赤金選鉱工場の概況
1961 年 77 巻 879 号 p. 751-754
詳細
1961 年 77 巻 879 号 p. 751-754
The outline of the operation of Akagane concentrator which is producing copper and magnetite concentrates is dealt with. The Ore deposits of Akagane mine, Iwate Prefecture, are contact metasomatic deposits made up chiefly from pyrrhotite, magnetite, chalcopyrite and iron pyrite. Crude ore, assaying 0.7% Cu, 26.5% Fe, and 4.9% S, are crushed and ground, 800tons per day, copper concentrate (17% Cu) being produced. by flotation and magnetite being separated by magnetic separation. The magnetite concentrate is then retreated to remove pyrrhotite by flotation, leaving magnetite concentrate (65% Fe, 3.0% S) as a tailing.
