Froth treatment tailings (FTT) are a specific type of tailings waste stream from the bitumen froth treatment process that contains bioavailable diluent: either naphtha or …

In fact, the general scheme for the management of tailings from ore flotation includes settling, size-based separation or classification using cyclones and storage in ponds in order to enable solid particles to settle with the supernatant wastewater sent to a stream after treatment if necessary or recycled in the process (Department of Industry ...

This process is both economically and environmentally effective in reducing acid-generating components of mine tailings. Heavy metal contamination from mine tailings presents a similar problem within the given ecosystem: soil degradation, water contamination, and negative biotic externalities can result from high concentrations of …

1. Introduction. Canada has the largest oil sands deposits in the world, and bitumen is commonly recovered by oil sands industry using the so-called Clark Hot Water Extraction Process, in which large amounts of hot, caustic water is used to separate bitumen from sands, resulting in the accumulation of fluid wastes referred to as oil sands …

At 0.8%Ni content, Sudbury Po contains 600 –800 kt Ni. Assuming 70% plant recovery and 9500 USD/t for the Ni. price in 2017 [ 35], Po tailings contain over 4 billion USD. Ni value. In addition ...

These tailings are then mixed with process water and chemical reagents to form a slurry, which is transported through pipelines to nearby tailings storage facilities . Subsequently, using pressure filtration or gravity, iron tailings are separated from process water, allowing the recycled upper layer of process water to be reintroduced into the ...

Permanent aquatic storage structure (PASS) is a Suncor-led research and technology development project focused on an accelerated dewatering process and treatment of fluid fine tailings creating a PASS lake …

Treatment of fluid fine tailings is a major issue in oil sands operation. There are two main goals in the treatment-1) minimize the volume of containment required for FFT by dewatering and 2 ...

Tailing, in context to mining, is defined as the waste or non-economic by-product generated during mining activities, processing of minerals, and other …

This process is typically referred to as Froth Treatment. Froth Treatment can be broken down into 4 basic steps: Add an appropriate amount of light hydrocarbon to the bitumen froth and mix …

Due to the large amount of tailings discharged from mining, tailing dams were built to deposit this kind of solid waste which is a common treatment (Kossoff et al. 2014).The accumulation of tailings in the dams not only occupies a large area of land including farmland and woodland (Yin et al. 2011) but also destroys the ecological …

Biological treatment processes are used to treat decant solution, or in some cases process solutions, but are normally not suitable as a direct tailings-treatment process. There are several possible configurations of biological treatment processes, with the general divisions being aerobic versus anaerobic and attached growth versus …

The Global Tailings Review convened by the United Nations Environment Programme (UNEP), the Principles for Responsible Investment (PRI) and the International Council on Mining and Metals (ICMM) launched the Global Industry Standard on Tailings Management. The Standard was developed by a multi-disciplinary Expert Panel, with …

Solution-treatment processes provide a system for limiting the environmental impact from acidic seepage. Treatment of uranium tailings solutions from evaporation ponds, underdrains, and surface seeps could aid in decommissioning active sites or be used as an emergency measure to avert possible uncontrolled discharges.

Tailings retreatment represents the greatest contribution to recycling by Pan African. By reprocessing waste rock and tailings to extract gold left behind during the initial mining process, we effectively reduce our environmental footprint while rehabilitating our tailings dams. Tailings are processed at Pan African's two state-of-the-art ...

This manuscript emphasizes use of basic treatment techniques and bioremediation mechanisms for dealing with pollutants from MT that target the …

Bio-augmentation followed by entrapment of the microbial community indigenous to tailings ponds can be a promising tailings water treatment technology. The bitumen extraction process from Athabasca oil sands ore produces large quantities of toxic processed water as tailings. The oil industry has reduced the demand for fresh water in …

Focusing on system performance, compliance with process and environmental requirements and long-term cost-effectiveness, we are able to meet the most demanding standards of reliability, safety and quality. Tailings pond water treatment for reuse or discharge; Gold / Silver cyanide solution treatment; Merrill-Crowe clarification filters

The tailings from the re-processing plant will be re-deposited in a new area far from urbanization, allowing for the rehabilitation of the real estate currently occupied by these historic tailings. The first step in the process involves a mild-regrind and mild acid leach of the tailings (pH 2.5 to 3.0) to dissolve up to 40% of the uranium.

