CA2606312A1 - System and method for treating tailings - Google Patents
System and method for treating tailings Download PDFInfo
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- CA2606312A1 CA2606312A1 CA 2606312 CA2606312A CA2606312A1 CA 2606312 A1 CA2606312 A1 CA 2606312A1 CA 2606312 CA2606312 CA 2606312 CA 2606312 A CA2606312 A CA 2606312A CA 2606312 A1 CA2606312 A1 CA 2606312A1
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- tailings
- fine tailings
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- dewatered fine
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/04—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by extraction
- C10G1/045—Separation of insoluble materials
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- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Removal Of Specific Substances (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A system and a method for producing dewatered fine tailings from tailings resulting from a process for recovering bitumen from oil sand. The method includes separating the tailings into fine tailings and coarse tailings, partially dewatering th e fine tailings, chemically treating the partially dewatered fine tailings, and dewatering the chemicall y treated partially dewatered fine tailings in a high density thickener apparatus, thereby producing the dewatered fine tailings. The system includes an apparatus for separating the tailings into the fine tailings and the coarse tailings, an apparatus for partially dewatering the fine tailings, a chemical treatment subsystem for chemically treating the partially dewatered fine tailings, and a high density thickener apparatus for dewatering the chemically treated partially dewatered fine tailings to produce the dewatered fine tailings.
Claims (74)
1. A method of producing dewatered fine tailings from tailings resulting from a process for recovering bitumen from oil sand, the method comprising:
(a) providing the tailings, wherein the tailings are comprised of water, fine solid material and coarse solid material;
(b) separating the tailings into fine tailings and coarse tailings, wherein the fine tailings have a ratio by weight of coarse solid material to fine solid material of less than about 2 to 1, and wherein the coarse tailings have a ratio by weight of coarse solid material to fine solid material of at least about 20 to 1;
(c) partially dewatering the fine tailings to produce partially dewatered fine tailings, wherein the partially dewatered fine tailings have a solids content by weight of at least about 25 percent;
(d) reducing the pH of the partially dewatered fine tailings to less than about 6 in order to remove carbonate ions and bicarbonate ions from the partially dewatered fine tailings, thereby producing acidic partially dewatered fine tailings;
(e) adding calcium ions to the acidic partially dewatered fine tailings in order to facilitate cation exchange in the acidic partially dewatered fine tailings whereby the calcium ions are exchanged into the acidic partially dewatered fine tailings;
(f) increasing the pH of the acidic partially dewatered fine tailings to between about 6.5 and about 7.5, thereby producing neutralized partially dewatered fine tailings having a substantially neutral pH;
(g) adding a flocculant to the neutralized partially dewatered fine tailings;
and (h) dewatering the neutralized partially dewatered fine tailings in a high density thickener apparatus, thereby producing the dewatered fine tailings.
(a) providing the tailings, wherein the tailings are comprised of water, fine solid material and coarse solid material;
(b) separating the tailings into fine tailings and coarse tailings, wherein the fine tailings have a ratio by weight of coarse solid material to fine solid material of less than about 2 to 1, and wherein the coarse tailings have a ratio by weight of coarse solid material to fine solid material of at least about 20 to 1;
(c) partially dewatering the fine tailings to produce partially dewatered fine tailings, wherein the partially dewatered fine tailings have a solids content by weight of at least about 25 percent;
(d) reducing the pH of the partially dewatered fine tailings to less than about 6 in order to remove carbonate ions and bicarbonate ions from the partially dewatered fine tailings, thereby producing acidic partially dewatered fine tailings;
(e) adding calcium ions to the acidic partially dewatered fine tailings in order to facilitate cation exchange in the acidic partially dewatered fine tailings whereby the calcium ions are exchanged into the acidic partially dewatered fine tailings;
(f) increasing the pH of the acidic partially dewatered fine tailings to between about 6.5 and about 7.5, thereby producing neutralized partially dewatered fine tailings having a substantially neutral pH;
(g) adding a flocculant to the neutralized partially dewatered fine tailings;
and (h) dewatering the neutralized partially dewatered fine tailings in a high density thickener apparatus, thereby producing the dewatered fine tailings.
