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
Nickel ore refers to the naturally occurring rocks or minerals that contain significant amounts of nickel Nickel is a chemical element with the symbol Ni and atomic number 28 It is a silvery white metal with a relatively high melting point and excellent corrosion resistance Nickel is commonly found in the Earth s crust but it is typically extracted from its
A direct solvent extraction DSX process for purifying nickel and cobalt from the nitric acid leach solution of nickel laterite ores was conceived and experimentally probed The proposed process consists of two solvent extraction SX steps but with only one extractant bis 2 4 4 trimethylpentyl phosphinic acid Cyanex® 272 used in both steps
Nickel sulfide concentrates are critical materials for the production of metallic nickel The disadvantages associated with the conventional nickel extraction process are the considerable amounts of sulfur dioxide emissions in the smelting process and the complex Ni refining steps to produce a marketable product The authors proposed a novel thermal
Extraction values of nickel cobalt scandium and iron show similar dissolution characteristics as these are mainly entrapped in hematite and goethite minerals Higher extraction values of nickel cobalt and scandium were observed when sulfuric acid was used as compared with nitric acid
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
Both Cyanex 272 bis 2 4 4 trimethylpentyl phosphinic acid and Ionquest 801 2 ethylhexyl phosphonic acid mono 2 ethylhexyl ester are commonly used for metal extraction and separation particularly for zinc cobalt and nickel which are often found together in processing solutions Detailed metal extractions of zinc cobalt and nickel were studied in this
A direct solvent extraction DSX process for purifying nickel and cobalt from the nitric acid leach solution of nickel laterite ores was conceived and experimentally probed The proposed process consists of two solvent extraction SX steps but with only one extractant — bis 2 4 4 trimethylpentyl phosphinic acid Cyanex® 272 — used in both steps The first
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
Atmospheric acid leaching is widely used to extract nickel from secondary resources due to its mild effect but the extraction efficiency of nickel still remains limited In this work a sulfuric acid curing process was developed to improve the extraction of nickel by treating the leaching residues after acid leaching The factors influencing
The efficient recovery of nickel from chloride systems has long presented a challenge in the field While solvent extraction is a viable approach conventional extractants have been associated with drawbacks such as a high requirement for chloride ions and substantial consumption of acids and alkalis In response to these challenges this investigation developed
Selective extraction and separation of nickel from cobalt manganese and lithium in pre treated leach liquors of ternary cathode material of spent lithium ion batteries using synergism caused by Versatic 10 and LIX 84 I Hydrometall 2016 S Kursunoglu et al
With the decrease in nickel sulfide it is of great significance to extract nickel from laterite The limonitic laterite is a kind of rich nickel cobalt scandium resource At present there are few reviews on the extraction of limonitic laterite This study reviews the hydrometallurgical processes for limonitic laterite ores and the methods of
The sulfation roasting leaching process has been investigated as an alternative method for recovering nickel and cobalt from laterite ore This process involves converting the nickel and cobalt in the ore into sulfates which can then be dissolved through water leaching while the iron remains as an insoluble oxide However the presence of other components such
Extraction of Copper and Nickel from Low Grade Nickel Sulfide Ore by Low Temperature Roasting Selective Decomposition and Water Leaching Process [J] JOM 2019 71 12 4647 4658 6 Wenning Mu Fuhui Cui Zhipeng Huang Yuchun Zhai Qian Xu
Although nickel extraction was very low with 15% Cyanex 272 and 5% TBP system under the determined optimum conditions a substantial amount of manganese 98% calcium 21% and magnesium 30% were co extracted with cobalt Consequently scrubbing is required to ensure the high purity of the final cobalt product
Efficient Synchronous Extraction of Nickel Copper and Cobalt from Low Nickel Matte by Sulfation Roasting‒Water Leaching Process
Low temperature roasting selective decomposition and water leaching were used to extract nickel and copper from low grade nickel sulfide ore with highly alkaline gangue The effects of variable factors such as the dosage of roasting additives the ore particle size roasting time and roasting temperature selective decomposition temperature and leaching
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
A new process of direct solvent extraction of nickel from sulfuric acid leach solutions of low grade and complicated nickel resources using a novel extractant HBL110 was proposed The basic performance of new organic system was investigated and the continuous
For nickel extraction the network was run several times to evaluate best spread factor The network was implemented using the MATLAB neural network toolbox The size of the input vector was 5 × 46 and the size of the target pattern was 1 nickel extraction × 46 in this model The five inputs were Surfactant concentration Carrier
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