Identification of possible dioxin emission reduction strategies in pre-existing iron ore sinter plants

Boscolo, Marco; Padoano, Elio; Tommasi, Salvatore

doi:10.1179/174328107x247815

Cited by 15 publications

(9 citation statements)

References 20 publications

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“…Dioxins: sintering has been recognized as an important source of organic micro-pollutants such as PCDDs and PCDFs [7,[60][61][62][63]. The mechanism of PCDD and PCDF formation in sinter plants is complex and associated to a de novo synthesis process [64]. The range of PCDD/F emissions in the EU-25 in 2004 is from 0.15 to 14.64 μg I-TEQ/t sinter expressed on an annual average basis [7], with most plants in the range 0.2 to 6.0 μg I-TEQ/t sinter [7].…”

Section: Environmental Issuesmentioning

confidence: 99%

Iron Ore Agglomeration Technologies

González¹,

Piñuela-Noval²,

González³

2018

Iron Ores and Iron Oxide Materials

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Until the 1950s of the last century, the oxidized iron ores that were loaded into the blast furnace had granulometries within 10 and 120 mm. However, the depletion of highgrade iron ore sources has made necessary the utilization of concentration processes with the purpose of enriching the iron ore. Because of these processes, a fine granulometry is produced, and thus iron agglomeration process is necessary. There are several agglomeration processes including: briquetting, extrusion, nodulization, pelletizing and sintering, although pelletizing and sintering are the most widely used, and especially sintering process (70% blast furnace load). Apart from obtaining an agglomerated product, the objective is reaching the suitable characteristics (thermal, mechanical, physical, and chemical) in a product that is then fed into the blast furnace, achieving a homogenous and stable operation in this furnace with economical profitability.

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Section: Environmental Issuesmentioning

confidence: 99%

Iron Ore Agglomeration Technologies

González¹,

Piñuela-Noval²,

González³

2018

Iron Ores and Iron Oxide Materials

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“…Tables 1 and 2 summarise the implications for coke plant operators, which arose from these directives. The need to fulfil such specific requirements has posed a serious challenge to the existing coke plants, which are often characterised by structural or technological limitations [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A novel system for the abatement of fugitive emissions during charging in a by-product coke oven

Boscolo

Padoano

Bregant³

et al. 2019

Metall. Res. Technol.

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The article presents a study on the measures adopted in an existing coke plant in order to reduce levels of benzo(a)pyrene dispersed in the environment surrounding the facility. The area has been affected by significant levels of pollution from polycyclic aromatic compounds due to the fugitive emissions from the coke oven, which did not comply with the most recent regulation. A monitoring programme was therefore launched in order to support a framework for intervention. Several problems with the battery made it necessary to implement a novel system to collect and abate fugitive emissions during the operations. The monitoring of the fugitive emissions from the coke oven, before, during and after the implementation of the system, has shown a drop of the visible emission time at charging below 30 s, matched by the return of pollution from benzo(a)pyrene in the area below the legal limits (1 ng/Nm3). When compared to the installation costs, these results suggest that the proposed solution can be replicated in other existing by-product coke plants.

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“…2 As reported in a previous paper, 3 the Servola sinter plant is equipped with end-of-pipe removal technology which is among the best available. In particular, the Wetfine wet electrostatic precipitator, installed in 2002 to limit particulate matter emissions, is also able to remove dioxins.…”

Section: Introductionmentioning

confidence: 99%

Solutions for containing dioxin emissions from iron ore sintering at Italian plant

Boscolo

Padoano

2011

Ironmaking & Steelmaking

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The paper presents the results of a recent test campaign at an existing iron ore sintering plant in order to evaluate solutions to limit releases to air of dioxins. The solutions included primary containment measures (process integrated measures aimed at limiting the formation of pollutants) and secondary containment measures (end-of-pipe measures aimed at removing the pollutants produced), and the measurement campaign was planned to determine the operating conditions capable of complying with the legislation in force. The main aspects of the campaign are reported and the running conditions tested are defined. The results confirmed the need to integrate both types of containment measures in order to achieve the aims of the study

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Identification of possible dioxin emission reduction strategies in pre-existing iron ore sinter plants

Cited by 15 publications

References 20 publications

Iron Ore Agglomeration Technologies

Iron Ore Agglomeration Technologies

A novel system for the abatement of fugitive emissions during charging in a by-product coke oven

Solutions for containing dioxin emissions from iron ore sintering at Italian plant

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