Compendium of Tailings Management
Activities The study links to reclamation through its focus on water balance, which controls both the location of the forest/grassland ecotone and the special patterns of vegetation and carbon …
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Turbidity values in settling time for tailing slurries treated at
As an example, the dewatering of mineral tailings using CF process can be mentioned (Malíková et al., 2016). Several factors, such as the type and dosage of chemical agents, pH and mixing ...
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Chemical composition of coal tailings. | Download
Using Nalco-83370+ flocculent, a maximum settling rate of 0.3222 cm/s with a turbidity reduction ratio of 99.02% (having residual turbidity 41.7 NTU) could be achieved, while the Magna-1011 ...
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Effect of solution salinity on settling of mineral tailings by …
The settling rate and turbidity of MF treated tailings largely depend on solution salinity. The increased solution salinity can cause a more compressed molecular conformation of MF and dramatically reduce the electrostatic repulsion among the negatively charged solid particles and polymers, which enhances the settling of mineral tailings.
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Kidd, S. (2011) Table 2: Summary of standard parameter …
Turbidity Turbidity refers to how clear the water is. The greater the amount of suspended solids in the water, the murkier it appears and the higher the measured turbidity. High turbidity levels (>10 NTU) can modify light penetration and smother benthic habitats - impacting both organisms and eggs. Salmon Habitat: Year-round 18 oC 7-day moving
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Exploring the Coagulant Capability of Moringa oleifera …
oleifera seed powder as a primary coagulant for the treatment of gold mine tailings with respect to turbidity reduction, and the effect of varying pH on the coagulation process. The tailings sample used in the study was collected from an active mining operation in the Waiamu area, Cuyuni Mining District 4, Guyana; with the average
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minerals A New Procedure for Deep Sea Mining …
Through comparisons of the tailings disposal methods which exist in on-land mining and the coastal mining fields, a new tailings disposal procedure, i.e., the submarine–backfill–dam–reuse ...
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Compositional properties and geotechnical behavior of …
What are mining tailings' main chemical, mineralogical, physical, and geotechnical properties, and what potential applica-tions can be assessed based on these properties? To address this …
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Mechanisms for clay-polymer interactions in the treatment …
Enhancing solid-water separation is the key to water recovery and land reclamation from tailings, which is limited by the fine clay particles in MFT (Wang et al., 2024).Fig. 1 (b) shows a consolidated MFT cake after mechanical compression which mainly consists of clay particles. Solid particles with a size equal to or less than 44 μm are considered as fines (Alberta …
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Process effluents and mine tailings: sources, effects and
Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents that are generated in a mineral …
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The role of carbonate mineral dissolution in turbidity reduction in …
1. Introduction. Surface mining and subsequent crude oil extraction from the Canadian oil sands have produced over 1.25 billion m 3 of waste, known as tailings, which is being stored in tailings ponds (AER 2019).Tailings consist of sand, silt, and clay-sized particles and oil sands process-affected water (OSPW) that contains dissolved salts, naphthenic acids, …
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Acceptable NTU ranges for turbidity. | Download Table
Download Table | Acceptable NTU ranges for turbidity. from publication: Hyperspectral narrow wavebands selection for optimizing water quality monitoring on the Great Miami River, Ohio | Remote ...
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Study on the preparation of polysilicate ferric flocculant …
The high turbidity tailings water can be considered as a stable and dispersed colloidal system. The inorganic coagulant compresses the electric double layer on the surface of mineral particles to destabilize the colloidal particles, and promote the aggregation of fine particles to form larger particles to achieve settlement [41].
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MANAGEMENT OF TAILINGS: PAST, PRESENT AND …
mineral-rich tailings, such as coal tailings, mineral sands tailings, tailings from some oxide ores, and residue from the processing of bauxite, nickel laterite and oil sands, are difficult to dewater mechanically, particularly where the unstable, moisture-reactive sodium smectite clay mineral is present, even in small proportions.