The gold mining process involves crushing the ore into sand and dust to liberate and recover the gold. What's leftover is called tailings. Ballarat Gold Mine uses its robust management and monitoring processes to make sure its produced gold tailings comply with all license conditions and permits necessary for the safe storage of tailings.

A Tailings Solvent Recovery Unit(TSRU) is used to strip-off and recycle any residual solvent, prior to disposing the tailings in a storage pond. A Paraffinic Froth Treatment (PFT) facility produces a tailings stream that contains water, asphaltenes, fines solids, bitumen and residual solvent. Solvent content in the tailings can vary between 5 ...

Activation and utilization of mine tailings as feedstock for CO 2 mineralization and supplementary cementitious materials (SCMs) have attracted great interest in the mining and concrete industries. In this work, a state-of-the-art review on the two utilization strategies and associated activation and pre-treatment methods was provided, aiming at …

Phosphorus ore flotation tailings (POFTs) are an industrial solid waste generated in the process of phosphate mining, which contains a large number of Mg, Ca, and P resources. The sources, storage, hazards, and resource environment properties of POFTs were summarized, and the present situation of POFTs treatment and disposal …

Recycling and reuse of mine tailings through innovative approaches are already practiced in diverse sectors including mining (e.g., cemented paste backfill), …

There are various processes in management of mine tailings such as minimizing tailings production and increasing tailings reuse, adoption of a risk-based …

@article{osti_5599446, title = {Advanced membrane filtration process for treatment of uranium mill tailings wastewater}, author = {Van Tran, T and Shorr, J}, abstractNote = {Twenty-four inactive hazardous uranium mill tailings sites in the US were designated for remedial action to conform to the Uranium Mill Tailings Radiation Control Act of 1978.

This kind of concentration process mainly uses hydrocyclone and thickener to form a series of closed-circuit processes to obtain high concentrations. The concentrated product. 2) Tailings filter press process using a filter press. In the tailings treatment of gold mines, filter press dehydration is also used.

There are 2 types of Froth Treatment processes used in the oil sands: naphthenic and paraffinic. The difference lies in the type of hydrocarbon solvent used to dilute the froth. ... Steam is added to the columns to vapourize the solvent from the tailings stream, which is recycled back into the process. The final tailings stream is sent to the ...

Froth treatment tailings (FTT) are a specific type of tailings waste stream from the bitumen froth treatment process that contains bioavailable diluent: either naphtha or paraffins. Tailings ponds that receive FTT are associated with the highest levels of biogenic gas production, as diverse microbial communities biodegrade the residual diluent.

CPB is an engineered composite material produced with MPT, hydraulic binders and mixing water (Fig. 1).Before CPB preparation, the tailings slurry from the milling or processing operation needs to be dewatered as it contains dispersed particles that hinder the consolidation and strength gain of CPB (Bussière, 2007).Dewatering process …

In this study, a new flocculation process was developed for the treatment of oil sands tailings by using two oppositely charged polymers, i.e. an anionic polyacrylamide and a natural cationic biopolymer, chitosan. The new process was able to not only improve the clarity of supernatant after settling but also achieve a high settling efficiency.

The proposed model is a first step towards a more rational and quantitative approach to monitor and control treatment processes for oil sands tailings. Graphical abstract. Download : Download high-res image (228KB) ... this information is essential to determine the size and efficiency of a treatment process, such as large scale thickeners ...

Froth treatment tailings (FTT) are a specific type of tailings waste stream from the bitumen froth treatment process that contains bioavailable diluent: either naphtha or paraffins. Tailings ponds …

Some reviews include the alkali activation process involving different types of by-products and also tailings (Zhang 2013; Mehta and Siddique 2016; Kinnunen et al. 2018); others focus more on tailings recycling and then include the alkali activation as a treatment process (Kinnunen et al. 2018; Park et al. 2019); others bring a discussion …

Abstract. Phosphorus ore flotation tailings (POFTs) are an industrial solid waste generated in the process of phosphate mining, which contains a large number of …