Characterisation of coal–charcoal composite biocoke as a sustainable alternative for ironmaking

Cardona, Lina Maria Varon; Narita, Cesar Yuji; Takano, Cyro; Mourão, Marcelo Breda

doi:10.1080/00084433.2017.1299342

Cited by 8 publications

(8 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Since it was previously found that with an increase in biomass addition, the reactivity of coke increases [ 30 ], this section considers the effect of 5 wt.% addition of biomass pellets as the optimal option for the possible use of biocoke in the BF.…”

Section: Resultsmentioning

confidence: 99%

“…Applying bio-based materials in metallurgical processes greatly impacts the total costs, energy consumption, operation stability, and, ultimately, final product quality. It is well known in the literature that biomass can be used in cokemaking [ 18 , 19 , 20 , 21 , 22 ], iron ore sintering [ 23 , 24 , 25 , 26 , 27 ], iron ore pellets production [ 28 , 29 ], and ironmaking [ 19 , 20 , 21 , 22 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Metallurgical Coke Production with Biomass Additives: Study of Biocoke Properties for Blast Furnace and Submerged Arc Furnace Purposes

et al. 2022

View full text Add to dashboard Cite

Biocoke has the potential to reduce the fossil-based materials in metallurgical processes, along with mitigating anthropogenic CO2- and greenhouse gas (GHG) emissions. Reducing those emissions is possible by using bio-based carbon, which is CO2-neutral, as a partial replacement of fossil carbon. In this paper, the effect of adding 5, 10, 15, 30, and 45 wt.% biomass pellets on the reactivity, the physicomechanical, and electrical properties of biocoke was established to assess the possibility of using it as a fuel and reducing agent for a blast furnace (BF) or as a carbon source in a submerged arc furnace (SAF). Biocoke was obtained under laboratory conditions at final coking temperatures of 950 or 1100 °C. Research results indicate that for BF purposes, 5 wt.% biomass additives are the maximum as the reactivity increases and the strength after reaction with CO2 decreases. On the other hand, biocoke’s physicomechanical and electrical properties, obtained at a carbonization temperature of 950 °C, can be considered a promising option for the SAF.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metallurgical Coke Production with Biomass Additives: Study of Biocoke Properties for Blast Furnace and Submerged Arc Furnace Purposes

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Furthermore, the carbonization of the biomass can be achieved using solar thermal energy. [24][25][26]…”

Section: Production Of Co and H By Water-splitting Thermochemical Cyc...mentioning

confidence: 99%

“…Due to the goal of processing sustainable carbonaceous materials that, in turn, meet requirements of F I G U R E 1 Schematic representation for the production of CO and hydrogen gases mechanical strength and reactivity, which are necessary characteristics for the proper processing. 24 Coleti et al 27 studied self-reducing briquettes originated from different biomasses from charcoal, palm oil charcoal, and eucalyptus bark charcoal, they concluded that for all carbon sources, a reduction reaction occurred during two stages (700 C-800 C and 850 C-950 C). In the first stage, a gasification of the char at a slower stage took place.…”

Section: Production Of Co and H By Water-splitting Thermochemical Cyc...mentioning

confidence: 99%

Experimental study of a two‐stage thermochemical cycle for hydrogen production

Cardona

Narita

Mourão

et al. 2021

Intl J of Energy Research

Self Cite

View full text Add to dashboard Cite

The use of renewable energy sources is the main strategy toward a low-carbon society. A promising alternative for the production of hydrogen gas is the water-splitting thermochemical cycles activated by solar energy. This work presents an experimental study of a two-stage thermochemical cycle for hydrogen production. It is based on the carbothermic reduction of iron ore (Fe 2 O 3 ) and the re-oxidation of it with steam can be powered by concentrated solar energy. Samples studied were self-reducing pellets. The first stage of the proposed cycle consists in the reduction of hematitic iron oxide into its own metal at temperatures above 1173 K. The second phase of the cycle consists of iron metal oxidation by steam, which produces hydrogen gas. Sponge iron samples obtained in this work had a specific surface area of 35.05 m 2 /g measured by the BET method, which is a high value compared to specific surface areas obtained from conventional processes. It was shown that at 973 K the hydrogen gas production rate is slower, whereas at 1073 K and at 1173 K the sample reached 63% of its maximum oxygen gain between 2 and 7.5 minutes, respectively. As the hydrogen gas production rate is also proportional to the iron oxidation rate, it was shown to be very important to balance out the hydrogen gas production over the entire cycle time as a function of temperature. Finally, the analyzed thermochemical cycle can also operate with any other renewable carbon source.

show abstract

“…Este trabalho pretende complementar estudos de carbonização da madeira realizados nos últimos anos [14][15][16][17][18][19], introduzindo outra fonte importante de biomassa, abundante em resíduos agrícolas e urbanos. Desta forma, o objetivo é apresentar um estudo comparativo da carbonização de madeira e de arroz, sendo este último o vegetal amiláceo escolhido.…”

Section: Introductionunclassified

Estudo Comparativo Da Carbonização De Madeira E Arroz

Moisés¹,

Oliveira²,

Takano³

et al. 2019

TMM

Self Cite

View full text Add to dashboard Cite

Publicado pela ABM. Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que o trabalho original seja corretamente citado. a Resumo O trabalho apresenta resultados obtidos em estudos sobre carbonização de madeira e de arroz, que são biomassas que podem ser usadas como fonte de energia e são encontradas em diversos tipos de resíduos ou podem ser colhidas especificamente para esse uso. Amostras de madeira de eucalipto e de arroz foram carbonizadas em laboratório nas mesmas condições, nas temperaturas de 400°C, 60°C e 1000°C. Os produtos obtidos foram caracterizados por microscopia eletrônica de varredura, difração de raios-X e dureza. Evidenciou-se microestruturas diferentes, sendo predominantemente celular para os carvões de madeira e globular para os carvões de arroz. A difração de raios-X mostrou que ambos os materiais carbonizados são majoritariamente amorfos. A dureza do carvão de arroz é maior que a do carvão vegetal de madeira; essa diferença foi atribuída à estrutura obtida. Palavras-chave: Biomassa; Carvão vegetal de madeira; Carvão vegetal de arroz.

show abstract

Characterisation of coal–charcoal composite biocoke as a sustainable alternative for ironmaking

Cited by 8 publications

References 6 publications

Metallurgical Coke Production with Biomass Additives: Study of Biocoke Properties for Blast Furnace and Submerged Arc Furnace Purposes

Metallurgical Coke Production with Biomass Additives: Study of Biocoke Properties for Blast Furnace and Submerged Arc Furnace Purposes

Experimental study of a two‐stage thermochemical cycle for hydrogen production

Estudo Comparativo Da Carbonização De Madeira E Arroz

Contact Info

Product

Resources

About