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US 4,981,600 AGranted
Method and means for treating sludge
AssigneeCemen-Tech, Inc.
InventorsHugh J. Tobler, Larry G. Lepper
Life of this patent
Estimating the term…
Abstract
The method and apparatus of the present invention comprise an elongated auger housing having a rotatable auger therein. Augers are provided for delivering sludge and an additive such as cement kiln dust to the intake end of the mixer housing. An auger within the mixer housing conveys the material to the discharge end of the housing, and at the same time mixes the materials together.
Claims13
Apparatus for treating waste sludge comprising:
- a source of waste sludge;
- an elongated mixer means comprising an elongated mixer auger housing and an elongated mixer auger, said mixer auger housing having an inlet opening and an outlet opening and forming an elongated mixing chamber therebetween, said mixer auger being rotatably mounted within said mixing chamber and extending between said inlet opening and said discharge opening;
- sludge conveyor means connected to said source of waste sludge for introducing said waste sludge to said inlet end of said mixer housing;
- an additive hopper for containing an additive material to be introduced to said inlet end of said auger housing;
- an additive conveyor means for conveying said additive from said additive hopper to said inlet opening of said mixer housing;
- first variable speed power means drivingly connected to said additive conveyor means;
- second variable speed power means drivingly connected to said sludge conveyor means;
- third variable speed drive means drivingly connected to said mixer auger;
- control means connected to said first, second, and third power means for simultaneously actuating said first, second, and third power means, whereby said first and second power means will cause said additive conveyor means and said sludge conveyor means to simultaneously introduce said additive material and said sludge into said inlet end of said auger housing, and said third power means will cause said mixer auger to rotate, thereby mixing said additive and said sludge together and conveying said additive and said sludge toward and outwardly through said discharge end of said housing.
6 more elements
A method for treating sludge comprising:
- placing an additive material to be added to said sludge in an additive hopper;
- conveying said additive material from said additive hopper to the inlet end of an elongated mixer housing having a mixer auger rotatably mounted therein and having a discharge opening;
- simultaneously introducing said sludge to said inlet end of said mixer housing;
- rotating said mixer auger within said mixer housing for causing said additive material and said sludge to be mixed together within said mixer housing and to be conveyed toward and discharged from said discharge opening of said mixer housing.
1 more element
Dependencies are inferred from the claim text.