I have tailings that came from a copper extraction process. It is in solid 2 or less in size. We are curious if there is a way to make pig iron with this? And a
These projections show that, under a business-as-usual situation in the mining sector, the global amounts of mining waste are likely to increase exponentially as the global energy transition progresses. Taking the rough estimate of 200 Gt of global historical tailings, copper alone would increase this amount by 150%.
An experimental comparison: Horizontal evaluation of valuable metal extraction and arsenic emission characteristics of tailings from different copper smelting slag recovery processes.
We focused on a narrative review to find the relevant literature, because it focuses on the topic in a broader way compared to a systematic review. Words such as circular economy in mining, mine tailings, utilization, metals recovery from tailings, tailings reprocessing, tailings hydrometallurgy and digitalisation were used in the search.
An experimental comparison: Horizontal evaluation of valuable metal extraction and arsenic emission characteristics of tailings from different copper smelting slag recovery processes
Copper Mining at Chuquicamata. The Chuquicamata mine in northern Chile's Atacama Desert is one of the deepest open-pit mines in the world, second only to Bingham Canyon in Utah. The extraction of huge stores of copper has hollowed out the landscape; the largest pit at the site reaches a depth of approximately 1,000 meters …
The composition varied highly due to the variation in source mineral, process of extraction, mineral extracted and quality of the ore [ 14 ]. Most of the mine tailings were predominantly silicates and the distribution of major chemical oxides of different mine tailings is given in Fig. 21.1.
What are Tailings? Tailings are a by-product of mining. After ore containing an economically-recoverable commodity is mined from the earth, that commodity is extracted in a processing plant or mill. After the commodity of value is extracted from the ore material, the resultant waste stream is termed "tailings".
A new Atlas of Australian Mine Waste aims to provide industry with opportunities to extract critical metals from previously mined rock.
Bioleaching involves the use of microorganisms to catalyze the oxidation of iron sulfides to create ferric sulfate and sulfuric acid. Ferric sulfate, which is a powerful oxidizing agent, then oxidizes the copper sulfide minerals and the copper contained is then leached by the sulfuric acid formed. In the case of uranium, the ferric sulfate ...
There were considerable quantities of copper and silver in the tested tailings that could form cyanide complexes during the cyanide leaching. The beneficiation plant at this particular mine in Mexico …
Currently, there are various ways to extract heavy metals from tailings, including physical, chemical, and biological methods ( Table S2 ). Bioleaching is considered as a reliable strategy with significant advantages over conventional hydrometallurgical techniques that use acids or bases to extract metals from tailings.
However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be considered secondary resources or future deposits of copper.
The results showed that the chelating agent application improved the physicochemical properties of copper tailings, increased the biomass of ryegrass and enriched more Cu and Cd in copper tailings. In the control group, the main existing forms of Cu and Cd were oxidizable state, followed by residual, weak acid soluble and …
Nickel processing - Extraction, Refining, Alloying: 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 differences in equipment are the use of higher-temperature refractories and the increased cooling required to accommodate the higher ...
The possibility of simultaneous liquid–liquid extraction of molybdenum and vanadium was examined. D2EHPA solutions was used as extractant, and recovery of individual elements compared for the representative samples of ore and copper flotation tailings. Radiometric methods were applied for process optimization.
Flotation wastes are becoming a valuable secondary raw material and source of many metals and semimetals worldwide with the possibilities of industrial recycling. The flotation tailings contain oxide and sulfide minerals that have not been sufficiently stabilized and form acidic mine waters, which in turn contaminate …
Semantic Scholar extracted view of "Additive-Free Aqueous Extraction of Copper and Zinc from Sulfidic Tailings Using Fast Microwave-Assisted Pre- and Post-Treatments" by Demian Kalebić et al.
Microorganisms play an important role especially in the gold recovery process from mining wastes and tailings. Some specialized bacteria, fungi, yeasts, algae or actinomycetes are increasingly being used to facilitate the extraction of gold from low-grade auriferous ore [ 44 ].
Li et al. [33] studied the leaching of gold without cyanide, using a system composed of glycine and ammonia in the presence of permanganate for a copper-gold tailings.
The mine tailings are mixture of fine-grained solid materials remained after extraction of recoverable metals and minerals, and water used in the process [18]. There are two main reasons for extracting critical minerals from mine tailings, particularly from old and abandoned tailings.
The same is done by heterotrophic microorganisms in non-sulfide ores. Additionally, for gold and copper extractions, bioleaching is used to extract cobalt, zinc, nickel, and uranium from low-grade ores and industrial effluents.
The MNTI and NDTIFe provide enhanced tailings composition information from the perspective of anion (carbanion and hydroxy) and cation (mainly ferric ion) contents, respectively. A tailing extraction model (TEM) is built using these three indexes to extract mine tailing information in Huangshi city.
27 to extract copper from tailings generated as waste materials in two mines currently operating
Drawing on recent experimental and commercial developments, this review reappraises potential substitute leach reagents for cyanide in the gold mining sector. In addition to extraction, the application of these reagents in the gold processing, pre-treatment and gold purification stages is explored. The main objective here is to discuss …
The 12-month ReTail project, in partnership with CPI, aims to establish the feasibility and environmental impact of processing tailings from Altilium's site in Europe to extract copper, aluminium and other battery materials for use in the UK EV battery supply chain (for example, to produce copper foils for use as current collectors).
The present study investigated the extraction of gold and copper from gold sulfide flotation tailings using a cyanide-free leaching method, i.e., glycine-ammonia solution in the presence of permanganate.
Beyond copper, Reuters said technology firms are looking to boost the use of leaching for other minerals, including rare earths. For example, Massachusetts-based startup Phoenix Tailings said it has developed technology to leach several types of rare earth metals, including neodymium, from waste rock without using harsh chemicals.
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 …
Germanium recovery from various resources such as zinc plant residues, coal and coal plant waste, spent optical fibers, and copper flue dust has been examined. Bioleaching was exploited by few researchers to extract germanium from zinc sulfides, sulfide tailings, jarosite, coal fly ash, and flue dust.
A sequential extraction procedure on the residues was performed to determine the forms of copper in the ore.
Toronto-based BacTech is using bacteria to extract an estimated $27 billion worth of metals from Sudbury mine waste. Aside from biotech solutions to extract metals from tailings ponds, companies ...
The new "mine-for-leach" process uses bacteria to extract copper from the ore and solvent extraction/electrowinning (SX/EW) to recover copper from the resulting leach liquor. Phelps Dodge has ceased all recovery of copper from sulfide mineral concentrates by means of conventional smelting operations at its Morenci, Arizona operations ...
At nearly every metal mine site, some form of mineral processing occurs, and tailings are being produced. In metal mining, the extracted oreore mineral ore –, minerals mineral –, ore...
Abstract This research aimed at recovering metals retained in the tailings from the flotation of copper (Cu) and cobalt (Co) ores conducted at the New Concentrator in Kipushi (NCK). Metals retention in the tailings (0.73% Cu and 0.37% Co) increased due to the removal of the gravity separation section from the processing circuit together with …
