SU440422A2 - The method of processing metals in a vacuum and a column of synthetic slag - Google Patents
The method of processing metals in a vacuum and a column of synthetic slagInfo
- Publication number
- SU440422A2 SU440422A2 SU1933617A SU1933617A SU440422A2 SU 440422 A2 SU440422 A2 SU 440422A2 SU 1933617 A SU1933617 A SU 1933617A SU 1933617 A SU1933617 A SU 1933617A SU 440422 A2 SU440422 A2 SU 440422A2
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- slag
- vacuum
- column
- refining
- synthetic slag
- Prior art date
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Description
1one
Изобретение относитс к черной металлургии , в частности к внепечной обработке расплавленных металлов.The invention relates to ferrous metallurgy, in particular to the after-furnace treatment of molten metals.
По основному авт. св. № 178843 известен способ обработки стали в вакууме и столбе синтетического шлака, создаваемым за счет разницы давлений в вакуумной камере и окружающей атмосфере, который обеспечивает большую удельную поверхность раздела в системе металл-шлак, позвол ет эффективно снижать концентрацию растворенных газов и вредных примесей.According to the main author. St. No. 178843 discloses a method for treating steel in a vacuum and a column of synthetic slag created by the pressure difference in the vacuum chamber and the surrounding atmosphere, which provides a large specific section surface in the metal-slag system, which allows effectively reducing the concentration of dissolved gases and harmful impurities.
Однако вследствие того, что шлак в шлаковом рукаве в течение всего процесса не обновл етс , рафинирующа спо1собность его постепенно снижаетс из-за насыщени шлака продуктами процесса рафинировани . Кроме того, часть шлака (), используема дл создани шлакового затвора в приемном ковше, пассивна с точки зрени рафинировани металла.However, due to the fact that the slag in the slag arm is not updated during the whole process, its refining capacity gradually decreases due to the slag saturation with the products of the refining process. In addition, part of the slag () used to create the slag gate in the receiving bucket is passive from the point of view of refining the metal.
Целью изобретени вл етс увеличение степени рафинировани металла, что достигаетс за счет периодического обновлени шлака в шлаковом рукаве.The aim of the invention is to increase the degree of refining of the metal, which is achieved by periodically updating the slag in the slag arm.
Способ заключаетс в том, что в процессе обработки подачу м-еталла кратковременно на 1-2 мин прекращают, одновременно увеличива давление в вакуумной камере. При этом шлак, насыщенный продуктами рафинировани , возвращаетс из шлакового рукава в ковш и смешиваетс со свежим шлаком, вынолн ющим роль шлакового затвора на первой стадии рафинировани . Затем при создаНИИ разрежени в вакуумной камере шлаковый рукав вновь заполн етс шлаком, в котором концентраци продуктов рафинировани вдвое меньше, чем до обновлени шлака.The method consists in the fact that in the process of processing the supply of metal is briefly stopped for 1-2 minutes, at the same time increasing the pressure in the vacuum chamber. In this case, the slag, saturated with the products of refining, returns from the slag sleeve to the ladle and mixes with the fresh slag, which plays the role of the slag gate in the first stage of refining. Then, when a vacuum chamber is created in a vacuum chamber, the slag sleeve is again filled with slag, in which the concentration of refining products is half as much as before the slag upgrade.
В зависимости от содержани вредных примесей в исходном металле, требуемой степени рафинировани , удельного расхода шлака, размеров шлакового рукава и приемного ковша определ ютс периодичность и врем обновлени шлака.Depending on the content of harmful impurities in the source metal, the required degree of refining, the specific consumption of slag, the size of the slag sleeve and the receiving ladle, the frequency and time of slag renewal are determined.
При обработке металла со сравнительно низкой исходной концентрацией вредных примесей и газов предложенный способ позвол ет уменьшить расход синтетического шлака.When processing metal with a relatively low initial concentration of harmful impurities and gases, the proposed method allows to reduce the consumption of synthetic slag.
2020
Предмет изобретени Subject invention
Способ обработки металлов в вакууме и столбе синтетического шлака по авт. св. № 178843, отличающийс тем, что, сThe method of processing metals in a vacuum and a column of synthetic slag according to ed. St. No. 178843, characterized in that, with
целью увеличени степени рафинировани , шлак, наход щийс в шлаковом рукаве, периодически смешивают со шлаком в ковше путем прекращени процесса обработки на 1-2 мин с одновременным увеличением давлени в вакуумной камере.In order to increase the degree of refining, the slag in the slag sleeve is periodically mixed with the slag in the ladle by stopping the treatment process for 1-2 minutes while simultaneously increasing the pressure in the vacuum chamber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1933617A SU440422A2 (en) | 1973-06-08 | 1973-06-08 | The method of processing metals in a vacuum and a column of synthetic slag |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1933617A SU440422A2 (en) | 1973-06-08 | 1973-06-08 | The method of processing metals in a vacuum and a column of synthetic slag |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU178843 Addition |
Publications (1)
Publication Number | Publication Date |
---|---|
SU440422A2 true SU440422A2 (en) | 1974-08-25 |
Family
ID=20557005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1933617A SU440422A2 (en) | 1973-06-08 | 1973-06-08 | The method of processing metals in a vacuum and a column of synthetic slag |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU440422A2 (en) |
-
1973
- 1973-06-08 SU SU1933617A patent/SU440422A2/en active
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