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recovery of metalic slag from hotslag
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Oxidative Acidic Leaching of Ferronickel Slag for Sustainable Metals …
Pyrometallurgical processing of lateritic ore produces huge amounts of ferronickel slags, which may contain valuable metals. This paper describes a novel hydrometallurgical route to recover metals from ferronickel slag samples and reduce liability matters using oxidative acidic leaching. Hydrochloric acid and hydrogen peroxide …
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Recovery of Valuable Metals from Nickel Smelting Slag …
Nickel smelting slag contains valuable metals including nickel and copper. Failure to recycle these metals wastes resources, and disposal of nickel slag in stockpiles results in environmental pollution. Nickel slag recycling is important, and metals can be recovered from slag by flotation. However, considering the complex forms in which …
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Selective recovery of valuable metals from nickel converter slag …
High pressure oxidative acid leaching (HPOXAL) was employed to extract valuable metals from nickel converter slag. Parameters such as sulfuric acid concentration, temperature, liquid/solid (L/S) ratio, leaching time, oxygen partial pressure and particle size were investigated to optimize the solubility of metal values and improve the solid–liquid …
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Hot Slag Handling
Handling 700 degrees Hot Slag? has a solution: Slag represents undesired impurities in the metals being smelted which float to the top during the smelting process, metals start to ...
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Economic potential and environmental impact of metal recovery …
The second factor is that metal recovery from slag must be low cost (Wu et al., 2010). Since these criteria generally cannot be met, a large amount of the slag produced as a by-product is stored as waste in the plants (Zheng and Kozinski, 1996). The slag is rather than simply "waste". It is another complex resource for metals.
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Innovative strategy for comprehensive utilization of vanadium slag …
Innovative strategy for comprehensive utilization of vanadium slag: maximizing valuable metals recovery and minimizing hazardous waste generation Introduction Vanadium, a significant strategic metal widely used in chemical industry, steelmaking, and energy applications (Tan et al., 2023, Wang et al., 2023b), is primarily …
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Process Concept for the Dry Recovery of Thermal Energy of …
The liquid slag is poured into the slag tundish which homogenizes the slag and guarantees a constant mass flow. The heat exchangers extract thermal energy from …
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Metals | Free Full-Text | Recovery of Copper and Magnetite …
On the one hand, copper slag is nowadays a waste in copper pyrometallurgy despite the significant quantities of iron (>40 wt. %) and copper (1 to 2 wt. %). On the other hand, solar energy, when properly concentrated, offers great potential in high-temperature processes. Therefore, concentrated solar power (CSP) could be used in the treatment of …
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Multitudinous components recovery, heavy metals …
The recovery of carbon sources from CGFS for application in electromagnetic wave-absorbing materials has attracted much attention. ... which released metals from the slag. Besides, the risk of Ni, Cd, and As in acidified slag samples was larger at higher acid concentration treatments, so the acid concentration used should be controlled to avoid ...
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Simulation of precious metals recovery from nickel smelter slag …
The nickel smelter slag as a solid waste of pyrometallurgical operations can be harmful to the environment especially against the ground that will be contaminated by hazardous components contained the smelter slag. Nickel smelter slag has the content of valuable metals as the following: Nickel (Ni), Cobalt (Co), Copper (Cu), Iron (Fe) and …
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Base metals recovery from copper smelter slag by oxidising …
Metal recovery as a function of potential Eh by oxidising leaching with H 2 SO 4 of copper slag (10% solid, particle size: <100 μm, pH 2.5, temperature: 70 °C, leaching time: 180 min). Fig. 8 also indicates that leaching at high potentials can reduce the leaching time: 65% copper was extracted after 180 min at 450 mV and only 60 min at ...
