A Preliminary Scientific Study of Traditional Korean Celadons and their Modern Developments

1992 ◽  
Vol 267 ◽  
Author(s):  
C.K. Koh Choo
Keyword(s):  
Raw Materials ◽  
Mineralogical Composition ◽  
Scientific Study ◽  
Microstructural Characteristics ◽  
Chemical And Mineralogical Composition ◽  
Materials Used

ABSTRACTIn studying celadons culture of Korea scientifically 81 sherds from nine different kiln sites of different periods are analyzed for their macroscopic, compositional and microstructural characteristics. The raw materials used for modern reproduction are analyzed for their chemical and mineralogical composition and compared with those of traditional pieces.

Characterization of clays from the Foumban region (west Cameroon) and evaluation for refractory brick manufacture

Clay Minerals ◽  
2018 ◽  
Vol 53 (3) ◽  
pp. 447-457
Author(s):  
A. Pountouenchi ◽  
D. Njoya ◽  
A. Njoya ◽  
D. Rabibisao ◽  
J.R. Mache ◽  
...  
Keyword(s):  
Material Properties ◽  
Major Element ◽  
Raw Materials ◽  
Mineralogical Composition ◽  
Refractory Brick ◽  
Major Element Chemistry ◽  
End Products ◽  
Materials Used ◽  
Steel Mould

ABSTRACTThree clayey materials named MY3, KK and KG originating from the Foumban region (west Cameroon) were analysed to determine their granulometry, plasticity, major-element chemistry and mineralogy. Dilatometric and ceramic behaviour were also investigated. Clays were shaped by uniaxial pressing in a steel mould. Shaped samples were heated at 1300, 1400 and 1500°C. The end products were characterized in terms of their density, porosity and compressive strength. Raw materials differ in terms of their mineralogical composition, grain-size distribution, Al2O3 content and the nature and abundance of impurities inducing specific thermal behaviour during dilatometric analysis and sintering tests. The final material properties may be related to the main features of the raw materials used.

scholarly journals Powder diffraction of yellow and red natural earths from Lessini Mountains in NE Italy

2015 ◽  
Vol 30 (2) ◽  
pp. 122-129 ◽  
Author(s):  
Giovanni Cavallo ◽  
Maria Pia Riccardi ◽  
Roberto Zorzin
Keyword(s):  
Powder Diffraction ◽  
Raw Materials ◽  
Mineralogical Composition ◽  
Degree Of Crystallinity ◽  
Ne Italy ◽  
Mineral Phases ◽  
Mineral Assemblages ◽  
Parent Rocks ◽  
Materials Used ◽  
The Degree Of Crystallinity

A first attempt to differentiate goethite- and hematite-based natural materials, used for several purposes during the Late Palaeolithic in the Lessini Mountains (Italy), is here proposed. All raw materials were collected from known geological sites within a distance of about 20 km from archaeological excavations (Tagliente and Fumane caves) where ochre fragments were found. X-ray powder diffraction allowed the mineralogical composition of samples collected from carbonate and volcanic geological host and parent rocks to be inferred; in addition, a preliminary distinction based on the different mineral assemblages, on the presence of distinctive mineral phases and on the degree of crystallinity of some compounds such as hematite, became possible. The acquired data thus represent a sort of preliminary inventory for provenance studies on archaeological samples originating in the same region, for which ancillary micro-analytical and geochemical techniques are planned.

scholarly journals Microscopic Analysis of Pottery Fragments from the Corded Ware Culture at Sites 11, 15 and 20 in Święte, Jarosław District

2018 ◽  
Vol 23 (1) ◽  
pp. 163-177 ◽  
Author(s):  
Anna Rauba-Bukowska
Keyword(s):  
Raw Materials ◽  
Microscopic Analysis ◽  
Mineralogical Composition ◽  
Crystalline Material ◽  
Petrographic Analysis ◽  
Type B ◽  
Preparation Methods ◽  
Heavy Clay ◽  
Materials Used ◽  
Natural Component

Abstract For microscopic examination, 22 pottery fragments from sites 11, 15 and 20 in Święte, Jarosław District were selected. The pottery types included beakers (N=19) and amphorae (N=3). The goal of the petrographic analysis was to identify mineralogical composition of ceramic fabric, sources of raw materials, and intentional additives to the clay. The analysis yielded data that helped determine ceramic fabrics types and preparation methods, as well as pottery firing conditions and approximate firing temperature. In all samples analysed, ceramic fabrics were prepared in a similar way, using heavy clay poor in muscovite, with grog deliberately added. Crystalline material present in some of the samples is most likely a natural component of raw materials used in the production process. No sand is added to the clay. No other method for preparing pastes was identified for the amphorae type. Previous observations on amphorae firing are confirmed: amphorae are fired in oxidizing conditions. The ceramic fabrics of two vessels have a deliberate admixture of bones in addition to grog and argillaceous rock intraclasts. Vessels decorated with cord impressions and vessels with herringbone or other incised patterns are more often made from paste type A (inclusion and grog) and paste type B (grog), respectively.

scholarly journals The use of natural clay-carbonate gypsum in the production of sulfate-containing cements

2020 ◽  
Vol 5 (4) ◽  
pp. 346-355
Author(s):  
Bubuzuura T. Assakunova ◽  
◽  
Bakytbek B. Barpiev ◽  
Beishenbek S. Ordobaev ◽  
Zhazgul Amanzhan-kyzy ◽  
...  
Keyword(s):  
Raw Materials ◽  
Mineralogical Composition ◽  
Environmental Safety ◽  
Decomposition Temperature ◽  
Local Clay ◽  
Gypsum Rock ◽  
Chemical And Mineralogical Composition ◽  
Save Energy ◽  
A Charge ◽  
Ray Methods

The purpose of the article is to study the raw materials located in the deposits of Kyrgyzstan and used in the production of sulfate-containing cements. The article aims to identify features of the technological process of clinker formation. An analysis of deposits of gypsum raw materials in Kyrgyzstan was carried out. For the most common raw materials of limestones, their chemical and mineralogical composition was studied using the chemical, derivatographic and X-ray methods. By calculating raw mixtures, a charge was produced for obtaining sulfate-containing cement from limestone of the Tashkumyr deposit, local loams and clay-carbonate gypsum. The temperature regime of the clinker formation of sulfate-containing cements using local clay-carbonate gypsum awas studied. The article analyzes an effect of high temperatures on clay-carbonate gypsum whose chemical and mineralogical composition decreases the decarbonization temperature and causes the partial decomposition of CaSO4 and the early formation of primary clinker minerals. The use of gypsum rock with a high content of carbonates and clay impurities as a sulfate component in the preparation of sulfoclinkers helps to reduce the decomposition temperature of calcium carbonate and sulfate during burning. The data on the intensification of clinker formation are presented. They depend on the composition of charge components and the burning temperature, which correspond to the low-power technology. The technology can save energy, reduce CO2 emissions and improve the environmental safety.

scholarly journals NEOLITHIC POTTERY PRODUCTION IN SOUTHEAST THESSALY THROUGH THE APPLICATION OF PETROGRAPHY AND MINERALOGY

2019 ◽  
Vol 54 (1) ◽  
pp. 1
Author(s):  
Areti Pentedeka ◽  
Petros Koutsovitis ◽  
Andreas Magganas ◽  
Annie Rassios
Keyword(s):  
Raw Materials ◽  
Mineralogical Composition ◽  
Raw Material ◽  
Rock Fragment ◽  
Adjacent Area ◽  
Pottery Production ◽  
Sediment Samples ◽  
Material Sources ◽  
Materials Used ◽  
Neolithic Pottery

The present paper focuses on the raw materials used for the local manufacture of pottery at two Neolithic settlements (Magoula Visviki, Magoula Agrokipiou) in the Velestino region, SE Thessaly, an area characterized by a distinctive ophiolithic sequence and its sedimentary weathering products. The mineralogical composition and rock fragment constituents of pottery fabrics are compared with that of rock and sediment samples from the adjacent area, thus locating the ancient raw material sources that were exploited.

scholarly journals The framing of the raw materials used for manufacturing some rough ceramic materials into polinary oxide systems

2013 ◽  
Vol 24 (2) ◽  
pp. 131-137
Author(s):  
Anna-Maria Szöke
Keyword(s):  
Optimal Design ◽  
Raw Materials ◽  
Mineralogical Composition ◽  
Ceramic Materials ◽  
Oxide Systems ◽  
Oxide Composition ◽  
Materials Used ◽  
Experimental Researches

AbstractIn this paper it is presented the framing into polinary oxide systems in the case of optimal design of the oxide composition for obtaining raw ceramic materials. These calculations were carried out on two raw materials, which were the base of the experimental researches, for finding out the potential mineralogical composition. It was also followed, for the two raw materials, the framing options of the composition in oxide systems and the assessment of their belongings to possible subsystems.

Chemical and Mineralogical Composition Influence of Steelworks Dust on Agglomerate Quality

2017 ◽  
Vol 1143 ◽  
pp. 120-126
Author(s):  
Vasilica Viorica Corcoţoi Toniţă ◽  
Maria Vlad ◽  
Ilenuta Severin ◽  
Andrei Berbecaru
Keyword(s):  
Experimental Research ◽  
Raw Materials ◽  
Mineralogical Composition ◽  
Raw Material ◽  
Sintering Process ◽  
Mineralogical Analysis ◽  
Secondary Raw Material ◽  
Chemical And Mineralogical Composition

From making steel process result dust and slurry that can be used as a secondary raw material in the composition stack of ferrous materials for the sintering process. Together with other raw materials rich in Fe, SiO2, CaO, this waste can be significant on quality ferrous agglomerate due to the useful elements contained.The paper presents the results of chemical and mineralogical analysis of steelworks dust and experimental research with a view to introduce dust in the sintering process to increase the quality of agglomerate.

scholarly journals THE POSSIBILITY OF USING CLAYS OF THE SAZDINSKY DEPOSIT IN THE PRODUCTION OF CERAMIC BRICK

2020 ◽  
Vol 5 (8) ◽  
pp. 87-95
Author(s):  
N. Shakurova ◽  
E. Doroganov ◽  
V. Bedina ◽  
Yu. Trepalina ◽  
O. Dobrinskaya ◽  
...  
Keyword(s):  
Phase Composition ◽  
High Efficiency ◽  
Raw Materials ◽  
Mineralogical Composition ◽  
Ceramic Materials ◽  
Raw Material ◽  
Material Base ◽  
Clay Deposits ◽  
Different Temperatures ◽  
Chemical And Mineralogical Composition

Ceramic bricks is one of the most popular architectural finishing and structural materials. It has high efficiency and decorative properties. Expanding the raw material base of clay deposits in the production of ceramic bricks is an urgent task. In order to assess the possibility of using clays from the Sazdinsky Deposit (Aktobe region) in the production of ceramic bricks. Studies are conducted on four sections of clays from this deposit. The chemical and mineralogical composition of clays is studied, and the rational composition of raw materials is calculated. It is revealed that the studied clays have a polymineral composition, the main rock-forming minerals are kaolinite, illite and montmorillonite. According to the classification of A. I. Augustinik, the technological purposes of the studied clays are evaluated. The phase composition of samples heat-treated at different temperatures is studied. Based on the data of chemical and mineralogical composition of raw materials, technological properties of clays, physical-mechanical and operational indicators, it is established that the clays of three sites are suitable for the production of ceramic bricks by plastic molding. Phase composition of the obtained ceramic materials based on clays of four sites at a firing temperature of 1050 ° C are represented by quartz, hematite, anorthite, mullite, hematite and cristobalite. The strength of the fired samples of all clays corresponds to the brand 150-200. It is found that a more frost-resistant brick is obtained from the clays of the second section.

scholarly journals Computer calculation of the mineralogical composition of raw materials

2020 ◽  
pp. 21-25
Author(s):  
L.P. Chernyak ◽  
A. Soroka
Keyword(s):  
Computer Program ◽  
Building Materials ◽  
Raw Materials ◽  
Computer Calculation ◽  
Mineralogical Composition ◽  
Chemical Technology ◽  
Charge Composition ◽  
Technological Parameters ◽  
Quantitative Content ◽  
Materials Used

The possibility of making of mineral astringent material of the low temperature «Mineral» computer program to determine the quantitative content of rock-forming minerals of silicate raw materials as factor in structure formation in technological processes of production and to achieve the specified properties of materials and products are shown. The results of calculations of the mineralogical composition of carbonate and clay raw materials are presented. Varieties of raw materials used in the chemical technology of silicates are a set of certain rock-forming minerals of known chemical composition. Determination of the quantitative content of rock-forming minerals of raw materials is possible by calculations based on the initial data of chemical and qualitative mineralogical compositions. The creation of a mathematical apparatus for processing the results of research and computer technology has increased the efficiency and efficiency of determining the quantitative content of rock-forming minerals. However, the constant increase in the number of varieties of potential raw materials makes it appropriate to improve the method of determining the quantitative mineralogical composition using computer calculations and modern software, in the direction of which the work is performed. Determining the quantitative mineralogical composition of raw materials using the computer program "Mineral" is appropriate to optimize the charge composition of masses and technological parameters of silicate production, including ceramics, glass and binders. The created program "Mineral" should be used by specialists of the building materials industry, production, research and design organizations working in the field of chemical technology of silicates, teachers and students of higher educational institutions.

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