2. The method as claimed in claim 1 wherein the dewatered fine tailings have a solids content by weight of at least about 50 percent.
3. The method as claimed in claim 1 wherein the dewatered fine tailings have a ratio by weight of fine solid material to fine solid material plus water of at least about 0.45 to 1.
4. The method as claimed in claim 2 wherein the coarse tailings have a solids content by weight of at least about 60 percent.
5. The method as claimed in claim 1 wherein the high density thickener apparatus is comprised of a deep cone paste thickener.
6. The method as claimed in claim 5 wherein partially dewatering the fine tailings is comprised of partially dewatering the fine tailings in a conventional thickener apparatus.
7. The method as claimed in claim 1 wherein reducing the pH of the partially dewatered fine tailings is comprised of adding an acid to the partially dewatered fine tailings.
8. The method as claimed in claim 7 wherein the acid is sulphuric acid.
9. The method as claimed in claim 1 wherein increasing the pH of the acidic partially dewatered fine tailings and adding calcium ions to the acidic partially dewatered fine tailings is comprised of adding lime to the acidic partially dewatered fine tailings.
10. The method as claimed in claim 1, further comprising collecting carbon dioxide which evolves from the acidic partially dewatered fine tailings.
11. The method as claimed in claim 1 wherein separating the tailings into fine tailings and coarse tailings is comprised of passing the tailings through a cyclone apparatus, thereby producing the fine tailings as an overflow stream and producing the coarse tailings as an underflow stream.
12. The method as claimed in claim 11 wherein the cyclone apparatus is comprised of a first stage cyclone and a second stage cyclone.
13. The method as claimed in claim 12 wherein separating the tailings into fine tailings and coarse tailings is comprised of passing the tailings through the first stage cyclone, thereby producing a first overflow stream and a first underflow stream and passing the first underflow stream through the second stage cyclone, thereby producing a second overflow stream and a second underflow stream, wherein the fine tailings are comprised of the first overflow stream and the second overflow stream, and wherein the coarse tailings are comprised of the second underflow stream.
14. The method as claimed in claim 13 wherein dewatering the neutralized partially dewatered fine tailings in the high density thickener apparatus produces an underflow stream and an overflow stream and wherein the underflow stream is comprised of the dewatered fine tailings, further comprising combining at least a portion of the overflow stream with the first underflow stream before passing the first underflow stream through the second stage cyclone.
15. The method as claimed in claim 4, further comprising transporting the coarse tailings by a pipeline.
16. The method as claimed in claim 15, further comprising adding a flocculant to the coarse tailings at an upstream end of the pipeline in order to inhibit the separation of the fine solid material and the coarse solid material from the coarse tailings in the pipeline.
17. The method as claimed in claim 16, further comprising adjusting the solids content of the coarse tailings to no greater than about 70 percent by weight before transporting the coarse tailings in the pipeline.
18. The method as claimed in claim 16 wherein the coarse tailings are transported through the pipeline at a bulk fluid velocity of at least about 3 meters per second.
19. The method as claimed in claim 16 wherein transporting the coarse tailings through the pipeline is comprised of pumping the coarse tailings through the pipeline using a centrifugal pump.
20. The method as claimed in claim 4, further comprising depositing the dewatered fine tailings and the coarse tailings in a tailings disposal area.
21. The method as claimed in claim 20 wherein depositing the dewatered fine tailings and the coarse tailings in the tailings disposal area is comprised of depositing the dewatered fine tailings and the coarse tailings in the tailings disposal area in alternating layers.
22. The method as claimed in claim 21, further comprising collecting drained water which is drained over time from the dewatered fine tailings and the coarse tailings in the tailings disposal area.
23. The method as claimed in claim 22 wherein collecting drained water is comprised of providing the tailings disposal area with a drainage grid positioned in a lower portion of the tailings disposal area.