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Two-stage method recovery of metals from copper slag: …
The recovery of metal from copper slag is of great significance to the resource utilization of copper slag and the sustainable development of copper smelting industry. Currently, hydrometallurgy is the traditional method used to recover mineral metals. However, as copper slag is a silicate mineral, the traditional acid-leaching …
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Basic Oxygen Steelmaking Slag: Formation, …
This includes four important topics: 1) slag formation, i.e., dissolution of lime in the BOS slag; 2) in situ observation of high-temperature behavior of BOS slags; 3) transient phenomena in BOS slags due to metal …
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Characterization, Concentration, and Speciation of Metal …
The treatment of large amounts of copper slag is an unavoidable issue resulting from the high demand for copper during the global transition to a sustainable development path. Metal-rich copper slag might serve as a potential source of metals through secondary recovery. In this study, two copper slags (CS1 and CS2) with …
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Co-modification of BOF Slag and Copper Slag to Recover Valuable Metals
A novel co-modification method between BOF slag and copper slag is proposed for the effective recovery of valuable metals in the metallurgical slags. The co-modification reactions between the Ca-containing phases in BOF slag and fayalite in copper slag are discussed on the basis of thermodynamic analysis, and the co …
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Recovery and purification of metallic silicon from waste silicon slag …
A new technology of Si recovery from waste silicon slag by electromagnetic separation. • Separation and purification theory of silicon from silicon slag is elaborated. • Recovery rate of Si by electromagnetic separation technology reaches 96%. • It was successfully used to industrial tests with an output rate of 81%.
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Recovery of value metals from copper smelter slag by …
The total recovery of metals from the slag into a solution is, %: zinc—91.5; copper—89.7; iron—88.3. 3.4. Reagents recovery. After metal hydroxides precipitation the solution was evaporated to obtain of ammonium chloride. Ammonium chloride was dried to constant weight and was reused. Ammonia solution, obtained by absorption of gas, used ...
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An overview of recovery of metals from slags
On this basis, a review of a number of methods for recovery of metals from the slags was made. It can be seen that a large amount of slags is produced each year. They usually contain a quantity of valuable metals except for blast furnace slag and they are actually a secondary resource of metals.
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Exploiting the Molten Slag to Decarbonize Iron …
To address this issue, centrifugal granulation-assisted thermal energy recovery (CGATER) is proposed and is regarded as the leading slag treatment technology. The CGATER provides a viable …
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Granulation and Heat Recovery from Metallurgical Slags
Traditionally, metallurgical slags have been air cooled in slag pots or large yards. Slag pot cooling is a slow process thus allowing crystallisation of various mineral phases as well as separation of metallic and matte phases into droplets. The slag that is poured into pits is cooled by air …
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Recovery of Metals from Copper Smelting Slag Using Coke …
With the purpose of recovering the metal values, in this study the copper slag was reduced by coke and biochar at 1250 °C in an argon gas atmosphere using the isothermal reduction/drop quenching technique. The phase compositions of metal, matte, and slag were determined using electron probe microanalysis (EPMA). The effects of …
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Magnesium recovery from ferrochrome slag: kinetics and …
Recovery of metals such as Mg from FCS allows producers to enter the lucrative metal markets and improve the bottom line for mining companies. The extraction methods used in recovering metals such as Mg from slag materials are cheap compared to technologies adopted to recover Mg from primary sources which include the Pidgeon …
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Metal recovery from copper converter slag by roasting …
Roasting of converter slag with ferric sulphate, followed by leaching with water, was carried out in order to bring the metal values into solution. For 500°C roasting temperature, 120 min roasting time and Fe 2 (SO 4 ) 3 · xH 2 O/slag = 1 ratio, recoveries of copper, cobalt, nickel and zinc were about 93%; 38%; 13% and 59%, respectively.
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Recovery of Chromium from Ferronickel Slag via Alkaline …
The ferronickel slag was obtained from a ferronickel smelting plant in China. The main chemical composition of the slag is shown in Table 1. It was featured by high contents of silica and magnesia, with the Cr 2 O 3 content of 2.11 wt %. The main mineral phase of the slag was olivine (Mg 1.8 Fe 0.2 SiO 4), except for a small amount of glassy ...
