Patent US4017392A successfully refreshed from Google Patents.
US4017392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic peroxides as slime settling agents
Assignee: IMC Fertilizer Inc
•
Filing: 1975-12-22
•
Granted: 1977-04-12
•
Expires: 1995-12-22
Abstract
Abstract The settling of finely-divided solids that are in suspension in an aqueous medium due to the presence of a colloidal argillaceous mineral is enhanced by adding a small but effective amount of an organic peroxide to the suspension. This invention is especially useful for treating aqueous suspensions of ultrafine clay and other materials resulting from the hydraulic concentration of an ore material, such as phosphate slimes.
Inventors
- 👤 Martin Hamer
- 👤 Othmer F. Batzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:25
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/20; C22B3/44; B; B01; B01D; B01D21/00; B01D21/01; C02; C02F; C02F1/00; C02F1/72; C02F1/722; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/906; Y10S210/907
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
97 words
A process for settling finely-divided mineralogical waste slime solids from a phosphate ore processing operation including colloidal argillaceous material from an aqueous suspension thereof which comprises adding to said suspension, in an amount effective to enhance the settling of said solids, at least one organic peroxide having a molecular weight not in excess of about 225 in an amount of at least about 10 lb per ton of suspended solids said organic peroxide being selected from the group consisting of urea hydrogen peroxide, peracetic acid, di-t-butyl peroxide, cumene hydroperoxide, t-butyl hydroperoxide, t-butyl per-2-ethyl hexoate, and t-butyl perbenzoate.
Claim 2
Dependent Claim
97 words
A process for settling finely-divided mineralogical waste slime solids from a phosphate ore processing operation including colloidal argillaceous material from an aqueous suspension thereof which comprises adding to said suspension, in an amount effective to enhance the settling of said solids, at least one organic peroxide having a molecular weight not in excess of about 225 in an amount of at least about 10 lb per ton of suspended solids said organic peroxide being selected from the group consisting of urea hydrogen peroxide, peracetic acid, di-t-butyl peroxide, cumene hydroperoxide, t-butyl hydroperoxide, t-butyl per-2-ethyl hexoate, and t-butyl perbenzoate.
Claim 3
Dependent Claim
21 words
A process in accordance with claim 1 wherein said suspension contains from about 0.01 to about 35% by weight of solids.
Claim 4
Dependent Claim
24 words
A process in accordance with claim 2 wherein said argillaceous material is at least one clay of the group consisting of montmorillonite and attapulgite.
Claim 5
Dependent Claim
18 words
A process in accordance with claim 1 wherein said suspension is produced by a foundry sand washing operation.
Claim 6
Dependent Claim
28 words
A process in accordance with claim 4 wherein said suspension contains from about 0.2 to about 1.2 percent by weight of suspended bentonite, carbonaceous material and fine sand.
Claim 7
Dependent Claim
29 words
A process in accordance with claim 1 wherein said organic peroxide is added in an amount ranging from about 10 to about 150 pounds per ton of suspended solids.
Claim 8
Dependent Claim
17 words
A process in accordance with claim 6 wherein said suspended solids are substantially all -150 mesh material.
Claim 9
Dependent Claim
17 words
A process in accordance with claim 1 wherein urea hydrogen peroxide is added to said waste slimes.
Claim 10
Dependent Claim
16 words
A process in accordance with claim 1 wherein peracetic acid is added to said waste slimes.
Claim 11
Dependent Claim
16 words
A process in accordance with Claim 1 wherein di-t-butyl peroxide is added to said waste slimes.
Claim 12
Dependent Claim
16 words
A process in accordance with claim 1 wherein cumene hydroperoxide is added to said waste slimes.
Claim 13
Dependent Claim
16 words
A process in accordance with claim 1 wherein t-butyl hydroperoxide is added to said waste slimes.
Claim 14
Dependent Claim
17 words
A process in accordance with claim 1 wherein t-butyl per-2-ethyl hexoate is added to said waste slimes.
References Cited (Backward Citations)
US3053761A
Cited
US2947418A
Cited
US3450633A
Cited
US3530067A
Cited
US3680698A
Cited
US3634232A
Cited
US3763041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |