RU2001120C1 - Method of melting steel in arc furnaces - Google Patents
Method of melting steel in arc furnacesInfo
- Publication number
- RU2001120C1 RU2001120C1 SU925024943A SU5024943A RU2001120C1 RU 2001120 C1 RU2001120 C1 RU 2001120C1 SU 925024943 A SU925024943 A SU 925024943A SU 5024943 A SU5024943 A SU 5024943A RU 2001120 C1 RU2001120 C1 RU 2001120C1
- Authority
- RU
- Russia
- Prior art keywords
- arc furnaces
- melting
- melting steel
- metal
- slag
- Prior art date
Links
- 238000002844 melting Methods 0.000 title description 7
- 230000008018 melting Effects 0.000 title description 7
- 238000000034 method Methods 0.000 title description 4
- 229910000831 Steel Inorganic materials 0.000 title description 3
- 239000010959 steel Substances 0.000 title description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000002893 slag Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000155 melt Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000008188 pellet Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010273 cold forging Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 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
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
плав, который дополнительно насыщаетс азотом, кроме того увеличиваем врем плавлени окатышей.a melt which is additionally saturated with nitrogen; in addition, we increase the melting time of the pellets.
Высота сло пенистого шлака должна быть такой, чтобы закрыть длинные дуги и не допустить поглощение расплавом атмосферного азота. В случае, если высота пенистого шлака будет менее 1,10 по вл етс возможность насыщени расплава азотом, более 1,45 приводит к спуску самотеком больших количеств шлака и. как следствие, выноса нерасплавленных металлизированных окатышей.The height of the foamy slag layer should be such as to close long arcs and prevent the melt from absorbing atmospheric nitrogen. If the height of the foamy slag is less than 1.10, the melt can be saturated with nitrogen, more than 1.45 leads to the gravity descent of large quantities of slag and. as a result, the removal of unmelted metallized pellets.
Врем наведени пенистых шдаков выбрано на основе практических данных, дающих наиболее эффективные результаты. Если наводить пенистый шлак позже 0,75 времени плавки, то это не эффективно так как по вл етс возможность дл насыщени расплава азотом. Если же наводить пенистый шлак ранее, чем 0,90 времени плавки, то в этот период плавки шлакообра- зующие скапливаютс , что приводит к нарушению технологического процесса, так как температура металла снижаетс и не обеспечивает нормальные услови дл создани эффективного пенистого шлака.The foamy scuffing time has been selected based on practical data giving the most effective results. If foamy slag is induced after 0.75 melting times, this is not effective since it is possible to saturate the melt with nitrogen. If foamy slag is induced earlier than 0.90 of the melting time, during this melting period the slag-forming substances accumulate, which leads to disruption of the technological process, since the metal temperature decreases and does not provide normal conditions for creating effective foamy slag.
Таким образом, реализаци предложенных технологических приемов плавки позволит резко увеличить пластичность стали и повысить выход годного металла при бездефектной деформации стандартного образца на 80 - 90% его первоначальной пысоты.Thus, the implementation of the proposed technological methods of smelting will dramatically increase the ductility of steel and increase the yield of metal with defect-free deformation of the standard sample by 80 - 90% of its initial height.
