Compact lime slaker
AssigneeDravo Lime Company
InventorsCharles J. Muzik, Kenneth L. Yoest
Life of this patent
Estimating the term…
Abstract
A compact lime slaker has an inner vessel forming an initial slaking chamber disposed in an outer vessel forming a final slaking chamber, with agitators provided In both chambers. Slaked lime from the final slaking chamber is pumped to a collection trough where slaked lime and grit are removed therefrom, while a major portion of slaked lime, with grit removed is returned to the final slaking chamber. The slaked lime in the final slaking chamber, at an elevated temperature due to the slaking exotherm, insulates the lime being slaked in the initial slaking chamber and provides heat thereto to aid in the initial slaking. Removal of grit from the portion of slaked lime recycled to the final slaking chamber prevents clogging or attrition of components of the slaker.
Claims11
A lime slaking apparatus comprising:
- an outer vessel having a bottom wall, upwardly extending tubular side wall and an open top forming a final slaking chamber;
- an inner vessel having a bottom wall, upwardly extending tubular side wall and an open top forming an initial slaking chamber, said inner vessel disposed within said outer vessel with an annular gap between the sidewalls of said inner vessel and said outer vessel and with said bottom walls in spaced relationship;
- said inner vessel having a shaft bore through the bottom wall thereof, and a discharge opening in a wall thereof such that said initial slaking chamber of said inner vessel communicates with said final slaking chamber of said outer vessel;
- a source of lime and water, and means disposed at the top of said inner vessel for charging said lime and water into said initial slaking chamber;
- a rotatable shaft extending from above said inner vessel and through said shaft bore into said outer vessel, and terminating adjacent said bottom wall of said outer vessel, said shaft having agitators thereon in both said initial and final slaking chambers;
- means for rotating said shaft;
- a collection trough for slaked lime;
- means for discharging slaked lime from said outer vessel to said collection trough;
- means for recycling at least a portion of discharged slaked lime from said collection trough back to said final slaking chamber;
- and
- means for discharging a slaked lime product from said collection trough.
A lime slaking apparatus comprising:
- an outer vessel having a bottom wall, upwardly extending, tubular side wall and an open top forming a final slaking chamber;
- an inner vessel having a bottom wall, upwardly extending tubular side wall and an open top forming an initial slaking chamber, said inner vessel disposed within said outer vessel with an annular gap between the sidewalls of said inner vessel and said outer vessel and with said bottom walls in spaced relationship;
- said inner vessel having a shaft bore through the bottom wall thereof, and a discharge opening in said upwardly extending side wall thereof, adjacent said bottom wall, such that said initial slaking chamber of said inner vessel communicates with said final slaking chamber of said outer vessel;
- a source of lime and water, and means disposed at the top of said inner vessel for charging said lime and water into said initial slaking chamber;
- a rotatable shaft extending from above said inner vessel and through said shaft bore into said outer vessel, and terminating adjacent said bottom wall of said outer vessel, said shaft having agitators thereon which, upon rotation of said shaft, give primarily vertical circulatory motion to the liquid medium contained in both said initial and final slaking chambers;
- means for rotating said shaft;
- a collection trough for slaked lime;
- means for discharging slaked lime from said outer vessel to said collection trough;
- means for recycling at least a portion of discharged slaked lime from said collection trough back to said final slaking chamber;
- and
- means for discharging a slaked lime product from said collection trough.
Dependencies are inferred from the claim text.