How to prevent slurry overflow from a drum screen
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Besides controlling the slurry viscosity, what other specific measures can be taken on the equipment to prevent slurry overflow from the primary and secondary drum screens?
From a technical perspective, there are several reasons for slurry leakage in coal slurries, including factors related to concentration, viscosity, and particle size. From the equipment perspective, the reasons include the size of the screen on the roller screen, the height of the overflow weir, and issues with the mill itself.
Reply to 3# Bai Ting: She is absolutely right; various factors need to be taken into consideration
Regarding the equipment, it is necessary to regularly check the wear of the mill rods and the condition of the liner plates. In terms of the processing parameters, it is important to control the concentration, particle size, and quality of the coal, as well as to clean the drum screen on a regular basis
Since you two are both in Ordos upstairs, you should have a good conversation. As for the height of the overflow weir mentioned on the second floor, what is the typical design value?
Process water serves to enhance flow, while additives merely change hydrophilicity. Excessively high internal water mobility will deteriorate. So, we need to pay attention to the internal water. By changing the mesh size of the drum screen, more coarse particles can be added to increase the slurry concentration; however, no very significant changes are noticeable in actual operation, especially with four-nozzle systems. Sometimes, the water used for coal grinding can cause scaling on the drum screen, which also leads to slurry overflow.