田川炭鉱における粉炭の重液選炭
1955 年 71 巻 807 号 p. 491-498
詳細
1955 年 71 巻 807 号 p. 491-498
Coal seam in Tagawa colliery, Yamagata Prefecture, is composed of coal, bone coal, coaly shale and shale. So it is very important to beneficiate such poor run-of-mine coal to meet with the demands of consumers.
Five years ago the drum-type sink-and-float separator was installed to treat lump coal, but minus 6mm coal could not be treated with this machine. It was found by several tests that fine coal of 8-1.2mm size was successfully cleaned b, y the “Full Back” type sink-float separator using pyrite cinder as heavy medium material. Details of this process and operating data is given in this paper.
