Publication result detail

Sintering behavior of feldspar rocks

SOKOLÁŘ, R.; VODOVÁ, L.

Original Title

Sintering behavior of feldspar rocks

English Title

Sintering behavior of feldspar rocks

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

Sintering behaviour as dependence of water absorption, flexural strength and firing shrinkage of dry pressed test samples made from three different types of feldspar rocks on the firing temperature (1120 – 1300 °C) was determined. Potassium, potassium-sodium and sodium-calcium industrially milled feldspars with similar granulometry according to equivalent mean spherical diameter of the grains d(0.5) in the range of 16.6 – 20.8 microns were used. The sintering process was described according to changes in mineralogical composition of the fired test samples too. During the sintering process, feldspars gradually disappear in phases – first of all alkali feldspars (albite, microcline); anorthite (calcium feldspar) is more resistant to melting thanks to its higher melting temperature and it increases the sintering temperature of feldspar. Sodium-potassium feldspar Z43NaK50 with the lowest content of alkalis (3.35 % of K2O and 2.67 % of Na2O) and the highest equivalent 2mean spherical diameter d(0.5) showed the most intensive sintering activity.

English abstract

Sintering behaviour as dependence of water absorption, flexural strength and firing shrinkage of dry pressed test samples made from three different types of feldspar rocks on the firing temperature (1120 – 1300 °C) was determined. Potassium, potassium-sodium and sodium-calcium industrially milled feldspars with similar granulometry according to equivalent mean spherical diameter of the grains d(0.5) in the range of 16.6 – 20.8 microns were used. The sintering process was described according to changes in mineralogical composition of the fired test samples too. During the sintering process, feldspars gradually disappear in phases – first of all alkali feldspars (albite, microcline); anorthite (calcium feldspar) is more resistant to melting thanks to its higher melting temperature and it increases the sintering temperature of feldspar. Sodium-potassium feldspar Z43NaK50 with the lowest content of alkalis (3.35 % of K2O and 2.67 % of Na2O) and the highest equivalent 2mean spherical diameter d(0.5) showed the most intensive sintering activity.

Keywords

feldspars, sintering, porosity, mineralogical composition

Key words in English

feldspars, sintering, porosity, mineralogical composition

Authors

SOKOLÁŘ, R.; VODOVÁ, L.

Released

08.10.2014

Publisher

IJES

Location

Gazipur, Bangladesh

ISBN

2319-6483

Periodical

Research Inventy

Volume

4

Number

10

State

People's Republic of Bangladesh

Pages from

49

Pages to

55

Pages count

7

BibTex

@article{BUT111741,
  author="Radomír {Sokolář} and Lucie {Keršnerová}",
  title="Sintering behavior of feldspar rocks",
  journal="Research Inventy",
  year="2014",
  volume="4",
  number="10",
  pages="49--55",
  issn="2319-6483"
}