Recycling of Benefited Blast Furnace Sludge into Red Clay Ceramic

Vieira, Carlos Maurício Fontes; Monteiro, Sérgio Neves; Abreu, Mariana Miranda; Riter, Aline Vieira; Vernilli, Fernando; Cândido, Verônica Scarpini

doi:10.4028/www.scientific.net/msf.775-776.607

Cited by 3 publications

(5 citation statements)

References 4 publications

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“…Clay with these characteristics (silica aluminous, with high iron content and low content of fluxing oxides) observed in XRD demand high sintering temperature, as reported by Hildebrand et al [16] . As seen in the table, blast furnace sludge presents a high concentration of iron oxide (61.2%) and high content of loss on ignition (25.9%) when compared to clay, corroborating the information in Vieira et al [2] this value corresponds to the combustion of coke fines present in the sludge. Figures 1 and 2 show examples of bars and spheres molded with the mixture of clay and blast furnace sludge in amounts from 0% to 100% dried in an oven at 110°C.…”

Section: Characterization Of Materialssupporting

confidence: 77%

“…The presence of quartz in the XRD also confirms the result of XRF, which presented SiO 2 content of 5.11%. The coke fines present in blast furnace sludge were not identified in XRD, probably due to its amorphous character, a fact also observed by Vieira et al [2] . Atterberg limits of the materials are shown in Table 2.…”

Section: % 5%supporting

confidence: 50%

“…One of the wastes generated in this sector is the blast furnace sludge that comes from the wet cleaning of the blast furnace gases and the separation of solid particulates. Blast furnace sludge consists of iron oxides from iron ore and coke fines from the carbon [2,3] .…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Spheres and Bars Molded with Blast Furnace Sludge Incorporation in Clayey Mass

A¹,

Della-Sagrillo²,

Rol³

2016

Res. Rev. J Mat. Sci

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The incorporation of blast furnace sludge to clayey mass has been studied as a way to reduce the environmental impact of the improper disposal of this waste and to reduce the consumption of raw clayey material. We evaluated the behavior of the clayey mass used in the structural ceramic industry with the incorporation of blast furnace sludge in spheres manually molded and pressed bars. Samples of blast furnace sludge and clay were prepared and submitted to chemical, physical, mineralogical characterization and to thermal behavior analysis. Specimens with contents of blast furnace sludge from 5% to 100% were burned in an industrial furnace-type tunnel at a maximum temperature of 850°C for 24 hours in the pottery. The ceramic properties evaluated were water absorption, apparent porosity, apparent specific mass, flexural strength and compressive strength. The results indicated that the incorporation of 5% of blast furnace sludge in the clayey mass caused improvement in the ceramic properties analyzed of bars and spheres. We can confirm the use of the methodology of the spheres in potteries for initial analysis of ceramics raw materials.

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Section: Characterization Of Materialssupporting

confidence: 77%

Section: % 5%supporting

confidence: 50%

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Analysis of the Spheres and Bars Molded with Blast Furnace Sludge Incorporation in Clayey Mass

A¹,

Della-Sagrillo²,

Rol³

2016

Res. Rev. J Mat. Sci

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“…This PI value causes the clays to demand a greater amount of water in the conformation, which should require a longer drying time. However, it results in satisfactory dry mechanical strength due to the good cohesion between the clay minerals present in the highly plastic clay 18 . Regarding the plasticity limit (PL), in the case of kaolinite clays, the values found are within the range of 8.9% to 56.3% 2 .…”

Section: Resultsmentioning

confidence: 99%

Characterization and Evaluation of Ceramic Properties with Spherical and Prismatic Samples of Clay Used in Red Ceramics

et al. 2017

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The Brazilian red ceramic industry monthly consumes about 10.3 million tons of clay, its main raw material. In most potteries, characterization of the clay is made empirically, which can result in roof tiles and blocks not according to standards. In this sense, this paper aims to characterize clays used in the manufacturing of red ceramic products in a factory located in Colatina-ES, which appears as a ceramic pole with about twenty small and midsize industries. The clays were characterized by: X-ray fluorescence, X-ray diffraction, thermal analysis (DSC/TG), granulometry, Atterberg limits and content of organic matter. Specimens of clay and mixture containing four clays were shaped. Specimens were shaped, dried at 110°C, and burned at 850ºC in an industrial furnace-type tunnel for 24 hours. The ceramics and mechanical properties evaluated were: mechanic strength, water absorption, apparent porosity, apparent specific mass and shrinkage by drying and firing. The characterization showed that kaolinitic clay presents high plasticity, but high porosity. The mixture formed by the four clays does not meet the requirements of the Brazilian standard clays for red ceramic. It is possible to confirm the use of the methodology of the spheres in potteries for analysis of ceramics raw materials.

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“…Uma alternativa para tornar o setor mais sustentável ambientalmente é a incorporação de resíduos na massa argilosa, que resulta em diminuição do consumo de matéria-prima argilosa, destinação adequada para o resíduo e aumento da vida útil de aterros industriais. Aliados a isso, o processo de formação da argila interfere nas suas características [2], o que faz existir uma grande variedade de argilas com gama de cor, plasticidade e composição química diferentes [3], permitindo assim incorporar resíduos provenientes de diferentes processos industriais na composição da massa cerâmica [4]. Na própria indústria cerâmica são gerados resíduos no processo de fabricação dos principais produtos, telhas e blocos.…”

Section: Introductionunclassified

Caracterização De Resíduo De Massa Cerâmica Crua Para Aproveitamento Em Cerâmica Vermelha

Reis¹,

Della-Sagrillo²,

Valenzuela‐Díaz³

2018

ABM Proceedings

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ResumoA indústria de cerâmica vermelha brasileira consome 10,3 bilhões de toneladas de argila ao mês para produção de telhas e blocos. Uma alternativa para tornar o setor mais sustentável ambientalmente é a incorporação de resíduos na massa argilosa. Na própria olaria são gerados resíduos, tal como, o resíduo de massa cerâmica crua originado na etapa de conformação das peças. Este trabalho visa caracterizar o resíduo de massa cerâmica crua para incorporação na massa argilosa usada em cerâmica vermelha. O resíduo de massa cerâmica crua foi caracterizado através de ensaios de FRX, DRX, calorimetria exploratória diferencial e termogravimetria, limites de Atterberg e distribuição de tamanho de partículas. Corpos de prova foram conformados, secos à 110ºC e queimados à 900ºC em forno industrial e foram submetidos a ensaios de absorção de água, porosidade aparente, massa específica aparente e resistência à flexão. Os resultados evidenciam que as propriedades cerâmicas avaliadas nos corpos de prova atendem aos valores das argilas-padrão brasileiras para uso em cerâmica vermelha. Palavras-chave: Resíduo de massa cerâmica crua; Cerâmica vermelha; Caracterização; Resíduo. CHARACTERIZATION OF RAW CERAMIC MASS WASTE FOR USE IN STRUCTURAL CERAMIC AbstractThe Brazilian structural ceramic industry consumes 10.3 billion tons of clay per month for production of roof tiles and blocks. An alternative to make the sector more environmentally sustainable is the incorporation of waste in the clayey mass. Wastes, such as the raw ceramic mass waste originated in the pieces conformation stage, are generated in the pottery itself. This paper aims to characterize the raw ceramic mass waste for incorporation in the clayey mass used in structural ceramic. The raw ceramic mass waste was tested for XRF, XRD, differential scanning calorimetry and thermogravimetry, Atterberg limits and particle size distribution. Specimens were conformed, dried at 110°C and burned at 900°C in the industrial furnace and, after that, tested for water absorption, apparent porosity, apparent specific mass and flexural strength. The results show that the ceramic properties evaluated in the specimens meet the requirements of the Brazilian standard clays for structural ceramics.

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Recycling of Benefited Blast Furnace Sludge into Red Clay Ceramic

Cited by 3 publications

References 4 publications

Analysis of the Spheres and Bars Molded with Blast Furnace Sludge Incorporation in Clayey Mass

Analysis of the Spheres and Bars Molded with Blast Furnace Sludge Incorporation in Clayey Mass

Characterization and Evaluation of Ceramic Properties with Spherical and Prismatic Samples of Clay Used in Red Ceramics

Caracterização De Resíduo De Massa Cerâmica Crua Para Aproveitamento Em Cerâmica Vermelha

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