US4338134A
Expired / Lapsed
US
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Process for binding waste liquor or sludge
Assignee: HANDELSKONTOR LUBERT GRAF ZU MUNSTER & Co A WEST GERMAN CORP GmbH
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Filing: 1980-07-28
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Granted: 1982-07-06
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Expires: 2000-07-28
Abstract
Abstract An improved process for binding waste liquor or sludge comprising adding a hydraulic mortar to waste liquor or sludge to form a mixture and allowing the mixture to set, the improvement consisting of subjecting the mixture of hydraulic mortar and waste liquor or sludge to a milling operation before the mixture is allowed to set.
Inventors
- 👤 Ludbert Graf zu Munster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:07
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/008; B; B09; B09B; B09B1/00; B09B3/00; B09B3/30; B09B3/35; B09B3/70; C04; C04B; C04B18/00; C04B18/04; C04B18/0418; C04B20/00; C04B20/02; C04B20/026; C04B40/00; C04B40/0028; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
62 words
In the process for binding waste liquor or sludge comprising forming a mixture of hydraulic mortar and waste liquor or sludge in the presence of inhibiting zinc or phosphorus compounds and allowing said mixture to set, the improvement consisting of subjecting said mixture of hydraulic mortar and waste liquor or sludge to a milling operation before said mixture is allowed to set.
Claim 2
Dependent Claim
62 words
In the process for binding waste liquor or sludge comprising forming a mixture of hydraulic mortar and waste liquor or sludge in the presence of inhibiting zinc or phosphorus compounds and allowing said mixture to set, the improvement consisting of subjecting said mixture of hydraulic mortar and waste liquor or sludge to a milling operation before said mixture is allowed to set.
Claim 3
Dependent Claim
126 words
In the process for binding sludge comprising forming a mixture of hydraulic mortar and sludge in the presence of inhibiting zinc or phosphorus compounds and allowing said mixture to set, the improvement consisting of utilizing a weight ratio of hydraulic mortar to sludge solids of from 30:1 to 0.5:1, the sludge having a solids content of up to 60% by weight with the remainder water, and subjecting said mixture of hydraulic mortar and sludge to a milling operation to increase the specific surface area of the solids, especially of the hydraulic mortar, by 50% and more and that more solid particles especially of the hydraulic mortar pass through a particular sieve size after said milling, than before said milling, before said mixture is allowed to set.
Claim 4
Dependent Claim
126 words
In the process for binding sludge comprising forming a mixture of hydraulic mortar and sludge in the presence of inhibiting zinc or phosphorus compounds and allowing said mixture to set, the improvement consisting of utilizing a weight ratio of hydraulic mortar to sludge solids of from 30:1 to 0.5:1, the sludge having a solids content of up to 60% by weight with the remainder water, and subjecting said mixture of hydraulic mortar and sludge to a milling operation to increase the specific surface area of the solids, especially of the hydraulic mortar, by 50% and more and that more solid particles especially of the hydraulic mortar pass through a particular sieve size after said milling, than before said milling, before said mixture is allowed to set.
Claim 5
Dependent Claim
123 words
In the process for binding sludge comprising forming a mixture of hydraulic mortar and sludge in the presence of zinc oxide and allowing said mixture to set, the improvement consisting of utilizing a weight ratio of hydraulic mortar to sludge solids of from 30:1 to 0.5:1, the sludge having a solids content of up to 60% by weight with the remainder water, and subjecting said mixture of hydraulic mortar and sludge to a milling operation to increase the specific surface area of the solids, especially of the hydraulic mortar, by 50% and more and that more solid particles especially of the hydraulic mortar pass through a particular sieve size after said milling than before said milling, before said mixture is allowed to set.
Claim 6
Dependent Claim
123 words
In the process for binding sludge comprising forming a mixture of hydraulic mortar and sludge in the presence of zinc oxide and allowing said mixture to set, the improvement consisting of utilizing a weight ratio of hydraulic mortar to sludge solids of from 30:1 to 0.5:1, the sludge having a solids content of up to 60% by weight with the remainder water, and subjecting said mixture of hydraulic mortar and sludge to a milling operation to increase the specific surface area of the solids, especially of the hydraulic mortar, by 50% and more and that more solid particles especially of the hydraulic mortar pass through a particular sieve size after said milling than before said milling, before said mixture is allowed to set.
Claim 7
Dependent Claim
59 words
In the process for binding waste liquor or sludge comprising forming a mixture of hydraulic mortar and waste liquor or sludge in the presence of zinc oxide and allowing said mixture to set, the improvement consisting of subjecting said mixture of hydraulic mortar and waste liquor or sludge to a milling operation before said mixture is allowed to set.
Claim 8
Dependent Claim
59 words
In the process for binding waste liquor or sludge comprising forming a mixture of hydraulic mortar and waste liquor or sludge in the presence of zinc oxide and allowing said mixture to set, the improvement consisting of subjecting said mixture of hydraulic mortar and waste liquor or sludge to a milling operation before said mixture is allowed to set.
Claim 9
Dependent Claim
25 words
Process according to claim 4, characterized in that sludge having a solids content of up to 60% by weight, with the remainder water, is used.
Claim 10
Dependent Claim
26 words
Process according to claim 5, characterized in that sludge having a solids content of from 10% to 50% by weight, with the remainder water, is used.
Claim 11
Dependent Claim
26 words
Process according to claim 4 or 5, characterized in that a weight ratio of hydraulic mortar to sludge solids of from 30:1 to 0.5:1 is used.
Claim 12
Dependent Claim
16 words
Process according to claim 7, characterized in that said weight ratio is from 10:1 to 1:1.
Claim 13
Dependent Claim
32 words
Process according to claim 4 or 6, characterized in that, in the milling operation, the specific surface area of the solids, especially of the hydraulic mortar, is increased by 50% and more.
Claim 14
Dependent Claim
21 words
Process according to claim 9, characterized in that the specific surface area of the solids is increased by 90% and more.
Claim 15
Dependent Claim
21 words
Process according to claim 10, characterized in that the specific surface area of the solids is increased by 150% and more.
Claim 16
Dependent Claim
42 words
Process according to claim 4 or 1, characterized in that the milling operation is carried out in such a manner that more solid particles, especially the hydraulic mortar particles, pass through a particular sieve size after said milling, than before said milling.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |