Evaluation of the Industrial Raw Material Used for Ceramic Production in São José de Ubá, State of Rio de Janeiro, Brazil

2015 ◽  
Vol 820 ◽  
pp. 3-7 ◽  
Author(s):  
Afonso Rangel Garcez de Azevedo ◽  
Jonas Alexandre ◽  
Rafael Picanço Oliveira ◽  
Rodolfo Cretton de Souza ◽  
Euzébio Barnabé Zanelato ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Rio De Janeiro ◽  
Raw Materials ◽  
Northern Region ◽  
Raw Material ◽  
Ceramic Production ◽  
Ceramic Processing ◽  
Know How ◽  
Technological Evaluation ◽  
Required Quality

The northern region of the state of Rio de Janeiro, Brazil, has a significant participation in the country ceramic production for civil construction owing to the abundance of raw materials, mainly kaolinitic clays. Each municipality in that region has ceramic industries using raw materials mined from its own deposits. Products such as bricks and tiles may lack the required quality due to the limited know-how on the applied raw material. The present work conducted a technological evaluation of the clayey raw material used in the municipality of São José de Ubá including its potential for ceramic processing at firing temperatures of 700, 850 and 950oC. The results indicated that only the ceramic fired at 950oC conforms to the specifications for water absorption and mechanical strength.

Serpentinite Magnesium Binders, Based on Technogenic Raw Materials

2021 ◽  
Vol 316 ◽  
pp. 1050-1054
Author(s):  
V.N. Zyryanova ◽  
E.V. Lytkina ◽  
A.P. Ochur-Ool
Keyword(s):  
Mechanical Strength ◽  
Water Resistance ◽  
Raw Materials ◽  
Raw Material ◽  
Material Base ◽  
Hardening Process ◽  
Dispersed System ◽  
Technogenic Raw Materials

Increasing water resistance and mechanical strength of hardening magnesian binders’ products can be achieved by introducing microfillings into a hardening dispersed system. It is shown that serpentine provides an increase strength and water resistance in hydration and hardening process, being as a structure-forming component, it intensifies this process. It allows expanding the raw material base for the production of magnesia binders for construction purposes.

Influence of the Granite Waste into a Clayey Ceramic Body for Rustic Wall Tiles

2012 ◽  
Vol 727-728 ◽  
pp. 1057-1062 ◽  
Author(s):  
Monica Castoldi Borlini Gadioli ◽  
Mariane Costalonga de Aguiar ◽  
Abiliane de Andrade Pazeto ◽  
Sérgio Neves Monteiro ◽  
Carlos Maurício Fontes Vieira
Keyword(s):  
Mechanical Strength ◽  
Water Absorption ◽  
Raw Materials ◽  
Rupture Strength ◽  
Ceramic Body ◽  
Linear Shrinkage ◽  
Ceramic Production ◽  
Ornamental Stones ◽  
Error Bar ◽  
Press Molding

This work has as its objective to evaluate the influence of a granite waste into a clayey ceramic body for obtaining of rustic wall tiles. As raw materials, a clayey ceramic body for red ceramic production and a granite waste, resulting from ornamental stones cutting with the multi-wire technology were used. Compositions using 0, 10, 20 and 30% of waste incorporated into ceramic body were prepared. Specimens were fabricated by uniaxial press-molding at 20 MPa and sintered at 1050°C. The following properties were determined: linear shrinkage, water absorption and flexural rupture strength. In general, within the error bar, there was no influence of the waste in the values of water absorption of the clayey ceramic body. The results showed that all investigated formulations used in this work for the production of rustic wall tiles attend the standards for water absorption and mechanical strength.

scholarly journals Malgorzata Daszkiewicz, O. Munteanu, V. Iarmulschi, Pottery found at the Butuceni and Orheiul Vechi Iron Age settlements – results of archaeoceramological analysis

