US3667688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for shearing solids in a solids-liquid suspension
Assignee: JM Huber Corp
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Filing: 1970-11-16
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Granted: 1972-06-06
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Expires: 1990-11-16
Abstract
Abstract A method for dis-aggregating solid particles in a slurry by pumping the slurry at pressures in excess of 1,000 p. s. i. through a column containing particulate media clamped in a fixed position is disclosed.
Inventors
- 👤 Joseph Iannicelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:06
CPC Classifications
B; B02; B02C; B02C19/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
24 words
The method of claim 1 wherein the percent solids in the dispersion is in a range of from about 10 to about 80 percent.
Claim 2
Independent Claim
186 words
The method of shearing and reducing the particle size of solids dispersed in a slurry by dis-aggregation, attrition, fracturing and delamination of the solids comprising: a. providing a solids-liquid suspension wherein the percentage of solids is in the range of from about 10 to about 80 percent and wherein at least 8.5 percent of the solids have a particle size less than 2 microns and a predominant portion of which have a particle size less than 10 microns; b. restraining a particulate media comprising a plurality of hard, durable, substantially non-deformable, non-flowable discrete particles a substantial portion of which have dimensions on the order of the particle size range of from about 25 mesh to about one-fourth inch within the central bore of a column; and c. pumping said solids-liquid suspension at an inlet pressure in excess of 1,000 pounds per square inch through the central bore of said column to force said solids-liquid suspension through the body of said particulate media wherein said discrete particles provide a plurality of tortuous passages producing high shear on said solids as said suspension is pumped through the column.
Claim 3
Dependent Claim
36 words
The method of claim 3 further including adjusting the restraining pressure on said particulate media so as to prevent substantially all movement by the particles of said media when subjected to the flow of said suspension.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |