<報文>高クロムラテライト鉱の磁選による予備処理について

概要

論文の詳細を見る
The present paper deals with a series of experiments in applicability of the low-intensity, high-intensity and roast-magnetic separations for laterite ores. Three samples of gravity concentrates from different localities were used in tests. It was identified by means of microscope, Vickers hardness tester, electron probe X-ray microanalyser and X-ray diffractometer that most of chromium minerals in laterite ores were magnesiochromite, about 20〜30% of spinel being present in chromium iron oxide. It was defined that the limit for the grade of the chromite concentrate to be obtained from these types of ores was about 45〜51% of Cr_2O_3,the grade of chromite concentrate obtained by means of roast-magnetic separation being about 39〜44% of Cr_2O_3. The low-intensity magnetic concentrate was mainly composed of magnetite, containing about 60〜63% of Fe and the roasted magnetic one of goethite, hematite, etc. contained about 55% of Fe and appreciable amounts of chromium, nickel and aluminium.
東北大学の論文
1966-12-20