RU1794095C - Method of pig-and-scrap process of steel melting in open-hearth furnace - Google Patents
Method of pig-and-scrap process of steel melting in open-hearth furnaceInfo
- Publication number
- RU1794095C RU1794095C SU914920343A SU4920343A RU1794095C RU 1794095 C RU1794095 C RU 1794095C SU 914920343 A SU914920343 A SU 914920343A SU 4920343 A SU4920343 A SU 4920343A RU 1794095 C RU1794095 C RU 1794095C
- Authority
- RU
- Russia
- Prior art keywords
- iron
- open
- hearth furnace
- steelmaking
- scrap
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 12
- 238000002844 melting Methods 0.000 title claims description 9
- 230000008018 melting Effects 0.000 title claims description 9
- 229910000831 Steel Inorganic materials 0.000 title abstract description 8
- 239000010959 steel Substances 0.000 title abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052742 iron Inorganic materials 0.000 claims abstract description 13
- 239000003923 scrap metal Substances 0.000 claims abstract description 10
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 7
- 230000004907 flux Effects 0.000 claims abstract description 7
- 239000004571 lime Substances 0.000 claims abstract description 7
- 238000009628 steelmaking Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 3
- 239000011575 calcium Substances 0.000 claims abstract description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052710 silicon Inorganic materials 0.000 claims abstract 2
- 239000010703 silicon Substances 0.000 claims abstract 2
- 239000007787 solid Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture Of Iron (AREA)
Abstract
Использование: в черной металлургии. Сущность изобретени : в мартеновскую печь загружают шихту дл выплавки стали, дополнительно содержащую комплексный углеродистый железофлюс (КУЖФ), при следующем соотношении компонентов, мас.%: железофлюс 2-7; сталеплавильна известь 3-5; металлический лом 66-68; чугун остальное . Нагрев шихты в мартеновской печи осуществл ют со скоростью 20-80 градусов в минуту. КУЖФ содержит углерод и оксиды кремни , железа и кальци ,Usage: in the steel industry. SUMMARY OF THE INVENTION: A charge for steelmaking, additionally containing complex carbonaceous iron flux (KUZHF), is loaded into an open-hearth furnace in the following ratio, wt.%: Iron flux 2-7; steelmaking lime 3-5; scrap metal 66-68; cast iron the rest. The mixture is heated in an open-hearth furnace at a speed of 20-80 degrees per minute. ALCF contains carbon and oxides of silicon, iron and calcium,
Description
Изобретение относитс к металлургии.The invention relates to metallurgy.
Известен способ выплавки стали в мартеновской печи, включающий завалку твердого чугуна, сталеплавильной извести и металлолома, нагрев шихты и ее расплавление .A known method of steelmaking in an open-hearth furnace, including the filling of solid cast iron, steel lime and scrap metal, heating the mixture and its melting.
Недостатком известного способа выплавки стали вл ютс высокие энергозатраты при плавке, а также низкий выход годного металла.A disadvantage of the known method of steel smelting is the high energy consumption during melting, as well as a low yield of metal.
Наиболее близким по технической сущности и достигаемому результату вл етс способ выплавки стали в мартеновской печи скрап-процессом, включающий завалку твердого чугуна, металлолома, сталеплавильной извести, сварочного шлака, их нагрев и расплавление.The closest in technical essence and the achieved result is a method of steel smelting in an open-hearth furnace by a scrap process, including the filling of solid cast iron, scrap metal, steel smelting, welding slag, their heating and melting.
Основным недостатком прототипа вл етс низкий выход годного металла.The main disadvantage of the prototype is its low metal yield.
Целью изобретени вл етс повышение выхода годного металла.The aim of the invention is to increase the yield of metal.
