fe recovery from steel making slag

An Experimental Study on Iron Recovery from Steelmaking ...

Not only copper and lead blast furnace slag but also converter slag of iron shows high Fe content. Morita et al. firstly invetigated the recovery of metallic iron from the converter steelmaking ...

Steel Slag - an overview | ScienceDirect Topics

Apr 04, 2012· Ironmaking and steelmaking slags are inevitably generated as a by-product from ironmaking and steelmaking processes. Main components of the slags are CaO, SiO 2, Al 2 O 3, MgO, and iron oxides, and the compositions of slags depend on the process.In the case of Japan, three types of slags, namely BF slag, BOF slag, and EAF slag are mainly produced, which amount is shown in …

Recovery of Steelmaking Slag and Granite Waste in the ...

intermetallic µ -phase (Fe 21Nb 19) containing approximately 60 mass percent Nb. The brittle µ- ... in very high recovery since no slag layer covers the liquid bath that could lead to trapping of alloying agent. ... is used primarily in carbon steel making and

Effect of Slag Composition on Phosphorus Separation from ...

Recovery of Phosphorus from Modified Steelmaking Slag with High P 2O 5 Content via Leaching and Precipitation ... To prepare a steelmaking slag for a CaO–SiO 2–Fe 2O 3 system, reagent-grade SiO 2, Fe 2O 3, Ca 3(PO 4) 2, MgO and K 2CO 3 were fully mixed, along with CaO, and heated in a Pt

5.0 Electric Arc Furnace Steelmaking

2015; 18(1) Recovery of Steelmaking Slag and Granite Waste in the Production of Rock Wool 205 2. Experimental Methods 2.1. Materials The raw materials used in this study were steelmaking slag from an Electric Arc Furnace (EAF), granite cutting residue from an industry on Espírito Santo State - …

Integration of coal gasification and waste heat recovery ...

To summarize these findings, adequate supplies of Ca, Si and Fe arenecessary for the recovery of paddy field. Importantly, soil amendments composed of steelmaking slag can provide an effective way to supply the required elements for soil recovery at low cost.

Extraction of Phosphorus and Recovery of Phosphate from ...

The primary components of iron and steel slag are limestone (CaO) and silica (SiO 2).Other components of blast furnace slag include alumina (Alsub>2 O 3) and magnesium oxide (MgO), as well as a small amount of sulfur (S), while steelmaking slag contains iron oxide (FeO) and magnesium oxide (MgO).In the case of steelmaking slag, the slag contains metal elements (such as iron) in oxide form ...

Recovery of Phosphorus from Modified Steelmaking Slag with ...

The present invention relates to a slag deoxidizer introduced into slag before tapping of the converter in the steelmaking process, Al-Mg intermetallic compound containing 3 to 10% by weight of magnesium and 90 to 97% by weight of aluminum, and the Al-Mg It provides limestone (CaCO 3 ) coated on the surface of the intermetallic compound.

Recovery of Phosphorus from Modified Steelmaking Slag …

2015; 18(1) Recovery of Steelmaking Slag and Granite Waste in the Production of Rock Wool 205 2. Experimental Methods 2.1. Materials The raw materials used in this study were steelmaking slag from an Electric Arc Furnace (EAF), granite cutting residue from an industry on Espírito Santo State - …

Evaluation of Titania-Rich Slag Produced from Titaniferous ...

Steel slag is an industrial byproduct obtained from the steel manufacturing industry. It is produced in large quantities during steel-making operations that use electric arc furnaces. Steel slag can also be produced by smelting iron ore in a basic oxygen furnace.

Steelmaking Slag - an overview | ScienceDirect Topics

AbstractIn order to optimise the recovery process of Fe and P from industrial steelmaking slag by microwave irradiation, the recovery ratios of Fe and P from slag–graphite mixtures were investigated. In the reduction of industrial slag by graphite at a fixed microwave processing time of 900 s using a microwave oven, the recovery ratio of Fe increased with increasing carbon equivalent (Ceq ...

Separation of valuable elements from steel making slag by ...

May 01, 2019· XRD results shows that steelmaking slags mainly consist of dicalciumsilicate (Ca 2 SiO 4), dicalciumferrite (Ca 2 Fe 2 O 5) and wüstite (Fe 1-x-y, Mgx, Mny)O z. It can be seen in Table 2 that there are no significant chemical differences between the size fraction classes of the slag.

Valorisation of steelmaking slag by microwave treatment ...

