硫酸滓脱銅試驗及び作業について
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概要
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Pyrite cinders are one of the most important resources of raw mateirals in Japan. They are, however, greatly restricted in their utilization as raw materials for pig iron production, because of its higher Cu content. The author made some experimental research, since 1950, on the elimination of the Cu content from pyrite cinders at Hirohata Works of Fuji Iron & steel Co., Ltd. The processes were as follows : (1) To separate pyrite cinders by a magnetic separator into magnetic pyrite cinders and nonmagnetic pyrite cinders. (2) To roast magnetic pyrite cinders at 450°-600℃ for more than one hour. (3) To mix both cinders, roasted and unroasted. (4) To water-leach the mixtures and eliminate much amount of the Cu content. The first plant in Japan for this purpose was installed in 1952 and the author operated for mass production and continued to develop its application. The author could now get such eliminating rate as 25-30% by a simple water leaching and more than 50% by a kiln roasting (the magnetic separator not yet completed). The author could expect, therefore, to get larger eliminating rates by some modification of the equipments.
- 社団法人日本鉄鋼協会の論文
- 1953-11-25