24. The method as claimed in claim 23 wherein collecting drained water is further comprised of providing the tailings disposal area with vertical drains extending substantially vertically in the tailings disposal area.
25. The method as claimed in claim 21 wherein the coarse tailings have a concentration of carbonate ions and bicarbonate ions, further comprising reducing the concentration of carbonate ions and bicarbonate ions in the coarse tailings before depositing the coarse tailings in the tailings disposal area.
26. The method as claimed in claim 25 wherein the coarse tailings have a substantially neutral pH when they are deposited in the tailings disposal area.
27. The method as claimed in claim 4, further comprising filtering the coarse tailings using a belt filter apparatus in order to produce dewatered coarse tailings.
28. The method as claimed in claim 27, further comprising adding a flocculant to the coarse tailings before filtering the coarse tailings.
29. The method as claimed in claim 27, further comprising combining the dewatered coarse tailings with the dewatered fine tailings to produce combined dewatered tailings.
30. The method as claimed in claim 29 wherein the dewatered coarse tailings have a solids content by weight of at least about 90 percent.
31. A method of producing dewatered fine tailings from fine tailings resulting from a process for recovering bitumen from oil sand, the method comprising:
(a) providing the fine tailings, wherein the fine tailings are comprised of water, fine solid material and coarse solid material and wherein the fine tailings have a ratio by weight of coarse solid material to fine solid material of less than about 2 to 1;
(b) partially dewatering the fine tailings to produce partially dewatered fine tailings, wherein the partially dewatered fine tailings have a solids content by weight of at least about 25 percent;
(c) reducing the pH of the partially dewatered fine tailings to less than about 6 in order to remove carbonate ions and bicarbonate ions from the partially dewatered fine tailings, thereby producing acidic partially dewatered fine tailings;
(d) adding calcium ions to the acidic partially dewatered fine tailings in order to facilitate cation exchange in the acidic partially dewatered fine tailings whereby the calcium ions are exchanged into the acidic partially dewatered fine tailings;
(e) increasing the pH of the acidic partially dewatered fine tailings to between about 6.5 and about 7.5, thereby producing neutralized partially dewatered fine tailings having a substantially neutral pH;
(f) adding a flocculant to the neutralized partially dewatered fine tailings;
and (g) dewatering the neutralized partially dewatered fine tailings in a high density thickener apparatus, thereby producing the dewatered fine tailings.
(a) providing the fine tailings, wherein the fine tailings are comprised of water, fine solid material and coarse solid material and wherein the fine tailings have a ratio by weight of coarse solid material to fine solid material of less than about 2 to 1;
(b) partially dewatering the fine tailings to produce partially dewatered fine tailings, wherein the partially dewatered fine tailings have a solids content by weight of at least about 25 percent;
(c) reducing the pH of the partially dewatered fine tailings to less than about 6 in order to remove carbonate ions and bicarbonate ions from the partially dewatered fine tailings, thereby producing acidic partially dewatered fine tailings;
(d) adding calcium ions to the acidic partially dewatered fine tailings in order to facilitate cation exchange in the acidic partially dewatered fine tailings whereby the calcium ions are exchanged into the acidic partially dewatered fine tailings;
(e) increasing the pH of the acidic partially dewatered fine tailings to between about 6.5 and about 7.5, thereby producing neutralized partially dewatered fine tailings having a substantially neutral pH;
(f) adding a flocculant to the neutralized partially dewatered fine tailings;
and (g) dewatering the neutralized partially dewatered fine tailings in a high density thickener apparatus, thereby producing the dewatered fine tailings.
32. The method as claimed in claim 31 wherein the dewatered fine tailings have a solids content by weight of at least about 50 percent.
33. The method as claimed in claim 31 wherein the dewatered fine tailings have a ratio by weight of fine solid material to fine solid material plus water of at least about 0.45 to 1.
