Circulating-type dispersing system and a method therefor

A circulating-type dispersing system for circulating and dispersing a slurry or liquid mixture, comprising:

• a device for dispersing the mixture;
• a first tank connected to an outlet of the device;
• a second tank connected to an inlet of the device;
• piping that connects the device, the first tank, and the second tank in series, and formed as a circle;
• an adjusting valve provided on the piping between the first tank and the second tank for adjusting levels of the mixture in the first tank and the second tank;
• wherein by closing the adjusting valve the mixture that has been processed by the device accumulates in the first tank and the mixture in the second tank is supplied to the device,
• wherein, when the level of the mixture in the second tank reaches a lower limit, the adjusting valve is opened to supply the mixture in the first tank to the second tank,
• wherein the first tank is equipped with a first sensor for detecting if the level of the mixture in the first tank reaches a lower limit and the second tank is equipped with a second sensor for detecting if the level of the mixture in the second tank reaches the lower limit, and
• wherein the circulating-type dispersing system further comprises:
• a controller for controlling the adjusting valve based on the levels detected by the first and second sensors, and
• wherein the controller causes the adjusting valve to open when the second sensor detects that the level of the mixture in the second tank has reached the lower limit and the controller causes the adjusting valve to close when the first sensor detects that the level of the mixture in the first tank has reached the lower limit.