The chemical suitability for recycling of zinc contaminated steelmaking by-product dusts: The case of the UK steel plant

Stewart, D.; Scrimshire, Alex; Thomson, David; Bingham, Paul A.; Barron, Andrew R.

doi:10.1016/j.rcradv.2022.200073

Cited by 6 publications

(6 citation statements)

References 43 publications

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“…The major environmental Cd sources are Zn and Pb ores as it occurs naturally in their sulphide ores. Commercially, it is produced as a by-product of the Pb and Zn smelting processes (Stewart et al, 2022) Raw Zn, Zn alloys, and Zn compounds may have high concentrations of Cd, so that it may enter the river water from solid wastes as well (Emoyan et al, 2005). At sewage treatment plants, the presence of Cd in waste is a matter of great concern because sewage sludge contaminated with Cd becomes unfit for use in fertilising soils (Lokhande and Sathe, 2001;Penido et al, 2019).…”

Section: Cadmiummentioning

confidence: 99%

Seasonal changes and determination of heavy metal concentrations in Veshaw river of the Indian western Himalaya

Rather

Ara²,

Sharma³

et al. 2022

Front. Environ. Chem.

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Trace elements are a major pollutant in the river water and these pollutants are present in all components of the ecological system. Since time immemorial, the River Veshaw has been one of the important sources of water and has shaped the cultural and social values in the Kashmir Valley. This study was conducted in rural parts of South Kashmir in the Western Himalaya from February to January 2020–2022. The river Veshaw provides various ecosystem services to the local communities as well as in the upper and lower stream regions in the form of many direct and indirect ecosystem services. The river is polluted by human waste from both rural and urban communities, as well as by agricultural runoff and effluent discharges from a variety of industrial activities due to its proximity. Effluent that makes it to the river contains a variety of pollutants, some of which are trace elements that accumulate in the local ecosystem, killing off plants and animals and reducing biodiversity. Trace element levels in water and sediment were found to follow the trend as: Sangam > Khudwani > Kulgam > Nihama > Aharbal > Kingwattan. The dominance pattern of heavy metals in water was Pb > As > Cd. The overall trend showed a downward trend of heavy metals, indicating the effect of land area drainage and anthropogenic activities on the stream water. The dominance pattern of heavy metals in water was Pb > As > Cd. Heavy metals were not detected in the middle and upstream sites. The average levels of heavy metals were highest at Downstream (Sangam), with values of Cd, Pd ad As 0.0054, 0.038 and 0.038 mgL-1. This shows that land drainage and human activities have an effect on the water in the stream.

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Section: Cadmiummentioning

confidence: 99%

Seasonal changes and determination of heavy metal concentrations in Veshaw river of the Indian western Himalaya

Rather

Ara²,

Sharma³

et al. 2022

Front. Environ. Chem.

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“…Rotary hearth furnace process is the representative of pyrometallurgical process 27 , 28 . Daniel et al 29 explored the treatment scheme of blast furnace dust in UK steel plant. The results show that zinc in blast furnace dust mainly exists in the form of Zn 3-x O 4 , which will reduce the efficiency of hydrometallurgy recovery.…”

Section: Introductionmentioning

confidence: 99%

Process and mechanism of preparing metallized blast furnace burden from metallurgical dust and sludge

Gao,

Chai,

Wang

et al. 2024

Sci Rep

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Metallurgical dust and sludge are solid waste resources with recycling value. In recent years, rotary hearth furnace has become the most important means to treat metallurgical dust and sludge because of its wide range of raw materials and strong treatment capacity. In this study blast furnace ash and converter sludge were selected as the research objects, and high-quality metallized pellets were prepared based on the rotary hearth furnace process. The strength changed of pellets, the reduction process of iron oxides and the removal process of zinc during the roasting of pellets in rotary hearth furnace were studied. To explore the reasonable roasting condition for preparing metallized pellets in rotary hearth furnace. The optimum roasting temperature of the pellets was 1250℃ and the roasting time was 25 min. The compressive strength, metallization rate and dezincification rate of metallized pellets reached 1361N, 97.44% and 95.67%, respectively. The efficient resource utilization of various metallurgical dust and sludge is realized.

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“…Rotary hearth furnace process is the representative of pyrometallurgical process [28,29]. Daniel et al [30] explored the treatment scheme of blast furnace dust in UK steel plant. The results show that zinc in blast furnace dust mainly exists in the form of Zn 3 − x O 4 , which will reduce the e ciency of hydrometallurgy recovery.…”

Section: Introductionmentioning

confidence: 99%

Process and mechanism of preparing metallized blast furnace burden from metallurgical dust and sludge

Gao,

Chai,

Wang

et al. 2024

Preprint

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Metallurgical dust and sludge are solid waste resources with recycling value. In recent years, rotary hearth furnace has become the most important means to treat metallurgical dust and sludge because of its wide range of raw materials and strong treatment capacity. In this study blast furnace ash and OG sludge were selected as the research objects, and high-quality metallized pellets were prepared based on the rotary hearth furnace process. The strength changed of pellets, the reduction process of iron oxides and the removal process of zinc during the roasting of pellets in rotary hearth furnace were studied. To explore the reasonable roasting condition for preparing metallized pellets in rotary hearth furnace. The optimum roasting temperature of the pellets was 1250℃ and the roasting time was 25 min. The compressive strength, metallization rate and dezincification rate of metallized pellets reached 1361N, 97.44% and 95.67%, respectively. The efficient resource utilization of various metallurgical dust and sludge is realized.

show abstract

The chemical suitability for recycling of zinc contaminated steelmaking by-product dusts: The case of the UK steel plant

Cited by 6 publications

References 43 publications

Seasonal changes and determination of heavy metal concentrations in Veshaw river of the Indian western Himalaya

Seasonal changes and determination of heavy metal concentrations in Veshaw river of the Indian western Himalaya

Process and mechanism of preparing metallized blast furnace burden from metallurgical dust and sludge

Process and mechanism of preparing metallized blast furnace burden from metallurgical dust and sludge

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