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Corrosion Study of Glaze-Ceramics Doped Cement-Kiln-Dust Soaked in Concentrated HCl

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Last updated: 22 Jan 2023

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Abstract

  NEW glaze-ceramics formulated from industrial waste have been ....... prepared. The method consists of introducing cement-kiln-dust (CKD) in the industrial glaze-ceramics with various ratios (10-50%) together with the addition of 10gm boric acid. The chemical durability of the prepared composite cement-dust-glaze-ceramics (CDGC) is investigated using high concentrations of (2,5 & 8N) HCl acid solutions. CDGC are vitrified by melting for four hours at 1400oC ± 250oC depending on the amount of CKD introduced. Specifically, the experimental results indicate that the introduction of CKD in industrial glaze decreases durability. At high HCl concentrations, the durabilities of the prepared glaze-ceramics are observed to decrease with increasing the percentage of (CKD) until certain limit and almost constancy. The corrosion results are explained according to the ion exchange mechanism and formation or dissociation of the modified depleted layer. Some hollow and jogged areas are observed by SEM which might be interpreted as evidence of local corrosion phenomena. In addition, the pH values of the leachant solutions are measured. The comparison of hardness for the optimum glaze-ceramic and glaze-ceramic derivatives prepared in this study indicates a degradation % in their chemical and physical properties depending on the amount% of CKD introduced. It is observed that the degradation not only depends on the amount of CKD introduced, but also on the strength of the leaching HCl acid solution. Also, the results show that, the prepared glazes have a surface hardness values ranged from 5.5 to 2.5 in the Mohs scale.

DOI

10.21608/ejchem.2010.1208

Keywords

CKD waste, New glaze-ceramics, Corrosion and Hardness

Volume

53

Article Issue

1

Related Issue

288

Issue Date

2010-02-01

Receive Date

2009-12-13

Publish Date

2010-03-02

Page Start

117

Page End

135

Print ISSN

0449-2285

Online ISSN

2357-0245

Link

https://ejchem.journals.ekb.eg/article_1208.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=1208

Order

8

Type Code

292

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

https://ejchem.journals.ekb.eg/

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Article

Created At

22 Jan 2023