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An Overview of Precious Metal Recovery from …
This review article evaluated and summarized various extraction methods including magnetic separation, roasting, pyrometallurgical method, hydrometallurgical and bio hydrometallurgical technique to recover …
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Metallurgical Processing Strategies for Metals Recovery from …
Slag produced as a byproduct in industrial processes, contains considerable metals contents, which need to be recovered to avoid environmental contamination. In present …
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Sustainable and Comprehensive Utilization of Copper Slag: A …
Metal Losses to the Slag in Smelting and Converting. 80% of the copper produced from ores worldwide originates from sulfide ores. The copper concentrate which results from flotation of the ore is typically smelted and converted to blister copper [].During smelting S and Fe are oxidized, where SiO 2 is added to form a liquid ferric or ferrous …
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Current technologies for recovery of metals from industrial …
Since decades ago, a number of new approaches to the metal extraction using combined hydro- and pyro-metallurgical processes have been introduced (Rao, 2006).Selective dissolution of desired metals is done using strong chemical reagents producing a high grade concentrate, which then roasted at low temperature (< 500 …
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Oxidative Acidic Leaching of Ferronickel Slag for …
In general, the recovery of metals such as copper, cobalt, nickel, and zinc in an oxidizing medium is enhanced. This route also improves the performance of the solid–liquid separation step, preventing the formation of silica gel deposits [27]. Apparently, an oxidative acid leaching of FeNi slags for metal recovery has not been described.
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Recovery of rare earth metals as critical raw materials from phosphorus
While selecting the phosphorous slag breaker it is necessary to keep in mind the possibility for a complex processing of phosphorous slag, along with recovery of rare earth metals and production of precipitated silicon dioxide. Meanwhile, the perspective for further processing of REMs-containing solutions is also of considerable interest.
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Mine Slag -Precious Metal Recovery
Refinery Slag Recovery Test Work Metal Recovery Overall Wt. Avg. Glass Metallic % Gold 43.79 78.98 8.68 % Silver 33.51 40.78 6.58 Refinery Slag Recovery Test Work Metal Contained % Wt. % Value Glass 99.26 0.54 Metallic 0.74 99.46 . 5 | P a g e Guidance Manual for the Control of Transboundary Movements of Recoverable Wastes ...
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Slag Recycling and Metal Recovery
Slag recovery: Turning a waste disposal problem into a business opportunity; • The slag-co product produced from the metallic recovery process fulfills important functions as construction materials for roads, ports, airports, and also as an environmental material for restoring or improving marine, soil, and other environments,
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Recovery of Valuable Metals from Nickel Slag: A Descriptive …
Nickel slag (NS), generated mainly during nickel (Ni) smelting, and classified as a potentially harmful solid waste, is an important secondary resource containing not only valuable metals, such as Ni, Cu, Fe, and Co, but also hazardous elements, such as As and Pb. Hence, in response to its potential economic performance …
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(PDF) Heat Recovery from High Temperature …
Waste heat recovery from high temperature slags represents the latest potential way to remarkably reduce the energy …
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Turning waste into wealth: Synergistic recovery of metal from copper slag
A study published in Transactions of Nonferrous Metals Society of China. detailing a novel method for the recovery of. copper, lead, and zinc from copper smelting slag using a sulfurization-reduction approach.This innovation represents a significant stride in metallurgical waste management, with potential impacts on both industry practices …
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Recovery of metal from slag/mixed metal generated in …
DOI: 10.1016/J.MINPRO.2004.08.013 Corpus ID: 96298746; Recovery of metal from slag/mixed metal generated in ferroalloy plants—a case study @article{Sripriya2005RecoveryOM, title={Recovery of metal from slag/mixed metal generated in ferroalloy plants—a case study}, author={R. Sripriya and C. V. Ramana …
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