Preparation and properties of glass-ceramics from kaolin clay refining waste (Kira) and paper sludge ash

Tomohiro Toya, Yoshikazu Kameshima, Akira Nakajima, Kiyoshi Okada

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Glass-ceramics were prepared from mixtures of wastes generated from refining of silica sand and kaolin clay (Kira) and paper sludge ash. Kira and paper sludge ash were mixed in mass ratios of 55/45. The mixtures were melted at 1400 °C and quenched in water to obtain glasses. The quenched glasses were ground to -6 /°C to 8.1 × 10-6 /°C (30-380 °C) and show non-linearity around the phase transition temperatures of quartz and cristobalite. The chemical durability of the resulting glass-ceramics is excellent in alkali but poor in acid solution. The glass-ceramics show rather better performance than commercial glass-ceramics even when prepared solely from wastes starting materials.

Original languageEnglish
Pages (from-to)789-796
Number of pages8
JournalCeramics International
Volume32
Issue number7
DOIs
Publication statusPublished - 2006
Externally publishedYes

Fingerprint

Ashes
Kaolin
Sewage sludge
Glass ceramics
Refining
Clay
Silica sand
Glass
Quartz
Alkalies
Silicon Dioxide
Superconducting transition temperature
Durability
Phase transitions
Acids
clay
Water

Keywords

  • C. Mechanical properties
  • Chemical durability
  • D. Glass-ceramics
  • Kaolin clay waste
  • Paper sludge ash

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Preparation and properties of glass-ceramics from kaolin clay refining waste (Kira) and paper sludge ash. / Toya, Tomohiro; Kameshima, Yoshikazu; Nakajima, Akira; Okada, Kiyoshi.

In: Ceramics International, Vol. 32, No. 7, 2006, p. 789-796.

Research output: Contribution to journalArticle

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