Пример осуществлени способа. В 100 т-ю дуговую печь на болото загрузили 0,5An example of the method. In the 100th arc furnace, 0.5
т кокса, 1.5 т извести и 60 т скрапа. Затем включили печь на расплавление на 15 ступень По израсходовании 10 тыс.квт.ч.электроэнергии печь переключили на 19tons of coke, 1.5 tons of lime and 60 tons of scrap. Then the furnace was turned on for melting to the 15th stage. After using up 10 thousand kWh of electricity, the furnace was switched to 19
ступень, а через 2 мин на 22 ступень и начали подавать кислород с расходом 500м /час. Одновременно включали газокислородные горелки на 12 мин, Затем по мере накоплени жидкого металла расходstage, and after 2 minutes to the 22nd stage, oxygen began to be supplied at a flow rate of 500m / h. At the same time, oxy-fuel burners were turned on for 12 min. Then, as liquid metal accumulated, the flow rate
0 кислорода увеличили до 1000 м /час. По расплавлении 75% скрапа начала подавать металлизованные окатыши. Всего присадили 50 т. Скорость подачи измен ли от 10 до 80 т/час. Температуру металла поддержива5 ли в пределах 1600 - 1620°С. При проплав- лении 75% скрапа наводили пенистый шлак присадками извести, кокса, плавикового шпата. Высоту пенистого шлака поддерживали на уровне 1,10 - 1.45 длины дуги в течение 0,75 - 0,90 времени плавки. При достижении содержани углерода в расплаве 0,20% кислород отключали, металл нагревали до 1660°С, отбирали пробу на химанализ металла и газа и металл выпуска5 ли в ковш. Анализ проб) показал, что суммарное содержание на выпуске хрома, никел , меди и мышь ка составило 0,20%, содержание азота - 0.004%. Были проведены эксперименты с использованием значе0 ний параметров и по прототипу. Результаты экспериментов приведены в таблицу. (56) Разработка и внедрение технологии производства стали дл холодной объемной штамповки с использованием металлизо5 ванных окатышей, Бюллетень ИТИ 4М, N 10. 1990.0 oxygen increased to 1000 m / h. Upon melting, 75% of the scrap began to feed metallized pellets. A total of 50 tons was assigned. The feed rate was varied from 10 to 80 tons / hour. The metal temperature was maintained5 in the range 1600 - 1620 ° С. When 75% of the scrap was smelted, foamy slag was imposed with additives of lime, coke, and fluorspar. The height of the foamy slag was maintained at a level of 1.10 - 1.45 arc lengths for 0.75 - 0.90 smelting times. When the carbon content in the melt reached 0.20%, oxygen was turned off, the metal was heated to 1660 ° C, a sample was taken for the chemical analysis of metal and gas, and the metal was discharged into a ladle. Analysis of the samples) showed that the total content of chromium, nickel, copper, and arsenic at the outlet was 0.20%, and the nitrogen content was 0.004%. Experiments were carried out using the values of the parameters and the prototype. The experimental results are shown in the table. (56) Development and implementation of a technology for the production of steel for cold forging using metallized pellets, ITI Bulletin 4M, N 10. 1990.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU925024943A RU2001120C1 (en) | 1992-01-31 | 1992-01-31 | Method of melting steel in arc furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU925024943A RU2001120C1 (en) | 1992-01-31 | 1992-01-31 | Method of melting steel in arc furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2001120C1 true RU2001120C1 (en) | 1993-10-15 |
Family
ID=21595712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU925024943A RU2001120C1 (en) | 1992-01-31 | 1992-01-31 | Method of melting steel in arc furnaces |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2001120C1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2107738C1 (en) * | 1996-01-09 | 1998-03-27 | Московский металлургический завод "Серп и молот" | Method of steel melting from metal scrap in electric-arc furnace |
| RU2276693C1 (en) * | 2004-11-12 | 2006-05-20 | Валерий Григорьевич Дюбанов | Process for preparing foamed slag and keeping its density and other properties on the whole surface of melt in bath at melting steel in electric arc furnace |
| RU2821140C1 (en) * | 2023-07-12 | 2024-06-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тверской государственный технический университет" (ТвГТУ) | Method of producing steel in an arc steel-making furnace |
-
1992
- 1992-01-31 RU SU925024943A patent/RU2001120C1/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2107738C1 (en) * | 1996-01-09 | 1998-03-27 | Московский металлургический завод "Серп и молот" | Method of steel melting from metal scrap in electric-arc furnace |
| RU2276693C1 (en) * | 2004-11-12 | 2006-05-20 | Валерий Григорьевич Дюбанов | Process for preparing foamed slag and keeping its density and other properties on the whole surface of melt in bath at melting steel in electric arc furnace |
| RU2821140C1 (en) * | 2023-07-12 | 2024-06-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тверской государственный технический университет" (ТвГТУ) | Method of producing steel in an arc steel-making furnace |
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