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フルテキストURLKJ00000155744.pdf ( 550.3KB ) 公開日 2010-04-19
タイトル長石のアミン浮選に関する基礎的研究
タイトルヨミチョウセキ ノ アミン フセン ニ カンスル キソテキ ケンキュウ
タイトル別表記Flotation of Feldspar with Amine
作成者城, 温三
藤井, 雄二郎
安田, 弌郎
作成者ヨミジョウ, オンゾウ
フジイ, ユウジロウ
ヤスダ, イチロウ
作成者別表記Jo, Onzo
Fujii, Yujiro
Yasuda, Ichiro
作成者所属山口大学工学部
内容記述(抄録等)The role of hydrofluoric acid in the flotation separation of feldspare with dodecylammonium acetate as collector was studied. The results obtained were as follows : (1) The Hallimond tube tests showed that the floatability of feldspar with DAA reached to the maximum at pH 10 and was poor at pH less than 3 or more than 12,which was attributed to the adsorption properties of DAA on the mineral. The isoelectric point of feldspar in DAA solutions found by the Zeta potential studies was measured at pH 3.5 and electrostatic force contributed to the adsorption of DAA on the untreated samples. (2) Hydrofluoric acid or fluorides activates feldspare in acidic solution, increases the adsorption of DAA on the surface of the feldspar, and consequently most efficient flotation is observed. Potassium fluoride showed good activating properties among many fluorides. (3) Chemisorption of DAA on the feldspar prepared in hydrofluoric acid solution might play a predominant role in flotation of feldspar regardless of the Zeta potential in solutions. The formation of fluosilicates are predicted as the reaction products of feldspar surface with hydrofluoric acid. (4) The presense of hydrofluoric acid is requisite for coagulation of feldspar fines. Potassium fluosilicate showed a marked effect on the adsorption of DAA and the adhesive property to air bubble, thus the activation of feldspar by hydrofluoric acid was related to the formation of the alkali metal fluosilicates. (5) X-ray diffraction chart on the feldspar pre-treated with hydrofluoric acid solution showed the formation of fluosilicate on the feldspar surface, which was identified as poiassium fluosilicate. (6) Results of experimental work conducted to evaluate the mechanism of the activation by hdrofluoric acid or fluorides on feldspar present the formation of potassium fluosilicate on the surface of the mineral, selective chemisorption of DAA in acidic solution, and resultant increase in floatability.
本文言語jpn
主題材料工学
資料タイプtext
ファイル形式application/pdf
出版者山口大学工学部
出版者ヨミヤマグチ ダイガク コウガクブ
NII資料タイプ紀要論文
ISSN0372-7661
NCIDAN00244228
学内刊行物(紀要等)山口大学工学部研究報告
掲載誌名山口大学工学部研究報告
掲載誌名別表記Memoirs of the Faculty of Engineering, Yamaguchi University
20
3
開始ページ337
終了ページ344
発行日1970
著者版/出版社版出版社版
備考本文データは国立情報学研究所において電子化したものである
リポジトリIDKJ00000155744
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/KJ00000155744