Patent US4863617A successfully refreshed from Google Patents.
US4863617A
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US
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Process and apparatus for separating solid-liquid compositions
Assignee: Coorstek KK
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Filing: 1988-11-25
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Granted: 1989-09-05
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Expires: 2008-11-25
Abstract
Abstract A process for separating of solid-liquid compositions, comprises providing a liquid to be filtered in a liquid container, circulating the liquid through the liquid container, through a ceramic filter and through a liquid cyclone, filtering fine particles contained in the liquid by the ceramic filter and separating aggregates or coarse particles contained in the liquid by the liquid cyclone. An apparatus for carrying out the process is also disclosed.
Inventors
- 👤 Yoshihisa Katoh
- 👤 Takashi Ogawa
- 👤 Yukihiko Nagao
- 👤 Mitsumasa Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:22
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/31; B01D29/35; B01D29/356; B01D36/00; B01D36/04; B01D36/045
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
A process for separating a solid-liquid composition, which comprises the steps of: providing a liquid to be filtered in a liquid container, the liquid containing fine particles and coarse particles or aggregates; circulating the liquid through the liquid container, through a ceramic filter and through a liquid cyclone in such a way that a residual portion of the liquid not filtered through the filter is repeatedly sent back into the liquid container; filtering fine particles contained in the liquid by the ceramic filter; and separating aggregates or coarse particles contained in the liquid by the liquid cyclone.
Claim 2
Dependent Claim
97 words
A process for separating a solid-liquid composition, which comprises the steps of: providing a liquid to be filtered in a liquid container, the liquid containing fine particles and coarse particles or aggregates; circulating the liquid through the liquid container, through a ceramic filter and through a liquid cyclone in such a way that a residual portion of the liquid not filtered through the filter is repeatedly sent back into the liquid container; filtering fine particles contained in the liquid by the ceramic filter; and separating aggregates or coarse particles contained in the liquid by the liquid cyclone.
Claim 3
Dependent Claim
19 words
A process according to claim 1, wherein the cyclone is located between the ceramic filter and the liquid container.
Claim 4
Dependent Claim
22 words
A process according to claim 1, wherein the cyclone is located downstream of the liquid container and upstream of the ceramic filter.
Claim 5
Dependent Claim
19 words
A process according to claim 3, wherein the cyclone is located downstream of a means for circulating the liquid.
Claim 6
Dependent Claim
24 words
A process according to claim 1, wherein the liquid cyclone consists of plural cyclones having a different separating ability with respect to one another.
Claim 7
Dependent Claim
14 words
A process according to claim 1, wherein the liquid comprises water or an oil.
Claim 8
Dependent Claim
18 words
A process according to claim 6, wherein the solid-liquid composition comprises a chemical composition or a food composition.
Claim 9
Dependent Claim
121 words
A process for separating a solid-liquid composition, comprising the steps of: (a) providing a solid-liquid at a source, wherein the composition contains fine particles and coarse particles or aggregates to be separated from the liquid; (b) circulating the solid-liquid composition from the source (i) through a filtration stage comprising a ceramic filter, to separate a filtrate portion of the liquid passing through the filter from fine particles collected by the filter and from a residual portion of the composition, and (ii) through a dynamic separation stage, to centrifugally separate coarse particles or aggregates from the residual portion; (c) returning the residual portion to the source, and (d) recirculating the residual portion from the source by separating step (b) at least once.
Claim 10
Dependent Claim
121 words
A process for separating a solid-liquid composition, comprising the steps of: (a) providing a solid-liquid at a source, wherein the composition contains fine particles and coarse particles or aggregates to be separated from the liquid; (b) circulating the solid-liquid composition from the source (i) through a filtration stage comprising a ceramic filter, to separate a filtrate portion of the liquid passing through the filter from fine particles collected by the filter and from a residual portion of the composition, and (ii) through a dynamic separation stage, to centrifugally separate coarse particles or aggregates from the residual portion; (c) returning the residual portion to the source, and (d) recirculating the residual portion from the source by separating step (b) at least once.
Claim 11
Dependent Claim
19 words
A process according to claim 8, further comprising the step of periodically adding additional solid-liquid composition at the source.
References Cited (Backward Citations)
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JPS5948646A
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US4464247A
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JPS61271096A
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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) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |