A critical review on metallurgical recovery of iron from iron …
The chemical and physical properties of iron ore tailings are comprehensively examined in this review, and various beneficiation and metallurgical recovery techniques such …
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Dry Stacking of Filtered Iron Ore Tailings: Comparing On …
The iron ore tailings come from the Quadrilátero Ferrífero region, located in the province of Minas Gerais (southeast of Brazil). The material used herein passed through several dewatering/filtering processes and is composed of the products derived from two distinct phases; namely, 80% (% by dry mass) of a coarser material resultant from the ...
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Solutions to Mine Tailings
We offer a range of equipment for the classification and thickening of your tailings to help unlock the value in the tailings and ensure a safer mine for both the environment and your operations. ... Output Iron Ore (silica and alumina reduced from feed material increasing Fe content to …
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Tailings Filtration: Water Jet Spray Cleaning of a Blinded Iron Ore …
The global growth in demand for raw materials is leading to a continuous increase in the mining of ores and thus to an expanding volume of tailings to be stored. To ensure safer storage and an optimized recovery of process water, the tailings slurry is often thickened followed by filtration in filter presses and dry stacking. However, an increasing blinding effect during the …
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Reviews of the Process Mineralogy Characteristics and …
The comprehensive utilization technology of iron ore tailings has played an important role in the green mine construction and social and economic sustainable development in China. On these accounts of large emission, low scale utilization rate and complex composition of tailings and low added value of iron ore tailings based products, It has become an urgent objective …
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Thickened and Paste Tailings Pipeline Systems: Design
Thickened tailings are typically transported in laminar flow, but turbulent flow operation is possible for low yield stress mixtures, large diameter pipes and high operating velocities. Paste tailings …
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Reconstructed rheometer for direct monitoring of …
To further clarify the dewatering performance and torque evolution during the tailings thickening process, a self-made rake was connected to a rheometer to monitor the shear stress and torque. The dewatering performance of the total tailings was greatly improved to a solid mass fraction of 75.33% in 240 min. The dewatering process could be divided into …
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Paper: Thickening of iron ore tailings slimes using sub …
Abstract: This paper describes a field experiment of sub-aerial deposition of iron ore tailings slimes to study shrinkage characteristics of tailings under conditions of surface drying and lowered ground water level. The paper outlines site conditions and features of the test and describes instrumentation setup in detail. Material behaviour and climatic conditions were …
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An experimental study on the flocculating settling of unclassified tailings
The settling and thickening of tailings have become one of the main research directions for mine backfilling. Traditionally, the settling and thickening of tailings rely on gravity settling in the vertical sand silo. ... Eswaraiah et al. studied the settling characteristics of iron ore slurry with anionic, cationic, ...
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ASSESSMENT OF THICKENING TAILINGS AS A TOOL …
In this case, two different scenarios of an open-pit iron ore mine will be assessed. Stage 1 corresponds to the traditional tailings dumps and stage 2 with tailings thickening up to 70% before their final disposal. Even though one of the advantages of this technique is the
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Pore Structure Evolution and Seepage Characteristics in …
The tailing paste thickening technology was investigated to achieve goaf reduction treatment and tailing resource utilization of metal mines and reach the effect of controlling two hazards with one waste. However, superfine tailing particles could easily form suspended water-locking flocs in the thickening process, which seriously affected the …
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Microscale mechanism of tailing thickening in metal mines
A shearing seepage test of an unclassified tailing–sedimentation bed was performed with copper tailings, and the morphology and geometric distribution of micropores …
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Iron ore tailings dry stacking in Pau Branco …
There are various approaches for processing iron ore tailings to facilitate safe storage, such as filtration (Gomes et al. 2016;Mamghaderi et al. 2021) and thickening to paste-like consistency for ...
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Electroosmotic Dewatering of Iron Ore Tailings: A Laboratory …
In this study, the dewatering of an iron ore tailing by applying different voltages by the electroosmosis method was investigated in the laboratory environment. By discharging the water of the iron ore tailings by the electroosmosis method, the solid content was increased …
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A study on durability and strength properties of high …
Every year, million tonnes of iron ore tailings (IOT), are generated which are obtained at the time of processing of iron ore and are generally dumped in landfills, quarries, rivers, and seas, among other places, causing environmental issues.The primary goal of this research is to assess IOT as substitute for fine aggregates in concrete and compare the …
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The Composition and Performance of Iron Ore Tailings in …
Iron ore tailings (IOTs) are byproducts of the iron mining industry that have gained significant attention in recent years due to their potential for comprehensive utilization. This study investigates how blending steel slag with IOTs (a siliceous raw material) instead of lime (a calcareous raw material) affects slurry ing properties, mechanical properties, and reaction …
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Tailings Paste Disposal – More than Water Recovery
Paste thickeners thicken tailings to higher underflow solids concentrations than conventional and high-rate thickeners. For example, a tailings stream in an iron ore application could be thickened to 45-50% solids in conventional or high-rate thickeners. Conversely, the same tailings stream could be thickened to 65-70% solids using a paste ...
