Acid sludge as binder for the production of shaped carbonaceous articles and activation thereof
Abstract
Abstract ACID SLUDGE FORMED BY THE REACTION OF A MINERAL ACID WITH A RELATIVELY HIGH MOLECULAR WEIGHT HYDROCARBON IS USED TO BIND VARIOUS PARTICULATE CARBON MATERIALS INTO SHAPED ARTICLES WHICH MAY BE ACTIVATED. THE CARBON MATERIALS USEFUL IN THIS INVENTION ARE MATERIALS SUCH AS COKE, COAL, WOOD CHARCOAL OR ANY FORM OF CARBON PRODUCED BY CHARRING OR DESTRUCTIVE DISTILLATION OF WOOD, PEAT, LIGNITE, NUT SHELLS, CORN COBS, BONES, VEGETABLE MATTER GENERALLY, NATURAL AND SYNTHETIC ORGANIC POLYMERS, OR OTHER CARBONACEOUS MATTER, INCLUDING LIQUID AND LIQUEFIABLE PETROLEUM FRACTIONS. THE CARBON CONTENT OF MATERIALS USED FOR ADMIXING WITH THE ACID SLUDGE RANGES FROM ABOUT 10 PERCENT FOR BONE CHARCOAL TO 98 PERCENT OR HIGHER FOR SOME WOOD CHARS. THE APPROXIMATE BULK DENSITY OF USEFUL CARBON MATERIALS RANGES FROM 0.08 TO 2.50.
Inventors
- 👤 Oliver A Kiikka
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |