Abstract
For high temperature combustion for metal de-oxidation (reduction), air blower have to be used. Especially for iron making from iron ore, which melting temperature is very high to reach only self combustion of charcoal or coal. In antiquity days, man blower with pipe was used, after that, bellows type was developed, however these system was suitable only for small amount production. If society wants large amount of iron; for example in civil war age, these system cannot supply the amount. Therefore, new type of blower system which used water mill was developed. This report deals with the variation of this system in Japan; Kagoshima, Izumo and Tohoku area by point out the difference of surrounding society.
