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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., 2015a–c) have been developed to enrich and separate nickel from laterite ore. As known, flotation is an effective technology and process for the preconcentration of nickel from nickel sulfide ...
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In this study, upgrading nickel by flotation in three laterite ore samples, limonite, saprolite and intermediate, from different geology zones, was investigated. It …
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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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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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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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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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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 results revealed that rheology, which is caused by pulp density, played a key role in flotation performance. The decline in density (from 40 wt % to 20 wt %) increased the nickel and copper recoveries …
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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 the volume of water discharged into the local river systems. ... Effects of froth on dewatering of flotation products. Dewatering is a solid ...
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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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At this stage, the mineral is mixed with water and wet milled to an optimal granulometry to achieve flotation. The flotation process yields two products, a concentrate and tail streams, that are sent to dewatering systems for water recovery. These systems usually include thickeners, hydrocyclones, and filters.
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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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In Europe, the battery regulation is pushing a recovery target of 95% for cobalt, copper, and nickel, and 70% for lithium by 2030. Mandatory recycled content of 12% Co, ... and challenges in the dewatering stage (Porvali et al., 2019, ... The flotation recoveries were calculated using Equation (1), where C is the mass of the concentrate, …
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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 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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The usual method of nickel extraction from sul Rde ores is through the production of nickel matte after enriching the nickel content of the ore. This is com-monly carried out by …
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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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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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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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At pH 7 and 10, the anionic polysaccharide pectin showed promising dispersant efficiency in flotation and the cationic protein protamine significantly improved kaolinite flocculation in...
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The experimental results show that new cyclone modifications have a potential in dewatering technology of flotation tailings. It appears that dewatering cyclones can be an approach on new tailings ...
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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 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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There is considerable interest in the development of new processes to extract the nickel from the oxidic nickeliferous laterite deposits, as the global nickel sulphide resources are rapidly becoming more difficult to access. In comparison to sulphide ores, where the nickel-containing mineral can be readily concentrated by flotation, …
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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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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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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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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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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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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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