Oofukiho - Oofukiho

...However, as the quality of the ore declined and metallurgical technology was improved accordingly, it became necessary to convert crushed ore into powdered ore. The Obuki method, which was introduced at the Sado Aikawa Silver Mine in 1816 (Bunka 13), was a groundbreaking improvement to the metallurgical method that not only increased the efficiency of silver smelting but also succeeded in reducing management costs. However, it used powdered ore called tamono as its raw material, and waterwheel crushing was introduced to produce this powdered ore. However, such technological improvements were only able to temporarily address the decrease in raw ore and the decline in its quality. ...

*Some of the terminology explanations that refer to the "Oofuki method" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…しかし鉱石の品位が低下し，それに応じて冶金技術が改良されていくにしたがい，砕鉱の粉鉱化が必要となってきた。1816年(文化13)佐渡相川銀山で始められた大吹法は銀製錬の効率をあげるとともに，経営の節減に成功した画期的な冶金法の改良であったが，それは汰物と呼ばれる粉鉱を原料とするもので，この粉鉱生産のために水車砕鉱がとりいれられた。しかしこのような技術の改良も，原鉱の減少と品位低下に一時的に対応しえたにすぎなかった。…

※「大吹法」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