Lime dosing
Lime dosing
(OP)
My customer is local water authority and on the sewage treatment side is dosing lime into slurry to achieve better "caking" However they run the lime through a slaker which is causing a great deal of health and safety issues. Does any body succesfully dose lime into slurry. If any further information is required please let me know.
Many thanks
Many thanks





RE: Lime dosing
Your customer might do well to contact a slaked lime slurry supplier rather than doing this himself. Lime slaking is a highly exothermic process that can lead to safety and handling issues, and is probably bestleft to those who do it for a living....Chemical Lime is one company country-wide who should be contacted.
Orenda
RE: Lime dosing
this is unacceptable long term hence my question!
RE: Lime dosing
ht
RE: Lime dosing
Have just spoken to your company and they in the process of trying to help? Any other comments would be most usefull
Many thanks
RE: Lime dosing
Another thought......has your customer considered moving over to a pre-made magnesium hydroxide slurry rather than fighting the calcium oxide slaking process?
Orenda
RE: Lime dosing
Quicklime is generally only used for large volume useres because the cost of quicklime is a little less than the cost of hydrated lime. If you can get by with bags, it doesn't appear that you are a high volume user.
Hydrated lime is much easier to mix into solution so it may be the way to go.
RE: Lime dosing
Along the Texas Gulf Coast we normally use a 40% hydrated lime slurry because of plugging problems associated with with either dry lime product. The dry stuff turns into a solid rock in the storage silos from the ambient moisture. Operators and maintenance personnel just love clearing them out. {cannon]
RE: Lime dosing
I have also worked on a plant that doses lime solids directly to freshly centrifuged cake. The exothermic reaction that occured in the storage pile resulted in a further decrease in water content and improvment in cake structure.
I hope this is usefull.