34. The method as claimed in claim 31 wherein the high density thickener apparatus is comprised of a deep cone paste thickener.
35. The method as claimed in claim 34 wherein partially dewatering the fine tailings is comprised of partially dewatering the fine tailings in a conventional thickener apparatus.
36. The method as claimed in claim 31 wherein reducing the pH of the partially dewatered fine tailings is comprised of adding an acid to the partially dewatered fine tailings.
37. The method as claimed in claim 36 wherein the acid is sulphuric acid.
38. The method as claimed in claim 31 wherein increasing the pH of the acidic partially dewatered fine tailings and adding calcium ions to the acidic partially dewatered fine tailings is comprised of adding lime to the acidic partially dewatered fine tailings.
39. The method as claimed in claim 31, further comprising collecting carbon dioxide which evolves from the acidic partially dewatered fine tailings.
40. A method of producing dewatered fine tailings from partially dewatered fine tailings resulting from a process for recovering bitumen from oil sand, the method comprising:
(a) providing the partially dewatered fine tailings, wherein the partially dewatered fine tailings are comprised of water, fine solid material and coarse solid material, wherein the partially dewatered fine tailings have a ratio by weight of coarse solid material to fine solid material of less than about 2 to 1;
(b) reducing the pH of the partially dewatered fine tailings to less than about 6 in order to remove carbonate ions and bicarbonate ions from the partially dewatered fine tailings, thereby producing acidic partially dewatered fine tailings;
(c) adding calcium ions to the acidic partially dewatered fine tailings in order to facilitate cation exchange in the acidic partially dewatered fine tailings whereby the calcium ions are exchanged into the acidic partially dewatered fine tailings;
(d) increasing the pH of the acidic partially dewatered fine tailings to between about 6.5 and about 7.5, thereby producing neutralized partially dewatered fine tailings having a substantially neutral pH;
(e) adding a flocculant to the neutralized partially dewatered fine tailings;
and (f) dewatering the neutralized partially dewatered fine tailings in a high density thickener apparatus, thereby producing the dewatered fine tailings.
(a) providing the partially dewatered fine tailings, wherein the partially dewatered fine tailings are comprised of water, fine solid material and coarse solid material, wherein the partially dewatered fine tailings have a ratio by weight of coarse solid material to fine solid material of less than about 2 to 1;
(b) reducing the pH of the partially dewatered fine tailings to less than about 6 in order to remove carbonate ions and bicarbonate ions from the partially dewatered fine tailings, thereby producing acidic partially dewatered fine tailings;
(c) adding calcium ions to the acidic partially dewatered fine tailings in order to facilitate cation exchange in the acidic partially dewatered fine tailings whereby the calcium ions are exchanged into the acidic partially dewatered fine tailings;
(d) increasing the pH of the acidic partially dewatered fine tailings to between about 6.5 and about 7.5, thereby producing neutralized partially dewatered fine tailings having a substantially neutral pH;
(e) adding a flocculant to the neutralized partially dewatered fine tailings;
and (f) dewatering the neutralized partially dewatered fine tailings in a high density thickener apparatus, thereby producing the dewatered fine tailings.
41. The method as claimed in claim 40 wherein the partially dewatered fine tailings are froth treatment tailings.
42. The method as claimed in claim 40 wherein the partially dewatered fine tailings have a solids content by weight of at least about 25 percent.
43. The method as claimed in claim 42 wherein the dewatered fine tailings have a solids content by weight of at least about 50 percent.
44. The method as claimed in claim 42 wherein the dewatered fine tailings have a ratio by weight of fine solid material to fine solid material plus water of at least about 0.45 to 1.
45. The method as claimed in claim 42 wherein the high density thickener apparatus is comprised of a deep cone paste thickener.
46. The method as claimed in claim 42 wherein reducing the pH of the partially dewatered fine tailings is comprised of adding an acid to the partially dewatered fine tailings.
