US4086325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for drying solutions containing boric acid
Assignee: Belgonucleaire SA
•
Filing: 1977-02-14
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Granted: 1978-04-25
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Expires: 1997-02-14
Abstract
Abstract The process of drying concentrates containing boric acid and/or borates after addition of lime is improved by the addition of an oxidizing agent to the concentrate.
Inventors
- 👤 Jean-Pierre Cordier
- 👤 Marc Vandorpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:26
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/08; G21F9/16; G21F9/167
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
69 words
A process for drying concentrates containing boric acid and/or borates by evaporation of these concentrates after addition of lime characterized in that the amount of lime is insufficient to convert all of the boric acid or borates to calcium borate and that an oxidizing agent is added to the concentrates wherein the oxidizing agent is employed in an amount sufficient to convert the boric acid or borates to perborate.
Claim 2
Dependent Claim
69 words
A process for drying concentrates containing boric acid and/or borates by evaporation of these concentrates after addition of lime characterized in that the amount of lime is insufficient to convert all of the boric acid or borates to calcium borate and that an oxidizing agent is added to the concentrates wherein the oxidizing agent is employed in an amount sufficient to convert the boric acid or borates to perborate.
Claim 3
Dependent Claim
15 words
A process according to claim 1 characterized in that the oxidizing agent is hydrogen peroxide.
Claim 4
Dependent Claim
35 words
A process for the insolubilization of concentrates containing boric acid and/or borates in an embedding agent, characterized in that the concentrates are dried using the process according to claim 1 before incorporating in said agent.
Claim 5
Dependent Claim
13 words
A process according to claim 3 wherein the oxidizing agent is hydrogen peroxide.
References Cited (Backward Citations)
US3557013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |