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Iron Recovery from Discarded Copper Slag in a RHF Direct ...

By using DR followed by a magnetic separation process for iron recovery from copper slag, Yang obtained iron powder of 92.05% iron content with an iron recovery rate of 81.01%, and Wang obtained iron powder of 92.96% iron content with an iron recovery rate of 93.49%. Both of their tests have achieved good results.

An overview of recovery of metals from slags

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 ...

Improving Beneficiation of Copper and Iron from Copper ...

An earlier work noted that magnetic separation is a feasible way to recover iron from the tailings of waste copper slag flotation. Unfortunately, the iron grade of magnetic products and the recovery of iron by the magnetic separation process is relatively low, only 52.21% and 38.09%, respectively, due to the

AU2005338902B2 - A process for recovery of iron from ...

The present invention relates to a process for recovery of iron from copper slag. This invention particularly relates to a process for recovery of iron from a waste like granulated copper slag generated during the production of copper from its ores by a pyrometallurgical method. The present invention will be useful for solving the ecological and environmental issues with an added economic ...

Iron Recovery from Nickel Slag by Aluminum Dross: A Static ...

Slag viscosity during iron recovery from nickel slag by aluminum dross was studied from 1773 to 1873 K, and the viscosity evolution in different periods was systemically discussed.

Process for recovery of iron from copper slag - Agrawal ...

A process for the recovery of iron from copper slag which comprises: i. selecting and grinding the copper slag to [the] a size in the range of 2-15 mm. ii. mixing homogeneously copper slag, a reductant and a flux in the ratio range between 20:1:4 to 20:3:10. iii.

Separation of silicon and iron in copper slag by ...

Approximately 2.0–3.0 t of copper slag (CS) containing 35%–45% iron is generated for every ton of copper produced during the pyrometallurgical process from copper concentrate. Therefore, the recovery of iron from CS utilizes a valuable metal and alleviates the environmental stress caused by stockpile. In this paper, a new method has been developed to realize the enrichment of iron in CS ...

Slag recycling - recovery

With high-quality iron ore grades with an iron content of 64 to 67 %, a blast furnace typically produces about 0.25 to 0.30 t of slag per t of pig iron. In the case of inferior grade ores below 60 %, the amount of slag is typically 0.35 to 0.50 slag/t of pig iron [1].

US20070283785A1 - Process for recovery of iron from copper ...

The present invention relates to a process for recovery of iron from copper slag. This invention particularly relates to a process for recovery of iron from a waste like granulated copper slag generated during the production of copper from its ores by a pyrometallurgical method. The present invention will be useful for solving the ecological and environmental issues with an added economic ...

Enhancement of Iron Recovery from Steelmaking Slag Fines ...

12%Steelmaking slags are usually processed for iron recovery by dry magnetic separation. The recovered iron-rich products are recycled back into the ironmaking and steelmaking processes to replace high-cost steel scrap and iron ores. However, current slag processing is far away from optimum conditions, especially for slag …

Cleaner recycling of iron from waste copper slag by using ...

There are two main ways for recovering iron from the copper slag: (i) first, Fe 2 SiO 4 is oxidized to Fe 3 O 4, and then the Fe 3 O 4 enriched concentrate can be obtained by magnetic separation (Zhang et al., 2005).The iron recovery in concentrate obtained by this way is low, and the Fe 3 O 4 concentrate needs to be reduced again to obtain metallic iron. (ii) Copper slag is reduced by …

[PDF] Recovery of iron from copper flash smelting slags ...

Abstract Copper slag is produced in large amounts in seven copper smelter plants in Chile, and it is estimated that around four million tons of slag are disposed every year, and another 40–45 million tons are historically cumulated. Copper slag contains iron in the range of 42–45%, which can be recovered and recycled along with the contained copper to obtain an iron–copper alloy and a ...

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

The most striking feature of this separation process is the variation of cobalt recovery according to the iron content in the alloy. This behaviour is shown in Figure 4. It can be seen that the recovery of cobalt (in percentage terms) is highest (albeit not by very much) in the case of the slag …

A review on lead slag generation, characteristics, and ...

The iron recovery from lead slag is difficult through the use of conventional mineral processing methods, whereas iron recovery is feasible via the direct reduction process (Guo et al., 2018). Iron is mainly in the form of fayalite (Fe 2 SiO 4 ) and magnetite (Fe 3 O 4 ); therefore, it can be extracted as iron concentration via direct reduction ...

UDC 669 . 054 . 82 : 669 . 184 . 244 . 66 Processing and ...

