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The recovery of copper from secondary waste resources (e.g. electronic wastes, slag, fly-ash, sludge and spent catalysts) via oxidative and reductive bioleaching becomes a running trend and a potential alternative to limited metal supply. The motive of this review is to ponder over recycling of secondary waste towards the circular economy …
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Research highlights Bioleaching and recovery of metals from final smelter slag was studied. Metal yields after 29 days of leaching were 41% Fe, 62% Cu, 35% Zn and 44% Ni. Metals were subsequently precipitated using biogenic sulfide. Over 98% of Cu precipitated at pH ⩾ 2.8 and over 99% of Zn precipitated at pH ⩾ 3.9. The precipitation of …
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slag before their processing for metal recovery.The froth flotation pro- cess is an established physical separation technique for the recovery of copper and metal values from copper slag (Roy et ...
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Abstract Copper anode slimes, the by-product of the copper electrorefining process, have been the subject of extensive investigation for recovering precious metals viz., Au, Ag, Pt and Pd, in addition to being the main source of rare/energy-critical elements such as Se and Te. There have been various approaches aiming at the development of …
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India exports its slag to countries like China, Philippines and Bhutan. India also imports the slag from Germany, Sri Lanka and Lithuania . On an average, US and developed countries use 70–80% of the steel slag, Australia utilizes 60–70%, whereas India utilizes less than 20% of its slag generated .
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DOI: 10.1021/acs.iecr.3c00604 Corpus ID: 258810699; An Overview of Precious Metal Recovery from Steel Industry Slag: Recovery Strategy and Utilization @article{ShekharSamanta2023AnOO, title={An Overview of Precious Metal Recovery from Steel Industry Slag: Recovery Strategy and Utilization}, author={Niladri Shekhar …
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Steel industry slag consists of metals like Cr, Ni, V, Zn, and many more ... 5.1.1 Recovery of Metals From Slag. ... Recently, Tata Steel, India has launched a product called "Tata Agreto," a BOF slag-based material to replace aggregates for road making. It is believed to conserve about 16,500 tonnes of natural aggregates for every ...
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A slag sample was produced during laboratory reduction tests of a steel slag for metal recovery. The reduction of the metal oxides changed slag basicity (CaO/SiO 2) to about 1.6 and led to the ...
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Of the approximately 5.6 Mta of steelworks slags, 36 % were recovered in 2017 and 23 % were recycled within the steel industry. The recovered quantities went almost entirely to road construction. Unfortunately, the Steel Institute has no information on the number of granulation plants for blast furnace slag in Brazil.
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Zinc recovery is over 99% and iron recovery over 98%. The content of heavy metals (Zn + Pb + Cu) in glassy slag is below 0.2%, which ensures very low leachability. Smelting parameters.
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According to the above results, the ideal PGMs collection performance could be achieved by smelting at 1250 °C for 2 h in N 2 with the mass ratios of nickel matte, Na 2 B 4 O 7 and Na 2 CO 3 to spent catalyst of 1.25, 0.575 and 0.125, respectively. The corresponding optimal sample volume was ~55 mL.
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The flotation has been investigated for recovery of metals from copper slag using collectors, frothers, modifiers and depressants. ... The use of copper slag in the concrete industry as a partial replacement for cement and/or fine aggregates could potentially reduce environmental harm and also reduce the costs of slag disposal ...
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iron, etc. Then, the theoretical assessments of the recovery potentials of the metals were estimated for slag dumps. Copper (Cu), vanadium (V), molybdenum (Mo) and nickel (Ni) have high recovery potential. The total economic value of the recovery potential of metals from slag dumps was assessed to be USD 1175.7440 million.
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The global shortage of zinc mines makes the extraction of zinc from zinc-containing wastes a hot research topic. Most kinds of steel mill dust (SMD) cannot be directly returned to the ironmaking and steelmaking processes due to their zinc content. A large amount of SMD produced during steelmaking has become a major challenge for …
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Solid waste from the copper smelting industry may be harmful if disposed of in the environment, but it may be a valuable resource if metals can be recovered. The purpose of this study was to evaluate the acid bioleaching of metals from a sample of final smelter slag and the recovery of metals from the leach liquors. Bioleaching was tested in a …
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This novel process involves a series of hydrometallurgical separations. It is economically viable and robust for recovery of many metals, including relatively inert metals such as gold and platinum group metals. It is also able to produce gold and silver ingots from raw anode slimes in only five (5) days.
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SLAG - IRON AND STEEL Indian Minerals Yearbook 2018 (Part- II : Metals and Alloys) 57th Edition SLAG - IRON AND STEEL (ADVANCED RELEASE) GOVERNMENT OF INDIA MINISTRY OF MINES INDIAN BUREAU OF MINES Indira Bhavan, Civil Lines, NAGPUR – 440 001 PHONE/FAX NO. (0712) 2565471 PBX : (0712) 2562649, 2560544, …
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Initially the slag contained 2 wt% Ni and 1 wt% Cu, Co and P each, added as oxides, and at PO2 = 10⁻⁷ atm, these metals were only present in the slag with no metal alloy formed.