47. The method as claimed in claim 46 wherein the acid is sulphuric acid.
48. The method as claimed in claim 42 wherein increasing the pH of the acidic partially dewatered fine tailings and adding calcium ions to the acidic partially dewatered fine tailings is comprised of adding lime to the acidic partially dewatered fine tailings.
49. The method as claimed in claim 42, further comprising collecting carbon dioxide which evolves from the acidic partially dewatered fine tailings.
50. A system for producing dewatered fine tailings from fine tailings resulting from a process for recovering bitumen from oil sand, the system comprising:
(a) an apparatus for partially dewatering the fine tailings in order to produce partially dewatered fine tailings;
(b) a chemical treatment subsystem for chemically treating the partially dewatered fine tailings, the chemical treatment subsystem comprising:
(i) a station for reducing the pH of the partially dewatered fine tailings to less than about 6 in order to remove carbonate ions and bicarbonate ions from the partially dewatered fine tailings, thereby producing acidic partially dewatered fine tailings;
(ii) a station for adding calcium ions to the acidic partially dewatered fine tailings in order to facilitate cation exchange in the acidic partially dewatered fine tailings whereby the calcium ions are exchanged into the acidic partially dewatered fine tailings;
(iii) a station for increasing the pH of the acidic partially dewatered fine tailings to between about 6.5 and about 7.5, thereby producing neutralized partially dewatered fine tailings having a substantially neutral pH; and (iv) a station for adding a flocculant to the neutralized partially dewatered fine tailings; and (c) a high density thickener apparatus for dewatering the neutralized partially dewatered fine tailings to produce the dewatered fine tailings.
(a) an apparatus for partially dewatering the fine tailings in order to produce partially dewatered fine tailings;
(b) a chemical treatment subsystem for chemically treating the partially dewatered fine tailings, the chemical treatment subsystem comprising:
(i) a station for reducing the pH of the partially dewatered fine tailings to less than about 6 in order to remove carbonate ions and bicarbonate ions from the partially dewatered fine tailings, thereby producing acidic partially dewatered fine tailings;
(ii) a station for adding calcium ions to the acidic partially dewatered fine tailings in order to facilitate cation exchange in the acidic partially dewatered fine tailings whereby the calcium ions are exchanged into the acidic partially dewatered fine tailings;
(iii) a station for increasing the pH of the acidic partially dewatered fine tailings to between about 6.5 and about 7.5, thereby producing neutralized partially dewatered fine tailings having a substantially neutral pH; and (iv) a station for adding a flocculant to the neutralized partially dewatered fine tailings; and (c) a high density thickener apparatus for dewatering the neutralized partially dewatered fine tailings to produce the dewatered fine tailings.
51. The system as claimed in claim 50 wherein the station for reducing the pH
of the partially dewatered fine tailings is comprised of an apparatus for adding an acid to the partially dewatered fine tailings.
of the partially dewatered fine tailings is comprised of an apparatus for adding an acid to the partially dewatered fine tailings.
52. The system as claimed in claim 50 wherein the station for adding calcium ions to the acidic partially dewatered fine tailings and the station for increasing the pH of the acidic partially dewatered fine tailings are comprised of an apparatus for adding lime to the acidic partially dewatered fine tailings.
53. The system as claimed in claim 50 wherein the process for recovering bitumen from oil sand produces tailings and wherein the tailings are comprised of water, fine solid material and coarse solid material, further comprising an apparatus for separating the tailings into the fine tailings and coarse tailings.
54. The system as claimed in claim 53 wherein the apparatus for separating the tailings into the fine tailings and coarse tailings is comprised of a cyclone apparatus.
55. The system as claimed in claim 54 wherein the cyclone apparatus is comprised of a first stage cyclone and a second stage cyclone.
56. The system as claimed in claim 55 wherein the first stage cyclone and the second stage cyclone are configured so that the tailings are passed through the first stage cyclone, thereby producing a first overflow stream and a first underflow stream, so that the first underflow stream is passed through the second stage cyclone, thereby producing a second overflow stream and a second underflow stream, so that the fine tailings are comprised of the first overflow stream and the second underflow stream, and so that the coarse tailings are comprised of the second underflow stream.
