Dissertação
Siderurgia sustentável : uma análise ampliada dos desafios do carvão vegetal como estratégia para mitigação de emissões de dióxido de carbono
Fecha
2021-07-28Autor
Michelle Xavier de Paula
Institución
Resumen
The Brazilian steel industry has always been prominent in the economic sphere and has
great notability in the world ranking of steel producers. The steel industry is responsible
for a significant portion of global emissions of greenhouse gases and, despite the emissions
of the Brazilian steel sector being lower than those of developed countries, the Country
voluntarily joined the global efforts to combat climate change. In December 2009, Federal
Law No. 12,187 was enacted, which instituted the National Policy on Climate Change in
Brazil, aimed at consolidating a lowcarbon economy. Federal Decree No. 9,578, of
November 22, 2018, regulated the aforementioned Law and consolidated the normative
acts that provide for the National Fund on Climate Change and the National Policy on
Climate Change and instituted, in its Article 17, the Sectorial Plan for the Reduction of
Steel Industry Emissions. The purpose of this work was to evaluate the contribution of
charcoal steel in the mitigation of carbon dioxide emissions, one of the main villains of
global warming. For this purpose, CO2 balances were drawn up for charcoalfired steel
mills, based on the CO2 fixation coefficient of the pig iron production cycle and the
average annual production of the sector in Minas Gerais. The methodology used, based on
the method proposed by the IPCC to estimate CO2 emissions from pig iron production,
through the blast furnace (IPCC, 2019) and on an exploratory study of a qualitative nature
outlined by bibliographic research based on technical reports and data from government
agencies, technical publications, scientific articles, theses and dissertations by specialists
in the area of the steel industry and sustainability in the steel industry. The results of this
work confirmed that the use of charcoal as a thermoreducer by the steel industry
contributes to the mitigation of the concentration of carbon dioxide in the atmosphere. It is
an important strategy for a low carbon economy, as long as it does not generate more
environmental damage and which are currently some of the biggest challenges in the
sector.