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The concentrate from the second nickel scavengers will be recycled to the nickel flotation circuit. Tailings from the second scavenger will be directed to the tailings thickener. ... Thickener underflow will be …
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The aim of this paper is to address primary dewatering of nickel (Ni) slurry streams resulting from any form of aqueous processing. ... (Quast et al., 2014b), flotation testing also to reject a product with lower Ni values (Part 3) (Quast et al., 2014c), and this one which investigates the treatment of slurry streams generated by the previous ...
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before grinding, concentrate dewatering, tailings dewatering, tailings filling, and middling dewatering. 3.1.1. Gold and silver beneficiation. The content of gold in the ore was very low. In order to extract gold, it was necessary to crush and grind the ore and preconcentrate or separate gold from the ore by mineral processing. Flotation and
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APPENDIX URBAN AREA SLUDGE TREATMENT USING PRESSURIZED OXYGENATION-OZONATION, DISSOLVED GAS FLOTATION AND DEWATERING. Lawrence K. Wang and Mu-Hao Sung Wang, Lenox Institute of Water Technology.
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Improved tailing dewatering and sediment consolidation can be achieved by using a nonconventional method called superabsorbent (SAB) dewatering ([10]; F. [11, 16, 17]).SABs are high molecular weight hydrophilic, stimuli responsive polymers capable of absorbing large volumes of water or aqueous fluid within a short time [28].Some SABs …
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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. As a consequence, dewatering tailings to a paste or by filtration has conventionally been seen
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The aim of this paper is to address primary dewatering of nickel (Ni) slurry streams resulting from any form of aqueous processing. ... 2013) and selective flotation of nickel silicate from a ...
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The flotation of fine mineral particles is always a difficult problem. The flotation of fine arsenopyrite particles (−20 μm) in a sodium butyl xanthate (SBX) system was studied by using ...
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This paper is concerned with the recovery of nickel from a so-called nickel scavenger tailings (NST) feed. This feed contains the portion of the original rougher feed that is …
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Semantic Scholar extracted view of "Challenges in processing nickel laterite ores by flotation" by S. Farrokhpay et al. ... Preliminary dewatering studies. K. Quast J. Connor W. Skinner D. Robinson J. Addai-Mensah. Environmental Science, …
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The challenges in processing nickel laterite ores using flotation process were comprehensively reviewed. Literature shows that flotation has not been successful …
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4. Experimental procedure4.1. Preparation of flotation feed for preliminary testing. Samples of 2 kg SG laterite previously crushed to all passing 2 mm were slurried using 2 L of Adelaide tap water and stirred at 1200 rpm in a container for 10 min.After this time the slurry was wet screened at 600 μm, with the fines allowed to settle overnight …
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The main motivation of the study is to suggest proper reagent properties by which highest efficiency in both flotation and dewatering can be achieved. This can result in significant economic advantages for industrial processes and also reduce the environmental disadvantages of using chemicals. The flotation separation efficiency of …
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Flotation constitutes a separation process that originated from mineral processing. Nowadays, wider applications have been found and compared to flotation …
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Chemical and physical parameters used in coal dewatering affect the final coal moisture content of the dewatered cake. Chemical parameters include the addition of chemical agents and pH (Sung and Turian, 1994).The addition of optimum dosages of anionic or cationic flocculants can increase the dewatering efficiency and lower the …
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A Dewatering of flotation slimes and tailings on Belt Filter-Presses Unlike processes of clarification, during the Process of Dewatering slimes on Belt Filter-Presses the primary goal of polymer is to provide as much as possible a fast feedback of …
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However, energy savings may be realized when overall process improvements are considered (e.g., grinding, rheology, flotation, material handling, dewatering and tailings treatment). ... Bobicki et al. noted that if ultramafic nickel ore flotation pulp density could be increased from 20 to 30 wt %, as a consequence of improved slurry rheology ...
