The Experimental Study on the Carbon Black Weighing and Discharging Process

In this paper the development trend of mixer feeding system is discussed first. Then against the problem of inaccuracy in automatic weighing and feeding of carbon black and powders which occurs frequently, we suggest that converter motor be used in screw feeder, and that electric heating and variable screw pitch be adopted. We did a series of experiments with the weighing system, and give some recommendations. Discharging is also described in detail. Finally, we provide further suggestions to avoid weighing inaccuracy of discharging system or fluctuations in feeding time and accuracy caused by material adhesion and so on, so that mixing quality can be improved and mixing cycle can be shortened.