Gravity separation
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A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite) Open
It is well documented that flotation has high economic viability for the beneficiation of valuable minerals when their main ore bodies contain magnesium (Mg) carbonates such as dolomite and magnesite. Flotation separation of Mg carbonates …
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Conventional and recent advances in gravity separation technologies for coal cleaning: A systematic and critical review Open
"Affordable and clean energy" is enshrined in the UN Sustainable Development Goals (SDGs; #7) because of its importance in supporting the sustainable development of society. As an energy source, coal is widely used because it is abundant a…
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A Life Cycle Assessment of Silica Sand: Comparing the Beneficiation Processes Open
Silica sand or quartz sand is a mineral resource with a wide variety of application; glass industry, construction and foundry are the most common examples thereof. The Republic of Croatia has reserves of 40 million tons of silica sand and …
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Effect of pyrite content of feed and configuration of locked particles on rougher flotation of copper in low and high pyritic ore types Open
Misreported pyrite into copper concentrates dramatically declines copper grade and recovery. Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of tw…
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Separation of Fe-bearing and P-bearing Phase from the Steelmaking Slag by Super Gravity Open
The Fe-bearing phase and P-bearing phase were successfully separated from a steelmaking slag by the super gravity and the separated efficiency was improved with increasing the separated time. The P-bearing phase precipitating at 1663 K was…
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Separation of Monazite from Placer Deposit by Magnetic Separation Open
In this study, mineralogical analysis and beneficiation experiments were conducted using a placer deposit of North Korea, on which limited information was available, to confirm the feasibility of development. Rare earth elements (REEs) hav…
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Gravity separation by falcon concentrator- an over review Open
Over the last three decades, in order to reduce environmental issues of processing fine mineral separation methods such as flotation while decreasing capital cost, gravity separation has become significantly important. Falcon concentrators…
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Turbo‐Synergistic Oily Wastewater Remediation in Bio‐Inspired Cone Array Barrel Open
Oily wastewater discharge causes not only the pollution of environment but also the waste of resources. Existing technologies for wastewater remediation, such as membrane and particle methods, are variable and effective, but are difficult …
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Superconducting pulsating high gradient magnetic separation for fine weakly magnetic ores: Cases of kaolin and chalcopyrite Open
Superconduction was firstly combined into pulsating high gradient magnetic separation (PHGMS) technology to improve its separation performance for ultrafine magnetic particles. In this investigation, the superconducting PHGMS (SPHGMS) proc…
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Particulate flow modelling in a spiral separator by using the Eulerian multi-fluid VOF approach Open
The Euler-Euler model is less effective in capturing the free surface of flow film in the spiral separator, and thus a Eulerian multi-fluid volume of fluid (VOF) model was first proposed to describe the particulate flow in spiral separator…
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Beneficiation of Low-Grade Phosphate Deposits by a Combination of Calcination and Shaking Tables: Southwest Iran Open
Three quarters of the world’s phosphate deposits are of sedimentary origin and 75%–80% of those include carbonate gangue. In this study, carbonate sedimentary phosphate deposits of the Lar Mountains of southwest Iran are studied. These dep…
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Sustainable, Highly Efficient and Superhydrophobic Fluorinated Silica Functionalized Chitosan Aerogel for Gravity-Driven Oil/Water Separation Open
A superhydrophobic fluorinated silica functionalized chitosan (F-CS) aerogel is constructed and fabricated by a simple and sustainable method in this study in order to achieve highly efficient gravity-driven oil/water separation performanc…
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Beneficiation of a Sedimentary Phosphate Ore by a Combination of Spiral Gravity and Direct-Reverse Flotation Open
In China, direct-reverse flotation is proved to be applicable to most phosphate ores. However, because the ratio of froth product is generally high, current direct-reverse technology faces challenges in terms of high reagent consumptions a…
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Pre-Concentration of Vanadium from Stone Coal by Gravity Using Fine Mineral Spiral Open
Due to the low grade of V2O5 in stone coal, the existing vanadium extraction technologies face challenges in terms of large handling capacity, high acid consumption and production cost. The pre-concentration of vanadium from stone coal bef…
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Evaluation of Chromite Recovery from Shaking Table Tailings by Magnetic Separation Method Open
This study aimed to evaluate the chromite recovery from shaking table tailings of Forumad plant by a dry high-intensity magnetic separation. The average feed grade of chromium trioxide (Cr2O3) was 7.62% by XRF. Also, different mineral phas…
