How to grind pet coke in vertical roller mill designed for normal coal
we are having loshe mill LM26-3 for coal grinding, now we want to grind pet coke from this mill with a residue of 2% at 90 mic mesh. what changes we have to do or is it possible to reduce the table speed and get the desired fineness and what is the optimum speed pl. write
re How to grind pet coke in vertical roller mill designed for normal coal
There is no problem to grind pet coke in LM . If you send me your operating data and design data like fan flow, nozzle area, mill o/l operating temp , dp , HGI of pet coke and grinding pressure with N2 pressure in accumulaor .
Speed reduction of table can not improve grinding( holding good bed layer of pet coke). better reduced the nozzle velocity of gas with reduction of op. o/l temp around 75 oC and reduced operating dp. set point 20% present with reduced op. grinding pressure 10 %.