Kaolin And Clay
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Phase transformation of kaolinite to hexagonal kalsilite using K2CO3
Abstract Hydrothermal synthesis of kalsilite was facilitated by the inclusion of potassium carbonate (K2CO3) as the source of the potassium ion. After a 24 h reaction at 220 °C, kaolin clay treated with 1.25 M K2CO3 showed the most significant peaks at 2θ of 28.5° and 34.7° by X-ray diffraction corresponding to the hexagonal kalsilite. In addition, field
Cerâmica. Publicado em: 2022
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2. O pito (de) holandês: cachimbos arqueológicos de caulim do Recife e de Salvador
Resumo Os cachimbos europeus de caulim, produzidos especialmente entre os séculos XVII e XIX, eram industrializados e descartados rapidamente. Ainda, os estilos decorativos e de marcas de fabricante foram vários e relativamente bem marcados no tempo. Portanto, são particularmente úteis como instrumento de datação de sítios, camadas e feições, mesmo
Bol. Mus. Para. Emílio Goeldi. Ciênc. hum.. Publicado em: 02/12/2019
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3. Thermal behavior (TG-DTA-TMA), sintering and properties of a kaolinitic clay from Buenos Aires Province, Argentina
Resumo As propriedades tecnológicas de um caulim local, considerado um potencial material industrial, foram correlacionadas com o comportamento térmico e processos de sinterização realizados por meio de uma série de análises termoquímicas. A caracterização química e mineralógica do material foi realizada, juntamente com uma simples caracterizaçã
Cerâmica. Publicado em: 06/06/2019
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4. Dielectric and electrical properties of a mullite/glass composite from a kaolinite clay/mica-rich kaolin waste mixture
Resumo Um compósito mulita/fase vítrea foi preparado por sinterização reativa de uma mistura argila caulinítica/resíduo de caulim rico em mica com 25% em massa de resíduo. A composição de fase, microestrutura, propriedades dielétricas e elétricas do compósito sinterizado a 1400 °C foram avaliadas por difração de raios X, microscopia eletrônic
Cerâmica. Publicado em: 2019-01
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5. Evaluation of kaolin and bauxite from the Amazonian region addition on mechanical-, physical-, chemical properties and microstructural characterization of red ceramic industry clay of Manaus metropolitan region
ABSTRACT The present work investigated properties of red ceramic from the Amazonian region after the addition of kaolin and bauxite mixture with 0, 10, 20 and 30%wt. in red ceramic industry clay. Assessed mechanical properties were flexural strength and Young's modulus. The assessed physical properties were density and porosity. The microstructural images we
Matéria (Rio J.). Publicado em: 18/10/2018
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6. Ce/kaolin clay as an active catalyst for fatty acid methyl esters production from cottonseed oil in a new integrated apparatus
Abstract An efficient solid acid catalyst (Ce/Kaolin clay) was prepared and investigated for transesterification of cottonseed oil to fatty acid methyl esters (FAME). The catalysts were characterized by XRD, BET, and NH3-TPD measurements. A new integrated apparatus for extraction and transesterification of cottonseed oil was developed. The effects of cerium
Braz. J. Chem. Eng.. Publicado em: 2018-01
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7. Characterization of clay filled poly (butylene terephthalate) nanocomposites prepared by solution blending
Kaolin clay/poly (butylene terephthalate) (clay/PBT) composites films were prepared by solution casting technique. The scanning electron microscope (SEM) study showed that clay particles were well dispersed and embedded within the PBT matrix. The TGA thermograms showed that the thermal stability of PBT matrix was slightly improved by the incorporation of cla
Polímeros. Publicado em: 04/12/2015
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8. Síntese e caracterização de hidrogéis compósitos a partir de copolímeros acrilamida-acrilato e caulim: efeito da constituição de diferentes caulins do nordeste brasileiro
Superabsorbent hydrogels based on poly (acrylamide-co-acrylate) and different kaolins, were prepared by free-radical aqueous copolymerization. FTIR and WAXS techniques were employed for characterization of a series of hydrogels, obtained by varying the percentage of clay, crosslinking and constitution of kaolin. The water absorbency at equilibrium (Weq) decr
Quím. Nova. Publicado em: 2013
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9. Aspectos sócio-econômico-ambiental do processo de extração do caulim no município de Junco do Seridó-PB
The paper entitled "Socio-Economic and Environmental Process Extraction of Kaolin in the Municipality of Junco do Seridó/PB" is a guided study on the extraction of kaolin in the municipality of Junco do Seridó/PB, which is the largest production center of this mineral in the state Paraíba. This activity is the basis of an extensive and complex supply chai
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2011
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10. Análise experimental e numérica do escoamento multifásico gás-sólido em ciclones
Gas-solid are involved in various industrial processes, mainly by low power consumption for the transport of solid particles via drag a gas stream. In these cases the recovery of solid or purification of gases is promoted by cyclonic separation. Several studies on cyclones are presented in the literature from experimental studies by numerical simulation with
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2010
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11. Obtenção de uma porcelana dielétrica a partir de matérias-primas do Rio Grande do Norte
The dielectric porcelain is usually obtained by mixing various raw materials proportions and is used in the production of electronic equipment for various applications, from capacitors of high and low Power to insulators for low, medium, high and extra high voltage, which are used in distribution lines and transmission of electricity.This work was directed t
Publicado em: 2010
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12. Aproveitamento de resíduos de cinza da cana de açúcar em massas cerâmicas
This study aimed to investigate the use of cane sugar ashes from small-scale stills of Eunápolis region, state of Bahia, in pottery mass that can be developed as porcelain stoneware. Bahia is the second largest producer of rum distillery in Brazil. In the production of rum is produced residue called bagasse, which is used to generate electricity in Power pl
Publicado em: 2010