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Due to the limitation of freshwater sources and increasingly stringent disposal standards [13, 74, 79], the minerals industry has attempted to increase water use efficiency, reduce freshwater utilization, and minimize water discharge, or seek alternatives to fresh water [57, 59, 78, 84, 101].It is widely accepted that flotation is the most …
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Nickel compounds and catalysts are utilized in various chemical processes and industries. For example, nickel catalysts are employed in the production of petrochemicals, plastics, pharmaceuticals, and agricultural chemicals. Nickel compounds are also used in electroplating and as pigments in ceramics and glass. 5. Electronics …
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magnetite concentrate with nickel grade of 1.98% and recovery rate of 88.42% can be obtained by reduction roasting magnetic separation process. For the serpentine in laterite nickel mine, the cobalt bearing concentrate with Co grade of 0.17% and recovery rate of 23.17% can be obtained by positive and reverse flotation process. A chromium ...
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In the flotation process, a mixture of water, minerals, and a flotation agent (also known as a collector) is agitated to create a stable froth of bubbles. The flotation agent helps to form a stable froth of air bubbles, which attach to the mineral particles and cause them to rise to the surface, where they can be collected.
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The study has a specific focus on the impact of flocculants and coagulants as dewatering reagents present in recycled process water on solids recovery, water recovery, copper and nickel mineral recovery, copper and nickel mineral grade, residual concentrations of the collector post flotation are also determined as well as particle …
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Mineral processing - Dewatering, Filtration, Separation: Concentrates and tailings produced by the methods outlined above must be dewatered in order to convert the pulps to a transportable state. In addition, the water can be recycled into the existing water circuits of the processing plant, greatly reducing the demand for expensive fresh water. Filtration is …
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In order to increase the dewatering and filtration efficiencies in the plants, dewatering aids such as surfactants, polymers, and inorganic salts that can lower …
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Nickel laterite Flotation Collectors Classification Screening abstract The preconcentration of nickel (Ni) laterite ores ahead of Ni recovery by hydrometallurgical processing makes good economic ...
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For dewatering of flotation products, filtration is the most commonly used technology which uses various driving forces, such as vacuum, ... Saline water is widely used in flotation plants of a range of commodities such as coal and nickel in Australia and many other countries due to drought, scarcity of fresh water and stringent regulations on ...
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DOI: 10.1016/J.SEPPUR.2018.08.020 Corpus ID: 106390900; Influence of surfactant for improving dewatering of brown coal: A comparative experimental and MD simulation study @article{You2019InfluenceOS, title={Influence of surfactant for improving dewatering of brown coal: A comparative experimental and MD simulation study}, author={Xiaofang …
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Highlights High temperature experiments demonstrated that selective sulphidation is feasible. Sulphides were submicron in size but could be physically upgraded. Nickel sulphides responded to flotation and grades of 6–8% were achieved. Low nickel grade was due to fine particle entrainment. Low nickel recovery was due to issues with …
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The iron-to-magnesium ratio in the nickel concentrates destined for smelting is a key parameter that influences smelting temperature and slag viscosity (Mayhew et al. 2013; Senior and Thomas 2005 ...
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Dewatering of Copper Flotation Tailings: Effect of Feed Dilution on the Thickener Performance July 2018 Mineral Processing and Extractive Metallurgy Review 40(1):1-7
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In this study, the effect of purifying the nickel concentrate thickener overflow water with DAF on the metallurgical performance of nickel flotation was investigated. The target was to find out whether investing in DAF treatment would be technically and …
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The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most ...
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The depletion of high-grade ore resources and ongoing demand for mineral products has led to an increase in the exploitation of low-grade and complex ores, which often contain colloid clay particles (e.g., kaolinite) that are detrimental to flotation and dewatering unit operations in mineral processing. During flotation, clay particles …
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The extraction of nickel (Ni) from sulfide resources commences with flotation to produce a concentrate which is then smelted to produce a nickel-enriched …
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Flotation practice differs by geographical location. Bulk sulfide flotation is generally carried out on Western Australian nickel ores which tend to be low in copper and contain substantial ...
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Collectors and ing agents for flotation of copper sulfide minerals are often used in flotation of copper-nickel sulfide ores. A basic principle of determining the flotation process is to rather make copper enter the nickel concentrate, and avoid nickel entering the copper concentrate as much as possible. ... flotation machine, dewatering ...
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