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Beneficiation and Purification of Tungsten and Cassiterite Minerals Using Pb–BHA Complexes Flotation and Centrifugal Separation Open
Pb–BHA complexes have been shown to be selective for the separation of tungsten and cassiterite minerals from calcium minerals. These minerals could be enriched synchronously to some extent using Pb–BHA complexes flotation. However, it is …
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Evaluation of flow characteristics in an onshore horizontal separator using computational fluid dynamics Open
In the petrochemical industry, separation of oil from water is a very important process. Wells produce mixtures of gas, oil, and water which undergo a primary stage of separation inside horizontal gravity separators. The performance of the…
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Characterization and Beneficiation Options for Tungsten Recovery from Yxsjöberg Historical Ore Tailings Open
Repositories of historical tungsten mining tailings pose environmental risks, but are also potential resources for valuable metals. They still contain large tonnages of useful minerals and metals, reflecting the inefficient extraction meth…
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Mineralogy and textural impact on beneficiation of goethitic ore Open
The effect of mineralogy and texture on the beneficiation of goethitic ores from two different origins is highlighted. Sample A having 54.47% Fe with 8.57% loss of ignition (LOI) indicates the presence of vitreous and ochreous goethite, ma…
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Enrichment of Nb and Ti from carbonatite pyrochlore ore via calcining-slaking followed by gravity separation Open
In this work, a novel process consisting of calcining-slaking followed by gravity separation for the enrichment of niobium (Nb) and titanium (Ti) from carbonatite pyrochlore ore was proposed, validated and compared with the current mainstr…
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The Behaviour of Rare Earth Elements from South African Coal Fly Ash during Enrichment Processes: Wet, Magnetic Separation and Zeolitisation Open
Rare earth elements (REEs) are essential raw materials in a variety of industries including clean energy technologies such as electric vehicles and wind turbines. This places an ever-increasing demand on global rare earth element productio…
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The role of enhanced desliming and gravity separation as a precursor to flotation in the upgrading of cassiterite from tailings Open
Due to the depletion of high-grade mineral deposits, there is increasing demand for the reprocessing of minerals from tailings dams. However, tailings reprocessing can present several challenges due to the presence of slimes: reduced selec…
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Numerical Simulation and Structural Optimization of the Inclined Oil/Water Separator Open
Improving the separation efficiency of the inclined oil/water separator, a new type of gravity separation equipment, is of great importance. In order to obtain a comprehensive understanding of the internal flow field of the separation proc…
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Sunflower protein enrichment. Methods and potential applications Open
A method to increase the protein content of sunflower meal was developed that uses a combination of milling, sieving and gravity tables to separate fractions with higher and lower protein content. The investigation allowed to compare diffe…
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Cassiterite recovery from a sulfide ore flotation tailing by combined gravity and flotation separations Open
Cassiterite (SnO2), which is the most important Sn-containing mineral, is extensively found in large quantities in discarded tailings.The recovery of cassiterite from discarded sulfide ore flotation tailings can reduce resource wastage and…
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An Study on Preparation and Utilization of Tourmaline from Tailings of an Iron-ore Processing Plant Open
This paper deals with a systematic research on preparation and utilization of tourmaline from tailings of an iron ore processing plant in Xinjiang, China. Tourmaline has the characteristics of piezoelectricity, thermoelectricity, spontaneo…
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Characterization and Separation Studies of a Fine Sedimentary Phosphate Ore Slime Open
Detailed characterization and recovery of apatite from a sedimentary phosphate ore slime of a gravity plant of Yichang, China, were investigated. The phosphate ore slime consisted mainly of apatite, quartz, dolomite, and clay. To start wit…
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Recovery of Rare Earth Elements Minerals from Iron-Oxide-Silicate-Rich Tailings: Research Review Open
The rapid depletion of high-grade rare earth elements (REE) resources implies that future supplies may be augmented with low-grade ores, tailings, and other unconventional resources to meet cut-off grades and, subsequently, supply demands.…
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Removal of Tramp Elements within 7075 Alloy by Super-Gravity Aided Rheorefining Method Open
An investigation was made on the super-gravity aided rheorefining process of recycled 7075 aluminum alloy in order to remove tramp elements. The separation temperatures in this study were selected as 609 °C, 617 °C and 625 °C. And the grav…
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An environmental procedure to extract titanium components and metallic iron from Ti-bearing blast furnace slag Open
An environmental procedure to extract titanium components and metallic iron from Ti-bearing blast furnace slag is accomplished via three steps, which are high-temperature modification, gravity separation and hydrometallurgy method. The beh…