性状の異なる磁硫鉄鉱相互の浮遊性の比較

硫化鉄鉱の浮遊選鉱学的研究 (第3報)

抄録

In this study, the extent of variation of the floatability of pyrrhotites in xanthate flotation wasmeasured.
Relation between the floatability and crystallographic, magnetic and oxidation properties were also investigated.
The main results obtained are as follows:
1) The variation of about 30 percent in flotation recovery was recognized under the experimental condition used in this study. It may depend upon the fact that there is a difference in floatability between monoclinic pyrrhotite and hexagonal one.
2) The floatability increases with an increase of the intensity ratio of two reflections (called aand b-reflection respectively in this report) appearing in the 2θ range from 55° to 57° using iron radiation. The floatability also increases, with an increase of the magnetic susceptibility and the oxidation rate, with a decrease of the interplanar spacing. Namely, the floatability depends upon the abundance of monoclinic crystal in pyrrhotite.
3) On a basis of the stage in course of oxidation of pyrrhotites, the following three may be expected. a) The relationship is similar to the article (2). b) The relationship is opposite to the article (2). c) It is difficult to find a difference in floatability based on a difference in properties of pyrrhotite samples.
4) Besides, “Effect of Activation with Copper Sulphate” and “Relation between Floatability with Xanthate and Natural Floatability” were also discussed.