Effect of Arsenic, Antimony, and Bismuth in Co-processing …
1.3 Co-processing of Sulphide Concentrates and Laterite Ores. Past studies [1,2,3,4,5,6] have identified potential synergies between the requirements for acid and heat for leaching of laterite ores and high-temperature oxidation of sulphides, including pyrite, pyrrhotite, low-grade nickel or bulk sulphide concentrates. However, despite this ...
Cobalt processing | Uses, Supply, & Facts | Britannica
cobalt processing, preparation of the metal for use in various products. Below 417 °C (783 °F), cobalt (Co) has a stable hexagonal close-packed crystal structure. At higher temperatures up to the melting point of 1,495 °C (2,723 °F), the stable form is face-centred cubic. The metal has 12 radioactive isotopes, none of which occurs naturally.
One-Step Extraction of Nickel from Nickel Sulfide …
The authors have proposed a virtually SO 2 -free and one-step nickel extraction method, by which Ni values in the sulfide concentrate can be extracted into a …
The High Temperature Co-Processing of Nickel Sulfide and Nickel …
The co-processing of a low-grade nickel concentrate with blended Bulong nickel laterite ore was demonstrated to be effective for the extraction of nickel and cobalt at 250 °C using total pulp densities of 30% w/w and 40% w/w over a range of nickel concentrate to nickel laterite mass ratios between 0.30 and 0.53.
Sulfide and Nickel Laterite Sources
co‐processing of 40% w/w total, 12.0% nickel concentrate with 28.0% nickel laterite ore, in site water. 250 C with ~250 kPa overpressure. at 250 °C with ~250 kPa O2 O2 overpressure. For all co-processing tests, base metal extractions of 95% or greater were obtained, indicating that.
Enhanced methods for nickel recovery from low …
All nickel ores have relatively low nickel content, the classification is as follows: high-grade nickel ore has Ni content greater than 1.8%, middle-grade nickel ore has Ni content between 1.3-1.7%, …
Processing of Nickel Ores and Concentrates (Nickel Processing '10)
The aim of this conference is to bring together researchers and plant operators, to discuss all aspects of the physical and chemical processing of nickel ores, copper-nickel ores and laterites, and nickel concentrates. Organized by: MEI Check the event website for more details. View all events from this organizer.
High-Grade Ferronickel Concentrates Prepared from …
Considering on the low grade of nickel and iron in laterite nickel ore, solid-state reduction roasting combined with magnetic separation to remove the …
THE EFFECT OF ADDITIVES AND REDUCTORS IN …
sulfate additives by weight in the reduction process of laterite nickel ore produced higher concentrations of nickel as 6.09%, compared to no additives, i.e. 2.45%. The addition of reductors in the selective reduction process of laterite nickel ore shows that the higher the amount of reductors causes a decrease in the concentrate level of nickel.
Direct leach approaches to Platinum Group Metal (PGM) ores …
Mintek (Jones, 2002) has developed and piloted a patented process for the treatment of nickel–copper–PGM sulfide concentrates with high chromite and low sulfur content. The ConRoast process is based on sulfur removal by fluidized-bed roasting, followed by a reductive smelting of the dead-roasted (with low sulfur content) …
Solid State Extraction of Nickel from Nickel Sulfide Concentrates
The conventional smelting and refining of Ni sulfide concentrates is an effective strategy for extracting Ni from sulfide ores. However, during the smelting process, sulfur is oxidized to sulfur dioxide (SO 2), which poses a significant environmental hazard.The present work investigates the feasibility of an alternative process to recover …
Processing routes for copper and nickel ores.
The former involves smelting of the ore or concentrate at high temperatures, while the latter involves leaching the ore or concentrate at relatively low temperatures, including ambient. These two ...
Comprehensive Review on Metallurgical …
In this solid-state nickel extraction process, it can be achieved that recovered nickel values into alloy and simultaneously retained the bulk of sulfur of the nickel sulfide concentrate …
Nickel processing
The extraction of nickel from ore follows much the same route as copper, and indeed, in a number of cases, similar processes and equipment are used. The major … See more
The Direct Nickel Process :: Total Materia Article
The Direct Nickel Process DNi is an atmospheric hydrometallurgical processing route designed to treat all types of nickel laterite ores, in a single flow sheet to produce a number of final saleable products. The key to the Process is the use of nitric acid as the leaching agent and the subsequent use of a patented recovery and recycling process ...
