Recovery of iron from copper slag

Copper slag is a by-product obtained during smelting and refining of copper. Copper smelting slag typically contains about 1 wt.% copper and 40 wt.% iron depending upon the initial ore quality and the furnace type. Main components of copper slag are

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Iron making in induction furnace for casting steel billets

Liquid iron in 50 tons ladle from induction furnace was poured into the EOF vessel and the required quantities of calcined lime was added for the removal of sulphur and phosphorus. ... During this refining process, slag was removed intermittently. It is known that, at certain conditions above 1600 °C, phosphorus from the slag enters the bath ...

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Separation and extraction of iron resources from hazardous …

The main components of EAF slag are Fe x O, Fe, CaO, SiO 2, MgO, and MnO.The EAF slag contains more iron, but it is mainly dominated by RO phase, which is difficult to be recovered by magnetic separation, resulting in low utilization of iron in slag (Liu et al., 2023, Zhang et al., 2019).The traditional view that EAF slag and converter slag are similar in nature, …

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The steel production transformation process in Europe: New slag …

The main challenge of the steel industry for the next decade is the steel production transformation process, starting in Europe. The CO 2 intensive blast furnace/basic oxygen furnace (BOF) route will be substituted by a combination of Direct Reduced Iron (DRI), based on natural gas, later on "green" hydrogen, with an Electric Arc Furnace (EAF) or a Submerged Arc Furnace (SAF), …

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Synergetic recovery of Ti and Fe from Ti-bearing blast furnace slag …

Ti-bearing blast furnace slag (TBFS) is a type of slag produced by smelting vanadium-titanium-bearing magnetite. About half of the Ti resources enter TBFS, which causes serious loss of Ti resources, so it is of great significance for the recovery of TBFS (Li and Yan, 2023).A large amount of TBFS is difficult to treat by conventional mineral processing, mainly …

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Preparation of Synthetic Titania Slag Relevant to the …

A high titania slag that is used as a feedstock for TiO2 manufacturing is obtained by ilmenite smelting (FeO.TiO2). The composition of the slag obtained by smelting is dependent on the composition of the mineral …

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Metallurgical resource recovery from waste …

Steel slag from an electric arc furnace (EAF) may contain significant amounts of oxides of valuable metals. The recovery of iron and other metals from the EAF slag using smelt-reduction...

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Phosphorous Control in Induction Furnace Steel Melting …

Induction furnace is better than electric arc furnace due to lower cost of production. [4]. In India a subsequent amount of steels are produced in Induction Furnace nowadays. Though it is a very effective process, but it has certain limitations also. In Induction Furnace it is very difficult to control Phosphorous (P).

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Waste Heat Recovery from Blast Furnace Slag by Chemical …

Blast furnace (BF) slag, which is the main byproduct in the ironmaking process, contains large amounts of sensible heat. To recover the heat, a new waste heat-recovery system—granulating molten BF slag by rotary multinozzles cup atomizer and pyrolyzing printed circuited board with obtained hot BF slag particle—was proposed in this study. The feasibility …

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Controlling Slag Defects, Insoluble Buildup in Melting …

Viscous non-metallic slags can negatively affect coreless, channel, and pressure-pour furnaces, causing slag formations on the furnace and/or …

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The Preparation of High-Purity Iron (99.987%) Employing a Process …

In this step, the composition of slag is adjusted to dephosphorize, if necessary. Step 3, the high basicity slag is dosed to refining for deoxidation. Similar to the process investigated in this study, researchers [9,10,11] have studied the process of smelting pure iron with DRI in an induction furnace, which has delivered good results. However ...

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Controlling Slag Defects, Insoluble Buildup in Melting …

In addition to being used to keep ladles clean and free of slag buildup, incorporating 1-1.5 lbs. of flux has improved the inductor life of pressure-pour furnaces and coreless induction furnaces around the world. Alkaline …

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Control of Slag Defects and Insoluble Buildup in Melting …

In electric furnaces and pressure pour furnaces, slags must have a high interfacial surface tension to prevent refractory attack and to facilitate their removal from the surface of the molten metal. …

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(PDF) Recovery of iron from electric arc furnace slag: effect of

This work presents the iron oxide recovery from electric arc furnace slag with different temperature and time using acid leaching method.