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Beginners guide to thickeners
Thickening is a process where a slurry or solid-liquid mixture is separated to a dense slurry containing most of the solids and an overflow of essentially clear water (or liquor in leaching processes). ... thickening through …
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Karara iron ore tailings partnership delivers multiple benefits
An innovative approach to design options for tailings thickening at Karara Iron Ore Project in Western Australia has resulted in lower overall cost, reduced thickener sizes and minimized site ...
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Basic characteristics and environmental impact of iron ore tailings
Iron ore tailings (IOTs) are the indusus solid waste discharged by concentrating mills after processing iron ores and selecting "valuable components" (Yao et al., 2020). In China, 600 million tons of IOTs are discharged every year and the IOTs deposition has reached 5 …
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Rheological characterization and performance of flocculants in iron ore
It has been estimated that around 400 kg of iron ore tailings per each ton of beneficiated iron ore is generated depending on the mineralogy and crystallinity of iron ore [2]. However, the management of IOTs carries grave importance both environmentally and economically. ... Aggregate densification in the thickening of flocculated suspensions ...
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PASTE THICKENING IRON ORE TAILINGS UPDATE
PASTE THICKENING IRON ORE TAILINGS UPDATE1 Steve Slottee2 Jerold Johnson3 Mark Crozier4 Abstract Paste thickening technology is rapidly emerging as an effective method for handling tailings for water recovery and as an alternative to conventional dams and ponds. This paper describes an example of the use of this technology on iron ore tailings.
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A study on durability and strength properties of high …
DOI: 10.1016/j.matpr.2022.05.163 Corpus ID: 249384945; A study on durability and strength properties of high strength concrete with partial replacement of iron ore tailings with fine aggregates
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Rheological characterization and performance of flocculants in iron ore …
Semantic Scholar extracted view of "Rheological characterization and performance of flocculants in iron ore tailings management" by R. Krishna et al. ... The tailing paste thickening technology was investigated to achieve goaf reduction treatment and tailing resource utilization of metal mines and reach the effect of controlling two hazards ...
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Mining Thickener
Capacity: 1.3-1140 t/24h Application: dewatering process of concentrates and tailings in the mineral processing plant. It is specifically designed for the mineral processing industry and tailing processing, such as concentration of gold, copper, ithium, iron ore, lead-zinc, feldspar, antimony ore, tungsten ore .
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CFD simulation of tailings slurry thickening in a gravity …
This study aims to model the thickening process of tailings slurry in a gravity thickener and distinguish the difference of particle dynamic behavior between different sizes of …
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The effect of residual flocculants in the circulating water on
To this end, inlet slurry to the tailings thickener of the Gol-e-Gohar iron ore processing plant was sampled for four days. Flocculant type (anionic, cationic, and nonionic polyacrylamide), their dosage (10–90 g/t), pH (1–12.5), solid content (5–23%), and for the first-time residual flocculant dosage in the circulated water were investigated.
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Critical State Analysis for Iron Ore Tailings with a Fine …
The formation of layering during the sedimentation process of tailings makes it of great significance to investigate tailings and to analyze their susceptibility to flow liquefaction. …
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Improving Flocculation Performance of Copper Flotation Tailings …
The dewatering of tailings is one of the serious challenges that the mining and mineral processing industries have encountered internationally. Solid–liquid separation methods are applied to wastewater, which generally consists of fine particles and water; fine particles are settled in thickeners by the flocculation method and the cleaned water is reused in the plants. …
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Effect of particle size distribution on the dewatering circuit …
Iron ore processing plants of the Gol-E-Gohar mining and industrial company have three thickeners. The thickeners' underflow's is pumped to a tailings dam, with the solid content of about 50%. To increase water recovery, this research investigated the effect of the particle size distribution on the dewatering circuit design of tailings.
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