The significance of the reflux setting for low-pressure coal slurry pumps
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A return line is provided at the outlet of the low-pressure slurry pump in the process package; what is the principle behind some of the slurry returning to the mill, and what are the actual operational results?
It should be returning to the slurry discharge tank; I just can’t figure out how it could return to the mill
The idea of returning part of the coal slurry to the mill for re-grinding existed a long time ago, with the aim of increasing the concentration of the coal slurry and thereby boosting production while reducing consumption. I’ve heard that it has been in use for a long time in water-coal slurry boilers; as for its effectiveness, it’s not yet clear
Oh, so that means just like in distillation reflux, it’s the same principle
Is his intention to send the substandard pulp back to the mill for re-grinding?
The purpose is to increase the slurry concentration; it involves adding a new line in the outlet pipeline that leads directly back to the mill
Grind the coal slurry more finely to increase its bulk density. But it was of no use; it was never used at all
It is described in the book \"Development and Applications of Water-Coal Slurry\"
Do you have the book? Or an analysis and introduction regarding this part would also be good.
The book isn’t here; I’ll take a photo of it when I return from the business trip and send it to you