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Application of iron and steel slags in mitigating greenhouse gas

Therefore, molten slag heat recovery is important in the reduction of GHG emissions in the steel production process. The temperature of blast furnace molten slag in the temperature range of 1450 °C–1650 °C carries a large amount of high-grade thermal energy and undeveloped resources (Barati et al., 2011). Iron and steel slags are good ...

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WO2006107715A3

Operation of iron oxide recovery furnace for energy savings, volatile metal removal and slag control ... Use of a channel induction furnace to process at least one of a molten metal product, a vapor phase metal product and a slag product from a variety of feed materials ... Slag control in a channel induction furnace US7776126B2 (en) * 2008-03 ...

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Cupola slag

The melting of iron and steel in induction furnaces results in low emissions compared to the cupola furnace. Emissions due to the combustion of fossil fuel are especially prevented. An exhaust capture efficiency of up to 95 % is possible using special capture systems, such as side- draughts, movable hoods and partial covering of the furnace.

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Understand the Effects of Zinc Penetration on …

The ironmaking process requires some adjustments to minimize zinc contamination of the molten iron. For example, it helps to charge the zinc-coated steel scrap early in the melt cycle, allowing more time for the zinc to …

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The Preparation of High-Purity Iron (99.987%) …

In this study, high-purity iron with purity of 99.987 wt.% was prepared employing a process of direct reduction–melting separation–slag refining. The iron ore after pelletizing and roasting was reduced by hydrogen to obtain direct reduced iron …

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RECOVERY OF PIG IRON FROM COPPER SMELTING …

1795 as dust collector was miniaturized to reduce the difficulty and cost of the process. The entire controller of the high frequency induction melting furnace controls the heating temperature of

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(PDF) Induction Furnace -A Review

Depending on the specific process be ing used and the type of iron or ... the system generates 15% of by-products as slag. In the present study, induction furnace steel slags are replaced with ...

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Stack of Induction Furnace slag. | Download Scientific Diagram

Investigation on the effect of partially replacing induction furnace slag with river sand on the crushing strength of concrete revealed a very high strength at 30 % induction furnace slag content ...

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Development of synthetic slag for desulphurisation of the steel …

The evaluation of synthetic slag is performed in the induction furnace for desulphurisation of plain carbon and alloy steel. The maximum degree of desulphurisation is 84% with the addition of 2–3 wt% synthetic slag for Al killed steel while 32% for non-killed steel is achieved. The desulphurisation time to achieve the sulphur level (0.03–0. ...

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Studies on direct reduced iron melting in induction furnace

The induction heating model of two-phase melt in the iron removal process in an electromagnetic induction furnace was established, in which the real-time coupling of electromagnetic field ...

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Managing Coreless Induction Furnace Slag Build-Up

Fluxing of melting furnaces will eliminate slag build-up on coreless induction furnace sidewalls, improve slag fluidity, reduce melting costs by improving electrical efficiency, keep furnace volumes and ladles constant, and …

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Recent research progress on recycling metallurgical waste slag …

In addition, Ben steel and Tang steel [89] reused liquid refining slag in LF furnaces for three cycles, and then treated it as regular slag to maximize benefits. Tests showed an average addition of 262 kg of refining return slag per furnace, saving 216 kg of active ash and 41 kg of aluminum particles. The process specifics are depicted in Fig ...

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Synergistic treatment of blast furnace slag and basic oxygen …

Considering the compositional characteristics of BOF slag, the transformation of the iron-containing phase into (Mn,Mg) y Fe 3-y O 4 is the key step. Thus, a novel process for …

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A New Process for the Production of Ferrotitanium from Titania Slag

Titanium alloy was prepared from titania-bearing blast furnace slag (Ti-BF slag) by aluminothermic process in an induction furnace. The effects of aluminum amount on the titanium silicon yield and ...

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Slag recycling

The terms blast furnace slag (BFS) and granulated blast furnace slag, as well as LD slag and electric furnace slag are used for finer distinctions. With high-quality iron ore grades with an iron content of 64 to 67 %, a blast furnace typically …

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Control of Slag and Insoluble Buildup in Ladles, Melting and …

During the melting process, slag is generated from oxidation, dirt, sand and other impurities. Slag can also be generated from the scrap, erosion and wear of the refractory lining, oxidized …

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