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·An extraction rate of % for nickel % for iron and % for chromium but low extraction rates of the refractory metals titanium Ti molybdenum Mo and niobium Nb were obtained under the optimal conditions of the heating temperature of 850 °C the heating time of 4 h and the zinc/superalloy mass ratio of 10 1
·The existence of substantial synergistic effect is demonstrated in Fig 1 which gives the pH dependence of the extraction of nickel and cobalt from sulfate media by individual D2EHPA and LIX 860 as well as their mixture in extent of synergistic effect is conveniently expressed by the difference between the pH 1/2 values defined as the pH at
·272 A small amount of nickel up to % was co extracted but was easily scrubbed out completely with dilute sulfuric acid at pH A flow diagram showing the input and output conditions and the metals separated under the deduced optimum conditions is presented Keywords solvent extraction; aluminum; cobalt; nickel; nickel laterite ores 1
·The extraction of nickel increases with increasing H 2 SO 4 concentration from M to M above which it hardly changes as the concentration further increases Therefore the optimum concentration of sulfuric acid was considered as M and further experiments were performed with this concentration
·Meanwhile an unknown product is found during the electrochemical reaction Upon analyzing this product we realize nickel ion can be extracted from the lattice of Ni FC suggesting that Ni FC is a nickel extraction material for nickel ion batteries Now multivalent metal ion batteries are enjoying interest for large scale energy storage [15
·1 Introduction Over the past 30 years laterite ores have become increasingly more important as a source of nickel metal Dalvi et al 2004 Several methods of nickel extraction from laterite ores have been piloted and some were put into full operation including acid leach with sulphuric nitric and hydrochloric acids ammonia leach and the
Nickel smelting; Extraction and purification; Nickel is recovered through extractive metallurgy it is extracted from its ores by conventional roasting and reduction processes that yield a metal of greater than 75% purity In many stainless steel applications 75% pure nickel can be used without further purification depending on the composition of the impurities
·The extraction of cobalt 30 58 wt% and the high extraction efficiency of lithium 41 92 wt% and nickel 37 52 wt% was obtained using Cyanex 272 in a mixture with diethyl phosphite Process factors such as solvent content extraction additivities stripping and precipitation methods temperature holding time pH and liquid/solid as
·In the present study for the first time the effect of sodium acetate sodium citrate and the addition of sodium oxalate was investigated in the D2EHPA system for the extraction of nickel and copper In this study the optimum condition including pH the concentrations of additives and time was found according to the separation factor and the
·The main methods have been extensively reviewed for nickel extraction from nickel sulfide ores which maybe are potentially applicable to provide new ideas for smelting technology innovation of nickel and even other similar metals The main metallurgical methods include pyrometallurgical and hydrometallurgy containing smelting leaching and
·First Commercial Solvent Extraction Separation of Nickel and Cobalt The first cobalt SX plant was commissioned in 1974 at then Matthey Rustenburg Refiners in South Africa now Rustenburg Base Metals Refiners and is still operating today using the original equipment and design parameters [] This unit operation is the final purification step in the production of
·Nickel is a strategic metal element with excellent physical and chemical properties that applies in aerospace military battery industrial catalysis petroleum industry medicine and other fields [[1] [2] [3] [4]] Nickel is mainly used in the production of stainless steel 69% and the manufacture of batteries 11% [5] The emerging electric vehicle and battery
·The nickel recovery performs back extraction of nickel which remains in the organic phase coming from the preceding exchange stage into the aqueous phase to prevent nickel from remaining in the succeeding Co recovery stage In the Ni recovery stage the pH value is controlled to less than 4 by adding sulfuric acid and the following reaction
·One Step Extraction of Nickel from Nickel Sulfide Concentrates by Iron Addition Fanmao Wang Sam Marcuson Leili Tafaghodi Khajavi and Mansoor Barati Abstract The conventional nickel smelting and refining is the dominant strategy for nickel production from the sulfide nickel ores The main disadvantages are the
·Table 1 shows the main effects as determined by ANOVA as a function of the amount of nickel extracted after 120 min According to F Ratio and probability level values Prob Level ANOVA shows that under the studied conditions particle size was the most important factor during the extraction of nickel while temperature and reaction time have a similar
·Nickel is an important strategic metal resource which plays an important role in national defense aerospace new energy and other fields In recent years low grade nickel sulfide ore LGNSO has become the main raw materials for nickel extraction due to the depletion of high grade nickel sulfide ore resources [1] However the effect of the traditional smelting
·Nickel dimethyl glyoxime Ni DMG complex is the common method for selective extraction of nickel from any multimetal solution But recovery of DMG from the complex is a challenging job Two processes are adopted in this study 1 Acid treatment and 2 Dissolution recrystallization In acid treatment the product recovery is more but the colour
·After the extraction of nickel from limonite type laterite nickel ore the nickel content in the leaching slag decreased from % to % the iron content decreased from % to % and the SiO 2 content increased from % to % resulting in a leaching rate of % The main components of the leaching slag were analyzed using
·The conventional process of nickel extraction from sulfide concentrates involves complex and costly steps while also generating a considerable amount of sulfur dioxide The solid state extraction of nickel from nickel sulfide concentrates by iron addition was proposed as an alternative approach where the nickel was recovered into a ferronickel alloy in a simple
·5 OF NICKEL • The extraction of nickel and ferronickel from laterite and sulfide ores • Laterite ores occur as saprolite smectite and limonite layers because of their different compositions and mineralogy they require different methods of extraction Cu₈Ni₁₆Fe₁₀ • Saprolite which has a relatively low iron content is smelted
·The example chosen for this paper is the synergistic solvent extraction of nickel and cobalt from a typical laterite leach liquor In synergistic solvent extraction SSX the organic phase contains two reagents one termed the extractant and the other the synergist SSX can use combinations of acidic and neutral
·The extraction of Ni from sulfide ores is much simpler relative to laterites and is dominated by pyrometallurgical processing This typically involves comminution and flotation to produce a nickel
