Persistent Link:
http://hdl.handle.net/10150/188000
Title:
SOME ASPECTS OF HYDROCHLORIC ACID-LEACHING OF KAOLINITE CLAY.
Author:
GAJAM, SOLIMAN YOUNES.
Issue Date:
1985
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
A detailed investigation of the kinetics of dissolution of kaolinite clay in hydrochloric acid solution has been carried out. The rate of dissolution increases with calcination temperature, calcination time, and leach temperature. For example, almost 98% of the aluminum in the clay sample roasted at 540°C for 1 h can be dissolved in 20 min. The presence of fluoride ions in the leach solution significantly enhances aluminum dissolution. Changes in the pore structure of kaolinite clay due to calcination and hydrochloric acid leaching have been studied by a gas adsorption technique. The results obtained 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 thereafter decreases. Calcination at 500-750°C appears to destroy the structure of the clay but has no significant effect on the porous nature of the clay.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Kaolinite.; Leaching.; Hydrochloric acid.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Metallurgical Engineering; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Raghavan, Srini

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleSOME ASPECTS OF HYDROCHLORIC ACID-LEACHING OF KAOLINITE CLAY.en_US
dc.creatorGAJAM, SOLIMAN YOUNES.en_US
dc.contributor.authorGAJAM, SOLIMAN YOUNES.en_US
dc.date.issued1985en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractA detailed investigation of the kinetics of dissolution of kaolinite clay in hydrochloric acid solution has been carried out. The rate of dissolution increases with calcination temperature, calcination time, and leach temperature. For example, almost 98% of the aluminum in the clay sample roasted at 540°C for 1 h can be dissolved in 20 min. The presence of fluoride ions in the leach solution significantly enhances aluminum dissolution. Changes in the pore structure of kaolinite clay due to calcination and hydrochloric acid leaching have been studied by a gas adsorption technique. The results obtained 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 thereafter decreases. Calcination at 500-750°C appears to destroy the structure of the clay but has no significant effect on the porous nature of the clay.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectKaolinite.en_US
dc.subjectLeaching.en_US
dc.subjectHydrochloric acid.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineMetallurgical Engineeringen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorRaghavan, Srinien_US
dc.contributor.committeememberDavenport, W. G.en_US
dc.contributor.committeememberMorris, T. M.en_US
dc.identifier.proquest8522811en_US
dc.identifier.oclc696424638en_US
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