3. Steelmaking Slag Processing Technology The iron/steel slag processing flow is schematically shown in Fig. 2. Steelmaking slag is subjected to the following four process-es: ① solidify and cooling of the hot molten slag, ② crushing and magnetic separation treatment of the slag to recover the metal iron,

(PDF) Recovery of iron from copper slag | Urtnasan ...

A Study on the Recovery of Iron from Copper Slag with [14] Y. Liao, J. Zhou, F. Huang, Separating and recycling of Fe, Temperature, International Journal of Applied Engineering Cu, Zn from dumped copper slag by microwave irradiation Research, Number 2, 977-982 (2018).

Steel Slag - Material Description - User Guidelines for ...

The slag processor must also be aware of the general aggregate requirements of the end user. The processing of steel slags for metals recovery is not only important to remove excess steel at the market source for reuse at the steel plant, but is also important to facilitate the use of the nonmetallic steel slag as construction aggregate.

TOWARDS RED MUD VALORISATION: EAF SMELTING …

A smelting process for iron recovery and slag conditioning was investigated. Two slags were produced in an EAF under different fluxing conditions using lime and silica as fluxing agents. Iron was mainly recovered to the metal. Low S and acceptable P contents were achieved in the metal product.

(PDF) Reuse and Recycling of By-Products in the Steel ...

In addition, the use the energy of molten slag could reduce the process costs [43]. Moreover, bioleaching can be used for recovering metals, depending on the slag composition. Recently, a test on BOF slag for bacterial leaching and recovery of aluminium (Al), chromium (Cr) and vanadium (V) has been performed [44].

A method for recovery of iron, titanium, and vanadium from ...

12%Under the optimal conditions, 93.67% iron from the raw ore was recovered in the form of iron nugget with 95.44% iron grade. After a water leaching process, 85.61% of the vanadium from the roasting slag was leached, confirming the sodium oxidation of most of the vanadium oxides to water-soluble sodium vanadate during the roasting process.

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 ...

METHOD OF SEPARATING AND RECOVERING IRON FROM WASTE …

The present invention provides a method of separating and recovering iron from a waste non-ferrous slag, generated in a process for smelting of non-ferrous metals, including copper, zinc and lead, in which a reducing agent and a reaction catalyst are added to the crushed waste non-ferrous slag, and the mixture is subjected to a reduction reaction, thereby converting amorphous iron oxides ...

Recovery of Valuable Metals from Copper Smelter Slag by ...

Kinetic parameters for the slag sample decomposition process, as well as for zinc, copper and iron recovery process to water-soluble form, are found from the plots of 1 − (1 − X) 1/3 versus time at three operating temperatures (Table 5).

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. This can then be effectively reused in the steelmaking process.

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 ...

Reductive Smelting of Red Mud for Iron Recovery - Kaußen ...

Zhihong Yang, Zhenghai Ma, The Effect of Basicity and Calcium Fluoride on Glass‐Ceramic Production and Iron Recovery from Copper Slag, steel research international, 10.1002/srin.201600145, 88, 3, (2016).

Process for recovery of iron from copper slag - Patent US ...

US-2007283785-A1 chemical patent summary.

Recovery of uranium from slag from the electric furnace ...

RECOVERY OF URANIUM .l"ROM SLAG FROM THE ELECTRIC FURNACE PliJDUCTION OF PHOSPHORUS* by H. z. Cammack and G. L. Bridger ABSTRACT v When phosphate rock is reduced to elemental phosphorus with coke in the electric furnace process, the uranium in the phosphate rock virtually all goes into the by-product slag.

Green and efficient utilization of waste ferric-oxide ...

Thus, processing in the molten condition to recover the valuables is more energy efficient. Maweja et al. had attempt to clean the copper smelting slag from a water-jacket furnace by direct reduction (Maweja et al., 2009). But more coal were used to obtain the higher metals recovery, resulting in unacceptably high iron content in matte phase.

Iron Removal and Recovery in the Titanium Dioxide ...

Smelting of ilmenite to produce titania slag allows for the recovery of iron as high purity pig iron. However, in the production of synthetic rutile from ilmenite sands, iron is returned to the ...

Iron Recovery from Copper Slag Through Oxidation-Reduction ...

Recovery of iron from the copper slag is very essential not only for recycling the valuable metals and mineral resources but also for protecting the environment. The purpose of this study was to investigate the possibility of separating fayalite by oxidation-reduction process into Magnetite and silicate phases in intermediate temperature condition.