A - Human Necessities – 01 – K
Patent
A - Human Necessities
01
K
A01K 1/015 (2006.01)
Patent
CA 2349953
An economical process that combines bentonite, or similar clays, that form a clump when in contact with cat urine, with waste cellulosic fibrous materials, preferably paper mill sludge, to form a light weight scoopable (clumping) cat litter product. In the process, paper mill cellulose waste is combined with bentonite clay (preferably sodium bentonite) in a mixing auger in varying percentages depending upon the desired end weight of the finished product, transferred to a secondary rotating drum mixer, then to a rotating drum dryer, and from the dryer to a screening process. The finished product is a granule weighing between 20 lbs./cubic foot and 50 lbs/cubic foot. The granule is highly absorbent and capable of forming a distinct clump that can be separated from the surrounding granules without falling apart. A unique characteristic of the process is the combination of heavy clay particles with light weight cellulose particles to form a new composite particle. In an alternate embodiment of the process of the present invention, the paper mill sludge may be first dried and then run through a hammer mill in order to create a dry, small particle site cellulosic material. These small, dried particles are then dry blended with the bentonite clay. Moisture is then added to aggregate the cellulosic material and the bentonite clay. The resulting aggregate particles may then be shaped, dried and separated as in the process described above.
Bloomer Larry D.
Smart & Biggar
LandOfFree
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