57. The system as claimed in claim 56 wherein the high density thickener apparatus produces an underflow stream and an overflow stream, wherein the underflow stream is comprised of the dewatered fine tailings, and wherein the system is configured so that at least a portion of the overflow stream is combined with the first underflow stream before the first underflow stream is passed through the second stage cyclone.
58. The system as claimed in claim 53, further comprising a belt filter apparatus for dewatering the coarse tailings in order to produce dewatered coarse tailings.
59. The system as claimed in claim 58, further comprising a tailings mixing facility for mixing the dewatered coarse tailings with the dewatered fine tailings to produce combined dewatered tailings.
60. The system as claimed in claim 50 wherein the high density thickener apparatus is comprised of a deep cone paste thickener.
61. The system as claimed in claim 60 wherein the partial dewatering apparatus is a conventional thickener apparatus.
62. The system as claimed in claim 60 wherein the conventional thickener apparatus produces an underflow stream and an overflow stream and wherein the underflow stream is comprised of the partially dewatered fine tailings, further comprising a bitumen recovery apparatus for recovering bitumen from the overflow stream.
63. The system as claimed in claim 62 wherein the bitumen recovery apparatus is comprised of a froth flotation apparatus.
64. The system as claimed in claim 50, further comprising an apparatus for collecting carbon dioxide which evolves from the acidic partially dewatered fine tailings.
65. A method of disposing dewatered fine tailings and coarse tailings resulting from a process for recovering bitumen from oil sand, the method comprising:
(a) providing the dewatered fine tailings, wherein the dewatered fine tailings are comprised of water, fine solid material and coarse solid material, wherein the dewatered fine tailings have a ratio by weight of coarse solid material to fine solid material of less than about 2 to 1, and wherein the dewatered fine tailings have a solids content by weight of at least about 50 percent;
(b) providing the coarse tailings, wherein the coarse tailings are comprised of water, fine solid material and coarse solid material, wherein the coarse tailings have a ratio by weight of coarse solid material to fine solid material of at least about 20 to 1, and wherein the coarse tailings have a solids content by weight of at least about percent;
(c) providing a tailings disposal area; and (d) depositing the dewatered fine tailings and the coarse tailings in the tailings disposal area in alternating layers.
(a) providing the dewatered fine tailings, wherein the dewatered fine tailings are comprised of water, fine solid material and coarse solid material, wherein the dewatered fine tailings have a ratio by weight of coarse solid material to fine solid material of less than about 2 to 1, and wherein the dewatered fine tailings have a solids content by weight of at least about 50 percent;
(b) providing the coarse tailings, wherein the coarse tailings are comprised of water, fine solid material and coarse solid material, wherein the coarse tailings have a ratio by weight of coarse solid material to fine solid material of at least about 20 to 1, and wherein the coarse tailings have a solids content by weight of at least about percent;
(c) providing a tailings disposal area; and (d) depositing the dewatered fine tailings and the coarse tailings in the tailings disposal area in alternating layers.
66. The method as claimed in claim 65, further comprising collecting drained water which is drained over time from the dewatered fine tailings and the coarse tailings in the tailings disposal area.
67. The method as claimed in claim 66 wherein collecting drained water is comprised of providing the tailings disposal area with a drainage grid positioned in a lower portion of the tailings disposal area.
68. The method as claimed in claim 67 wherein collecting drained water is further comprised of providing the tailings disposal area with vertical drains extending substantially vertically in the tailings disposal area.
69. The method as claimed in claim 66 wherein the dewatered fine tailings have been subjected to chemical treatment to remove carbonate ions and bicarbonate ions therefrom.
70. The method as claimed in claim 69 wherein the dewatered fine tailings have been subjected to cation exchange whereby calcium ions have been exchanged into the dewatered fine tailings.
