Steel slag recycling - Harsco M

In addition, the slag from the BOS plant such as converter slag and ladle slag has useful properties once weathered to allow for expansion of the lime-bearing material. EAF slag is a strong and durable material which is highly versatile and ideally suited for use as an aggregate in many applications.

Dissolution Behavior of Fluorine from AOD Slag after ...

AOD slag samples from steel works of Outokumpu Stainless Company were used to study F-dissolution relating to treatments for volume stabilization. Results from the slag tests and sample characterizations indicate that the slag re-melting with or without reduction and granulation with either water or gas have rather small effects on F leaching, as well as formation of different C2S polymorphs.

Argon Oxygen Decarburization Process | ispatguru.com

Argon oxygen decarburization (AOD) is a process primarily used in production of stainless steel and other high grade alloys such as silicon steels, tool steels, nickel-base alloys and cobalt-base alloys with oxidizable elements such as chromium and aluminum.

Mechanism and Prevention of Disintegration of AOD ...

Disintegration of AOD stainless steel slag can be effectively controlled by adding borax, and the adding amount is only 0.5% – 0.8%. This method can be easily industrialized. Previous article in issue

Phosphorus removal performance and speciation in ...

View This Abstract Online; Phosphorus removal performance and speciation in and modified argon oxygen decarburisation slag designed for wastewater treatment.

Ladle Metallurgy | ispatguru.com

Fig 1 Some of the ladle metallurgy processes Historical background The treatment of steel in the ladle started around 45 years ago when the first ladle-to-ladle and ladle-to-ingot mold vacuum degassing processes for hydrogen removal appeared on the scene.

slag mining plant f or gold - picoproductions.co.za

Dissolution Behavior of Fluorine from AOD Slag after Treatments for . identified C2S as a main F containing mineral in hot metal pretreatment and BOF . of F from AOD slag treated for dusting prevention and by the plant slag . some reduction of slag while it was …

ELECTRIC ARC FURNACE MELTED // AOD REFINED AOD …

aod, esr or var peeling, polishing, sawing, condition grinding, heat treat, quench capabilities, sawing and plate sawing optical emision, x-ray spectrometes, c/s, n/o, h analyzer units ingots pigs bars billets forged blocks slabs nitronic® weld wire g.o. carlson plate goc conversion services full chemistry lab service conversion or reclamation ...

classifiers separating fine slag - trattoriaamare.it

In an AOD slag dry innocent treatment metal recovery process, bulk steel ... spiral classifier is separated from the slag and fine muddy water... Chat Online. The Recovery of Chrome and Manganese Alloy Fines from Slag. MARS (Metal Alloy Recovery Systems), Ferrochrome from slag recovery plant at ... The Apic classifier is similar to an ...

AOD Furnace operation with GCP on - YouTube

Feb 02, 2014· AOD Furnace operation with GCP on. Skip navigation ... Argon Oxygen Decarburization Furnace Steel Slag (AOD ... Great Wall steel casting foundry process,customed slag pot,slag …

FAYALITE SLAG MODIFIED STAINLESS STEEL AOD SLAG

FAYALITE SLAG MODIFIED STAINLESS STEEL AOD SLAG Shuigen HUANG, Muxing GUO, Peter Tom JONES, Bart BLANPAIN ... Prior to the AOD slag stabilisation, the thermal stability of fayalite ... ZnO can be stabilised after the treatment. No fayalite is observed in all the treated slag.

Phosphorus removal performance and speciation in ...

The influences of initial P concentration, slag dose and modification by polyethylene glycol (PEG), an effective agent for generation of porous materials, were investigated to determine the optimal conditions for P removal by AOD slag. It was found that AOD slag removed 94.8% of P from a synthetic P solution in 4 h and 97.8% in 10 h.

Maximum availabilityandmineralogical controlofchromium ...

Presently, AOD slag could be reused in cement production, road construc-tion, civil engineering, fertilizer production, wastewater treatment, etc., due to its good technical properties (Zhang and Hong, 2011; Adegoloye et al., 2015). Con-versely, the release of chromium and other harmful components from AOD slag may lead to such environ-

Phosphorus removal performance and speciation in ...

Read "Phosphorus removal performance and speciation in and modified argon oxygen decarburisation slag designed for wastewater treatment, Water Research" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at …

Minerals characterization of stainless steel EAF and AOD slag

The high C/S value in the FS AOD slag results in the formation of high unstable C2S phase, which need to be stabilized with boron treatment to maintain slag intergrity. Conclusions Minerals characterization of stainless steel EAF and AOD slag S.G. Huang, D. Geysen, P.T. Jones, B. Blanpain

Treatments of AOD Slag to Produce Aggregates for Road ...

Treatments of AOD Slag to Produce Aggregates for Road Construction Qixing Yang Division of Process Metallurgy, Luleå University of Technology

ETP sludge as filler and the role of AOD slag & GBFS in ...

