Phoenix Tailings | arpa-e.energy.gov
Phoenix Tailings' CO2 GONE process uses and recycles CO2 to extract energy-relevant minerals, primarily nickel (Ni) and magnesium (Mg), from iron- and aluminum-rich ore …
Indonesia's nickel processing boom raises questions over tailings …
Indonesian nickel miners are turning to high-pressure acid leaching to recover nickel that goes into batteries, but experts warn that tailings disposal may prove difficult in the country's wet climate. ... Vale implemented dry stacking at its Vargem Grande iron ore complex in Brazil. ... Indonesia's climate to test tailings management.
Recovery of high-quality iron phosphate from acid-leaching tailings …
Extracting 1 ton of nickel from laterite nickel ore results in approximately 160 tons of acid-leaching tailings, known as laterite nickel ore (LTLNO), leading to pressing issue of resource waste and environmental pollution [9], [10]. Currently, most of the LTLNO is disposed of in landfills, at sea, or buried underground, which incurrs high ...
Operations and Facilities
As indicated by its name, the hydrometallurgical process makes use of water – and other chemical compounds – to progressively separate nickel and cobalt from the other materials present in the ore. The tailings – residue with no commercial value left over after mining, processing, and refining – are neutralized and pumped from the Plant ...
A review on complex utilization of mine tailings: Recovery of …
Nickel extraction by bioleaching from laterite ores and MTs has reached 8–26%, with aerobic conditions and microwave pretreatment enhancing nickel yields. …
Impacts of Nickel Mine Tailings Storage Facility on Surface …
Nickel ore is categorised as a sulphide ore body, which is synonymous to acid mine drainage (AMD) generated through sulphide oxidation (Karlsson et al., 2021; Mudd, 2009).The major environmental problems associated with sulphide mining are related to sulphide mineral oxidation in the tailings and waste rock dumps with the subsequent …
Sulfuric Acid Granulation of Copper—Nickel Ore Tailings: …
A laboratory scale study was conducted, aimed at finding an effective method for processing fine concentration tailings of copper-nickel ores. A sulfuric acid tailing granulation process followed by subsequent heap leaching of granules is proposed. Various methods of preparation and storage of the granular material are discussed. A …
Take two: why mine tailings are worth another look
In November 2023, cleantech company, EnviroGold Global, completed initial test work for a nickel tailings project with a 'major global mining company'. This focused on optimising nickel, copper, cobalt, and platinum group metals (PGM) recovery processes …
Waste to treasure: A sustainable technic to prepare high …
Laterite nickel tailings differ from other traditional ore resources, containing heavy metals and chemical reagents remaining from the hydrometallurgy extraction of nickel. Moreover, due to the fine particles and challenges in transportation and pre-treatment, smelting is not a wise choice [10] .
Comprehensive Review on Metallurgical Upgradation Processes of Nickel
The current research results show that low-grade nickel ore resources (lean ore and tailings) had good bioleachability, and tailings were easier to leach than lean ore. But currently, the mechanism of the bioleaching process is undefined in addition to the slow bioleaching kinetics. Furthermore, the bio-oxidation process is an exothermic ...
Tailings.info What Are Tailings?
Tailings consist of ground rock and process effluents that are generated in a mine processing plant. Mechanical and chemical processes are used to extract the desired product from the run of the mine ore and produce a waste stream known as tailings. This process of product extraction is never efficient, nor is it possible to reclaim all ...
MANAGEMENT OF TAILINGS: PAST, PRESENT AND …
Most tailings can be thickened mechanically, some to a paste or filter cake consistency. However, clay mineral-rich tailings, such as coal tailings, mineral sands tailings, tailings from some oxide ores, and residue from the processing of bauxite, nickel laterite and oil sands, are difficult to dewater mechanically,
Geotechnical Properties of Mine Tailings and …
densities were measured in iron ore tailings, lower in gold tailings, and lower still in nickel tailings. In these tests, beakers of tailings are dried at temperatures in the range of 40 to 50 degrees Celsius for approximately four to seven days until the density change is insignificant. Figure 3. Tailings dry density by commodity.
Nickel recovery and stabilization of nickel waste tailings
Nickel waste tailings are produced during the hydrometallurgical leaching of nickel – cobalt ore slurry with concentrated sulphuric acid. They are classified by the …
Magnetic separation for recovering iron resources from
Download Citation | On Feb 1, 2024, Zhe Bai and others published Magnetic separation for recovering iron resources from acid-leaching tailings of laterite nickel ore through mineral phase ...
