Slag recovery - SlideShare

Chromium recovery from ferrochrome slag can reach high values of 90–99 per cent within a reasonable time. Most of the chromium left in high carbon ferrochrome slag was found to exist as undissolved chromite. Eric and Akyuzlu (1990)19 investigated the slag/metal equilibrium in FeCr production conditions.

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

If we accept the evidence presented elsewhere (7) that metallic Fe is the effective (intermediary) reductant in the process, it may be more correct to say that the recovery of valuable metals is related to a combined function of the iron and non-ferrous metal contents of the initial slag. Figure 4 - Recovery of Co to the alloy, as a function of ...

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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 ...

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I. PRINCIPLES OF EXTRACTIVE METALLURGY

Immiscibility of metal and slag together with density difference forms the basis for separation. ... of process (energy, recovery, separation efficiency, productivity etc), cost of production and ... Ferrous dealing with iron and steel Non Ferrous includes all other …

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Recovery of Valuable Metals from Copper Slag by ...

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 SiO2, Fe and Cu, respectively, were obtained under optimized parameters: solid-to-liquid ratio is 1:10; concentration of hydrochloric acid is 35%; the reaction time is 2 hours and at 80-90°C.

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A new technological approach to the granulation of slag ...

The technological factors required to improve the operational properties of granulated metallurgical slags demanded in the building industry have been analyzed. In order to satisfy these factors, a new technology for hydro-vacuum granulation of slag melts (HVG) has been developed. It is shown that the main advantage of the proposed HVG process is the provision of forced high-speed …

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Steel Slag Processing — Ecofertec

Metal Recovery Plant. ECOFERTEC is designing customized steel slag processing and metal recovery plants for each project-specific purposes. The newest technology ECOFERTEC slag processing plant enables the most cost-effective way to remove steel from slag with 300 ton/h capacity. One plant can handle 1,5 M ton of slag per year in two shifts.

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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 valuable metals occur in nickel slag, high yields are ...

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Hydrometallurgy, Pyrometallurgy, and Extraction and ...

Expert focuses his technical and project management experience on the recovery, separation, and refining of raw materials containing metals, by means of hydrometallurgy and pyrometallurgy. Expert has 38 years of experience, is a Registered Professional Engineer, has authored 33 technical papers, and holds 30 U.S. patents.

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(PDF) Re-Use of Silico-Manganese Slag

of steel metallurgy, ... Thus, it was demonstrated that the self-developed separation technology has the potential to improve the iron recovery of the fine-grained steel slag.

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Separation of heavy metals from hazardous lead slag by ...

In this study, the carbothermic reduction and volatilization were applied to recover valuable metals from lead slag. The removal and volatilization mechanisms, especially the migration and distribution behavior of heavy metals, were investigated. The results showed that …

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Reduction of steel‐making slags for recovery of valuable ...

The slag products include a metallurgical powder for desulfurization of steel, hydraulic binder and slag stones for construction applications. The metals obtained are rich in Fe, Mn, V and Cr depending on the treated slag and residues. The environmental compatibility and mechanical properties of the slags have been improved after slag reduction.

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(PDF) Metal recovery by microbial electro-metallurgy ...

In the slipstream of these discoveries, removal and recovery of an assortment of metals with METs appeared. For prag- matism here we term these processes as microbial electro-metallurgy (MEM). MEM works under the overall principles of METs but, within the …

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CHROMIC: NEW PROCESSES TO RECOVER METALS FROM …

unlock the potential of these resources, by developing new sustainable ways of metal recovery, leading to a zero-waste recycling of the entire slag materials. An important aspect hereby is that CHROMIC does not focus only on recovery of the metals, but simultaneously wants to improve the residual matrix material (i.e. the bulk) for further

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Slag PM – Recovery Precious Metals from Old Slag

Recover Precious and Base Metals. A unique reclamation project to recover precious and base metals from the reprocessing of slag produced from the old smelters of copper ore. The silicate slag from old smelting operations was systematically deposited into a semi-homogenous pile, with significant amounts of gold and other valuable metals "locked ...

