Mature fine tailings density


The theory behind CT is to intersperse fines in a sand matrix. In Option 2, dynamic mixers can be used to mix feed with polymer flocculant, as shown in FIG 3B, where polymer flocculant solution is injected and mixed. In one embodiment, the polymeric flocculant and tailings mixture are mixed during transport through a pipeline by means of in-line static mixers. The TT is pumped to the deposition area and handled with the center-discharge thin-lift stacking technology. This was likely due to hindered settling with increasing solids content in the slurry. It is desirable to have all of the solids coarse and fine settle uniformly. The detailed description includes specific details for the purpose of providing a comprehensive understanding of the present invention. The process as claimed in claim 1, wherein the dosage of aqueous polymer flocculant ranges from about grams to about 1, grams per tonne of solids in the fluid fine tailings. Thus, the higher the yield stress, the stronger the sediment to resist deformation.
Mature fine tailings densityMature fine tailings density

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Bitumen is a complex and viscous mixture of large or heavy hydrocarbon molecules which contain a significant amount of sulfur, nitrogen and oxygen. Flocculants useful in the present invention are generally anionic, nonionic, cationic or amphoteric polymers, which may be naturally occurring or synthetic, having relatively high molecular weights. The coarse tailings are then subjected to a series of hydrocyclones, where the underflow containing the concentrated coarse tailings is mixed using one or more mixers with FFT e. Hence, the availability of sands restricts the CT production. In one embodiment, the flocculant comprises an aqueous solution of an anionic polyacrylamide. Gypsum a coagulant is added to the mixers and the CT is then deposited for dewatering in a deposition cell. The results shown in demonstrate that segregation could be significantly reduced when using a feed with a higher SFR 1. The fact that fluid fine tailings FFT behave as a fluid and have very slow consolidation rates significantly limits options to reclaim tailings ponds. Yield stress is a measure of the minimum stress required to deforin the sediment plasticity, i.
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The theory behind CT is to intersperse fines in a sand matrix. In Option 2, dynamic mixers can be used to mix feed with polymer flocculant, as shown in FIG 3B, where polymer flocculant solution is injected and mixed. The coarse tailings are then subjected to a series of hydrocyclones, where the underflow containing the concentrated coarse tailings is mixed using one or more mixers with FFT e. The tank had a height of 22 cm, with a diameter of 12 cm. The process as claimed in claim 1, wherein the aqueous polymeric flocculant is a high molecular weight anionic polymer. The effect of polymer dosages A1 on initial settling rates, sediment solids content, sediment yield stress and CST were also tested. Flocculants useful in the present invention are generally anionic, nonionic, cationic or amphoteric polymers, which may be naturally occurring or synthetic, having relatively high molecular weights. Hence, the availability of sands restricts the CT production. Gypsum a coagulant is added to the mixers and the CT is then deposited for dewatering in a deposition cell.
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Description:It was discovered that, when using a less dense feed e. The process as claimed in claim 1, wherein the aqueous polymeric flocculant is a charged or uncharged polyacrylamide. Fresh tailings used had a solids content ranging between about The flocculated materials flow by gravity into a deposition cell where the clear water is decanted at the toe of the deposit and recycled to the RCW ponds while the solids retain and continue to dewater and consolidate in the cell. In another embodiment, the polymeric flocculant and tailings mixture are mixed in a dynamic mixer. FIG 2 is a process flow diagram of the co-treatment of FFT with fresh oil sands tailings according to the present invention. Yield stress could depend on solids content and the structures of the flocs in the sediment. On the other hand, the co-treatment of FFT and Fresh Tailings using polymer does not need hydrocyclones. The process as claimed in claim 1, wherein the aqueous polymeric flocculant is a linear or branched high molecular weight polyacrylamide-sodium polyacrylate co-polymer.

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