CA1167574A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Recovery of particles rich in carbon from aqueous suspensions containing same
Assignee: Texaco Development Corp
•
Filing: 1981-07-23
•
Granted: 1984-05-15
•
Expires: 2001-07-23
Abstract
Abstract ABSTRACT Unconverted char in a mixture of particles formed in the partial oxidation of an ash-containing solid fuel is recovered by grinding the mixture and subjecting the ground material to froth flotation.
Inventors
- 👤 Charles G. Sengenberger
- 👤 Roger J. Corbeels
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-04 04:22
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/02; B; B03; B03B; B03B1/00; B03B9/00; B03B9/005; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/0043; B03D1/008; B03D1/02; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/50; C10J3/506; C10J3/52; C10J3/526; C10J3/72; C10J3/74; C10J3/78; C10J3/82; C10J3/84; C10J3/845; B03D1/08; B03D1/085; B03D2201/00; B03D2201/04; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/08; C10J2300/00; C10J2300/09; C10J2300/0903; C10J2300/0906; C10J2300/0913; C10J2300/093; C10J2300/0943; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/0969; C10J2300/0973; C10J2300/0976; C10J2300/18; C10J2300/1807; C10J2300/1846
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
54 words
A process for the production of particles rich in carbon from a mixture of particles produced by the partial oxidation of a solid carbonaceous fuel which com-prises grinding said particles to reduce their size and then subjecting the ground material to froth flotation treatment to produce a float fraction containing particles rich in carbon.
Claim 2
Dependent Claim
54 words
A process for the production of particles rich in carbon from a mixture of particles produced by the partial oxidation of a solid carbonaceous fuel which com-prises grinding said particles to reduce their size and then subjecting the ground material to froth flotation treatment to produce a float fraction containing particles rich in carbon.
Claim 3
Dependent Claim
23 words
The process of Claim 1 in which particles greater in size than 20 mesh are removed from the suspension prior to the grinding.
Claim 4
Dependent Claim
18 words
The process of Claim 1 in which the particles are ground to a size less than 60 mesh.
Claim 5
Dependent Claim
18 words
The process of Claim 2 in which the particles are ground to a size less than 100 mesh.
Claim 6
Dependent Claim
17 words
The process of Claim 1 in which the float fraction is returned to the partial oxidation zone.
Claim 7
Dependent Claim
85 words
A process for the gasification of a solid fuel which comprises subjecting a finely divided solid fuel ground so that at least 95% passes through a 14 mesh sieve to partial oxidation to produce a gas comprising carbon mon-oxide and hydrogen and containing entrained particles, collecting said entrained particles in water, grinding the collected particles to reduce their size, subjecting the ground particles to froth flotation to produce a float fraction and a residual fraction and returning the float fraction to the partial oxidation zone.
Claim 8
Dependent Claim
85 words
A process for the gasification of a solid fuel which comprises subjecting a finely divided solid fuel ground so that at least 95% passes through a 14 mesh sieve to partial oxidation to produce a gas comprising carbon mon-oxide and hydrogen and containing entrained particles, collecting said entrained particles in water, grinding the collected particles to reduce their size, subjecting the ground particles to froth flotation to produce a float fraction and a residual fraction and returning the float fraction to the partial oxidation zone.
Claim 9
Dependent Claim
20 words
The process of Claim 6 in which 100% of the finely divided solid fuel passes through a 20 mesh sieve.
Claim 10
Dependent Claim
23 words
The process of Claim 6 in which particles greater than 20 mesh size are removed from the collected particles prior to the grinding.
Claim 11
Dependent Claim
20 words
The process of Claim 8 in which the remaining collected particles are ground to a size less than 60 mesh.
Claim 12
Dependent Claim
20 words
The process of Claim 8 in which the remaining collected particles are ground to a size less than 100 mesh.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.