…For example, when carbon dioxide dissolves in water, this is an example of the former, and when carbon dioxide is absorbed by a caustic soda solution, this is an example of the latter. The reverse operation of gas absorption is desorption or stripping. Gas absorption is widely used industrially as a means of purifying gases, removing impurities from gases such as air pollutants, and as a gas-liquid reaction operation in which a gas is introduced into a liquid to cause a chemical reaction. … From [Open-cut mining]…In open-cut mines on continents such as the United States and Canada, a relatively flat surface is often dug into a bowl-shaped area, and the ore is transported up by truck or conveyor belt. When the deposit is layered and spreads near the surface, as in the case of coal, it may be mined using a method called stripping. In this method, a part of the deposit is exposed in a strip several tens of meters wide, and the ore (coal) is extracted from that area. … *Some terminology explanations that mention "stripping" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…たとえば,炭酸ガスが水に溶解する場合は前者の例であり,炭酸ガスが苛性ソーダ水溶液により吸収される場合は後者の例である。ガス吸収の逆の操作は放散desorptionまたはストリッピングstrippingである。ガス吸収は,気体の精製,大気汚染物質など気体中の不純物の除去手段として,また液体中に気体を導入して化学反応を起こさせる気液反応操作として工業的に広く用いられる。… 【露天掘り】より…アメリカやカナダなど大陸の露天掘りでは,比較的平坦な地表からすり鉢状に掘り下げるものも多く,トラックやベルトコンベヤにより鉱石を運び上げる方式が行われる。 石炭のように,鉱床が層状で地表近くに広がっている場合には,ストリッピングstrippingと呼ぶ方法で採掘が行われる場合がある。これは,まず鉱床の一部を数十mの幅で帯状に露出させて,そこの鉱石(石炭)を採掘する。… ※「stripping」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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