24Naによる浮選機内パルプ滞留時間の測定

• 資料種別: 記事
• タイトル: 24Naによる浮選機内パルプ滞留時間の測定
• 著者・編者: 米沢 利明 他
• 著者標目: 米沢 利明
• タイトル（掲載誌）: 東北大学選鉱製錬研究所彙報
• 巻号年月日等（掲載誌）: 13(1) 1957.07
• 掲載巻: 13
• 掲載号: 1
• 掲載ページ: ????
• 掲載年月日（W3CDTF）: 1957-07
• ISSN（掲載誌）: 0040-876X
• ISSN-L（掲載誌）: 0040-876X
• 出版事項（掲載誌）: 仙台 : 東北大学選鉱製錬研究所
• 出版地（国名コード）: JP
• 本文の言語コード: jpn
• NDLC: ZP41
• 対象利用者: 一般
• 所蔵機関: 国立国会図書館
• 請求記号: Z17-359
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館雑誌記事索引; https://ndlsearch.ndl.go.jp
• 書誌ID（NDLBibID）: 10000556; http://id.ndl.go.jp/bib/10000556
• 整理区分コード: 632

• 要約等: application/pdf; The residence time of ore pulp in a number of cells, arranged in series, of the 300 mm×300 mm flotation machines of Fahrenwald type, installed in the Central Research Laboratory of the Nippon Mining Co., Ltd. for testing purpose, has been investigated with ^<24>NaCl as a radioactive tracer. After introducing about 200 of ^<24>NaCl, weighing about 80 mg, into the part of the ore pulp fed continuously to the flotation cells and thus marking the water constituting the pulp, the intensity of activities of ^<24>Na contained in the pulp from the tailing gates of two of the series of the cells was measured with a G-M counter. Then the specific concentration of ^<24>NaCl varying with time was examined. It has been found that the data obtained from the above investigation almost coincide with the values calculated from the following theoretical formula representing generally the concentration of marked flow of any material discharged from the stirred reactors of flow type, such as flotation cells : [numerical formula]where K=F/V ; F=rate of initial flow of a material fed into reactors ; V=effective volume of one reactors ; t=time ; C_0=concentration of the marked material in the firrst reactor at time=0 ; C=concentration of the marked material in the nth reactor at time=t. It has been further revealed that the "flotation time", V/F, hitherto commonly adopted approximately agrees with the average residence time of the ore pulp either obtained in this experiment or obtained by the theoretica1 calculation. In conclusion, it will be possible to simplify greatly the experimental procedures and the technique of measurement and at the same time to attain high accuracy in such experiments, if the radioactive ^<24>NaCl is used as a physical tracer. So it is considered that ^<24>NaCl may be widely utilized as a tracer in investigations of this kind.; 紀要類(bulletin); 381412 bytes
• 作成日（W3CDTF）: 2008-05-02
• 関連情報（URI）: http://hdl.handle.net/10097/32301; https://tohoku.repo.nii.ac.jp/records/50095; http://id.ndl.go.jp/bib/10000556; https://ndlsearch.ndl.go.jp/books/R000000004-I10000556
• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: 学術機関リポジトリデータベース; https://irdb.nii.ac.jp; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; CiNii Articles
• 書誌ID（NDLBibID）: 10000556; http://id.ndl.go.jp/bib/10000556
• NII論文ID: 110000202144