Exothermic assisted synthesis of mullite and spinel based ceramics

Research output: Contribution to conferenceConference articleScientific

Abstract

Typically synthesis of oxide ceramics requires high temperatures and long heat treatment times consuming a lot of energy which increases the cost of products and the environmental burden. In order to produce more economical and more environmental friendly oxide ceramics low-energy intensity processes are sought for. The potential of mine tailings as a secondary raw material source has been acknowledged widely. Compositions of mine tailings vary, including typically SiO2, MgO, Al2O3 and CaO as the main components. Presented study is a part of the research aiming to utilize selected mine tailings based minerals in production of porous ceramics by low energy intensity processes. In this part of the study the exothermic reaction assisted synthesis of oxide ceramics are studied and compared to the basic sintering bonding. The goal is to examine exothermically reactive raw materials (e.g. aluminium powder) for less energy intensity synthesis of mullite and spinel based ceramics. Thermodynamic calculations and evaluations are presented for selected mixtures. The thermal behaviour of raw materials and thermal evolution of mixtures was studied by using thermogravimetry (TGA) giving a simultaneous Differential Scanning Calorimetry signal (DSC). Phase structure evolution was analysed by an X-ray diffractometry (XRD) and morphology of raw materials and final products were analysed by scanning electron microscope (SEM).
Original languageEnglish
Publication statusPublished - 2016
Event6th International Congress on Ceramics, ICC6 - Dresden, Germany
Duration: 21 Aug 201625 Aug 2016

Conference

Conference6th International Congress on Ceramics, ICC6
Abbreviated titleICC6
CountryGermany
CityDresden
Period21/08/1625/08/16

Fingerprint

porcellanite
ceramics
spinel
tailings
oxide
energy
thermogravimetry
thermal evolution
calorimetry
aluminum
thermodynamics
electron
raw material
mineral
cost

Keywords

  • low energy intensity processing
  • exothermic
  • mullite based ceramics

Cite this

Karhu, M., Lagerbom, J., & Kivikytö-Reponen, P. (2016). Exothermic assisted synthesis of mullite and spinel based ceramics. Paper presented at 6th International Congress on Ceramics, ICC6, Dresden, Germany.
Karhu, Marjaana ; Lagerbom, Juha ; Kivikytö-Reponen, Päivi. / Exothermic assisted synthesis of mullite and spinel based ceramics. Paper presented at 6th International Congress on Ceramics, ICC6, Dresden, Germany.
@conference{1b997b46b99247cc8198ba8568baab0b,
title = "Exothermic assisted synthesis of mullite and spinel based ceramics",
abstract = "Typically synthesis of oxide ceramics requires high temperatures and long heat treatment times consuming a lot of energy which increases the cost of products and the environmental burden. In order to produce more economical and more environmental friendly oxide ceramics low-energy intensity processes are sought for. The potential of mine tailings as a secondary raw material source has been acknowledged widely. Compositions of mine tailings vary, including typically SiO2, MgO, Al2O3 and CaO as the main components. Presented study is a part of the research aiming to utilize selected mine tailings based minerals in production of porous ceramics by low energy intensity processes. In this part of the study the exothermic reaction assisted synthesis of oxide ceramics are studied and compared to the basic sintering bonding. The goal is to examine exothermically reactive raw materials (e.g. aluminium powder) for less energy intensity synthesis of mullite and spinel based ceramics. Thermodynamic calculations and evaluations are presented for selected mixtures. The thermal behaviour of raw materials and thermal evolution of mixtures was studied by using thermogravimetry (TGA) giving a simultaneous Differential Scanning Calorimetry signal (DSC). Phase structure evolution was analysed by an X-ray diffractometry (XRD) and morphology of raw materials and final products were analysed by scanning electron microscope (SEM).",
keywords = "low energy intensity processing, exothermic, mullite based ceramics",
author = "Marjaana Karhu and Juha Lagerbom and P{\"a}ivi Kivikyt{\"o}-Reponen",
note = "Project code: 101939 ; 6th International Congress on Ceramics, ICC6, ICC6 ; Conference date: 21-08-2016 Through 25-08-2016",
year = "2016",
language = "English",

}

Karhu, M, Lagerbom, J & Kivikytö-Reponen, P 2016, 'Exothermic assisted synthesis of mullite and spinel based ceramics' Paper presented at 6th International Congress on Ceramics, ICC6, Dresden, Germany, 21/08/16 - 25/08/16, .

Exothermic assisted synthesis of mullite and spinel based ceramics. / Karhu, Marjaana; Lagerbom, Juha; Kivikytö-Reponen, Päivi.

2016. Paper presented at 6th International Congress on Ceramics, ICC6, Dresden, Germany.

Research output: Contribution to conferenceConference articleScientific

TY - CONF

T1 - Exothermic assisted synthesis of mullite and spinel based ceramics

AU - Karhu, Marjaana

AU - Lagerbom, Juha

AU - Kivikytö-Reponen, Päivi

N1 - Project code: 101939

PY - 2016

Y1 - 2016

N2 - Typically synthesis of oxide ceramics requires high temperatures and long heat treatment times consuming a lot of energy which increases the cost of products and the environmental burden. In order to produce more economical and more environmental friendly oxide ceramics low-energy intensity processes are sought for. The potential of mine tailings as a secondary raw material source has been acknowledged widely. Compositions of mine tailings vary, including typically SiO2, MgO, Al2O3 and CaO as the main components. Presented study is a part of the research aiming to utilize selected mine tailings based minerals in production of porous ceramics by low energy intensity processes. In this part of the study the exothermic reaction assisted synthesis of oxide ceramics are studied and compared to the basic sintering bonding. The goal is to examine exothermically reactive raw materials (e.g. aluminium powder) for less energy intensity synthesis of mullite and spinel based ceramics. Thermodynamic calculations and evaluations are presented for selected mixtures. The thermal behaviour of raw materials and thermal evolution of mixtures was studied by using thermogravimetry (TGA) giving a simultaneous Differential Scanning Calorimetry signal (DSC). Phase structure evolution was analysed by an X-ray diffractometry (XRD) and morphology of raw materials and final products were analysed by scanning electron microscope (SEM).

AB - Typically synthesis of oxide ceramics requires high temperatures and long heat treatment times consuming a lot of energy which increases the cost of products and the environmental burden. In order to produce more economical and more environmental friendly oxide ceramics low-energy intensity processes are sought for. The potential of mine tailings as a secondary raw material source has been acknowledged widely. Compositions of mine tailings vary, including typically SiO2, MgO, Al2O3 and CaO as the main components. Presented study is a part of the research aiming to utilize selected mine tailings based minerals in production of porous ceramics by low energy intensity processes. In this part of the study the exothermic reaction assisted synthesis of oxide ceramics are studied and compared to the basic sintering bonding. The goal is to examine exothermically reactive raw materials (e.g. aluminium powder) for less energy intensity synthesis of mullite and spinel based ceramics. Thermodynamic calculations and evaluations are presented for selected mixtures. The thermal behaviour of raw materials and thermal evolution of mixtures was studied by using thermogravimetry (TGA) giving a simultaneous Differential Scanning Calorimetry signal (DSC). Phase structure evolution was analysed by an X-ray diffractometry (XRD) and morphology of raw materials and final products were analysed by scanning electron microscope (SEM).

KW - low energy intensity processing

KW - exothermic

KW - mullite based ceramics

M3 - Conference article

ER -

Karhu M, Lagerbom J, Kivikytö-Reponen P. Exothermic assisted synthesis of mullite and spinel based ceramics. 2016. Paper presented at 6th International Congress on Ceramics, ICC6, Dresden, Germany.