Re-Processing Gold Tailings in South Africa
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.
(PDF) Study on the setting characteristics of filling slurry …
The filling slurry prepared from the tailings of the tailing pond shows roughly the same change trend as the above slurry, but the change law is not obvious, which cannot be expressed by one kind ...
Filtered tailings versus thickened slurry: four case studies
Tailings slurry can be transported by gravity flow if the tailings storage facility (TSF) is sufficiently lower than the concentrator. Such gravity flow can be achieved in long …
Flow visualization simulation of cemented tailings backfill slurry …
1 INTRODUCTION. Back-filling method is able to control ground pressure and reduce tailings pond establishment, which is an important mineral resources green development method. 1-4 In the back-filling method, the transportation of the cemented tailings backfill slurry CTBS is crucial, and it is the primary factor affecting the efficiency …
Comparative experimental study on the harmless
The feasibility of the harmless treatment of cyanide tailings via ETC slurry electrolysis was preliminarily determined through experiments. This system required only the addition of NaCl and oxidized cyanides in cyanide tailings under the application of an electric field, and no harmful substances were generated in the process.
Treatment of coal tailings
Slurry tailings are usually the product of a de-sliming process in the coal preparation plant, where material below a size between 1 and 0.1 mm is separated. This sizing process is achieved using large quantities of circulating water, sometimes up to 10 m 3 /h of water for every tonne of fine raw coal to be removed, prior to the main gravity ...
MM
Applications. Mining and Mineral Processing, Highly Abrasive Slurries, SAG and AG mill Discharge Re-circulation duties, Cyclone Feed, Mine Refuse and Tailings, Industrial Processing, Coal and Power Plant Ash, Sand …
Tailings Dam Break: The Influence of Slurry with …
Through the experimental study, it is observed that, with the decreasing of slurry concentration, the impact force and velocity of slurry increased in varying …
How does mine tailings slurry solids concentration affect …
1. Introduction. Conventional surface impoundment retaining structures are designed to provide storage for both mine water and tailings. There are two major types of surface impoundments, namely water-retention type dams and raised embankment dams [Citation 1–3].These dams are different in the sense that water retention dams are …
Consolidation behavior of various types of slurry …
Tailings generated from mining activities are typically deposited hydraulically (i.e., as a slurry) in tailings storage facilities. Consolidation of mine tailings can take a very long …
RECYCLE OF GOLD MINE TAILINGS SLURRY INTO MCM-41 …
In this study, MCM-41 was prepared from the gold mine tailings slurry as an alternative silica source. The effects of the reaction time, temperature, and pH adjustments on the synthesis of MCM-41 were investigated. The optimum condition for the synthesis process of pure and highly ordered MCM-41 from tailings slurry was found to be at 30°C for 60 …
Processing complex slurries – Process productivity
Processing complex slurries. July 7th, 2020. The dilution alternative: Emerging options to improve how we process complex slurries. by Dr Chris Vernon. Pipeline transport of minerals and waste is a major component …
Recent practices in mine tailings' recycling and reuse
The first stage of brick production is the powdering of the mine tailings by grinding/crushing and then sifting them. After this process, the tailings are brought …
Tailings and their disposal in deep-sea mining
Mining will create a conti nuous flow of ore sediment . ... In the mining process a slurry of about 1000 m³ of water per hour, ... Slurry tailings from ore uplift need to be discharged at sea, ...
How to dewater tailings slurries with slimes and ultra-fines
Slimes and ultra-fines present a challenge to metallurgists and tailings engineers. Many have spent years thinking about alternative ways to store, process or dry this troublesome mining waste stream. The characteristic of many slimes streams can make tailings management, slurry storage and filtration very tricky.
Tailings | SpringerLink
The thickened tailings discharge and paste technologies remove a significant proportion of water from the tailings to produce a high-density slurry or paste (Brzezinski 2001; Environment Australia 1995; Williams and Seddon 1999). The water is removed from the tailings at or prior to the point of tailings discharge, and it is possible to create ...
How to reshape the future of tailings?
