Study of the Application of Non-Plastic Clays from Poços De Caldas - MG

Maestrelli, Sylma Carvalho; Roveri, Carolina Del; Mariano, Neide Aparecida; Faustino, L. M.; Aielo, G. F.; Pinto, L. P. A.; Manochio, C.; Nunes, A. G. P.; Cal, T. M. L.; Ribeiro, F. F.

doi:10.4028/www.scientific.net/msf.727-728.1490

Cited by 4 publications

(6 citation statements)

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“…The values found were consistent with the literature showing higher densities for clays (0.9 to 1.7 g/cm³), lower for organic matter (0.9 to 1.3 g/cm³) and average when mixing both [23,24]. All samples showed a green density ≤1.6 g/cm 3 , indicating low plasticity [6,25]. After the first firing at 1000 ºC, all densities of the pieces increased, and the mixed formulations presented a significant difference compared to the pure samples.…”

Section: Resultssupporting

confidence: 90%

“…On the other hand, the turfous clay presented higher loss on ignition (44.73%), showing higher volatility, and so, greater alterations in the final product are expected in relation to the reference sample. The peat material presented lower Al 2 O 3 content (26.77%), indicating material with reduced refractory properties compared to the reference sample [6,17]. In this context, the decrease of organic matter (OM) of this turfous raw material could be an alternative for this to present features close to the reference.…”

Section: Methodsmentioning

confidence: 90%

“…Some potassic rocks of the region are in stages of more accentuated change, thus generating deposits of clay, explored by local industries. Characterization of raw materials of the region shows considerable amounts of organic matter, making the processing of this clay of little economic viability, leading to low use of them in the industrial sector [3][4][5][6]. The organic material present in this raw material is called peat.…”

Section: Introductionmentioning

confidence: 99%

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Ceramic characterization of raw material with a high content of organic matter reduced by composting

et al. 2019

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The process of beneficiation of a peaty ceramic raw material extracted from the Poços de Caldas region, MG, through the composting method to reduce organic matter (OM) was analyzed. The raw materials used in separate piles were divided, keeping one of the samples pure (TP) and adding bovine wastes in the second (TB). The process lasted 6 months and, at the end of each month, the amount of MO was analyzed by the Walkley-Black method. Results of maximum degradation of 56%±6% of OM in the TB and 47%±5% of OM in the TP were obtained. The ceramic characterization of the processed raw material was then carried out. It has been proved that the proposed method is efficient for the decrease of OM in the ceramic raw material. Regarding the composting product, the results were positive, showing that this material can be used in ceramic applications.

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Section: Resultssupporting

confidence: 90%

Section: Methodsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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Ceramic characterization of raw material with a high content of organic matter reduced by composting

et al. 2019

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“…Para minimizar estes efeitos indesejáveis é necessário conhecimento das características das matérias-primas e suas combinações [3]. No entanto, nos últimos anos tem crescido o interesse pelo conhecimento mais aprofundado das características das argilas [4][5][6][7].…”

Section: Introductionunclassified

Avaliação de novos depósitos de argilas do Estado da Paraíba visando sua aplicação como matérias-primas cerâmicas

et al. 2015

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ResumoNos últimos anos novos depósitos de argilas foram descobertos no Estado da Paraíba e a caracterização desses depósitos é de fundamental importância para estabelecer o seu melhor uso industrial. O presente trabalho teve como objetivo caracterizar argilas provenientes de jazidas do município de Cubati, PB, visando estabelecer seus usos adequados como matérias-primas cerâmicas. Para tanto, as matérias-primas foram submetidas às caracterizações física, química, mineralógica e térmica. INTRODUÇÃOOs materiais cerâmicos têm uma grande gama de aplicações, pois é usado desde o adobe, tipo de tijolo cru, até prótese dentária, isolante elétrico e revestimento de reatores nucleares. Entretanto, o uso mais visível dos materiais cerâmicos é na indústria da construção civil.A principal matéria-prima da indústria cerâmica é a argila, que é definida como um material natural, terroso, de granulação fina que quando umedecido com água apresenta plasticidade; quimicamente, são materiais formados essencialmente por silicatos hidratados de alumínio, ferro e magnésio, denominados argilominerais [1]. Por ser composta de combinações de diversos minerais, a argila pode ser classificada conforme a sua origem, composição química e concentração dos argilominerais. Foi reportado que existem cerca de quarenta variedades de argilominerais e as mais utilizadas nas indústrias cerâmicas são as cauliníticas, ilíticas, montmoriloníticas sendo acompanhada de minerais acessórios, tais como: sílica, mica, carbonatos, sulfatos e hematita [2]. As argilas naturais são relativamente abundantes; portanto, novas jazidas têm sido descobertas em várias partes do Brasil e, em particular, no estado da Paraíba. Além disso, apresentam baixo custo, que associado ao seu grande potencial de uso, atrai a atenção da indústria e da comunidade científica. Por outro lado, para uma utilização eficiente das argilas, principalmente dos novos depósitos, é salutar a realização de um controle de qualidade, que, em

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“…For Clay 1, the mineral composition is correlated with that of quartz clay, and hence, it is refractory due to the presence of a high amount of silica and a low percentage of loss on ignition (LOI) 33 . Another essential feature is the low occurrence of chromophore oxides such as iron and titanium (<1%), indicated by the white color of the clay after firing.…”

Section: Resultsmentioning

confidence: 99%

Characterization and use of clays from the Rio Bonito Formation/Paraná Basin for ceramic industry application

Comin

Zaccaron

Nandi

et al. 2021

Int J Applied Ceramic Tech

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Raw materials with different technological properties found in the same geological region can constitute a ceramic formulation upon proper mixing. This study aims to demonstrate the best way to develop a mixture using a mixture design method, emphasizing the geology of three clays in the Rio Bonito Formation/Paraná Basin. The mineralogical and chemical characteristics of these clays were investigated by X‐ray diffraction and X‐ray fluorescence, respectively, along with elementary (CNH), differential thermal and thermogravimetric analysis, and dilatometry. Ten formulations and their technological properties, including apparent density, shrinkage, water absorption, and mechanical resistance, were investigated. The results showed the potential of the studied mineral deposit clays for application in the ceramic industry in different materials. Clay 1 showed refractory characteristics, and Clay 3 was more plastic. The mixtures with higher contents of Clay 1 showed ideal for monoporosa tile recipes. The mixtures with higher contents of Clay 3 were ideal for porcelain tile pastes.

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Study of the Application of Non-Plastic Clays from Poços De Caldas - MG

Cited by 4 publications

References 1 publication

Ceramic characterization of raw material with a high content of organic matter reduced by composting

Ceramic characterization of raw material with a high content of organic matter reduced by composting

Avaliação de novos depósitos de argilas do Estado da Paraíba visando sua aplicação como matérias-primas cerâmicas

Characterization and use of clays from the Rio Bonito Formation/Paraná Basin for ceramic industry application

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