2019 ◽  
Vol 7 (2) ◽  
pp. 190-225
Keyword(s):  
Chemical Analysis ◽  
Thin Section ◽  
Iron Age ◽  
Raw Materials ◽  
Laboratory Analysis ◽  
Raw Material ◽  
Local Production ◽  
Know How ◽  
Pottery Technology ◽  
Two Factors

The aim of laboratory analysis carried out on pottery fragments recovered from the Poienești-Lucaşeuca (PL) site of Orheiul Vechi and the Getic site of Butuceni was to verify the hypothesis that there was a continuity in pottery technology traditions and the hypothesis that there was continuity in raw material use. In order to verify these hypotheses, i.e. to determine whether we are dealing with continuity or with changes in pottery manufacturing, two factors must be taken into account: know-how and raw material. This means that it is necessary to perform both technological and raw material analyses. For the purposes of this study the following methods were used: MGR-analysis, chemical analysis by WD-XRF, thin-section studies and an estimation of physical ceramic properties. The results of archaeometric analysis of pottery from the PL site of Orheiul Vechi and the Getic site of Butuceni did not substantiate the hypothesis that there had been a continuity in pottery technology traditions. The results of archaeometric analysis of pottery from the PL site of Orheiul Vechi and the Getic site of Butuceni did, conversely, confirm the hypothesis that there was a continuity in raw material use. At both sites and in both phases there is a marked emphasis on local production of ceramics using locally sourced raw materials.

scholarly journals On the Hibernating Electronic Waste in Rio de Janeiro Higher Education Community: An Assessment of Population Behavior Analysis and Economic Potential

2021 ◽  
Vol 13 (16) ◽  
pp. 9181
Author(s):  
Felipe Seabra D’Almeida ◽  
Roberto Bentes de Carvalho ◽  
Felipe Sombra dos Santos ◽  
Rodrigo Fernandes Magalhães de Souza
Keyword(s):  
Higher Education ◽  
Rio De Janeiro ◽  
Raw Materials ◽  
Electronic Waste ◽  
Raw Material ◽  
Industrial Plant ◽  
Economic Potential ◽  
Education Community ◽  
Gold Silver ◽  
Copper Gold

Brazil is the second largest producer of electronic waste in the Americas, with a production that grows each year and only 10% of it being treated in its own way. Additionally, given the typical chemical composition of this type of residue, it can be possible to recover valuable metals, such as copper, gold, silver, and platinum. Presently, Brazil does not have an industrial plant devoted to such extractive activity using electronic waste, with most of its treatment carried out abroad. The research hypothesis of this manuscript is that universities and their communities could develop sources of raw materials for such extraction processes and, therefore, deserve attention for the creation of collection points and partnerships. In this context, there is a need to understand this community behavior regarding the acquisition, storage, and disposal of electronic equipment, as well as information about topics related to electronic waste management and recycling. To implement such a study for the higher education community in Rio de Janeiro, a form was created covering several topics on the subject, which was disseminated among the teachers, students, employees, and family members of two main state universities. It was determined that the studied group has more than 16.96 million mobile phones in hibernation, in addition to other equipment, with an estimated stockpile value of USD 67.45 million for the studied group in the metropolitan area of Rio de Janeiro. If extrapolated to all of Brazil, this could be as high as USD 797.50 million for the studied group. This information will be used in future projects to assess the economic potential of an industrial plant dedicated to metal recovery in Brazil. However, the present study also identified an important lack of knowledge regarding proper waste disposal and solid waste policies among this well-educated group. It became clear that without appropriate information regarding collection points and knowledge on how to deal with obsolete devices, the access to this source of raw material could be a hinderance to future extraction projects in the area.

scholarly journals Variation of boza nutrition parameters based on raw materials

2016 ◽  
pp. 67-70
Author(s):  
Anna Novák ◽  
Béla Kovács ◽  
Nikolett Czipa
Keyword(s):  
Mineral Content ◽  
Raw Materials ◽  
Sugar Content ◽  
Antioxidant Properties ◽  
Raw Material ◽  
Element Content ◽  
Know How ◽  
Nutrition Value ◽  
Macro Element