ETP sludge as filler and the role of AOD slag & GBFS in fly ash–slag–sludge blended geopolymer 380 Copright 2018 ingh et Citation: Singh JP, Sinha DK, Kumar S, et al. ETP sludge as filler and the role of AOD slag & GBFS in fly ash–slag–sludge blended geopolymer.MOJ Civil Eng.

Phosphorus removal performance and speciation in ...

Dec 15, 2015· Argon oxygen decarburisation (AOD) slag may be used for phosphorus (P) removal, as its high pH and weatherable calcium (Ca) minerals provide sufficient Ca(2+) and OH(-) for calcium phosphate (Ca-PO4) precipitation. This study examined the P removal performance of AOD slag for use as wastewater treatment material.

Phosphorus removal performance and speciation in ...

2 porous materials, were investigated to determine the optimal conditions for P removal by AOD slag. It was found that AOD slag removed 94.8% of P from a …

Treatments of AOD Slag to enhance recycling and resource ...

The reduced slag was either water granulated or cooled in an Al2O3 crucible. Metal droplets, suitable for recycling as metallic materials in the steelmaking, were recovered after the slag granulation. Characterizations of slag samples from the tests show considerable influences of the treatments on physical and mineralogical properties of the slag.

AOD slag treatments to recover metal and prevent slag dusting

Topics: AOD, Slag treatment, Metal recovery, Slag dusting prevention, 09 Engineering, 0914 Resources Engineering and Extractive Metallurgy

Phosphorus removal by slag depends on its mineralogical ...

Electric arc furnace slag (EAF) and argon oxygen decarburization slag (AOD) were investigated in column experiments to determine the effect of mineralogical composition on their P …

Dissolution behavior of fluorine in AOD slag from ... - CORE

These two parameters should be considered together in an optimum way to treat the slag for fluorine immobilization.It may be possible, based on the results obtained, to develop some environmental friendly and cost effective methods for the stainless steel industry to treat the AOD slag.

By-Product Applications - Harsco M

Harsco Metals processes and recycles a range of steelmaking slags, including BOS Slag, EAF Slag, AOD Slag, and Ladle Slags. The processing reflects: National or State Regulations specifying physical and mechanical properties of materials to be used

Argon oxygen decarburization - Wikipedia

Argon oxygen decarburization (AOD) is a process primarily used in stainless steel making and other high grade alloys with oxidizable elements such as chromium and aluminum. After initial melting the metal is then transferred to an AOD vessel where it will be subjected to three steps of refining; decarburization , reduction , and desulphurization .

Characteristics and Treatment Technologies of Stainless ...

Abstract: AOD slag samples from steel works of Outokumpu Stainless Company were used to study F-dissolution relating to treatments for volume stabilization. Results from the slag tests and sample characterizations indicate that the slag re-melting with or without reduction and granulation with either water or gas have rather small effects on F ...

(PDF) AOD slag treatments to recover metal and to prevent ...

Laboratory treatment tests of AOD slag from stainless steelmaking have been carried out by MiMeR, Minerals and Metals Recycling Research Centre, at Luleå University of Technology.

Phosphorus removal performance and speciation in ...

According to the XANES analysis, the main Ca-PO4 precipitate formed on AOD slag under low initial P concentration and high pH was apatite, while brushite was the dominant product at high initial P concentration and low pH.

Steelmaking through EAF / Induction Furnace – LF – VD ...

for better desulphurization highly basic and reducing slag is required. FeS + CaO = CaS + FeO. The removal of sulphur from molten steel is affected by the degree of deoxidation of the melt and slag, the slag basicity, temperature, stirring of the metal and slag and duration.

DISSOLUTION BEHAVIOR OF FLUORINE IN SLAGS FROM THE ...

DISSOLUTION BEHAVIOR OF FLUORINE IN AOD SLAG FROM THE PRODUCTION OF STAINLESS STEEL AFTER TREATMENT FOR VOLUME STABILIZATION Qixing Yang1, Fredrik Engström1, Jianli Li2, Anjun Xu2 and Bo Björkman1 1Minerals and Metals Research Laboratory, Luleå University of Technology, LTU SE-971 87, Luleå, Sweden

Iron and Steel making industry - Boldrocchi

Our company has a long experience in the EAF route steelmaking dedusting, with own technology a know-how, thanks to that is able to design and realize pollution control and heat exchange systems besides the noise control, for EAF, LF, MHS, BOF, AOD, Slag Treatment …

AOD slag treatments to recover metal and prevent slag ...

AOD slag treatments to recover metal and prevent slag dusting Mingzhao, He (2005). AOD slag treatments to recover metal and prevent slag dusting. In: Proceedings of The 7th Nordic-Japan Symposium Science and Technology of Process Metallurgy. 7th Nordic-Japan Symposium Science and Technology of Process Metallurgy, Stockholm, Sweden, (23:1-23:14).