Processing industrial wastes with the liquid-phase reduction romelt process

Роменец, В. А.; Valavin, V. S.; Pokhvisnev, Yu. V.; Vandariev, S.

doi:10.1007/s11837-999-0239-8

Cited by 6 publications

(3 citation statements)

References 1 publication

(1 reference statement)

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“…1 The recycling of dust and sludge generated in integrated steel plants currently can be realised by sintering, cold bonded agglomeration, direct reduction and smelting reduction. [1][2][3][4][5][6] Nearly all the byproducts have traditionally been recycled in sintering plants. However, to avoid operational problems in sinter plants and blast furnaces the amount utilized is often limited.…”

Section: Introductionmentioning

confidence: 99%

Strength and high temperature behaviour of carbon composite pellets containing BOF fine dust

Wang

Xue

Zhao

et al. 2014

Ironmaking & Steelmaking

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Steel plants produce significant amounts of dust and sludge during iron and steel production. These wastes contain valuable elements, such as Fe, Cr, Ni, C, K and Na and should be handled properly to prevent them from polluting the environment. In order to utilise the BOF fine dust, the effects of the dust on cold bonded pelletising, solid state reduction and reduction melting behaviours of composite pellets made from iron ore and anthracite with added BOF fine dust were investigated at laboratory scale. The BOF dust was found to improve the cold compressive strength of the wet green carbon composite pellet, and increased with increasing dust content. Almost four times the amount of dust was needed to get the same effect on the strength of the pellet when it was used to replace bentonite. The carbothermic reduction of the composite pellet proceeded effectively at temperatures above 1200uC. The BOF dust had a positive effect on the reduction rate of the pellet, and the rate increased with increased dust content. The reduction of iron oxide was topochemical and conformed to a shrinking core kinetic model. The dust was found to improve the iron and slag melting separation rate of reduced pellets at 1400uC when its content was less than 23?11 wt-%. The liquidus temperature of the slag would decrease with the content of BOF dust increasing from zero to y30 wt-% and then increase if the content continued to become more in the experiment. Utilising the BOF dust as the binder and flux to adjust the composition of the slag system can potentially reduce the slag ratio and production cost compared with using bentonite and limestone. This work can help to find a new process for the effective utilisation of BOF dust in a more appropriate and environmentally friendly way.

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Section: Introductionmentioning

confidence: 99%

Strength and high temperature behaviour of carbon composite pellets containing BOF fine dust

Wang

Xue

Zhao

et al. 2014

Ironmaking & Steelmaking

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“…Romelt's [46] process for ironmaking is a smelting reduction process to produce hot metal. Romelt's process can treat any iron containing material, e.g., iron ore fines and concentrates, BF and BOF dusts and sludges, mill scale, iron bearing slags, scarfing wastes and turnings, and iron dusts etc.…”

Section: Other Processesmentioning

confidence: 99%

Towards the Circularity of the EU Steel Industry: Modern Technologies for the Recycling of the Dusts and Recovery of Resources

Simoni,

Reiter,

Suer

et al. 2024

Metals

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The EU steel industry accounts for a crude steel production of 140 Mt/y, provided by the integrated (57%) and electric (43%) routes, which respectively require up to 6.0 and 0.6 MWh/tCrudeSteel of energy input, and emits on average 1.85 and 0.4 tCO2/tCrudeSteel. The mitigation of such CO2 emissions is crucial, and would involve the direct avoidance of carbon, improvement of energy efficiency, and carbon capture. However, the environmental burden of the steel industry cannot be limited to this, given the very large amount (approximately 5 Mt) of residues landfilled every year in the EU. This practice cannot be sustained anymore, since it represents a detrimental waste of resources and burden to the environment. These aspects require prompt action to meet the Green Deal goals envisioned for 2030. This review paper aims to provide an overview of the main state-of-the-art technologies commercially (and not) available for the effective treatment of a wide variety of residues. To enrich this overview with further potential candidates towards a more sustainable steel manufacturing process, the combined application of two technologies (a plasma reactor and a RecoDust unit for the recovery of metals and minerals, respectively) at TRL 5-6 is also investigated here.

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“…Prime cost of crude steel is taken from [5]. Product cost in Russia in the present is characterized by considerable instability.…”

mentioning

confidence: 99%

The greenhouse index of sustainable development for metallurgical processes of production in aspect of green power

Lisienko

Ануфриев

Берг

et al. 2016

E3S Web of Conferences

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Processing industrial wastes with the liquid-phase reduction romelt process

Cited by 6 publications

References 1 publication

Strength and high temperature behaviour of carbon composite pellets containing BOF fine dust

Strength and high temperature behaviour of carbon composite pellets containing BOF fine dust

Towards the Circularity of the EU Steel Industry: Modern Technologies for the Recycling of the Dusts and Recovery of Resources

The greenhouse index of sustainable development for metallurgical processes of production in aspect of green power

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