Recycling steelmill byproducts – some practical developments and outstanding issues

Evans, Dave; Hartwell, Thomas; Jones, Natalie; Byrne, Christopher

doi:10.1179/irs.2004.31.6.435

Cited by 6 publications

(7 citation statements)

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“…Iron and steel slag (ISS) is a byproduct of iron refining processes [ 1 , 2 , 3 ]. In this research, steel-making slag, which was produced specifically during the steel-making process, was used.…”

Section: Introductionmentioning

confidence: 99%

Iron Elution from Iron and Steel Slag Using Bacterial Complex Identified from the Seawater

et al. 2021

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Iron and steel slag (ISS) is a byproduct of iron refining processes. The lack of iron in seawater can cause barren grounds where algae cannot grow. To improve the barren grounds of the sea, a supply of iron to the seawater is necessary. This study focused on bacteria interacting with ISS and promoting iron elution in seawater. Sulfitobacter sp. (TO1A) and Pseudomonas sp. (TO1B) were isolated from Tokyo Bay and Sagami Bay. The co-culture of both bacteria promoted more iron elution than individual cultures. After the incubation of both bacteria with ISS, quartz and vaterite appeared on the surface of the ISS. To maintain continuous iron elution from the ISS in the seawater, we also isolated Pseudoalteromonas sp. (TO7) that formed a yellow biofilm on the ISS. Iron was eluted by TO1A and TO1B, and biofilm was synthesized by TO7 continuously in the seawater. The present research is expected to contribute to the improvement of ISS usage as a material for the construction of seaweed forests.

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Section: Introductionmentioning

confidence: 99%

Iron Elution from Iron and Steel Slag Using Bacterial Complex Identified from the Seawater

et al. 2021

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“…With the increasing restrictions imposed by the environmental legislation, as well as market demands for environmentally friendly products and processes, many studies have been developed in order to reduce the generation of waste, through treatment and reuse. 3 New research segments seek the potential development of these residues as raw material for creating new composite materials made partly or entirely by waste. The rise of industrial waste as a category of alternative source of mineral resource requires the adoption of a qualified methodology, based on the environmental policies of classification and characterisation, besides the conduction of technical and economically feasible studies for applying these residues.…”

Section: Introductionmentioning

confidence: 99%

“…The rise of industrial waste as a category of alternative source of mineral resource requires the adoption of a qualified methodology, based on the environmental policies of classification and characterisation, besides the conduction of technical and economically feasible studies for applying these residues. 3,4 Problems associated with the production, consumption and disposal of refractory materials are an important environmental issue. Several types of refractory materials are used in the steel industry and the working line of various equipment of reduction metallurgy, such as MgO-C, Al 2 O 3 -MgO-C, and others.…”

Section: Introductionmentioning

confidence: 99%

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Recycling of steelworks refractories: processing and properties

Almeida¹,

Faria²,

Vieira

et al. 2016

Ironmaking & Steelmaking

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The maintenance of several steel-making equipment of the Companhia Siderúrgica Nacional (CSN/ Brazil) builds up about 11 000 tons of refractory waste per year. Most of that refractory waste is disposed off in landfill sites without any application. That action permanently excludes an important alternative source of raw material from the productive cycle. In this context, in the particular case in CSN, all critical points of the generation cycle and recycling of refractory waste were investigated, aiming to use these residues as reprocessed raw material in the Refractory Industryreverse logistics. The project implementation, through an integrated solution, was technically and financially feasible with an economic return of about US$ 1 million per year in terms of net present value. The reuse of this refractory waste also minimises the environmental impact generated by the production, consumption and disposal of refractory materials from steel production.

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“…7 High strength formable steel sheets in the form of hot rolled coiled strip for automotive applications have been studied. 8,9 In the present study, TMP of high silicon and low silicon steels was conducted using a laboratory hot rolling mill. Low silicon (i.e.…”

Section: Introductionmentioning

confidence: 99%

Effects of hot deformation and subsequent austempering on mechanical properties of high silicon and low silicon TRIP steel

Li¹,

Wu²

2008

Materials Science and Technology

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In the present paper, effects of hot deformation and subsequent austempering on the mechanical properties of high silicon and low silicon transformation induced plasticity (TRIP) steel were investigated. The results have shown that polygonal ferrite, granular bainite and a large amount of stabilised retained austenite can be obtained by thermomechanical processing (TMP). Mechanical properties increase with increasing finish rolling reduction and decreasing finish rolling temperature because of the stabilisation of retained austenite. The tensile strength and the total elongation of both steels reach the maximum (791, 794 MPa and 36, 37% respectively). Isothermal holding for 20 min at 400°C after hot deformation is the optimal process. Low silicon TRIP steel shows a larger uniform elongation owing to a stable n value, and it exhibits better mechanical properties than conventional high silicon TRIP steel.

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Recycling steelmill byproducts – some practical developments and outstanding issues

Cited by 6 publications

References 0 publications

Iron Elution from Iron and Steel Slag Using Bacterial Complex Identified from the Seawater

Iron Elution from Iron and Steel Slag Using Bacterial Complex Identified from the Seawater

Recycling of steelworks refractories: processing and properties

Effects of hot deformation and subsequent austempering on mechanical properties of high silicon and low silicon TRIP steel

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