台湾向陽地区産セリサイト鉱石の選鉱分離について

抄録

It was found that there are enormous reserves of sericite in the Shiang-Yang area of Taiwan. Due to the lack of beneficiation technology, these resources have not been effectively utilized.
A series of investigations, including mineral identification and analysis, attrition grinding, flotation, and settling on the sample from the outcrops gave rise to the following results:
1. The outcrop samples are of flake or clay-like shape and the color of them vary from white. grey to dark grey.
2. The sericite are consists of sericite, pyrophyllite and quartz, and is accompanied by chlorite, calcite and pyrite as impurities. It also contains tra amount of copper, lead, silver and arsenic, etc.
3. Because the sericite ore is weakly bonded, it can be pulverized through the attrition grinding to give the particle size required for flotation operation.
4. The flotation behaviors of pyrophyllite, pyrite, sericite and quartz have been well understood. These minerals can be effectively separated by means of flotation.
5. The K₂O contents of the sericite can be upgraded to above 8% by means of dispersion followed by settling.
6. The flotation and settling procedures can obtain the following products: sericite which meets the industrial welding specification requirement, pyrophyllite suitable for refractory.