Silica treated FFT has been demonstrated to enable self-weight consolidation. In situ polymerisation creates a continuous silica network within the fluid phase of the FFT that allows unrestricted water movement but prevents fines migration and blinding of drainage boundaries. Silica polymerisation modifies the rheological properties of FFT, imparting significant yield strength and consolidation benefits which are maintained throughout the dewatering process. To meet this challenge, in situ polymerisation of silica has been proposed as a low cost and practical method for treatment of fluid fine tailings. Management of fluid fine tailings (FFT) is an ongoing challenge to the mining industry.
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