Jan 08, 2015· A method of recovering Fe from steel-making slag is disclosed. The method includes the steps of melting steel-making slag having a higher Fe content than iron-making slag by heating the steel-making slag to a first temperature; cooling the molten slag to a second temperature that is lower than the first temperature and then maintaining the same at the second temperature for a …

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

The present work is aimed at the development of a new sustainable method for the utilisation of valuable elements from the steelmaking slag. In the framework of the innovative concept earlier proposed by the authors for utilisation of steelmaking slags, oxidation of iron mono-oxide in the liquid slag was studied experimentally in different atmospheres and in the temperature range 1623–1823 K ...

Separation and recovery of phosphorus from steelmaking ...

Apr 18, 2017· Steelmaking slags are usually processed to recover iron for recycling in the ironmaking and steelmaking process which replaces high-cost purchased steel scrap and iron ores. It is crucial to quickly determine the total iron content in an iron-bearing slag product for prompt and accurate quality control of the slag product. The water displacement test has been widely adopted in the slag ...

Chemical characteristics of iron and steel slag : NIPPON ...

Jul 01, 2020· If the chlorination and carbo-chlorination methods could be applied to steelmaking slag for the recovery of valuable elements, it is expected that recycling and reuse of the recovered elements would increase in the iron and steel making industry, as well as other industries. ... the recovery of P from P ore and steel making slag requires a high ...

METHOD OF RECOVERING Fe FROM STEEL-MAKING SLAG - …

Nov 01, 2019· In addition to the P recovery, the P-removed steelmaking slag, which contains higher amounts of Fe t O and MnO, can be reutilized in a steel plant. Therefore, the extraction of the C 2 S–C 3 P solid solution from steelmaking slag is of significance in both the steelmaking …

Fast Assessment of Total Iron Contents in Steelmaking ...

Jan 15, 2003· 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.

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

In order to optimize the recovering process of Fe and P from steelmaking slag by the microwave irradiation, heating rates of various substances and recovery ratios of iron and phosphorus from slag ...

Utilization of steelmaking slag in Japan and the recent ...

Nov 14, 2018· Steelmaking slag contains a large amount of CaO so it is possible to store CO2 in carbonates forms using steelmaking slag slurry with mild conditions of temperature and CO2 pressure. Several studies have been made for the technological condition of CO2 sequestration with steelmaking slag slurry, including reaction time, liquid-to-solid ratio (L ...

An Experimental Study on Iron Recovery from Steelmaking ...

COURSE50. High temperature molten steelmaking slag is one form of unused sensible heat/waste heat. Its tem-perature usually reaches more than 1 200°C. In the COURSE50 Project, JFE Steel is in charge of develop-ing a technology for recovering the sensible heat of this steelmaking slag in the process of producing slag prod-ucts from steelmaking ...

Recovery of Steelmaking Slag and Granite Waste in the ...

May 26, 2018· Hence, steelmaking can be viewed as a P enrichment process and generates slag which has a potential to serve as a secondary resource of P. The fundamental system of steelmaking slag is CaO-FeO-SiO 2 which is formed inside the primary 2CaO・SiO 2 region, indicating that this phase precipitates at the early stage of cooling slag. P is unevenly ...

Development of Heat Recovery System from Steelmaking Slag

the steelmaking slag. Moreover, experiments were also performed on the recovery of phosphate from the leachate. 2. Experimental 2.1. Synthesis of Mineral Phases and Slag Steelmaking slag includes dephosphorization and decar-burization slags, where their composition and cooling con-ditions differ according to the steel works. We previously

JPH06256814A - Method for recovering iron content in ...

Typically, vanadium is recovered as a by-product from the ironmaking process, while the diluted titania slag is stockpiled. Fluxless smelting in a direct-current open-arc furnace is proposed as an opportunity to improve iron and vanadium recovery and potentially unlock the titanium as a slag product.

(PDF) Metal Recovery from BOF Steel Slag by Carbo-thermic ...

Nov 12, 2015· The acquisition of the Fe 3 O 4 enriched slags is of great significance for ... on the surface of molten BF slag: for heat recovery from molten slag by using a chemical reaction. ... steelmaking ...

FERRONIOBIUM ALLOYING TECHNIQUES IN IRON & STEEL …

Metal Recovery from Steelmaking Slag Qi Yu Master of Applied Science Materials Science and Engineering University of Toronto 2018 Abstract An experimental study was carried out to recover metal values from a steelmaking slag through air oxidation and magnetic separation. The oxidation of slag was carried out in both solid and

KR101277594B1 - Slag deoxidizer - Google Patents

PURPOSE: To efficiently recycle the iron content in a steelmaking slag in a low cost by utilizing slag rapid cooling process by spraying water in a closed pressure vessel, as for the recycling method by recovering the iron content in the steelmaking slag. CONSTITUTION: By allowing a molten steelmaking slag to flow into a slag pan, etc., the slag is solidified and made to be roughly crushed as ...

Properties and Uses of Steelmaking Slag – IspatGuru

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.