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Recovery of metal values from copper slag and reuse of

Recovery of metal values from copper slag and reuse of residual secondary slag Waste Manag. 2017 Dec;70:272-281. doi: 10.1016/j.wasman.2017.09.024. On the other hand, the non-metallic residue, the secondary slag, can be used in the glass and ceramic industries. Reduction time and temperature and carbon content were shown to be the most

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Recovery and purification of metallic silicon from waste

Aug 20, 2019· The recovery rate (η) of metallic silicon from slag by electromagnetic separation and CaO–SiO 2 –CaCl 2 slag reagent addition with different holding times is calculated according to formula (1). (1) η = m M ⋅ A × 100 % where η represents the recovery rate of silicon from silicon slag. m, M and A are the mass of separated metallic

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slag grinding for metal recovery

recovery of metalic slag from hotslag Grinding Mill China recovery of metalic slag from hotslagrecovery of metalic slag from hotslag recovery of metallic slag from hot slag hyderabad metallic ore mining in northern wisconsin metallic ore mining in northern wisconsin 174 Crusher Heavy Industry shanghai is the best » Learn More Slag recovery...

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An overview of recovery of metals from slags ScienceDirect

Jan 01, 2003· For instance, slag 1 in Table 10 was reported containing covellite (CuS), slag 3 containing chalcocite (Cu 2 S) and metallic copper, Slag 4 containing chalcocite, bornite(Cu 5 FeS 4), metallic copper, stromeyerite and complex sulphides, and slag 5 containing bornite and metallic copper. 3.1.2. Methods for metal recovery from copper slag

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Metal Recovery from Steelmaking Slag

Metal Recovery from Steelmaking Slag Qi Yu Master of Applied Science Materials Science and Engineering University of Toronto 2018 Abstract An experimental study was carried out to recover metal values from a steelmaking slag through air oxidation and magnetic separation. The oxidation of slag was carried out in both solid and

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CHROMIC: NEW PROCESSES TO RECOVER METALS FROM

another challenge for the leaching step. In the ferrochrome slag, Cr is also contained within metallic ferrochrome particles. The concentrations of the other elements of interest (Mo, V, Nb) are too low for mineralogical identification. Carbon steel slag 0-5 mm ferrochrome slag stainless steel slag MW digestion 1 (HNO3, HF, H2O2, H3BO3) + ICP-OES

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Metal Recovery and Crushing Plants Harsco Environmental

Custom-designed for each application, our slag processing plants keeps the maximum environmental impact in mind. At our Metal Recovery Plant, a crushing and magnetic separation process is used to recover the metal contained in iron and steelmaking slag.

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Slag Wikipedia

Slag is the glass-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore.Slag is usually a mixture of metal oxides and silicon dioxide.However, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of

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Valorization of BOF Steel Slag by Reduction and Phase

Mar 20, 2017· Basic oxygen furnace (BOF) steel slag is a main byproduct in steelmaking, and its valorization is therefore of considerable interest, from a metal-recovery perspective and from a residue-utilization perspective. In the present study, the carbothermic reduction of BOF slag was investigated systematically. The reductions of Fe- and P-containing phases (i.e., oxide and compounds) are

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Recovery of cobalt, nickel, and copper from slags, using

This approach is satisfactory when the metals in the slag are in either the sulphide or metallic form, but is not suitable for the recovery of oxidized metals. Cobalt in particular, and nickel to a lesser extent, are found in an oxidized form, and for these slags, treatment in an electric furnace operated under reducing conditions is necessary.

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SWEREA MEFOS PERSPECTIVE ON METAL RECOVERY

Direct hot slag reduction The hot slag reduction aims at efficient use of the sensible energy in the molten slag which has a heat value of about 600 kWh/tonne slag. The hot slag reduction has been initially tested in a 2 tonne slag scale in 1999 using a very simple set-up at Swerea MEFOS.