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Abstract. In this study, the copper bearing particle of a fayalitic copper slag was assessed using quantitative evaluation of minerals by scanning electron microscopy (QEMSCAN) and X-ray computed ...
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Abstract. This paper highlights the production capacity, type and quantity of solid wastes generated, their chemical composition and treatment/disposal options for the Indian aluminium, copper lead and zinc industries. Red mud, spent pot lining (SPL), fly ash from aluminium industries; scrap, slag, dross, reverts, slime, flue dust, mill scales ...
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The aim of this research was to recover the tin contained in tin slag. Before coming to the electrolysis, tin slag must be treated by dissolution. The grinded tin slag was dissolved into HCl solution to form a slurry. During dissolution, the slurry was agitated and heated, and finally filtered. The filtrate obtained was then electrolyzed.
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The steel industry, in accordance with the momentum of greener industry, has welcomed the changes and is actively pursuing that objective. One such activity is the commitment to energy recovery from by-products such as slag since the average energy content of ferrous slags is around 1 to 2 GJ/tslag. The recovered energy could, then, be …
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DOI: 10.1016/J.MINENG.2011.02.011 Corpus ID: 93163957; Bioleaching and recovery of metals from final slag waste of the copper smelting industry @article{Kaksonen2011BioleachingAR, title={Bioleaching and recovery of metals from final slag waste of the copper smelting industry}, author={Anna H. Kaksonen and Leena …
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By applying mineral processing technologies, such as crushing, grinding, magnetic separation, eddy current separation, flotation and so on, leaching or roasting, it is possible to recover metals such as Fe, Cr, Cu, Al, Pb, Zn, Co, Ni, Nb, Ta, Au, and Ag etc. from the slags. Recovery of metals from the slags and utilisation of the slags are ...
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Studies were carried out at R&D, Tata Steel to develop a flow sheet for the recovery of metal from metal–slag mix generated in its charge chrome (ferrochrome with 50–60% chromium) plant, Bamnipal. The studies showed that in the case of the charge chrome plant, crushing of mixed metal and slag to below 10 mm followed by jigging of …
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Deep Processing of Dump Slag from the Copper-Nickel Industry. Article. Full-text available. Jul 2023; Alexsandr G Kasikov ... Under the optimal metal recovery conditions, the leaching ...
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The iron and steel industry is a worldwide pillar industry that plays an irreplaceable ... Kauppi, M. Production, characteristics and use of ferrochromium slags. In Proceedings of the INFACON XI, New Delhi, India, 18–21 February 2007; pp. 171–179. ... C.V.G.K. Recovery of metal from slag/mixed metal generated in ferroalloy plants-a …
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High-temperature waste heat from the iron and steel industry, as shown in Fig. 1, are mainly stored in products, molten slag and waste gas [2].Molten slag, as a kind of by-product during the steelmaking process, is exhausted in extremely high temperature and thus, it carries a great deal of high-grade heat accounting for 10% of waste energy in …
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Moreover, the recovery of the valuable metal (Pb, Zn, Cu, and Fe) from copper slag can further reduce production costs. Compared to the purchase cost of raw materials in the production of stainless-steel, the price of crude stainless-steel reaches USD 10000 per tonne, and it can be significantly improved with the increase in the recovery …
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The purpose of this study was to evaluate the acid bioleaching of metals from a sample of final smelter slag and the recovery of metals from the leach liquors. Bioleaching was tested in a continuously stirred tank reactor (CSTR) at 20–25 °C with 5% pulp density (particle size 75% <47 lm).
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At Tata Steel Ltd, Bamnipal, India, the recovery of metal values from ferrochrome slag has been successfully carried out by jigging [5]. A commercial jig plant has been installed in South Africa ...
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From 1989 to 2005, the storage of Cr slag in the chemical industry has increased to 288400 tons, whereas this industry took no any other detoxi-fication treatment in order to saving treatment cost.
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Annually more than 400 Mt of metallurgical slags are produced worldwide [1,2,3,4,5].From the annual Cu concentrate smelter production capacity, which is equal to around 21 Mt of copper metal in 2021, it can be estimated that more than 45 Mt of CUS were produced from primary sources assuming a slag to copper ratio of 2.2 [3, 4].Only …
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Recovery of metal from slag/mixed metal generated in ferroalloy plants—a case study ... the ferroalloy plants felt the need for recovery of metal from slags. Attempts by industry to use physical separation …
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Bioleaching and recovery of metals from final smelter slag was studied. Metal yields after 29 days of leaching were 41% Fe, 62% Cu, 35% Zn and 44% Ni. Metals were subsequently precipitated using biogenic sulfide. Over 98% of Cu precipitated at pH ⩾ 2.8 and over 99% of Zn precipitated at pH ⩾ 3.9. The precipitation of Ni and Fe required ...
Detailsered 96% of copper from a concentrate containing 44% C u by floatation method. using a collector (potassium amylxanthate) and a frother (pine oil) at pH 8– 9. Similarly, Cankut [106] recovered ...
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PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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