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An overview of recovery of metals from slags - ScienceDirect

01/01/2003  They usually contain a quantity of valuable metals except for BF slag. Recovery of metals from the slags and uitilization of the slags not only can save metal resource, but also can protect the environment. (2) Ferrous slags mainly include iron slag, steel slag, alloy steel slag and ferroalloy slag. Iron and steel slags have comparable or even better properties than their competitive materials ...

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Recovering metal from slag: From investigation to circuit ...

Buy Recovering metal from slag: From investigation to circuit design 01 by Richter, Douglas (ISBN: 9783330091009) from Amazon's Book Store. Everyday low prices and free delivery on eligible orders.

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An Overview of Recovery of Metals from Slags

Recovery of multisource metallurgical wastes can facilitate the recovery of valuable metals, and achieve the full utilization of slag. Recycling nickel slag by aluminum dross with converter-slag ...

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An overview of recovery of metals from slags - ScienceDirect

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. By applying mineral processing technologies, such as crushing, grinding, magnetic separation, eddy ...

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An overview of recovery of metals from slags - ScienceDirect

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. By applying mineral processing technologies, such as crushing, grinding, magnetic separation, eddy ...

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Recovery of metal values from copper slag and reuse of ...

Carbothermal reduction at elevated temperature (near 1440°C) helped recover a majority of the metal values (e.g., Fe, Cu and Mo) into the iron-rich alloy product which can be a feed material for steel making. On the other hand, the non-metallic residue, the secondary slag, can be used in the Limestone and ceramic industries. Reduction time and temperature and carbon content were shown to be the ...

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Recovering Metal From Slag

Nov 01 1997 The benefit of a plant to recover metal from slag is that in times of poor metal prices the smelter can shut down a furnace and still keep up capacity but at a reduced cost. During periods of high demand there is a low cost way of increasing capacity. Presented at Complex Ores 97 Bulawayo Zimbabwe March 1997 1253 1254 H.P. Mashanyare and R . Atoll Process Outline Recover Ferroalloy ...

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Bioleaching and recovery of metals from final slag waste ...

01/09/2011  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 higher pH values and was less efficient.

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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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Feasibility of recovering metals from associated slags

Keywords: selective precipitation technique, associated slag, recovering metals from slag. Slag CaO SiO 2 Al 2O 3 MgO B 2O 3 TiO 2 Ti-slag 27–28 22–25 14–15 7–8 0 22–23 B-slag 5–10 5–35 5–10 35–45 12–15 0 Figure 1. Flow chart for treatment of associated slags by SPT Table I Chemical composition of the associated slags (wt%) 184 MOLTEN SLAGS FLUXES AND SALTS steel Company ...

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US2653868A - Recovery of metals from metallurgical slag ...

Recovery of metals from metallurgical slag Download PDF Info Publication number US2653868A. US2653868A US19303250A US2653868A US 2653868 A US2653868 A US 2653868A US 19303250 A US19303250 A US 19303250A US 2653868 A US2653868 A US 2653868A Authority US United States Prior art keywords slag iron copper nickel amount Prior art date 1950-10-30 Legal status (The legal status is an

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recovering metal from slag - stichtingichthus.nl

Recovering metal from slag, 978-3-330-09100-9, Recovering metal from slag, 978-3-330-09100-9, Even though the fundamentals involved in extractive metallurgy have been known for centuries, there has always been room for improving the existing processes. This is no different in ferroalloy production: The problem of the metal recovery installation in a process plant stands out from the ...

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recovering metal from slag - lidvandeclub.nl

There are recovery methods known in the prior art that pertain to recovering precious metals from complex or carbonaceous ores, metal smelting slag, and used catalysts. They include electrochemical methods, pyrometallurgical methods which use reducing agents and heat-treatment, complexing agents such as cyanides, and leaching methods of recovery utilizing various acid solutions.

