<寄書>選鑛の品質管理に就て
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概要
- 論文の詳細を見る
This paper gives an outline of progress in quality control at Hitachi milling and flotation plant. By raising the standards of control, and improving the operating conditions by means of the correlation analysis, copper content of copper concentrate became high and copper content of sulphur concentrate became low. For an example of operation control, the operation data and the control degree for the standards of control of the density and size of classifier overflow were shown. We judged the deviation from the characteristic frequency curve, to be an unusual condition of operation or of machine. In addition, we cleared up the merit of spiral classifier by comparing the character of rake and spiral classifiers. Then we showed the results of snapp-reading for mill feeds and condition of operating flotators. Finally, we described the standards of quality control and the operating conditions decided by these means.
- 東北大学の論文
- 1953-09-10