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Mine Slag -Precious Metal Recovery - Just Refiners

Mine Slag -Precious Metal Recovery Created by Bobby Boekhoud/Just Refiners USA, Inc. on 9 May 2017 (Updated 21 January 2019) Refinery Slag Process Recovery Test Work . Composite samples of typical Mine Refinery Slags were tested for projected recoveries of Gold and Silver when processed onsite, assuming average types and grades.

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(PDF) Base metals recovery from copper smelter slag by ...

Kinetic of metal recovery by oxidising leaching with H2SO4 measured during the leaching were 292, 358, 434, of copper slag (10% solid, particle size: < 100 Am, pH 2.5, 622 and 645 mV at 15, 30 60, 90 and 120 min, temperature: 70 jC, H2O2: 35 L/(h t)). respectively.

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

Copper slag was characterized and processed. The pyro-metallurgical processing prospects to generate utilizable materials were arrived at through rigorous thermodynamic analysis. 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 ...

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US2653868A - Recovery of metals from metallurgical slag ...

9 metals Chemical class 0.000 title description 3 238000011084 recovery Methods 0.000 title description 3 Recovery of metals from metallurgical slag

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An Overview of Recovery of Metals from Slags

In situations like these, a combination of techniques can recover metals from the slag, such as additional stirring, size reduction, magnetic separation, flotation, leaching or roasting [2, [4] [5 ...

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

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 ...

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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 ...

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Recovery of base metals and PGMs in a DC alloy-smelting ...

Recovery of base metals and PGMs in a DC alloy-smelting furnace For the purposes of developing an equation that describes the recovery of metals, the simple relationship between Co and Fe is considered here. However, the same principles can be applied to other base metals too. The equation development below builds on and extends earlier work2 ...

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Borates in Metallurgy and Gold Refinement | U.S. Borax

Lead recycling and metals recovery. Recycling and recovery of metals such as brass, bronze, copper, lead, zinc, and aluminum can come from scrap or from slag that is left over from a primary smelting operation. The production of a product as pure as primary metal requires the removal of all oxides and extraneous impurities.

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Metal slag processing // REMONDIS´ Lippe Plant

Practically all of the metals contained in the slag can be recovered. Go to recycling process. The special feature of LEGRAN's metal slag processing system at the Lippe Plant is the way the material is treated. The slag and spent refractories need to be pulverised before they can be processed and this job is carried out by a rod and ball mill ...

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Leaching in Metallurgy and Metal Recovery

The metal containing solid, such as concentrate, ore, residue, or slag, often undergoes size reduction via crushing and grinding prior to leaching. One example of a leaching process that uses vat leaching is gold cyanidation, the process of extracting gold from low-grade ores.

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Recovery of metals from melting furnace slag | Mining ...

Recovery of cobalt, nickel, and copper from slags, using DC …. The most effective means for the recovery of metals …. Molten slag may be fed directly to the 5.6 MVA furnace from a pre-melting …. When treating furnace slag ….

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Slag - Wikipedia

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 the smelting, and minimizing any re-oxidation of the final liquid metal product before the molten metal is removed from ...

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INVESTIGATION ON POSSIBLE USE OF PALM NUTSHELLS AS ...

metals was used for copper recovery. This slag was provided by Gecamines from the Democratic republic of Congo. Raw PKS samples were provided by artisanal palm oil producers from the Democratic Republic of Congo. Lime from the metallurgy laboratory of the University of Johannesburg. It was used as a flux to increase the basicity of the feed to ...

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METALLURGY – Tragl Technology

Metal recovered from slag is contaminated with harmful admixtures. High degree purification of raw materials by removal of harmful admixtures and ballast impurities using non-metallurgical methods. Recovery of ferrous, non-ferrous and rare metals of high purity (metal content up to 98%) 2. Losses of oxide forms of metals in slags

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