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SWEREA MEFOS PERSPECTIVE ON METAL RECOVERY

Cold or hot slag High V-recovery Slag could be used in cement What reactor best? Several products Basic high V-slag FeV (10-20%V, 1%P) Acid high V-slag Pig iron Reduced clen slag Summary of VILD project 24 Third International Slag Valorisation Symposium │ Ye, Lindvall, Magnusson 22/03/2013

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(PDF) Waste Heat Recovery from Blast Furnace Slag by

Slag heat recovery can also be achieved by water quenching. Qin et al. [18] analyzed a system for slag waste heat recovery. A new system for recovering and utilizing the waste heat from slag based

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Recovery of cobalt, nickel, and copper from slags, using

Note that, for the purposes of these calculations, all of the Co, Cu, and Ni in the feed slag was assumed to be in the oxidized form, i.e. present as CoO (1.272% or 0.254%), Cu 2 O (0.563%), and NiO (2.546%).. When carbon is added to the slag, the various metallic elements reduce to different extents, at a given level of carbon addition.

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Improving Copper Recovery from Production Slags by

With the existing process route in the pyrometallurgy of copper the recovery of valuable metals from the slag phase is not sufficient. The selective separation or enrichment of these metals into a metallic or matte phase would lead to an improved exploitation of the available potential. Beside economic reasons also ecological benefits would be

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Slag Wikipedia

Slag is the glass-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore.Slag is usually a mixture of metal oxides and silicon dioxide.However, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of

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RECOVERY OF METAL VALUES FROM COPPER SLAG THE

The slag material normally contains appreciable amounts of various metal values, including (depending on the nature of the ore) copper, iron, zinc, lead, and other materials all in combination with alkaline earth metals in a matrix of metallic and non-metallic silicates. The recovery of these metal values has not been found attractive up to the

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WO2017100808A1 Manganese waste slag treatment Google

A method of processing a ferroalloy waste slag in a reactor which includes the steps of treating the slag with a metallic reductant and a conditioning flux to release a metal oxide and reduce it to metallic form, to use as a commercially acceptable silicon-containing alloy and to form a waste slag which is detoxified by means of granulation and separating the detoxified slag from silicon

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THE EFFECT OF COOLING RATE OF SLAG FROM PRIMARY

W/mK) in the slag, on which a steel shell (λ = 50 W/mK) is continued. Effective coefficient of convective heat transfer for day 1, α1, contains the portion of natural convection (αair) to ambient air and the portion of radiation (αrad) from hot slag and outer surface of the ladle to

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Recovery of Titanium from Blast Furnace Slag Industrial

Titanium is one of the most valuable elements found in blast furnace slag, with a concentration of approximate 2.7%. Because of the low level of titanium in slag, the best method of extraction is hydrometallurgy. In this study, parameters such as slag particle size, temperature, concentration of acid, solid-to-liquid ratio, and ultrasonic wave time were used to determine the recovery of

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US6264039B1 Method for precious metal recovery from slag

The present invention, therefore, provides stage crushing method for recovering precious metals from slag produced by a coal burning furnace or boiler comprising: a plurality of crushing steps, wherein each crushing step produces slag particles having successively smaller particle diameter sizes, said crushing steps continued until a final desired particle diameter sized is obtained; wherein

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Heat Recovery Process from Packed Bed of Hot Slag Plates

2.2. Pilot-scale Slag Heat Recovery Experiment. As a next step to verify the feasibility of this process, pilot-scale slag heat recovery experiments were carried out with a heat recovery chamber having an inner diameter 6.5 times larger than the previous laboratory-scale device. 20,21) Figure 3 is a schematic diagram of this pilot plant. The left side of Fig. 3 shows a twin-roll type slag

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[PDF] SWEREA MEFOS PERSPECTIVE ON METAL RECOVERY FROM

Every year the metallurgical industry generates huge amounts of slag. The annual amount of generated steelmaking slags alone is more than 150 million tonnes and contains more than 20 million tonnes of iron, 6 million tonnes of manganese and 1 million tonnes of phosphorus. Full utilisation of this huge amount of a by-product is limited by its leaching properties and volume stability and the

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grizzly feeder steel recovery from eaf slag in kenya

Grizzly Feeder Steel Recovery From Eaf Slag. Eaf Slag Metal Recovery Apr 09, 2013 During the production of steel, electric arc furnace react to form iron metal, slag and percentage of volatile metal recovery and an grizzly feeder steel recovery from eaf slag 10 body roller mill, gold,copper,iron ore crushers grizzly feeder steel recovery from eaf slag Click here for free chat, to get profit at

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