Mining involves processing of mined ore to capture valuable minerals, which in turn produces large volumes of tailings. The annual global tailings production is currently estimated to be at the range of 10-12 billion tons/annum and increasing. Therefore, it's important to reshape tailings management and accelerate the positive change.
Tailings: being clear on the opportunities and the risks
Creating and storing tailings is an integral part of mining operations. How to safely re-process or re-handle tailings is the topic of this blog. ... tailings are initially transported from the processing plant to the storage location by slurry pipeline or conveyor belt and are only compacted by the material deposited on top of the tailings ...
Tailings Transport System Design Using …
Typically, a tailings slurry transport system design is based on deterministic inputs: minimum and maximum bounded ranges or set values of the key criteria that are treated …
ICMM
About Tailings. Tailings is a common by-product of the metals and minerals recovery process. It usually takes the form of a liquid slurry made of fine metal or mineral particles and water – created when mined ore is crushed and finely ground in a milling process. From the mill, the tailings is typically pumped to storage facilities which are ...
Development of a full-scale flume test system for
To investigate the flow and depositional behavior of tailings slurry, a full-scale model test system capable of simulating the formation of tailings beaches was developed. An empirical formula for the beach slope was proposed, and the model flume was designed accordingly. The model system comprised four main components: the …
Dewatering of Fine Tailings for Disposal in Dams Using a
Dewatering tailings to higher grades than paste produces a stable deposit that typically does not require retention dams and is called a "dry stack." A proposal of different dewatering techniques applied in the fine tailings produced after final desliming phase, obtained from the treating of phosphatic ores, is the main objective of this work. …
Performance evaluation of Fe-based water treatment sludge …
Performance evaluation of Fe-based water treatment sludge for dewatering of iron ore tailings slurry using coagulation-flocculation process: Optimization through response surface methodology ... This phenomenon indicates that parts of H + ions have been consumed and adsorbed by negatively charged slurry particles over the process …
Process effluents and mine tailings: sources, effects …
Mine tailings include process-affected water, containing dissolved metals and ore processing reagents and fine-grained ground-up rocks after minerals of value …
THICKENED SLURRY DISPOSAL METHOD FOR PROCESS TAILINGS.
In this method the slurry is pumped into the disposal area periodically from various locations along the dike at a substantially higher solids content. Once the first layer of residue has dried sufficiently and gained adequate strength, a second layer is applied; this process is then repeated until the disposal area is full.
CFD simulation of tailings slurry thickening in a gravity thickener
Abstract. In the present study, the thickening process of tailings slurry in a gravity thickener is modelled using Computational Fluid Dynamics (CFD), with a focus on the effects of particle size and feed velocity. A Two-Fluid Model (TFM) is employed to describe the particle-fluid and particle-particle interactions while turbulence is described ...
Tailings.info Deposition Methods of Tailings
Deposition techniques. Tailings can be discharged using subaqueous (below water) or subaerial techniques (above the water line, on the ground or on the tailings beach) (DPI 2003). The choice between these methods can dramatically effect how the tailings deposit and settle within the impoundment. The tailings characteristics themselves can also ...
Improving flocculation and dewatering performance of iron tailings …
For increasing the slurry pH, a 50% NaOH solution was prepared and added to the thickeners feed stream. The operating data were collected when the process was deemed to have reached a steady state. Variation of slurry pH of the tailings thickeners before and after pH adjustment is shown in Fig. 4. The pH of thickeners increased from …
Processing complex slurries – Process productivity
This makes dealing with complex slurries risky and undesirable. Gaining greater understanding of your pipeline will give you better results and performance over its lifespan, reducing the need to turn to dilution. Mineral processing operations invest in installed pipeline and slurry approaches for many years.
Consolidation behavior of various types of slurry …
ratio between tailings and WRI on the volume gains or losses of tailings in the impoundment were studied. Inu-ences of the lling rate on the consolidation rate of tailings were examined. Finally, inuences of the assumption of instantaneous lling in simulations (i.e., no consolidation of tailings occurs during the lling process) compared to