— The effect of the depressant galactomannan (KGM) on the depression of talc and the flotation of a nickel–copper sulfide ore have been investigated through microflotation, batch flotation and industrial flotation tests, zeta potential and infrared spectrum measurements. The flotation results indicated that KGM had a straining …
WhatsApp: +86 18221755073
In this study, the robust Taguchi experimental design method was used to determine the optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore. The parameters investigated include collector dosage, percentage solids, depressant dosage and pH. The effects of these parameters at three different levels ...
WhatsApp: +86 18221755073
— In this study, two new variants of the recurrent neural network (RNN) method were used to predict the copper ore flotation indices, i.e., grade and recovery within different operating conditions. The model input parameters including pulp pH and solid content as well as frother and collector dosages were first analysed and then optimized …
WhatsApp: +86 18221755073
— The effect of the depressant galactomannan (KGM) on the depression of talc and the flotation of a nickel–copper sulfide ore have been investigated through microflotation, batch flotation and industrial flotation tests, zeta potential and infrared spectrum measurements. The flotation results indicated that KGM had a straining …
WhatsApp: +86 18221755073
— Nickel, copper, cobalt, iron, ... 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. The enriched concentrate contains fuel composition in the form of iron sulfide, which ...
WhatsApp: +86 18221755073
— A nickel-copper sulfide system usually coexists with serpentine in deposits. Low nickel-copper recovery and high content of serpentine in concentration adversely affects subsequent metallurgical …
WhatsApp: +86 18221755073
This paper presents the influences on the entrainment of serpentines by grinding and reagents during copper–nickel sulfide flotation. The previous bench flotation tests were performed to extract the … Expand
WhatsApp: +86 18221755073
— Overall, copper had higher flotation rates in comparison to nickel at both 25 ℃ and 60 ℃. On comparing the flotation rates for copper, generally the flotation rates were higher at 25 ℃ than at 60 ℃. The flotation rates of copper at both 25 and 60 ℃ are within a small range of 0.46–0.55 min −1.
WhatsApp: +86 18221755073
The maximum copper and nickel recoveries in the 7 cm impeller tests were observed at 93.1% and 72.5%, respectively. However, a significant decrease in the flotation rate of nickel was observed, due to entrainment of nickel in copper concentrate and the slime coating of gangue minerals on the nickel particle surfaces.
WhatsApp: +86 18221755073
— The valuable minerals in copper and nickel sulphide minerals can be easily oxidized and lead to the reduction of flotation recovery. To solve the problem, the reaction mechanism of the hydroximic ...
WhatsApp: +86 18221755073
— The rougher flotation and closed-circuit flotation tests of copper-nickel sulfide ore (1.0 kg) were performed on XFD-63 type flotation machines of different capacities (3.0 L, 1.0 L, obtained from Wuhan Exploration Machinery Co., Ltd.) [5], with mechanically stirring speed of 1610 rpm.The 3.0 L cell was used for rougher and scavenger stages, …
WhatsApp: +86 18221755073
— The extraction of nickel (Ni) from sulfide resources commences with flotation to produce a concentrate which is then smelted to produce a nickel-enriched phase called matte, and further refined to …
WhatsApp: +86 18221755073
Most of the world's nickel is extracted from the mineral pentlandite, (Ni, Fe)9S8, which frequently occurs in ores containing predominantly pyrrhotite and various non-sulRdes, some of which contain magnesium (Table 1). The nickel content in such sulRde ores is generally low (0.2}3%) and varies from place to place in the same deposit. The low …
WhatsApp: +86 18221755073
— Recovery was 59.9% to a concentrate assaying 20.9% Ni and having an Fe. : MgO of 2.77.. More than 70% of the nickel loss was to the so-called sands tailings which was a combination of tailings from sands rougher–scavenger flotation and …
WhatsApp: +86 18221755073
— ABSTRACT. The extraction of nickel (Ni) from sulfide resources commences with flotation to produce a concentrate which is then smelted to produce a nickel-enriched phase called matte, and further refined to produce pure Ni products as well as by-products, such as cobalt (Co), copper (Cu) and precious metals.
