Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
190 words
IN THE RECOVERY OF PAPER FIBER FOR REUSE FROM WASTE PAPER MATERIAL, THE PROCESS OF SEPARATING THE REUSABLE PAPER FIBERS FROM LIGHT ORGANIC CONTAMINANTS OF SPECIFIC GRAVITIES SIMILAR TO OR LOWER THAN PAPER FIBERS, COMPRISING THE STEPS OF; A. FORMING FROM SAID WASTE MATERIAL A PUMPABLE AQUEOUS SLURRY WHEREIN THE SOLID CONSTITUENTS ARE OF A MAXIMUM PARTICLE SIZE OF THE ORDER OF PAPER FIBERS AND CONSIST ESSENTIALLY OF PAPER FIBERS AND ONE OR MORE OF SUCH LIGHT ORGANIC CONTAMINANTS, NAMELY, GREASE, WAX AND PLASTIC FRAGMENTS AND FIBERS SIMILAR IN SIZE AND SPECIFIC GRAVITY TO PAPER FIBERS, B. HEATING SAID SLURRY TO AN ELEVATED TEMPERATURE OF AT LEAST 120*F SUFFICIENT TO SOFTEN WHATERVER GREASE AND WAX IS PRESENT THEREIN. C. SUPPLYING SAID HEATED SLURRY TO A CLOSED CYLINDRICALCONICAL VESSEL HAVING A TANGENTIALLY ARRANGED INLET PORT ADJACENT THE BASE THEREOF AND HAVING OUTLET PORTS IN THE APEX AND BASE THEREOF, SAID INLET AND BASE PORTS BEING OF SUBSTANTIALLY THE SAME ORDER OF FLOW AREA, D. MAINTAINING THE SUPPLY FLOW TO SAID INLET PORT SUFFICIENTLY HIGH TO DEVELOP IN SAID VESSEL CENTRIFUGAL FORCE CONDITIONS CAUSING VORTICAL SEPARATION OF SAID SLURRY WITHIN SAID VES-
Claim 2
Dependent Claim
190 words
IN THE RECOVERY OF PAPER FIBER FOR REUSE FROM WASTE PAPER MATERIAL, THE PROCESS OF SEPARATING THE REUSABLE PAPER FIBERS FROM LIGHT ORGANIC CONTAMINANTS OF SPECIFIC GRAVITIES SIMILAR TO OR LOWER THAN PAPER FIBERS, COMPRISING THE STEPS OF; A. FORMING FROM SAID WASTE MATERIAL A PUMPABLE AQUEOUS SLURRY WHEREIN THE SOLID CONSTITUENTS ARE OF A MAXIMUM PARTICLE SIZE OF THE ORDER OF PAPER FIBERS AND CONSIST ESSENTIALLY OF PAPER FIBERS AND ONE OR MORE OF SUCH LIGHT ORGANIC CONTAMINANTS, NAMELY, GREASE, WAX AND PLASTIC FRAGMENTS AND FIBERS SIMILAR IN SIZE AND SPECIFIC GRAVITY TO PAPER FIBERS, B. HEATING SAID SLURRY TO AN ELEVATED TEMPERATURE OF AT LEAST 120*F SUFFICIENT TO SOFTEN WHATERVER GREASE AND WAX IS PRESENT THEREIN. C. SUPPLYING SAID HEATED SLURRY TO A CLOSED CYLINDRICALCONICAL VESSEL HAVING A TANGENTIALLY ARRANGED INLET PORT ADJACENT THE BASE THEREOF AND HAVING OUTLET PORTS IN THE APEX AND BASE THEREOF, SAID INLET AND BASE PORTS BEING OF SUBSTANTIALLY THE SAME ORDER OF FLOW AREA, D. MAINTAINING THE SUPPLY FLOW TO SAID INLET PORT SUFFICIENTLY HIGH TO DEVELOP IN SAID VESSEL CENTRIFUGAL FORCE CONDITIONS CAUSING VORTICAL SEPARATION OF SAID SLURRY WITHIN SAID VES-
Claim 3
Dependent Claim
20 words
The process as defined in claim 1 wherein said elevated temperature is in a range of the order of 120150*F.
Claim 4
Dependent Claim
31 words
The process as defined in claim 1 wherein the ratio of the effective flow area of said inlet port to said apex port is in the range of 1:0.75 to 1:1.25.
Claim 5
Dependent Claim
31 words
The process as defined in claim 1 wherein all of said ports are of substantially the same effective flow area, and the discharge flows through said outlet ports are substantially equal.
Claim 6
Dependent Claim
25 words
The process as defined in claim 1 comprising the further step of subjecting said accepted stock to digestion before recovering said paper fibers for reuse.
Claim 7
Dependent Claim
17 words
The process as defined in claim 1 wherein said waste paper material is municipal waste including garbage.
Claim 8
Dependent Claim
14 words
The process as defined in claim 1 wherein said slurry comprises de-inked paper stock.
Claim 9
Dependent Claim
118 words
The process as defined in claim 1 wherein said pumpable slurry is formed by the successive preliminary step of: i. producing a slurry comprising water, paper fibers, garbage, and at least some of the following contaminant materials: frangible and infrangible inorganics, vegetation residues, insoluble inorganics, grit and other dirt, ii. centrifugally cleaning said slurry to remove the majority of said inorganics therefrom, iii. subjecting said cleaned slurry to screening efffective to remove therefrom particles larger than paper fibers, iv. centrifugally cleaning said screened slurry to remove high specific gravity particles therefrom, v. removing a substantial portion of fine fibers from said screened and cleaned slurry, and vi. thereafter carrying out steps (b), (c), (d) and (e) of claim
Claim 10
Dependent Claim
25 words
The process as defined in claim 8 comprising the further step of subjecting said accepted stock to digestion before recovering said paper fibers for reuse.