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

The most effective means for the recovery of metals involves the addition of a reductant (such as carbon) to capture some of the metals present in an oxidized form. Processes have previously been described in which carbothermic reduction has been carried out in electric furnaces (1-3). The aim of a slag cleaning process is to maximize the recovery of valuable metals (such as Co, Ni, and Cu) in ...

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An overview of recovery of metals from slags

They usually contain a quantity of valuable metals except for blast furnace slag and they are actually a secondary resource of metals. 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 ...

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Recovery of metal values from copper slag and reuse of ...

Carbothermal reduction at elevated temperature (near 1440°C) helped recover a majority of the metal values (e.g., Fe, Cu and Mo) into the iron-rich alloy product which can be a feed material for steel making. On the other hand, the non-metallic residue, the secondary slag, can be used in the Limestone and ceramic industries. Reduction time and temperature and carbon content were shown to be the ...

Get Price

Recovering Metal From Slag

Nov 01 1997 The benefit of a plant to recover metal from slag is that in times of poor metal prices the smelter can shut down a furnace and still keep up capacity but at a reduced cost. During periods of high demand there is a low cost way of increasing capacity. Presented at Complex Ores 97 Bulawayo Zimbabwe March 1997 1253 1254 H.P. Mashanyare and R . Atoll Process Outline Recover Ferroalloy ...

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Feasibility of recovering metals from associated slags

Keywords: selective precipitation technique, associated slag, recovering metals from slag. Slag CaO SiO 2 Al 2O 3 MgO B 2O 3 TiO 2 Ti-slag 27–28 22–25 14–15 7–8 0 22–23 B-slag 5–10 5–35 5–10 35–45 12–15 0 Figure 1. Flow chart for treatment of associated slags by SPT Table I Chemical composition of the associated slags (wt%) 184 MOLTEN SLAGS FLUXES AND SALTS steel

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Recovery of Precious Metals from Brass Slag, Cotton Bales ...

From high grade brass slag, we can recover brass ingots, copper ingots and zinc oxide powder. When slag is melted in closed chamber furnace, slag will again float and we will have more dense molten brass at bottom and slag is removed by separation means. Copper ingots and zinc oxide powder can be recovered using rotary furnace which separates metals by difference in density and difference in ...

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Recovery of Valuable Metals from Copper Slag by ...

Recovery of Valuable Metals from Copper Slag by Hydrometallurgy. Article Preview. Abstract: A novel hydrometallurgical method was developed to recycle valuable metals of Si, Fe and Cu from copper slag. The leaching rates of 98%, 99% and 91% for SiO 2, Fe and Cu, respectively, were obtained under optimized parameters: solid-to-liquid ratio is 1:10; concentration of hydrochloric acid is 35%; the ...

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Vanadium recovery from steel slag scales up - Chemical ...

01/09/2021  A hydrometallurgical process for recovering vanadium from slag, a byproduct of steelmaking, has been significantly scaled up. Previously deployed at mini-pilot and bench scales, the process, developed by Neometals Ltd. (West Perth, Australia; neometals.au), has now been expanded by a factor of 25, to process 14 tons of slag (corresponding to a throughput of around 25

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Method for precious metal recovery from slag - The ...

21/10/1999  There are recovery methods known in the prior art that pertain to recovering precious metals from complex or carbonaceous ores, metal smelting slag, and used catalysts. They include electrochemical methods, pyrometallurgical methods which use reducing agents and heat-treatment, complexing agents such as cyanides, and leaching methods of recovery utilizing various acid

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Metal Recovery and Crushing Plants Harsco Environmental

Designed to recover trapped metal from crushed slag, our custom-designed metal recovery (MR) plants ensure you can reuse materials in the steelmaking process. 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 ...

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Resource Recovery Harsco Environmental

Recovering valuable metal, we transform the non-metallic by-product into eco-products that create new and additional revenue streams for you. By way of various smelting processes, we then return the recovered metal in a form suitable for recycling. The non-metallic by-products are processed and conditioned to optimize their suitability for secondary use, and by recycling the recovered metal ...

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