More than a dozen dead in Indonesia after blast at China-funded nickel
At least 13 people were killed and 38 injured in eastern Indonesia on Sunday in an explosion at a Chinese-funded nickel-processing plant, the owner of the industrial park that hosts the facility said.
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Need Nickel? How Electrifying Transport and Chinese Investment …
The authors examine tensions in nickel supply and value chains within the context of broad aspirations to electrify transport. Through their case study, which focuses on China's growing presence in Indonesian nickel extraction and processing, they contend that China is positioning itself as a gatekeeper to the energy transition — with vast …
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Basic Raw Materials for Non-ferrous Metals Metallurgy
Cassiterite, the most important tin mineral, and stannite, the second most important one, also need to experience mineral processing before smelting. There are over 50 nickel-bearing minerals, which can be classified into vulcanized nickel minerals and oxidized nickel minerals (laterite nickel ore), including pentlandite, garnierite, millerite ...
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Process effluents and mine tailings: sources, effects and
Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents …
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Hydrometallurgy | SpringerLink
Hydrometallurgy refers to the extraction of metals and production of inorganic substances from minerals through aqueous solutions. Although the entire amount of iron, lead, tin, and antimony and major production of copper and nickel come from the pyrometallurgical route, hydrometallurgy plays an important role in the extraction of …
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EXTRACTING METALS FROM SULFIDE ORES
Many important metals are present in nature combined with sulfur as metal sulfides; these include cadmium, cobalt, copper, lead, molybdenum, nickel, silver, and zinc. In addition, gold and platinum group metals are associated with sulfidic base metal ores. The extraction of metals from their ores has been an essential factor in the creation and ...
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Minerals | Free Full-Text | High Temperature Pressure Oxidation of a
The hydrometallurgical processing of nickel sulfide concentrates per se is not commonly practiced commercially though several processes for these feeds have been developed and tested at pilot scale [1,2]. ... The controlled oxidation of feed sulfide minerals using low oxygen partial pressure, ~100 kPa, demonstrated that the hydrothermal ...
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Research on Separation and Extraction of Valuable Metals
While the process of HPOL is performed for disposing the low-grade sulfide ore, sulfuric acid is usually adopted as the leaching agent for extracting copper and zinc, and alkaline leaching agent is usually selected for nickel sulfide ore. During the oxygen pressure acid leaching of sulfide ore for copper and zinc, most of the sulfur combined in ...
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Progress in bioleaching: part B, applications of microbial
Abstract This review provides an update to the last mini-review with the same title pertaining to recent developments in bioleaching and biooxidation published in 2013 (Brierley and Brierley). In the intervening almost 10 years, microbial processes for sulfide minerals have seen increased acceptance and ongoing but also declining …
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The High Temperature Co-Processing of Nickel Sulfide and Nickel …
The processing of nickel laterites by high pressure acid leaching (HPAL) typically uses feeds with an average nickel content not less than 1.1%–1.2% (cut-off grade 1.0%) [] though recently several nickel laterite projects have been revalued with lower nickel cut-off grades based upon the cobalt content of the ore.It may also be possible to …
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Wastewater Treatment in Mineral Processing of Non-Ferrous …
Wastewater produced during non-ferrous metal mineral processing contains a complex mixture of pollutants at high concentrations, making comprehensive treatment difficult. ... The chemical oxygen demand (COD), which is the oxygen equivalent that can be used by ... D. Differential precipitation of copper and nickel from acidic …
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Minerals | Free Full-Text | Oxidative Dissolution of Low-Grade Ni …
This paper investigated the effect of mineral surface oxidation on the floatability of Kevitsa low-grade Ni-Cu ore. Physicochemical measurements, ethylene diamine tetra acetic acid (EDTA) extraction, and oxygen uptake experiments were carried out with slurry and recycled process water samples obtained from the Kevitsa Cu-Ni …
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Advanced Review on Extraction of Nickel from Primary and …
Nickel extraction from primary resources such as ores/minerals (sulfides, arsenides, silicates, and oxides) including the unconventional one viz., the polymetallic …
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Production of Nickel by Cold Hydrogen Plasma
In the current investigation, nickel has been produced from nickel oxide (NiO) pellets of ~ 2.5 gm to ~ 7.5 gm. The hydrogen flow rate ranges from 70 ml/s to 150 …
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High-Grade Ferronickel Concentrates Prepared from Laterite Nickel …
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 …
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Nickel processing | Extraction & Refining Techniques | Britannica
nickel processing, preparation of the metal for use in various products.. Although it is best known for its use in coinage, nickel (Ni) has become much more important for its many industrial applications, which owe their importance to a unique combination of properties. Nickel has a relatively high melting point of 1,453 °C (2,647 °F) and a face-centred cubic …
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Analysis of Oxidation of Sulfide Minerals in Copper–Nickel …
Existing studies describe the methods of processing copper-nickel ores, their chemical composition, conditions for the proceeding of chemical reactions; however, these works do not disclose the problems of oxidation effect on compositional variation of the mine atmosphere and the amount of oxygen absorbed by sulfide minerals and …
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Hydrometallurgical nickel and cobalt plants and processes
Pyrometallurgically produced nickel matte is leached in atmospheric and pressure Outotec OKTOP reactors with the help of oxygen and sulfuric acid. The leaching circuit …
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The pros and cons of oxygen mediating the …
More information: Luis Sandoval-Diaz et al, Metastable nickel–oxygen species modulate rate oscillations during dry reforming of methane, Nature Catalysis (2024). DOI: 10.1038/s41929-023-01090-4 ...
