froth flotation

Japanese: froth flotation(英語表記)frothflotation
froth flotation

...Methods of generating bubbles were also devised, such as reacting carbonate minerals contained in the ore with acid and using the carbon dioxide bubbles that are generated. However, these methods have almost fallen into disuse, and now the most common method is froth flotation, which involves adding a small amount of a surfactant called a foaming agent to finely disperse the large amount of air introduced by a mechanical agitator, forming a foam layer on the liquid surface of the pulp, which is then separated and collected. Today, flotation generally refers to this froth flotation method.

*Some of the terminology that mentions "froth flotation" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…気泡の発生方法も鉱石中に含まれる炭酸塩鉱物を酸と反応させ,発生する炭酸ガスの気泡を利用する方法などが考案された。しかし,これらの方法はほとんどすたれ,現在では,起泡剤と呼ばれる界面活性剤の少量添加により,機械的かくはん装置によって導入された多量の空気を細かく分散させるとともに,パルプの液面に泡沫層を形成させ,これを分離・回収するという方法,すなわち泡沫浮選froth flotationが普遍的方法となった。現在,浮選といえばこの泡沫浮選法をさすのが一般である。…

※「froth flotation」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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