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Publikācija: Application of Chemical Trated Illite Clay for Development of Ceramics Products

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Application of Chemical Trated Illite Clay for Development of Ceramics Products
Field of research 2. Engineering and technology
Sub-field of research 2.4 Chemical engineering
Authors Gaida Maruta Sedmale
Artūrs Korovkins
Valdis Segliņš
Lauma Lindiņa
Keywords Chemical treatment, illite clay
Abstract The chemically treatment by alkali solutions of illite clay, so-called geopolymer method, were studied to show the impact on changes of structure and crystalline phases composition of treated not dehydroxylatedilliteQuarternaryclay, as well as ceramic properties and compressive strength of sintered respective ceramic samples. The degree of activating process were followed by FTIR-spectra, X-ray diffraction and differencial thermal analysis. The low temperature ceramic product was achieved by sintering of alkali solution (KOH or NaOH 1M, 3M, 4M and 6M) activated clay samples in temperature range from 1000C to 7000C . Sintered ceramic samples were characterized by compressive strength, total porosity, bulk density and shrinkage. It is shown that treatment of the illiteQuarternary clay by KOH changes illite structure, but not destroyed.Main changes could be connected with changes of O-Al-OH grouping where O is associated with neighbour Si- layer That results into lowering of sintering temperature and development of amorphous (glassy) phase of sintered at 600-700 0C ceramic samples together with growing of total porosity. Consolidated at 6000Cceramic samples have the compressive strength ranged from16-23 N.mm2. These values increases with growing of concentration of used alkali solution as well as with temperature for NaOH treated samples and is comparable with compressive strength for the respective ceramic products sintered at 900 oC.
DOI: 10.1088/1757-899X/47/1/012056
Hyperlink: http://iopscience.iop.org/1757-899X/47/1/012056 
Reference Sedmale, G., Korovkins, A., Segliņš, V., Lindiņa, L. Application of Chemical Trated Illite Clay for Development of Ceramics Products. IOP Conference Series: Materials Science and Engineering, 2013, Vol.47, Iss.1, pp.012056-012056. ISSN 1757-8981. e-ISSN 1757-899X. Available from: doi:10.1088/1757-899X/47/1/012056
Additional information Citation count:
ID 17634