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Autoclave Leaching of Copper Nickel Matte
To aid in the separation of nickel and copper, the leaching step is usually conducted in several stages. Presently, considerable attention has been given to a two-stage leaching process that has been …
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Selective leaching of valuable metals from laterite nickel ore with
This study proposes a novel process for simultaneous extraction of valuable metals by oxidative leaching of low grade nickel matte in a mixed solution of (NH 4) 2 S 2 O 8 and H 2 SO 4.The effects of some factors, such as particle size of matte, stirring speed, leaching time, leaching temperature, mass ratio of ammonium persulfate to matte (A/M) …
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Metallurgy | The Canadian Encyclopedia
The slag contains substantial amounts of copper and is treated by a mineral-processing operation in which it is crushed as it cools slowly. The copper-containing components are floated to produce a 40 per cent copper slag concentrate for recycling to the reactor. This process has been in operation at Noranda, Québec, since 1973. Nickel
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Improving the rotary kiln-electric furnace process for ferronickel
The primary pyrometallurgical route to produce ferronickel from laterite nickel ores is the Rotary Kiln-Electric Furnace (RKEF) process. In the RKEF process, minerals undergo calcination and partial reduction in a rotary kiln. Large amounts of mineral dust leave the kiln entrained in flue gases.
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Efficient Synchronous Extraction of Nickel, Copper, and Cobalt
Considering that the low recovery efficiency and the massive loss of valuable metals by the traditional pyrometallurgical process smelting low‒nickel matte. Therefore, this paper focuses on ...
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Comprehensive Review on Metallurgical Upgradation Processes …
In consideration of the special mineralogical characteristics of nickel sulfide ore, oxygen is regarded as a common oxidant in nickel extraction from nickel sulfide …
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Minerals | Free Full-Text | The Prospect of Recovering Vanadium, Nickel
Vanadium (V), nickel (Ni), and molybdenum (Mo) are all important strategic metal resources and are widely used in steel, electronics, aerospace, the military, industry, and so on [1,2,3].Key metals in black shale have received growing attention as global ore grades have continued to decline [4,5].Stone coal is a vanadium-bearing shale (total …
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Full article: The Direct Leaching of Nickel Sulfide Flotation
The co-processing of nickel laterite and nickel sulfide resources represents yet another potential opportunity in Western Australia given the proximity of nickel laterite and sulfide resources to each other and research into the effects of laterite mineralogy (limonitic vs clay silicate) and sulfide source (concentrate, whole ore, and high MgO ...
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An integrated process of CO2 mineralization and selective nickel …
Similarly, the bedrock of laterites may also be suitable in the future for the mineral carbonation and nickel extraction due to the high content of olivine and the ∼ 0.3 % nickel content. A novel process has been developed with concerted mineral carbonation and selective leaching of laterites (cMCSL) [30], as shown in Fig. 1. This process can ...
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Multiphase equilibrium modeling of oxygen bottom-blown
A computational thermodynamics model for the oxygen bottom-blown copper smelting process (Shuikoushan, SKS process) was established, based on the SKS smelting characteristics and theory of Gibbs free energy minimization. The calculated results of the model show that, under the given stable production condition, the contents …
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Minerals | Free Full-Text | Improving Nickel Recovery in Froth
The pressure for saving water by closing the water loops in mineral processing is increasing continuously. The drivers for higher recirculating rates include water scarcity in dry areas, environmental legislation that is becoming stricter in most countries, limitations set for wet tailings management and the increased demands for …
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