WhatsApp: +86 18221755073
— The effect of microwave treatment on the grinding and flotation performance of a typical copper–nickel sulfide ore was evaluated, based on the determination of its microwave absorption capability, grinding and flotation indexes such as crack percentage, mineral liberation degree, particle size distribution, relative work index (RWI), metal …
WhatsApp: +86 18221755073
— Copper and nickel minerals are separated by sequential flotation. Copper is floated first, and the copper scavenger tails is the feed to nickel flotation. Finally, …
WhatsApp: +86 18221755073
— The principal technological scheme of flotation includes copper–nickel and nickel–pyrrhotite flotation cycles, the selection of a copper–nickel concentrate into a …
WhatsApp: +86 18221755073
— Heavy metal contaminated waters are a significant environmental hazard, which require novel treatment methodologies. Further, the metals which might be recovered from these streams have …
WhatsApp: +86 18221755073
— In nickel-copper sulfide ore processing, serpentine is a common gangue mineral encountered in complex sulfide ores and can easily cause entrainment during flotation [].Large amounts of serpentine in the flotation concentrate reduces the effectiveness of smelting, often resulting in the imposition of smelter penalties on mineral …
WhatsApp: +86 18221755073
— Tel: +86-516-83995976; E-mail address: [email protected] Process mineralogy of copper-nickel sulphide flotation by a cyclonic-static micro-bubble flotation column CAO Yi-jun 1, GUI Xia-hui 1, MA Zi-long 1, YU Xiao-xia 2, CHEN Xiao-dong 2, ZHANG Xiu-pin 2 1 School of Chemical Engineering and Technology, China University …
WhatsApp: +86 18221755073
— The values for nickel, copper, and cobalt used in this study were 11.43, 5.85, and 67.58 USD/kg for each metal, respectively. This was based on January 2018 spot prices and a 15% discount factor to account for the intermediate nature of the product. ... Flotation Effects of copper sulphate, grinding (polish and finer grinding), pulp pH ...
WhatsApp: +86 18221755073
— It should be added that segregation of laterite ores prior the flotation process has shown some improvement in upgrading nickel. The segregation process relies on the addition of calcium chloride or sodium chloride and carbon allowing the formation of nickel and iron chlorides at temperatures between 900 and 1150 °C. Iwasaki et al., (1961) and …
WhatsApp: +86 18221755073
— The pH of recycled process water, copper flotation feed, and nickel flotation feed dropped by 0.7, 0.4, and 0.7 points, respectively, from May to July. The oxygen demand increased from recycled ...
WhatsApp: +86 18221755073
optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore. The parameters investigated include collector dosage, percentage solids, …
WhatsApp: +86 18221755073
— The flotation of copper, nickel iron and cobalt ions with PPKO into SDS has been investigated. Analytes extractions were shown to be achieved with PPKO due to the hydrophobic complex compound formation. The sensitivity, metrological characteristics, ecological safety, simplicity, and convenience of the suggested procedure are …
WhatsApp: +86 18221755073
— However, when the flotation results are considered, it is evident that xanthate adsorption alone does not explain the combined effect of the ions. For example, thiosulfate reduced the activating effect of calcium in nickel flotation but increased it in copper flotation, in region where galvanic interaction with mill iron was effective.
WhatsApp: +86 18221755073
— A high frother concentration produces an excessive amount of froth in the flotation cell. This increases the froth overflow and flotation rate, but, unfortunately it also decreases the concentrate grade. Collector concentration has a significant effect (either linear or non-linear) on all three quantitative response variables.
WhatsApp: +86 18221755073
In this study, the robust Taguchi experimental design method was used to determine the optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore. The parameters investigated include collector dosage, percentage solids, depressant dosage and pH. The effects of these parameters at three different levels ...
WhatsApp: +86 18221755073
— The Direct Leaching of Nickel Sulfide Flotation Concentrates – A Historic and State-of- the-Art Review Part I: Piloted Processes and Commercial Operations Nebeal ... of nickel-copper concentrates and concentrates high in PGMs, slow cooling of the converter matte is carried out to enable copper and nickel phase separation and the …
WhatsApp: +86 18221755073