Boza is a ceral based fermented drink. Raw material of boza could be rise, millet, wheat and rye. Because of the diversity of raw materilas and the method of fermentation boza might show varied quality and nutrition value. Nowadays healthy and conscious nutrition are playing more and more important roles in our lives. People pay an ever growing attention to the nutrition value of products, such as protein- and sugar content, components with antioxidant properties, and the mineral content of the products. In our research we wanted to know how the protein,-, sugar-, total polifenol-, mikro- and macro element content of products change.

A Ceramic Compositional Perspective on the Formative to Classic Transition in Southern Mesoamerica

1994 ◽  
Vol 5 (4) ◽  
pp. 333-358 ◽  
Author(s):  
Hector Neff ◽  
Frederick J. Bove ◽  
Eugenia J. Robinson ◽  
Barbara Arroyo L.
Keyword(s):  
Neutron Activation Analysis ◽  
Raw Materials ◽  
Regional Distribution ◽  
Analysis Data ◽  
Formative Period ◽  
Classic Period ◽  
Raw Material ◽  
Ceramic Production ◽  
Production And Consumption ◽  
Pacific Slope

We use neutron-activation analysis data on Formative- and Classic-period pottery along with analyses of modern ceramics and raw materials to examine changes in ceramic production and consumption on the central Guatemalan Pacific slope at the beginning of the Classic period. In particular, we wonder if the processes that generated regional distributions of two Formative-period wares (White Paste and Fine Red) were the same as or different from the processes that generated regional distribution of Classic-period Flesh ware. We identify probable production zones for the three regionally distributed wares based on raw-material analyses, consideration of the geological context of different zones, and distributional evidence. We find major differences between production/consumption of the Formative and Classic regionally distributed wares. This reinforces the notion that some kind of dramatic historical discontinuity affected the lives of Pacific-slope people around A. D. 200.

scholarly journals Potential use of Kebilian clay reserves (southern Tunisia) for the production of geopolymer materials

Clay Minerals ◽  
2020 ◽  
Vol 55 (2) ◽  
pp. 101-111
Author(s):  
Chedlia Ounissi ◽  
Salah Mahmoudi ◽  
Luca Valentini ◽  
Ali Bennour ◽  
Enrico Garbin ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Mechanical Performance ◽  
Raw Materials ◽  
Low Cost ◽  
Raw Material ◽  
X Ray Diffraction ◽  
Southern Tunisia ◽  
Clay Deposits ◽  
Geotechnical Tests ◽  
Selection Of

AbstractThe aim of this study was to help drive the Tunisian construction industry towards a more sustainable approach given the existence of abundant local raw material deposits that could be exploited for the production of low-CO2 binders. Various clay sediments from the Kebili region (southern Tunisia) were characterized by chemical analysis, X-ray diffraction, thermal analysis and geotechnical tests to determine their suitability for the preparation of geopolymer binders. The clays consist of illite and kaolinite with other accessory minerals. To test the possibility of using these materials as precursors for the production of low-CO2 and low-cost geopolymers, the raw samples were calcined and activated by addition of solid sodium silicate. Compressive strength tests performed on four alkali-activated clays show that promising mechanical performance may be achieved, with mechanical strength values as high as 25 MPa after 7 days, depending on the clay composition. The mechanical strength is related to the SiO2:Al2O3 and Al2O3:(NaO2 + K2O) ratios. Careful selection of the raw materials is, therefore, an essential step in the exploitation of clay deposits to be used for the production of ecological materials such as geopolymers.

scholarly journals Analysis on Standardization of Building Ceramic Raw Material Based on Manufacturability