Sulfation Roasting of Nickel Oxide–Sulfide Mixed …
Sulfation roasting, a common activation technique, is a potential method for cleaner production of nickel from complex low-grade ores. In this study, nickel oxide–sulfide mixed ore concentrate was roasted with the …
Nickel processing | Extraction & Refining Techniques
Ores Sulfides. Canadian ores are sulfides containing nickel, copper, and iron. The most important nickel mineral is pentlandite, (Ni, Fe) 9 S 8, followed by pyrrhotite, usually ranging from FeS to Fe 7 S 8, in which some of the iron may be replaced by nickel. Chalcopyrite, CuFeS 2, is the dominant copper mineral in these ores, with small …
Processes for the recovery of bismuth from ores and concentrates
One such method is the flow sheet for processing a. copper–bismuth ore (Cu, 2.35%; Bi, 0.26%) and. incorporates the production of a collective copper–. bismuth concentrate containing 10.59% of ...
Roasting and Leaching Behavior of Nickel Laterite Ore
Abstract Nickel is mostly extracted from sulfide ores, however, laterite ores account for over 60 pct of all nickel resources in the world, and despite its predominance, there is no well-established process to extract nickel from such ores. Nickel in laterites is hosted in many different compounds such as oxides, hydroxides, and silicates minerals. …
High-Grade Ferronickel Concentrates Prepared from Laterite Nickel Ore …
Nickel is widely used in industrial processes and plays a crucial role in many applications. However, most of the nickel resource mainly exists as nickel oxide in laterite nickel ore with complex composition, resulting in difficulty in upgrading the nickel content using physical separation methods. In this study, high-grade ferronickel concentrates …
Extraction of Nickel and Cobalt from Sulfide Ores
The primary advantages of pyrometallurgical processing of nickel sulfide flotation concentrates are that iron and sulfur are removed from the concentrate during smelting and converting with a ...
One-Step Extraction of Nickel from Nickel Sulfide Concentrates …
The conventional nickel smelting and refining is the dominant strategy for nickel production from the sulfide nickel ores. The main disadvantages are the significant amount of SO 2 emissions during smelting and complex refining processes. In this paper, the authors investigated a solid-state nickel extraction method that recovered nickel …
Processing of Nickel Ores & Concentrates
Processing of Nickel Ores & Concentrates. Volume 88, Pages 1-66 (15 March 2016) Download full issue. Previous vol/issue. Next vol/issue. Actions for selected articles. Select all / Deselect all. Download PDFs Export citations. Show all article previews Show all …
Ferronickel Generation from Nickel Sulfide Concentrates by …
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 …
Autoclave processing of low grade copper-nickel concentrates
low total yield of copper, preleaching had a greater effect on copper extraction than on. nickel extraction. Autoclave leaching of the richer Pechenga concentrates ( 1.6-2.44% Ni) gave positive ...
The Direct Leaching of Nickel Sulfide Flotation …
Difficulty processing nickel concentrates high in arsenic (As) and magnesia (MgO), which can render many concentrates, particularly those produced from …
Mineral Commodity Summaries 2024
Nickel ores and concentrates, nickel content 2604.00.0040 Free. Ferronickel 7202.60.0000 Free. Unwrought nickel, not alloyed 7502.10.0000 Free. Nickel waste and scrap 7503.00.0000 Free. Depletion Allowance: 22% (domestic), 14% (foreign). Government Stockpile:6 The U.S. Department of Energy is holding approximately 9,700 …
Special Issue : Processing of Nickel Ores & Concentrates
Special Issue : Processing of Nickel Ores & Concentrates. Volume 24, Issue 7, Pages 593-708 (June 2011) Download full issue. Previous vol/issue. Next vol/issue. ... Reductive dissolution of ferric iron minerals: A new approach for bio-processing nickel laterites. Kevin B. Hallberg, Barry M. Grail, Chris A. du Plessis, D. Barrie Johnson.
The journey of nickel
Afterwards, the crushed ore undergoes a flotation process, a method used to separate and concentrate ores based on whether their surfaces are repelled by, or attracted to, water. It is one of the most widely used processes for extracting minerals like nickel from their ore – the natural rock or sediment that contains them.
Production of Nickel Concentrate from Ground Sulfide Ore
Abstract. This chapter explains the process of nickel concentration from ground sulfide ore, the starting material. This is necessary because mined nickel sulfide ores contain between 1% and 3% Ni ...