tailings dewatering fine

Tailings Dewatering, Thickening & More - PHOENIX Process ...

For over 30 years, PHOENIX Process Equipment has been committed to producing the most efficient and reliable technology for tailings dewatering, liquid solid separation, fine particle wet classification and separation, slurry and sludge thickening, effluent water treatment, and water purification and …

Tailings Dewatering Technologies for Australian ... - ACARP

The objective of the study was to undertake a review of tailings dewatering technologies currently used in Australia and Overseas and technologies with the potential to improve tailings dewatering either from a quality (moisture and handleability) or commercial (costs per tonne of tailings) perspective. ... Disposal is either in fine tailings ...

Dual polymer flocculants for mature fine tailings dewatering

Rosalynn Loerke, Xiaoli Tan and Qi Liu, Dewatering of Oil Sands Mature Fine Tailings by Dual Polymer Flocculation and Pressure Plate Filtration, Energy & Fuels, 10.1021/acs.energyfuels.7b00938, 31, 7, (6986-6995), (2017).

Minerals | Special Issue : Dewatering of Fine Mineral Tailings

However, the conventional dewatering methods are often inefficient and/or unable to achieve acceptable sediment consolidation, especially for tailings rich in fine mineral particles, even after several years of dam impoundment.

Characterization and Centrifuge Dewatering of Oil Sands ...

Centrifuge Dewatering of Oil Sands Fine Tailings,in an oral examination held on August 12, 2013. The following committee members have found the thesis acceptable in form and content, and that the candidate demonstrated satisfactory knowledge of the subject material.

Dewatering Wet Tailings Generated From Oil Sands ...

Dewatering Wet Tailings Generated From Oil Sands Extraction ... about 1.6 barrels of the tailings form Mature Fine Tailings (MFT), which consist of residual bitumen, fine clays and water, take years to settle, and trap some of the process water, which cannot be recycled. ... at the University of Alberta proposed the project "Dewatering Wet ...

Tailings management - Alfa Laval

Tailings management Fine rejects / slime dewatering (water recovery, dry stacking) Tailings dewatering (water recovery, chemical recovery, dry stacking) Other decanter applications Solid-liquid separation and washing (replacement of thickeners / washers) Thickening of concentrate (thickener replacement) Concentrate dewatering (filter replacement)

Appendix N: Tailings and Rejects Management Plan

Dewatered tailings will be generated from the flotation circuit where coal fines are processed. The following provides an overview of the rate of tailings expected to be produced at Caval Ridge Mine, and a summary of the flotation circuit and the tailings dewatering process including the operation of …

Impact of flocculation-based dewatering on the shear ...

Fine tailings dewatering technologies. Physical–mechanical methods for dewatering oil sands fine tailings include centrifugation and thickening. In centrifugation operations, MFT is dredged from a tailings pond, diluted, and then mixed with a polyacrylamide flocculant.

Dewatering Behavior of Centrifuged Oil Sand Fine Tailings ...

of long time management of oil sand fine tailings. The main objective of this research was to investigate the dewatering behavior of centrifuged oil sand fine tailings for surface deposition using laboratory investigation program and numerical modeling. A material with 60% solids (e = 1.5) was obtained using a bench-scale centrifuge.

Accelerated Dewatering | Canada's Oil Sands Innovation ...

A method called Accelerated Dewatering is being piloted to cost effectively, and with minimal energy input, separate process water from large volumes of fluid fine tailings. A tailings pond includes the water, sand, clay and residual oil that is left over after oil sands processing.

Innovative Use of Screw Press Filtration in Tailings ...

Innovative Use of Screw Press Filtration in Tailings Dewatering Plant Design V J Absolon1 and D Nieuwkerk2 ABSTRACT Screw press technology is an innovative approach to tackling the growing pressure to conserve water and minimise the environmental impact of mineral tailings disposal.

(𝗣𝗗𝗙) Freeze-thaw dewatering of oil sands fine tails

Many of these fine tailings–management techniques involve some form of polymer or chemical addition to promote dewatering and strength gain to meet the regulatory requirements.

Oil sands fluid fine tailings dewatering using rim ...

Aug 19, 2014· Dewatering of fine tailings occurs very slowly. When first discharged in the pond, the very low density material is referred to as thin fine tailings. After a few years when the fine tailings have reached a solids content of about 30-35%, they are sometimes referred to as mature fine tailings (MFT).

