Thanks to all you responded!
Hope to hear more references!
To MJCronin: Good approach, but I do not keep contact with the past projects. Actually people keep moving so easily lose contact with them.
To Compositepro and peirreick: Mechanical seal specially designed for slurry service works...
We are selecting pumps for a lime milk recirculation system.
I've done many such systems for mining process, pumping lime milk with 15 to 18% hydrated lime. Mechanical seals are always used with no seal water nor quench water. Never got any negative feedback and I witnessed some working...