2020 ◽  
Vol 185 ◽  
pp. 02032
Author(s):  
Hubin Bai ◽  
Ming Gong ◽  
Kaifang Wang
Keyword(s):  
Production Process ◽  
Ceramic Industry ◽  
Raw Materials ◽  
Raw Material ◽  
Ceramic Production ◽  
Utilization Rate ◽  
Environmental Damage ◽  
Building Ceramic ◽  
Mineral Raw Materials

Building ceramic consume a lot of mineral raw materials. The standardization of raw materials is the trend of ceramic industry. This paper analyzes the manufacturability of clay, quartz and feldspar, and their function in the ceramic production process, aims to provide some thoughts for the realization of raw material standardization, promotes the standardization of raw materials forward, improves the utilization rate of mineral raw materials and reduces environmental damage.

scholarly journals YOUNG WOOD OF SPRUCE AND BIRCH – COMPLETE RAW MATERIAL FOR PULP AND PAPER INDUSTRY

2018 ◽  
pp. 261-270
Author(s):  
Фирдавес (Firdaves) Харисовна (Kharisovna) Хакимова (Khakimova) ◽  
Роман (Roman) Рашидович (Rashidovich) Хакимов (Khakimov) ◽  
Ольга (Ol'ga) Алексеевна (Аlekseevna) Носкова (Noskova)
Keyword(s):  
Environmental Management ◽  
Mechanical Strength ◽  
Raw Materials ◽  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Raw Material ◽  
Birch Wood ◽  
Research Results ◽  
Cooking Liquor

The work is devoted to increase in complexity of use of wood raw materials – one of the most important directions in solution to complying with the modern requirements of rational environmental management and environmental protection.Features of impregnation by bisulfite sulfite cooking acid and regularities of bisulfite delignification of young and ripe fir-tree and birch wood have been investigated. It is shown that young thin wood of both breeds becomes impregnated by bisulfite sulfite cooking acid much quicker, than ripe. The nature of delignification processes for young and ripe wood are identical, however intensity of processes is much lower for young wood.It has been established that cellulose derived from young wood is ground easier and has higher mechanical strength rates than from ripe. However cellulose from young wood is dehydrated slightly more difficultly and has the increased water-retaining what is connected with differences in sizes and properties of fibers of young and ripe wood.Cellulose yields of young and ripe wood differ insignificantly. Cellulose from young birch wood characterized by a somehow lowered owing due to the higher content of knots of this wood.Young wood is dignified by bisulfite cooking liquor without difficulties, but slightly more slowly in comparison with the corresponding ripe wood breed. The research results showed that the young (thin) fir-tree and birch wood of which is formed at cleaning cutting is the considerable reserve stock of wood raw materials which can be successfully utilized fibrous semi-finished products production, in particular in bisulfite cellulose.

Evaluation of Phyllite and Sand in the Heavy Clay Body Composition

2018 ◽  
Vol 912 ◽  
pp. 55-59
Author(s):  
Lucas Fonseca Amaral ◽  
Carlos Maurício Fontes Vieira ◽  
G.C.G. Delaqua ◽  
M. Nicolite
Keyword(s):  
Mechanical Strength ◽  
Water Absorption ◽  
Apparent Density ◽  
Raw Materials ◽  
Linear Shrinkage ◽  
Raw Material ◽  
Oxide Content ◽  
Quartz Content ◽  
Kaolinite Clay ◽  
Three Point Bend Test

In this study the objective was to evaluate the properties affected by the incorporation of phyllite and sand as raw materials in the composition of ceramic material for the roofing tiles production with light color using kaolinite clay from Campos dos Goytacazes – RJ, Brazil as main raw material. Specimens were prepared by uniaxial pressing at 20 MPa and fired at 950oC. The determined technological properties were: dry apparent density, linear shrinkage, water absorption and mechanical strength (three point bend test). The results indicated that the incorporation of sand and phyllite improved the dry apparent density, reduced loss on ignition and aluminum oxide content of the pure clay. These factors resulted in a reduced open porosity, improving water absorption and linear shrinkage. However, the mechanical strength was compromised due to the increase of quartz content.

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