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論文情報
タイトル
RH、DHの大型化に伴う脱ガス反応の促進効果
別タイトル
Rate Enhancement of the Degassing Reaction by the Enlargement of RH and DH Reactors
タイトル (ヨミ)
RH DH ノ オオガタカ ニ トモナウ ダス ガス ハンノウ ノ ソクシン コウカ
著者
中里, 英樹
中里, 英樹
田尻, 浩之
田尻, 浩之
碓井, 建夫
碓井, 建夫
田中, 敏宏
田中, 敏宏
丸川, 雄浄
丸川, 雄浄
著者の別表記
Ono-Nakazato, Hideki
Tajiri, Hiroyuki
Usui, Tateo
Tanaka, Toshihiro
Marukawa, Katsukiyo
著者 (ヨミ)
ナカザト, ヒデキ
タジリ, ヒロユキ
タナカ, トシヒロ
マルカワ, カツキヨ
キーワード等
RH
DH
degassing
secondary refining
reaction area
circulation flow rate
steelmaking
抄録
Many techniques have been developed on the vacuum degassing of molten steel. The RH and DH reactors, which are suitable to the high productivity of converter, have occupied the mainstream. The DH process had constantly been installed until the latter half in 1970's, but has not been set up since 1980's. On the other hand, the RH process has continually been installed up to the present. The reason why RH has occupied the mainstream and has been developed further is examined from the viewpoint of the rate enhancement of the degassing reaction by the enlargement of RH and DH reactors. With the enlargement of the RH and DH reactors, the ratio of the upper surface area of steel in vacuum vessel to total reaction area decreases. On the other hand, the surface area of bubbles by Ar injection increases. Accordingly, the contribution of bubbles to the A/V (reaction area/metal volume) value becomes larger than that of the upper surface of steel in vacuum vessel. Although the argon gas can be also injected in the DH process, it is rather difficult to conduct the Ar injection in comparison with the RH process. It is not possible to sufficiently demonstrate the rate enhancement effect of the bubbles on the degassing reaction in DH reactor. Accordingly, from the viewpoint of the A/V value, the enlargement of the reactor is more advantageous to RH reactor. On the other hand, the circulation mass flow rate of steel similarly increases with increasing the heat size in both RH and DH reactors. It can be concluded that, with the enlargement of the RH and DH reactors, the Ar injection plays more important role on the rate enhancement of degassing reaction. In RH reactor, the molten steel is continuously circulated by the Ar injection. On the other hand, in DH reactor, the vacuum vessel repeats the periodic (uncontinuous) up and down. In this respect, the RH process is superior to the DH process. It can be considered that this is one of the reasons why the RH process has been more developed.
公開者
日本鉄鋼協会
公開者の別表記
The Iron and Steel Institute of Japan
公開者 (ヨミ)
ニホン テッコウ キョウカイ
掲載誌名
鉄と鋼
巻
89
号
11
開始ページ
1113
終了ページ
1119
刊行年月
2003
ISSN
00211575
NCID
AN00151251
URL
http://hdl.handle.net/11094/26378
権利情報
©日本鉄鋼協会
言語
日本語
カテゴリ
学術雑誌論文 Journal Article
論文詳細を表示
著者版フラグ
publisher
NII資源タイプ
学術雑誌論文
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学術雑誌論文
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text
DCTERMS.bibliographicCitation
鉄と鋼.89(11) P.1113-P.1119
DC.title
RH、DHの大型化に伴う脱ガス反応の促進効果
DCTERMS.alternative
Rate Enhancement of the Degassing Reaction by the Enlargement of RH and DH Reactors
DC.creator
中里, 英樹
田尻, 浩之
碓井, 建夫
田中, 敏宏
丸川, 雄浄
DC.creator
Ono-Nakazato, Hideki
Tajiri, Hiroyuki
Usui, Tateo
Tanaka, Toshihiro
Marukawa, Katsukiyo
DC.publisher
日本鉄鋼協会
DC.language" scheme="DCTERMS.RFC1766
日本語
DCTERMS.issued" scheme="DCTERMS.W3CDTF
2003
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/26378
DC.subject
RH
DH
degassing
secondary refining
reaction area
circulation flow rate
steelmaking
DCTERMS.abstract
Many techniques have been developed on the vacuum degassing of molten steel. The RH and DH reactors, which are suitable to the high productivity of converter, have occupied the mainstream. The DH process had constantly been installed until the latter half in 1970's, but has not been set up since 1980's. On the other hand, the RH process has continually been installed up to the present. The reason why RH has occupied the mainstream and has been developed further is examined from the viewpoint of the rate enhancement of the degassing reaction by the enlargement of RH and DH reactors. With the enlargement of the RH and DH reactors, the ratio of the upper surface area of steel in vacuum vessel to total reaction area decreases. On the other hand, the surface area of bubbles by Ar injection increases. Accordingly, the contribution of bubbles to the A/V (reaction area/metal volume) value becomes larger than that of the upper surface of steel in vacuum vessel. Although the argon gas can be also injected in the DH process, it is rather difficult to conduct the Ar injection in comparison with the RH process. It is not possible to sufficiently demonstrate the rate enhancement effect of the bubbles on the degassing reaction in DH reactor. Accordingly, from the viewpoint of the A/V value, the enlargement of the reactor is more advantageous to RH reactor. On the other hand, the circulation mass flow rate of steel similarly increases with increasing the heat size in both RH and DH reactors. It can be concluded that, with the enlargement of the RH and DH reactors, the Ar injection plays more important role on the rate enhancement of degassing reaction. In RH reactor, the molten steel is continuously circulated by the Ar injection. On the other hand, in DH reactor, the vacuum vessel repeats the periodic (uncontinuous) up and down. In this respect, the RH process is superior to the DH process. It can be considered that this is one of the reasons why the RH process has been more developed.
DC.rights
©日本鉄鋼協会
citation_title
RH、DHの大型化に伴う脱ガス反応の促進効果
citation_author
中里, 英樹
田尻, 浩之
碓井, 建夫
田中, 敏宏
丸川, 雄浄
citation_publisher
日本鉄鋼協会
citation_language
日本語
citation_date
2003
citation_journal_title
鉄と鋼
citation_volume
89
citation_issue
11
citation_firstpage
1113
citation_lastpage
1119
citation_issn
00211575
citation_public_url
http://hdl.handle.net/11094/26378
citation_keywords
RH
DH
degassing
secondary refining
reaction area
circulation flow rate
steelmaking