選鉱用水の循環使用に関する実験的考察 (第1報)
閉回路系連続操業試験
1984 年 100 巻 1152 号 p. 79-85
詳細
1984 年 100 巻 1152 号 p. 79-85
The authors have considered to operate an ore dressing plant with a closed circuit for water dealing with mineral processing from a standpoint of reducing consumption of water and preservation of an environment from pollution by the waste water.
This study is concerned with water recycling of are dressing as well as the problems and the measures to meet those ones caused by the closed recycles.
A sample of kaoline are from Minami-shiraoi mine in Hokkaido was used for the experimental example. The pilot plants of closed circuit were constructed and experimented to recover pure kaoline to be used for a paper manufacture, the other minerals, pyrite, quartz etc., in that are being removal.
This paper presents the results of continuous water recycling operation conducted for a long period at about 50 and 90% recycling ratio of the waste water.
The kaoline processing system was consisted of the processes of are feed, attrition, flotation, classification, bleaching, thickening and waste water treatment. The operation tests were examined with an open circuit for comparison before the closed circuit had been conducted. The mineral balance and quality of concentrate were obtained from the results of the operation test.
The result also showed that there was little difference between the open and closed circuit for the quality and operating condition in 50% recycling ratio. However, in case of 90% ratio, the quality and condition were degraded.
