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Sulfide ores are crushed and ground in order to liberate nickel minerals by selective flotation, in place of, or in conjunction with magnetic separators. After that, nickel concentrate (containing 6–20% Ni) can be collected. ... Wang et al. [66, 67] proposed a new process route for treatment of nickel complex minerals. Ionic liquids were used ...
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The reagent practice in the flotation of nickel and copper–nickel ores depends on three basic factors: mineralogy of the ore, flowsheet employed in the treatment of a specific ore, and degree of ...
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2. Laboratory investigations into direct leaching of nickel sulfide concentrates. Laboratory investigations into direct hydrometallurgical processing of nickel sulfide flotation concentrates have been carried out in response to the technical and environmental hurdles presented by the traditional concentrate smelting-matte refining …
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The flotation results indicate that the flotation process is selectively upgrading the nickel sulphides, with the highest-grade material achieved at the beginning of the …
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4 CESL Nickel Process The CESL Nickel Process offers a method of unlocking the nickel from disseminated nickel sulphide ore bodies. It is capable of treating lower grade nickel concentrates and those with a high content of magnesia. The process can also treat bulk nickel-copper-cobalt concentrates with no need for metal
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Electroflotation, a rather unconventional flotation technique used in effluent treatment, has been examined for the recovery and separation of magnesium carbonate fines [35]; in this category belong magnesite MgCO 3 and dolomite CaMg(CO 3) 2.It was found that that carboxymethyl-cellulose and sodium hexametaphosphate as modifiers …
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the flotation-smelting-matte refining process for treatment of nickel sulfide ores is presented in Figure 1. There is great deal of variation in the standard flow sheet with respect to flotation practice (i.e. mineralogy, liberation size, reagents, etc.) and ... Starting from a nickel flotation concentrate of grade 5– 20% Ni, smelting and ...
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Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) From Table 1, the Ratio of Concentration can be calculated as F/C = 100/10 = 10. If only assays are available, the ratio of concentration equals (20 – 0.1)/(2.09 – 0.1) = 10 ...
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The use of power ultrasound in mining. L. Gaete-Garretón, in Power Ultrasonics, 2015 35.5.1 The flotation process. One of the most used processes to concentrate mineral from a mine is flotation. To perform a flotation process the mineral is finely ground (particle sizes between 50 and 150 μm), then the ground mineral is mixed with water in a …
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The optimal flotation conditions were determined using the separation efficiency (SE), which was calculated using the following expression. (1) S E = R float-R sink Here, R float and R sink are the recoveries of floated and sink fractions, respectively. The grade and recovery percentages of the float fraction were then improved via …
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The Platsol™ process was originally developed in Canada for the treatment of flotation sulfide concentrate for Polymet Mining Company in Minnesota and subsequently tested on other PGM concentrates. This process involved codissolution of base metals (copper and nickel), gold, and PGMs via addition of chloride to the autoclave.
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This study provides new insights for the treatment of copper–nickel sulfide ore to enhance the grinding and flotation process. Keywords: microwave treatment ; copper–nickel sulfide ore ; …
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Selective flocculation can help to enhance flotation performance of laterite ore. The challenges in processing nickel laterite ores using flotation process were …
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Gordon Process in 1955 was carried out by Totlani and Balachandra (1969) who studied ammonia pressure leach-ing of a copper-nickel concentrate containing 6.8% Ni and 4.5% Cu, copper being present as chalcopyrite (CuFeS 2), and nickel being present in …
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nickel sulfides; hydrometallurgy 1. Introduction The extraction of nickel from sulfidic resources was described in Part I where it was shown that direct hydrometallurgical processing of nickel sulfide flotation concentrates has several distinct advantages over pyro-metallurgy.
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Introduction Different sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Selebi-Phikwe ore body, pentlandite–pyrrhotite–chalcopyrite co-occur and there is the constraint of fine pentlandite dissemination in the pyrrhotite, so that liberation is limited. In the presence of …
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To see the effect of closed water circulation on metallurgical performance, flotation tests were carried out with nickel concentrate thickener overflow water before and after the process of water purification by dissolved air flotation (DAF).
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Using a new patented process for removing oxidation products from the surfaces of sulphides, the flotation of ultrafine nickel minerals has been raised markedly …
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The practical aspects of lime dose locations and the most common sulphide flotation process applications are also discussed. ... the separate treatment of an ore type containing problematic ... J., Xu, M., 2016. Method for improving selectivity and recovery in the flotation of nickel sulphide ores that contain pyrrhotite by exploiting the ...