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Experimental Study on the Thickening Characteristics of …
The regression models for overflow turbidity and underflow concentration of thickened ultrafine tailings both follow a polynomial 2D function, with correlation coefficients (R …
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Advancing sustainable and circular mining through solid …
When dam failure occurs, it usually leads to environmental pollution (Fig. 1 c-d), temporary/permanent mine closure and destruction of residential buildings (Fig. 1 e-f), and death of humans and animals (Wu, 2020, Yin et al., 2011).Literature indicated that 285 tailings dam failures have been recorded since 1910 with 2650 fatalities (Guimarães et al., 2022, Piciullo et …
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Towards a Circular Economy in the Mining Industry: Possible …
The mining industry is confronted with substantial challenges in achieving environmental sustainability, particularly regarding water usage, waste management, and dam safety. The increasing global demand for minerals has led to increased mining activities, resulting in significant environmental consequences. By 2025, an estimated 19 billion tons of solid …
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Effect of solution salinity on settling of mineral tailings by …
Request PDF | On Aug 1, 2013, Yaguan Ji and others published Effect of solution salinity on settling of mineral tailings by polymer flocculants | Find, read and cite all the research you need on ...
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What Are Acceptable Turbidity Levels in Chemical …
Turbidity tubes: Simple, visual tools for estimating turbidity levels in the field. Total Suspended Solids (TSS) measurement: A more labor-intensive method that involves filtering and weighing water samples. Regular calibration of instruments against known standards ensures consistent and reliable measurements over time. Acceptable Turbidity Levels
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Methods for the disposal and storage of mine tailings
Tailings storage facilities vary considerably in size, design, complexity and method of operation. These key factors are essentially influenced and controlled by regulatory bodies and company ...
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Increasing efficiency of thickener operation in concentrate plant …
The particle sizes of tailings are ultrafine in nature ranging from 1 to 45 m with a d 50 of around 7 m. It is important to mention that the iron ore tailings contain heterogeneous mixtures of iron oxides, silicates and aluminium-silicates. These tailings contain 40-50% (w/w) iron. The solid percentage in the tailings varies from 5 to 10% (w/w).
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Sustainable development principles for the disposal of …
Examines mining and mineral processing wastes with respect to sustainable development. Finds that there is still a need for collective agreement on standards of practise. Develops a set of principles and discusses implications for practise. Finds that future trends in mining and processing may compound the challenges. Emphasises the role of paste and …
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Thickener Control using Turbidity measurement.
Could anyone tell me any experience about controlling a thickener (minerals industry, tailings or concentrate) using turbidity measurements (or solids% measurements in the overflow)? In theory, this measurement could be used to modify the flocculant dosage (instead of using a ratio control: flocculant/mineral pulp) in order to optimize the ...
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Current state of fine mineral tailings treatment: A …
1.1. Fluid fine mineral tailings Fluid fine mineral tailings refer to a mixture of waste by-products generated when recovering useful and precious minerals, metals, and other resources from the ores using mineral processing and hydrometallurgical processes. After selective extraction and …
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(PDF) Towards a Circular Economy in the Mining Industry: …
The mining industry is confronted with substantial challenges in achieving environmental sustainability, particularly regarding water usage, waste management, and dam safety.
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Improving flocculation and dewatering performance of iron …
Dewatering of the final concentrate and tailings of the mineral processing plants is necessary owing to substantial quantities of water accompanied by the ore minerals. …
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Rheology applied to the environmental management of mineral tailings
Improper tailings management can lead to the release of millions of cubic meters of slurry (mineral pulp), and cause serious disasters, such as the Fundão tailings dam failure at the Samarco mine in Brazil on November 5 th, 2015 and the partial dam failure at the Tonglvshan mine in China on March 12 th, 2017 (Wise Uranium Project, 2017). As a ...
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The geomechanics of thickened and paste tailings
It is important that thickening should be targeted to achieve a concentration higher than the segregation threshold of the tailings slurry. This is particularly relevant for coarser grained …
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Optimising thickener efficiency
A turbidity sensor (Figure 1-'A') which is either positioned at a fixed height or attached to a motorised cable spool determines the turbidity of the process water. Used in a fixed height system, it can be used to initiate the reduction …
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Management of Tailings Facilities
Application of TSM is mandatory for MAC members for their operations in Canada. However, the Tailings Guide and the OMS Guide are designed to be stand-alone documents that can be …
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