iron recovery from slag processing

iron recovery from slag processing

Enhancement of Iron Recovery from

高达10%返现 · Jul 28, 2016 · Steelmaking slags are usually processed for iron recovery by dry magnetic separation. The recovered iron-rich products are recycled

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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 Copper Slag Through Oxidation

高达10%返现 · 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.

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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.

RECOVERY OF IRON FROM COPPER FLASH SMELTING SLAGS

CHAPTER 01 Metal Recovery INTRODUCTION The flash smelting process has been used in copper industry for a number of years and has replaced some conventional copper smelting processes in Chile. The high copper content in the slag in this process, require

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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 ...

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The recovery of Se by roasting process and Pb recovery by hydrometallurgical route seem to be the best options for the management of these wastes. ... Major constituents of FSF slag are iron and ...

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].

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May 01, 2020 · Hence, the separation of iron-bearing phases from steel slag is highly beneficial for both the improvement of cementitious properties of the slag residue and the recovery of iron resources. The iron recovery was usually conducted by means of multi-stage screening, multi-stage crushing, and multi-stage magnetic separation (Guo et al., 2018).

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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

WO2007066350A1 - 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 ...

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

C22B15/00. 1. 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.

Deep reduction recovery of iron from copper slag | IIETA

Dec 31, 2018 · Abstract: This paper explores the effects of reductant, flux, reduction temperature and reduction time on the iron content and iron recovery rate of the deep reduction product from copper slag containing 41.47% of iron. Through a series of tests, it is concluded that reduction temperature and reduction time are leading influencing factors on ...

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

Studies on the direct reduction of carbon-bearing pellets made from discarded copper slag have been conducted in this paper. They include the influences of reduction coal content, limestone content, industrial sodium carbonate content, reduction temperature, reduction time and layers of carbon-bearing pellets on reduction effect. Finally, the optimum conditions have been obtained.

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

Jul 01, 2019 · 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 ...

Slag/Dross Recovery-

Slag/Dross Recovery. Slag/dross and leaching residue are produced from the process of metal extraction. The commonly-seen slag/dross/residue includes copper dross, lead dross, tin slag, zinc leaching residue, antimony/arsenic dross, cadmium residue/cake, sulfur residue/cake, vanadium slag, nickel slag, iron tailing and iron bearing red-mud waste.

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

Minerals | Free Full-Text | Recovering Iron from Iron Ore ...

Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then, slag-tailing concrete composite admixtures were prepared from high-silica residues.

metal separation plant from steel slag

The iron/steel slag processing flow is ... magnetic separation treatment of the slag to recover the ... the converter, hot metal/molten steel ... Get Price Slag Wikipedia

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

Oct 05, 2015 · 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).

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

Mar 08, 2016 · 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.

Carbothermic Reduction of Bauxite Residue for Iron ...

% of iron recovery, leaving the slag residue open to rare earths processing downstream. Following the previous works towards bauxite residue, Kaußen and Friedrich looked into [10] the recovery of aluminium via three different methods; a) Bayer-type process, b) Bayer-type process with slag leaching, and c) soda sinter process.

(PDF) Slag Cleaning Equilibria in Iron Silicate Slag ...

The range 1473–1573 K (1200–1300 °C) between molten iron- iron-saturated iron–silicate based slag mixture was prepared saturated copper alloy and selected iron silicate slags, and by mixing prereduced FeO and ­SiO2 powders to form a slag, to demonstrate the effects on these distributions at different which initially contained 20, 25, 30 ...

Enhanced Recovery Process of Calcium Oxide and Metals from ...

Jul 01, 2017 · The iron and steel making (ISM) industry is one of the largest CO 2 emitters in the world. Despite a sustained global research effort, utilization of best available technologies will not result in CO 2 reductions for the industry that are sufficient to meet the Paris Climate Agreement. One area of the ISM process that still contains a large untapped potential for CO 2 reduction is the ...

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 ...

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.

[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 ...

Carbothermic Reduction of Bauxite Residue for Iron ...

[7] that conducted semi-industrial scale tests on the recovery of pig iron and viscous slag using an Electric Arc Furnace operating at 1540 °C. The slag was subsequently transformed into mineral wool. Borra et al [8] recovered pig iron at 1500-1600 °C, with the aim to enrich leftover slag for acid leaching of rare earths downstream.

Carbothermic Reduction of Bauxite Residue for Iron ...

% of iron recovery, leaving the slag residue open to rare earths processing downstream. Following the previous works towards bauxite residue, Kaußen and Friedrich looked into [10] the recovery of aluminium via three different methods; a) Bayer-type process, b) Bayer-type process with slag leaching, and c) soda sinter process.

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

Mar 08, 2016 · 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.

CN101225468B - Method for recovering gold, silver, iron ...

Thanks to the recovering method, the recovery rate of the gold and silver is above 95%, the iron recovery rate is above 85%, and the lead recovery rate is above 90%, the production cost is about 300 RMB per ton, the profit is over 700 RMB per ton, so that a multiple billion RMB profit is harvested, and the waste of the limited resource is reduced.

Searchlight Minerals Corp. Announces Significant Technical ...

May 09, 2014 · Searchlight Minerals Corp. today announced significant technical achievements in gold and iron recovery at its Clarkdale Slag Project. ... four

iron processing | Britannica

iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned.Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a relatively dense metal with a silvery white appearance and distinctive magnetic properties. It constitutes 5 percent by weight of the Earth’s crust, and it is the ...

(PDF) Slag Cleaning Equilibria in Iron Silicate Slag ...

The range 1473–1573 K (1200–1300 °C) between molten iron- iron-saturated iron–silicate based slag mixture was prepared saturated copper alloy and selected iron silicate slags, and by mixing prereduced FeO and ­SiO2 powders to form a slag, to demonstrate the effects on these distributions at different which initially contained 20, 25, 30 ...

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

RECOVERY OF COPPER FROM COPPER SLAG AND COPPER

Recovery of copper from copper slag and copper slag flotation tailings 77by oxidative leaching Leaching with ferric sulphate The slag and the slag flotation tailings were leached with ferric sulphate in 1 M sulphuric acid. The ferric iron concentration was varied in the range from 5 g/dm3 to

Iron and Steel - Converting by-products to feedstock - Steele

Conversion — Iron- and carbon-rich fines, dust and wet sludge converted to high-quality feedstock. Mixing — Connects fine carbon particles to iron oxides for improved reduction. Binder — Less binder for more high-value metallics and carbon recovery. Sizing — Our dies ensure precise sizing, from 10-150mm, for most smelting processes.