The development of centrifugal separation technology for ...

Consolidated Tailings (CT), Decanter Centrifuges for the accelerated dewatering of fine tailings is seen by many as a leading solution to this issue. Decanter centrifuges have been used in oil sands treatment for over 30 years, but the application of this technology to tailings

Dewatering options for management of fine gold tailings in ...

Dewatering options for management of fine gold tailings JJ Moreno et al. in Western Australian Goldfields 414 Paste 2018, Perth, Australia reduced footprints and/or smaller embankment construction volumes can be realised (Fourie 2012).

Technical Guide for Fluid Fine Tailings Management

Technical Guide for Fluid Fine Tailings Management Table of Contents August 30, 2012 Page i Table of Contents 1 Introduction ..... .. 1-1

Laboratory device to characterize electrokinetic ...

Apr 04, 2015· The oil sands industry usually leads to the production of large quantities of mineral waste, such as fluid fine tailings (FFT), whose disposal is often challenging. Electrokinetic geocomposites (eGCPs) installed into the FFT disposal area may improve in situ dewatering, as eGCPs can drain water expulsed during FFT consolidation as well as impose a voltage across FFT to displace water by ...

Fine Flotation Tailings Dewatering: Reducing Water ...

concentration equipment. At this project, fine tailings dewatering, using the CX-Series filter, has offset a total of 15 % of the fresh process water consumption in the mill, equal to …

Dewatering of Oil Sands Mature Fine Tailings by Dual ...

The mature fine tailings (MFT) generated from oil sands operations in northern Alberta, Canada, is the most challenging mine tailings to dewater. The MFT forms a gel structure and takes decades to settle and release water. Dewatering of a MFT sample was investigated in this study with a two-stage polymer treatment protocol followed by pressure plate filtration.

Dewatering system to help improve mining tailings pond ...

Jan 14, 2014· Mining operations have historically relied upon tailings ponds for dewatering of fine fluid tailings, which can create environmental and operational capacity issues. The inefficiencies of tailings ponds require mine operators to secure more land and necessary regulatory approvals to …

Tailings - Wikipedia

Tailings do not have to be stored in ponds or sent as slurries into oceans, rivers or streams. There is a growing use of the practice of dewatering tailings using vacuum or pressure filters so the tailings …

Coal - ANDRITZ

Efficient fine and coarse dewatering. Producers of all sizes depend on our solutions to achieve continuous, efficient operations in dewatering, thickening, and tailings. Examples range from world-leading companies like Exxaro, Anglo Coal, and Jindal, to …

Dewatering options for management of fine gold tailings in ...

Apr 13, 2018· Dewatering tailings prior to disposal may prove a good alternative since, if correctly designed, a reasonably steady flow with consistent reduced water content can be expected from the thickeners or filters. Nonetheless, there is a perception that dewatering could add significant capital expenditure and complexity to the project.

Rapid dewatering of oil sand mature fine tailings using ...

Novel method of dewatering and densifying oil sands mature fine tailings (MFT) developed. Super absorbent polymer (SAP) can significantly dewater and densify the MFT. Rapid and significant dewatering as well as increase in strength and solids content of MFT can be achieved.

PROCESS FOR FLOCCULATING AND DEWATERING OIL SAND …

Mar 22, 2018· A process for dewatering oil sand fine tailings is provided and comprises a dispersion and floc build-up stage comprising in-line addition of a flocculent solution comprising an effective amount of flocculation reagent into a flow of the oil sand fine tailings; a gel stage wherein flocculated oil sand fine tailings is transported in-line and subjected to shear conditioning; a floc breakdown ...

NEW APPROACH ON FLOTATION TAILINGS DEWATERING …

technological tailings parameters are determined. The flotation tails is relatively fine product – 85 % below 0.200 mm. The tailings slurry capacity is 270 m3/h at 18 Wt % solids. Dewatering tests of the technological waste were performed with laboratory prototype separator Linatex HK40, production of Weir Minerals Company.

Polymer Nanofibers for Rapid Dewatering of Fine Tailings ...

Aug 29, 2017· Most of these processes are very costly and the dewatering efficiency is poor. Recently, chemical/biological treatments have been suggested, but these methods require increased robustness and efficiency. University of Alberta inventors have developed a method to rapidly dewater the fine tailings.