vat leaching

Japanese: vat leaching(英語表記)vatleaching
vat leaching

Leaching is not only used as a smelting technique for concentrates and roasted ores, but is also widely used as a direct extraction method for metals from oxidized ores. In this case, there are various methods, such as vat leaching, in which roughly crushed ore is placed in a large tank and oxidized by blowing air into it and stirring it to dissolve the metal elements; heap leaching, in which the ore is piled up in a yard (storage facility) and a dilute acid or alkaline solution is circulated and sprayed over it; and in-place leaching, in which numerous cracks are made in the ore body and water or acid is circulated directly through it. A leaching method that cultivates iron-oxidizing bacteria that live in the mine and utilizes their activity is called bacterial leaching.

*Some of the terminology that mentions "vat leaching" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

… リーチングは精鉱や焙焼鉱に対する製錬技術としてばかりでなく,酸化鉱などを対象とする金属の直接採取法としても広く応用されている。この場合に粗砕きした鉱石を大きなタンクに入れて空気吹込みによる酸化とかくはんを行いながら金属元素を溶かし出すバットリーチングvat leaching,鉱石をヤード(貯鉱)に堆積し,これに薄い酸やアルカリの溶液を循環・散布するヒープリーチングheap leaching,鉱体に多数の割れ目を入れ,直接に水や酸を循環させるインプレースリーチングなどの方法がある。また坑内に生息する鉄酸化バクテリアなどを育成し,その働きを利用するリーチング法はバクテリアリーチングと呼ばれる。…

※「vat leaching」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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