in oxygen top blown lances different constructions is executed. New technical decisions, directed on improvement of cooling and rising of firmness of lances are developedС использованием результатов численного моделирования гидродинамики течения воды в наконечниках кислородных фурм различных конструкций выполнен анализ эффективности охлаждения засопловых зон торцевой части головок. Разработаны новые технические решения, направленные на улучшение охлаждения и повышение стойкости конвертерных фурмЗ використанням результатів чисельного моделювання гідродинаміки течії води в наконечниках кисневих фурмах різних конструкцій виконаний аналіз ефективності охолодження за соплових зон на торцевій частині головок. Розроблені нові технічні рішення, спрямовані на покращення охолодження та підвищення стійкості конвертерних фур

КОНЦЕПЦІЯ ПЕРЕХОДУ ДО МАЛОШЛАКОВОЇ КОНВЕРТЕРНОЇ ТЕХНОЛОГІЇ

The concept of small-slag converter technology using the resource- and energy-efficient route "blast furnace – converter with combined blowdown" is substantiated. The technological advantages preliminary refining cast iron in the casting ladle are shown by blowing powdered mixtures reagents deep into the melt in the carrier gas stream through the nozzles rotating submerged lance. Based on the results high-temperature experiments, rational regimes of refining, the type and ratio inexpensive cheap reagents in mixtures are determined.Обґрунтовано концепцію впровадження малошлакової конвертерної технології із використанням ресурсо- та енергоефективного маршруту «доменна піч – конвертер з комбінованим продуванням» у сировинних умовах української металургійної галузі. Наведено технологічні переваги попереднього рафінування чавуну у заливальному ковші шляхом вдування углиб розплаву порошкоподібних сумішей реагентів у потоці газу-носія через сопла заглибної обертової фурми. За результатами високотемпературних експериментів визначено раціональні режими рафінування, тип та співвідношення у сумішах недефіцитних дешевих реагентів

КОНЦЕПЦІЯ ПЕРЕХОДУ ДО МАЛОШЛАКОВОЇ КОНВЕРТЕРНОЇ ТЕХНОЛОГІЇ

The concept introduction low-slag is substantiated converter technology using resource and an energy efficient route «blast furnace – converter with combined purge» in raw material conditions Ukrainian metallurgical industry. Provided technological advantages preliminary refining hot metal in the filler bucket by injection deep into the melt powder mixtures of reagents in the flow gas-carrying through the nozzles submersible rotary lance. For results high-temperature experiments defined rational refinement regimes, type and ratio in mixtures low-cost cheap reagents.The concept is proposed energy efficient training slag cast iron to low slag converter melting through implementation desulfurization, desiliconization and dephosphorization of hot metal in the ladle injection deep into the melt powder mixtures reagents in the stream carrier gas through the nozzles submersible rotary lance.At smelting in Ukraine in accordance with the raw material base pig iron, containing 0,86-1,43% Si, 0,08-0,68% Mn, 0,022-0,065% S, 0,035-0,065% P, at the first stage technological route using elements low-slag technology converter melting it seems actual development energy efficient integrated technology refining hot metal in the ladle with the removal of silicon, sulfur and phosphorus with the use of cheap non-reagents.The use of integrated technology will allow depending on the specific conditions work of metallurgical enterprises and metal assortment to provide: improvement quality and cheapening production of pig iron in blast furnaces, including in transition conditions to injecting coal-pulverized fuel; melting in converters with combined purge for low-slag technology cheaper high quality steel; rational charges of magnesian modifiers for preparation and use the final converter slag for application on lining in order to create a protective.The authors of the work the principle opportunity is shown the use cheap non-deficit fluxes on the basis of lime (CaO) or soda (Na2CO3) as flux for complex refining of hot metal with high oxidation potential and high sulfide and phosphate capacity.Done experimental test a one-step removal method silicon to 0,15-0,20% and phosphorus to ≤0,008-0,010% by purging previously desulphurized hot metal through the submersible rotary lance oxygen jets bearers powder mixtures low-cost cheap reagents.The concept introduction low-slag is substantiated converter technology using resource and an energy efficient route «blast furnace – converter with combined purge» in raw material conditions Ukrainian metallurgical industry. Provided technological advantages preliminary refining hot metal in the filler bucket by injection deep into the melt powder mixtures of reagents in the flow gas-carrying through the nozzles submersible rotary lance. For results high-temperature experiments defined rational refinement regimes, type and ratio in mixtures low-cost cheap reagents.The concept is proposed energy efficient training slag cast iron to low slag converter melting through implementation desulfurization, desiliconization and dephosphorization of hot metal in the ladle injection deep into the melt powder mixtures reagents in the stream carrier gas through the nozzles submersible rotary lance.At smelting in Ukraine in accordance with the raw material base pig iron, containing 0,86-1,43% Si, 0,08-0,68% Mn, 0,022-0,065% S, 0,035-0,065% P, at the first stage technological route using elements low-slag technology converter melting it seems actual development energy efficient integrated technology refining hot metal in the ladle with the removal of silicon, sulfur and phosphorus with the use of cheap non-reagents.The use of integrated technology will allow depending on the specific conditions work of metallurgical enterprises and metal assortment to provide: improvement quality and cheapening production of pig iron in blast furnaces, including in transition conditions to injecting coal-pulverized fuel; melting in converters with combined purge for low-slag technology cheaper high quality steel; rational charges of magnesian modifiers for preparation and use the final converter slag for application on lining in order to create a protective.The authors of the work the principle opportunity is shown the use cheap non-deficit fluxes on the basis of lime (CaO) or soda (Na2CO3) as flux for complex refining of hot metal with high oxidation potential and high sulfide and phosphate capacity.Done experimental test a one-step removal method silicon to 0,15-0,20% and phosphorus to ≤0,008-0,010% by purging previously desulphurized hot metal through the submersible rotary lance oxygen jets bearers powder mixtures low-cost cheap reagents