夕張二礦選炭工場におけるレオ式とバウム式水選機の比較
1955 年 71 巻 807 号 p. 473-477
詳細
1955 年 71 巻 807 号 p. 473-477
The coal-preparation plant of Yubari coal mine, Hokkaido, which had been operated mainly with Rheolaveurs for over twenty years, was converted into the Baum-type washer plant in 1954.
The report describes the causes and effects of this conversion, along with the comparison of the Baum-type washer with the former Rheolaveur from technical and economical points of view. Although Baum-type washer is more expensive in the first cost, it produces much more cleaned coal of coking grade because of its sharper separation, resulting in the increase of net profit by about 300 yen per ton of cleaned coal, as well as some savings in operation costs.