Waste to treasure: A sustainable technic to prepare high …
Laterite nickel tailings differ from other traditional ore resources, containing heavy metals and chemical reagents remaining from the hydrometallurgy extraction of nickel. Moreover, due to the fine particles and challenges in transportation and pre-treatment, smelting is not a wise choice [10].
Take two: why mine tailings are worth another look
Based in the state of Minas Gerais, Brazil, Agera receives the sand produced from the treatment of tailings at Vale's iron-ore operations in the state and promotes its commercialisation and distribution. ... This focused on optimising nickel, copper, cobalt, and platinum group metals (PGM) recovery processes from nickel mine tailings.
NICKEL AND COBALT ORES: FLOTATION
A typical example of a nickel sulRde plant operat-ing with highly Soatable talcose gangue is at Trojan mineinZimbabwe.TheZimbabweansulRdedeposits contain very low grades of nickel (0.6%) and copper (0.04}0.4%). The easily Soatable non-sulRde min-erals dilute the grade of the concentrate and also result in nickel losses into the tailings. This ...
Sulfuric Acid Granulation of Copper—Nickel Ore …
mature tailings of copper-nickel ore concentration circuits show that during the storage of. fine-grained waste, irreversible changes occur that are associated with oxidation and natural.
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 …
Iron Recovery from Residue of Lateritic Nickel Leaching …
The tailings produced by PT Halmahera Persada Legend, which produces dry tailings of 6.1 million tons and slurry with 51.9 million tons, will be pumped into the sea with the …
New global tailings standard guidelines aim for zero harm
The guidelines, organized around six topic areas, 15 principles and 77 auditable requirements, add new requirements for independent oversight of tailings facilities design and management.
2 Types of Nickel Ore: Processing Methods and Equipment
From the blog Nickel Metal in Battery: Why Is It Called the Devil's Metal, we learn that nickel sulfide ore and nickel oxide ore are important sources of nickel. The characteristics of these two types of nickel ore are quite different, so different nickel ore processing methods and equipment are rrequired. 1.
Draslovka's leaching technology to retreat gold and nickel tailings …
Previous metallurgical test work for the Windarra tailings project had shown potential improvement in recoveries and costs for the site's gold resources.
Recovery of high-quality iron phosphate from acid-leaching …
Laterite nickel ore is rich in nickel and iron resources, and the nickel element is extracted in the form of nickel salt. However, the acid-leaching tailings of laterite nickel ore …
Technospheric mining of scandium from hydrometallurgical tailings …
In this study, the potential of tailings generated from hydrometallurgical processing of nickel laterite ores as a source of scandium was investigated. The use of an atmospheric leaching process was proposed and five different lixiviants, namely sulphuric, phosphoric, oxalic, citric and ascorbic acids, were examined systematically to extract ...
A review of circular economy strategies for mine tailings
There are examples of 20–30% removal of the ore calculated as final tailings with subsequent production of 70–80% ore mass in flotation due to the successful sorting (Grotowski and Witecki, 2017). ... The tailings contain for example nickel, cobalt and zinc. The value of the metals in one single tailings waste pile reaches hundreds of ...
A review on complex utilization of mine tailings: Recovery of …
Nickel extraction by bioleaching from laterite ores and MTs has reached 8–26%, with aerobic conditions and microwave pretreatment enhancing nickel yields. Up to 91.5% nickel recovery from low-grade sulfide tailings and 53–57% extraction in just 7 days have been attained via novel bioleaching techniques [129]. Similarly, the fungus ...
Sulfuric Acid Granulation of Copper Nickel Ore Tailings: …
mature tailings of copper-nickel ore concentration circuits show that during the storage of fine-grained waste, irreversible changes occur that are associated with oxidation and natural
A critical review on metallurgical recovery of iron from iron ore tailings
Fig. 2 illustrates the iron ore beneficiation process, particularly magnetic separation, resulting in the generation of inevitable tailings. Due to the characteristics of iron ores and the conditions during beneficiation, it is inevitable that approximately 2.5–3 tons of IOTs are generated for every 1 ton of iron ore concentrate produced [7].In 2019, …