Дл этого в способе выплавки стали в мартеновской печи скрап-процессом, включающем завалку твердого чугуна, металлолома/сталеплавильной извести и твердого оксидного материала, их нагрев и расплавление , в качестве твердого оксидного материала используют, содержащий углерод и оксиды кремни , железа, кальци комплексный углеродистый железофлюс при следующем соотношении компонентов в шихте, мас.%:For this, in the method of steel smelting in an open-hearth furnace by a scrap process, including the filling of solid cast iron, scrap metal / steel-smelting lime and solid oxide material, their heating and melting, carbon and silicon oxides, iron, calcium complex carbon are used as solid oxide material iron flux in the following ratio of components in the mixture, wt.%:
Комплексный углеродистый железофлюс2-7 Сталеплавильна известь 3-5 Металлолом 66-68 Твердый чугун Остальное при этом их нагревают со скоростью 20- 80°С/мин.Complex carbonaceous iron flux2-7 Steelmaking 3-5 Scrap metal 66-68 Solid cast iron The rest is heated at a rate of 20-80 ° C / min.
Использование комплексного углеродистого железофлюса, например окалины, в совокупности с известью, металлоломом и твердым чугуном при скорости их нагрева 20- 80°С/мин позвол ет улучшить режим шлакообразовани , компенсировать теплозатраты, облегчить процесс расплавлени лома и тем самым увеличить выход годного металла.The use of complex carbonaceous iron flux, for example, dross, together with lime, scrap metal and cast iron at a heating rate of 20-80 ° C / min, improves the mode of slag formation, compensates for heat consumption, facilitates the process of melting the scrap, and thereby increase the yield of metal.
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Пример. Выплавки стали проводили в 100 кг модели мартеновской печи скрап- процессом.Example. Steel smelting was carried out in a 100 kg model of an open-hearth furnace with a scrap process.
Использовали шихту на основе твердого чугуна, извести, металлолома и комплексного углеродистого железофлюса. Железофлюс примен ли в виде безобжиговых окалинофлюсоугольных брикетов на известковой св зке. Завалку шихты производили в следующей последовательности: на подину загружали известь в количестве 4 кг, затем подавали металлолом вUsed a mixture based on solid cast iron, lime, scrap metal and complex carbonaceous iron flux. Zhelezoflyus was used in the form of non-calcined calcin-flux-coal briquettes with a calcareous bond. The charge was charged in the following sequence: 4 kg of lime were loaded onto the bottom, then scrap was fed into
00
количестве 67 кг, сверху на металлолом загружали железофлюс в виде брикетов в количестве 4,5 кг и затем чугун 24,5 кг, Печь отапливалась природным газом при давлении 3 атм. Газ сжигали в токе холодного воздуха, обогащенного кислородом до 35%. Температура расплавлени шихты составл ла 1125°С, а скорость нагрева шихты составл ла 50°С/мин. Продолжительность плавки составл ла 2ч.amount of 67 kg, iron flux in the form of briquettes in the amount of 4.5 kg and then cast iron 24.5 kg were loaded onto the scrap metal from above, the furnace was heated with natural gas at a pressure of 3 atm. The gas was burned in a stream of cold air enriched with oxygen up to 35%. The melting temperature of the charge was 1125 ° C, and the rate of heating of the charge was 50 ° C / min. The melting time was 2 hours.
Выход годного металла по сравнению с прототипом повысилс с 91 до 96%.The yield of metal compared with the prototype increased from 91 to 96%.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU914920343A RU1794095C (en) | 1991-03-19 | 1991-03-19 | Method of pig-and-scrap process of steel melting in open-hearth furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU914920343A RU1794095C (en) | 1991-03-19 | 1991-03-19 | Method of pig-and-scrap process of steel melting in open-hearth furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU1794095C true RU1794095C (en) | 1993-02-07 |
Family
ID=21565706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU914920343A RU1794095C (en) | 1991-03-19 | 1991-03-19 | Method of pig-and-scrap process of steel melting in open-hearth furnace |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU1794095C (en) |
-
1991
- 1991-03-19 RU SU914920343A patent/RU1794095C/en active
Non-Patent Citations (1)
| Title |
|---|
| Технологическа инструкци ТИ-243- М-01-86. Производство трубных марок стали е мартеновском цехе. НТЗ им. К.Либкнехта, Днепропетровск, 1986, Черные металлы, 1969, № 14, с. 23-33. * |
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