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The flotation treatment of nickel–copper sulphide ore at the Western China nickel mine has historically been difficult due to the presence of large amounts of serpentine minerals.[1] ... The effects of configuration of the stirred tank and energy input on the flotation performance of nickel ores were systematically investigated in this paper ...
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Keywords: ion flotation, heavy metals, rare earth metals, waste water, preconcentration 1. Introduction Flotation, a process originating from the minerals industry, has nowadays found extensive use in wastewater treatment and has been employed to separate heavy metals from a liquid phase using
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The second stage of froth flotation produces a nickel concentrate of 10-20% Ni, along with other by-products and gangue. ... and can be difficult to process with conventional flotation and smelting technologies. ... the carbonyl (or Mond) process: the copper and precious metals remain as a pyrophoric residue, which requires separate …
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an environmentally friendly electrowinning process by significantly reducing nickel emissions and notably improving working conditions for operators. This technology also reduces operating costs and enables fully automated process and oxygen recovery from the electrowinning process. Nickel and cobalt sulfate production for battery
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gangue minerals, thus leading to nickel loss. Flotation Practice in Nickel Sulde Deposits Nickel sulRde minerals such as pentlandite can, in general, be separated from their gangue by Sotation using a thiol group of collectors like xanthates and alkyl dithiophosphates in the presence of variety of activators, depressants and dispersants. Since ...
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There were some problems,such as low-grade copper concentrate,nickel concentrate containing high copper,higher reagents dosage,poor separation efficiancy,etc.,during copper nickel separation of flotation process on sulfide nickel copper ore in Xinjiang Yakesi resource development incorporated company,Hami district,Xinjiang Uygur …
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Industrial wastewater treatment containing heavy metal ions has been a challenge in the ion flotation process development in recent years due to the high collector consumption required to achieve maximum ion removal. ... The use of FGO in the ion flotation process for wastewater treatment offered significant benefits, including high …
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Farrokhpay and Filipov [15] suggested the use of a dual aggregation and flotation process to concentrate a nickel laterite ore by floc flotation. The pre-adsorbed collector in the particle surface ...
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The ion flotation process showed low-energy consumption, limited volume demands, reduced sludge volumes, and selective treatment 96. The precipitation flotation process is basically a chemical ...
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Chemical and mineralogical characterizations revealed that after DAF treatment, the process water contained fewer metal hydroxides and less fine-grained silicate mineral particles, which is most likely the reason for the improvement in the nickel flotation performance. Based on the feasibility study, improved nickel recovery by DAF …
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The process exploits the particle size dependence of nickel sulphide flotation and the different ways that pH change and pulp density influence the response of coarse and fine particles ...
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In the original studies, ion flotation was mostly used for pre-concentrating precious metals from dilute solutions. To date, the ion flotation method has also been applied for wastewater and water treatment, 10–12 recovery of precious metals, 13,14 pre-concentrating of rare earth elements, 15,16 and selective separation of multicomponent …
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The advantages of removing Cu by the ECF process are that no chemical agents are required, the pollutant in the water is removed by gas bubbles generated during the process, and the treatment is ...
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Nickel sulfide ore generally contains copper, so it can also be called copper-nickel sulfide ore. This type of ore is mostly magma-melted copper-nickel ore. When the nickel content is above 3%, it is called rich ore and can be directly smelted. When the nickel content is less than 3%, it needs to be purified by beneficiation method. At …
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1. Introduction. Waste printed circuit boards (WPCBs) contain many metals, such as copper, tin, lead, nickel, silver, gold [1].Due to the limited reserves and increasing consumption of resources, the recycling and utilization of valuable metals from WPCBs have become a hot topic in the past two decades [2], [3], [4], [5].The recycling methods …
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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 to recover nickel from laterite ores. ... The FeO content of the ore was 5.15%, and this was increased to 20.15% by the above treatment, with a recovery rate of 71.08%. View all …
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Flotation constitutes a separation process that originated from mineral processing. Nowadays, wider applications have been found and compared to flotation for water and wastewater treatment.
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The extraction of nickel from sulfidic resources was described in Part I where it was shown that direct hydrometallurgical processing of nickel sulfide flotation concentrates has …
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