CHANGE IN POROUS NATURE OF KAOLINITE WITH HYDROCHLORIC ACID LEACHING.

Srini Raghavan, S. Y. Gajam

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Changes in the pore structure of kaolinite clay that result from calcination and hydrochloric acid leaching have been studied by a gas adsorption technique. The results show that the surface area, macropore volume and micropore volume of the leached residue increase with the extent of leaching up to a leach time of 1 h and decrease thereafter. Calcination at 500-750 degree C appears to destroy the structure of the clay, but has no significant effect on its porous nature.

Original languageEnglish (US)
Pages (from-to)79-82
Number of pages4
JournalTransactions of the Institution of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy
Volume94
StatePublished - Jun 1985

Fingerprint

Kaolin
Hydrochloric Acid
Kaolinite
hydrochloric acid
Hydrochloric acid
Calcination
Leaching
kaolinite
Clay
leaching
clay
Gas adsorption
macropore
Pore structure
surface area
adsorption
gas
effect

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology
  • Metals and Alloys

Cite this

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abstract = "Changes in the pore structure of kaolinite clay that result from calcination and hydrochloric acid leaching have been studied by a gas adsorption technique. The results show that the surface area, macropore volume and micropore volume of the leached residue increase with the extent of leaching up to a leach time of 1 h and decrease thereafter. Calcination at 500-750 degree C appears to destroy the structure of the clay, but has no significant effect on its porous nature.",
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