選鉱用水の循環使用に関する実験的考察 (第3報)
閉回路系統のシミュレーション
1987 年 103 巻 1192 号 p. 383-388
詳細
1987 年 103 巻 1192 号 p. 383-388
In the previous papers, it was reported that a pilot plant was constructed to test for recovery of pure kaoline with a closed water recycling system, using kaoline ore of the Minami-shiraoi mine, Hokkaido.
In the present paper, the authors carried out experiments to compare with the results between the continous operations of an open circuit system and operations of approximately 50% and 90% recycling ratio with a closed circuit system. The changes of the accumulated materials in the closed circuit system and the influence of these accumulations on the performance of the process were measured and examined.
Due to the reuse of the waste water in recycling, solid particles and materials in solution accumulated in the recycling water as well as in the plant water, and these increased in proportion to the recycling ratio.
On the other hand, when the amount of the accumulations exceeded the permissible limit value, the performance of the equipments was markedly lowered. This result indicated that it was necessary to estimate the process of the passage of time in accumulation of the materials and their extent, and to find the best recycling ratio and the optimum operating condition.
Investigation on the simulation of the recycling system will be the most reasonable to consider the optimum operating condition. This report proposes the simple models of the mass balance of materials and the flow pattern of the flows in each apparatus. A simulation program of total system has been made by using those models.
The calculated results approximated to those of the survey. From this fact, this simulation program expresses well the behavior of the materials in a recycling system.
