SU399536A1 - METHOD OF MANUFACTURING STEEL IN OXYGEN CONVERTER - Google Patents
METHOD OF MANUFACTURING STEEL IN OXYGEN CONVERTERInfo
- Publication number
- SU399536A1 SU399536A1 SU1744932A SU1744932A SU399536A1 SU 399536 A1 SU399536 A1 SU 399536A1 SU 1744932 A SU1744932 A SU 1744932A SU 1744932 A SU1744932 A SU 1744932A SU 399536 A1 SU399536 A1 SU 399536A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- slag
- blowing
- steel
- oxygen converter
- manufacturing steel
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title description 3
- 229910052760 oxygen Inorganic materials 0.000 title description 3
- 239000001301 oxygen Substances 0.000 title description 3
- 239000002893 slag Substances 0.000 description 10
- 238000007664 blowing Methods 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 5
- 229910052804 chromium Inorganic materials 0.000 description 5
- 239000011651 chromium Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- NJFMNPFATSYWHB-UHFFFAOYSA-N ac1l9hgr Chemical compound [Fe].[Fe] NJFMNPFATSYWHB-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Description
Изобретение относитс к черной металлургии , в частности к технологии кислородно-конвертерного передела металла.The invention relates to ferrous metallurgy, in particular to the technology of oxygen-converting redistribution of metal.
Известен способ производства стали в кислородных конвертерах путем продувки металла с промежуточным удалением П1лака при интенсивности менее 5 м-з/мин-т, рассредоточением присадок по ходу продувки. Известный способ характеризуетс ухудшением качества металла при производстве стали с содержанием хрома менее 0,15% при содержании хрома в чугуне более 0,5%. При этих услови х образуетс тугоплавкий шлак, привод ш;ий к заметалливанию фурмы, выбросам и повышению содержани фосфора и серы в стали.A known method for the production of steel in oxygen converters by blowing metal with an intermediate removal of Pillac at an intensity of less than 5 mW / min-t, dispersing additives during the blowing process. The known method is characterized by a deterioration in the quality of the metal in the production of steel with a chromium content of less than 0.15% with a chromium content in the iron of more than 0.5%. Under these conditions, refractory slag is formed, leading to the smelting of the tuyere, emissions and an increase in the phosphorus and sulfur contents in the steel.
Цель изобретени - повышение качества низкохромистой стали, выплавл емой и высокохромистого чугуна.The purpose of the invention is to improve the quality of low-chromium steel, smelted and high-chromium iron.
Это достигаетс тем, что продувку металла в первом периоде ведут с поверхностным обдувом и заканчивают первый период при содержании углерода в металле 2-3% и температуре металла 1450-1500°С. Такое ведение процесса приводит к более полному переводу хрома в шлак в первом периоде продувки с одновременным поддержанием высокой активности наведенного шлака, что способствует удалению вредных примесей. .This is achieved by the fact that in the first period the metal blowing is conducted with surface blowing and ends the first period with a carbon content of 2-3% and a metal temperature of 1450-1500 ° C. This process leads to a more complete transfer of chromium to slag in the first period of purging while maintaining high activity of the induced slag, which helps to remove harmful impurities. .
Второй период после удалени шлака ведут по обычно технологии с наведением известково-железистого шлака с основностью не менее 3,0 при использовании плавней дл разжижени шлака в услови х отсутстви в шлаке кремни и марганца. Присадки извести рассредоточивают по ходу продувки в следуюш ,ем соотношении: 30-40% от общего количества - в начале первого периода, 40-60%-после промежуточного удалени шлака и 15-20% -по истечении 2/3 обш,ей продолжительности продувки.The second period after slag removal is usually carried out using guided iron-iron slag with a basicity of at least 3.0, using fluids to liquefy slag in the absence of silicon and manganese in the slag. Lime additives are dispersed along the course of blowing in the following ratio: 30-40% of the total amount - at the beginning of the first period, 40-60% after intermediate slag removal and 15-20% after 2/3 batt, .
Предмет изобретени Subject invention
Способ производства стали в кислородном конвертере из чугуна, содержашего хрома более 0,5%, включаюший продувку в два периода , ведение продувки во втором периоде по обычной технологии и промежуточное удаление шлака при суммарном содержании железа в шлаке 16-24%, отличающийс тем, что, с целью улучшени качества стали с содержанием хрома от следов до 0,15%, продувку металла в первом периоде ведут с поверхностным обдувом п заканчивают первый период при содержании углерода в металле 2-3% и температуре металла 1450-1500°С.The method of steel production in an oxygen converter from cast iron containing more than 0.5% chromium, including blowing in two periods, conducting the blowing in the second period using conventional technology, and intermediate slag removal with a total iron content of slag 16-24%, characterized in that In order to improve the quality of steel with chromium content from traces to 0.15%, metal blowing in the first period is carried out with surface blowing;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1744932A SU399536A1 (en) | 1972-01-28 | 1972-01-28 | METHOD OF MANUFACTURING STEEL IN OXYGEN CONVERTER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1744932A SU399536A1 (en) | 1972-01-28 | 1972-01-28 | METHOD OF MANUFACTURING STEEL IN OXYGEN CONVERTER |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU399536A1 true SU399536A1 (en) | 1973-10-03 |
Family
ID=20502268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1744932A SU399536A1 (en) | 1972-01-28 | 1972-01-28 | METHOD OF MANUFACTURING STEEL IN OXYGEN CONVERTER |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU399536A1 (en) |
-
1972
- 1972-01-28 SU SU1744932A patent/SU399536A1/en active
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