71. The method as claimed in claim 70 wherein the dewatered fine tailings have a substantially neutral pH.
72. The method as claimed in claim 71 wherein the coarse tailings have been subjected to chemical treatment to remove carbonate ions and bicarbonate ions therefrom.
73. The method as claimed in claim 72 wherein the coarse tailings have a substantially neutral pH.
74. The method as claimed in claim 65 wherein the alternating layers of the dewatered fine tailings and the coarse tailings have a thickness, and wherein the ratio of the thickness of the layers of the dewatered fine tailings to the thickness of the layers of the coarse tailings is less than about 0.5 to 1.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2606312A CA2606312C (en) | 2007-10-11 | 2007-10-11 | System and method for treating tailings |
| CA2707197A CA2707197C (en) | 2007-10-11 | 2007-10-11 | System and method for treating tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2606312A CA2606312C (en) | 2007-10-11 | 2007-10-11 | System and method for treating tailings |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2707197A Division CA2707197C (en) | 2007-10-11 | 2007-10-11 | System and method for treating tailings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2606312A1 true CA2606312A1 (en) | 2009-04-11 |
| CA2606312C CA2606312C (en) | 2011-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2606312A Expired - Fee Related CA2606312C (en) | 2007-10-11 | 2007-10-11 | System and method for treating tailings |
| CA2707197A Expired - Fee Related CA2707197C (en) | 2007-10-11 | 2007-10-11 | System and method for treating tailings |
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| Application Number | Title | Priority Date | Filing Date |
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| CA2707197A Expired - Fee Related CA2707197C (en) | 2007-10-11 | 2007-10-11 | System and method for treating tailings |
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| WO2011032258A1 (en) * | 2009-09-15 | 2011-03-24 | Suncor Energy Inc. | Process for flocculating and dewatering oil sand mature fine tailings |
| WO2014066974A1 (en) * | 2012-11-05 | 2014-05-08 | Suncor Energy Inc. | Tailings management techniques and sand dump operations for extraction tailings |
| US9068776B2 (en) | 2009-10-30 | 2015-06-30 | Suncor Energy Inc. | Depositing and farming methods for drying oil sand mature fine tailings |
| US9207019B2 (en) | 2011-04-15 | 2015-12-08 | Fort Hills Energy L.P. | Heat recovery for bitumen froth treatment plant integration with sealed closed-loop cooling circuit |
| US9404686B2 (en) | 2009-09-15 | 2016-08-02 | Suncor Energy Inc. | Process for dying oil sand mature fine tailings |
| EP2571610A4 (en) * | 2010-05-20 | 2016-08-10 | Suncor Energy Inc | Method and device for in-line injection of flocculent agent into a fluid flow of mature fine tailings |
| US9546323B2 (en) | 2011-01-27 | 2017-01-17 | Fort Hills Energy L.P. | Process for integration of paraffinic froth treatment hub and a bitumen ore mining and extraction facility |
| US9587177B2 (en) | 2011-05-04 | 2017-03-07 | Fort Hills Energy L.P. | Enhanced turndown process for a bitumen froth treatment operation |
| US9587176B2 (en) | 2011-02-25 | 2017-03-07 | Fort Hills Energy L.P. | Process for treating high paraffin diluted bitumen |
| US9676684B2 (en) | 2011-03-01 | 2017-06-13 | Fort Hills Energy L.P. | Process and unit for solvent recovery from solvent diluted tailings derived from bitumen froth treatment |
| US9791170B2 (en) | 2011-03-22 | 2017-10-17 | Fort Hills Energy L.P. | Process for direct steam injection heating of oil sands slurry streams such as bitumen froth |
| US10041005B2 (en) | 2011-03-04 | 2018-08-07 | Fort Hills Energy L.P. | Process and system for solvent addition to bitumen froth |
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2007
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Also Published As
| Publication number | Publication date |
|---|---|
| CA2606312C (en) | 2011-01-18 |
| CA2707197A1 (en) | 2009-04-11 |
| CA2707197C (en) | 2012-07-10 |
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