Open AccessMicro-Fabric Transformations of Ball Clay in Alkaline Environment
Author(s) -
Vishnu Kumar,
P. Hari Prasad Reddy,
Ch. Rama Vara Prasad
Publication year - 2021
Publication title -
nature, environment and pollution technology/nature, environment and pollution technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.154
H-Index - 11
eISSN - 2395-3454
pISSN - 0972-6268
DOI - 10.46488/nept.2021.v20i04.051
Subject(s) - lime , clay minerals , ball mill , curing (chemistry) , dissolution , mineralogy , sodium hydroxide , ball (mathematics) , alkali metal , materials science , chemistry , geology , metallurgy , composite material , mathematics , mathematical analysis , organic chemistry
Based on the strong evidence of case histories, this study focused on mineralogical and morphological changes of an artificial kaolinitic soil -Ball clay, when exposed to different concentrations of sodium hydroxide (0.1N, 1N, 4N, and 8N) under different curing periods (7, 28 and 100 days). Sediment volume tests are conducted on Ball clay with all combinations and results are analyzed with the help of analytical techniques. XRD and SEM studies are analyzed to understand the micro-level changes of alkali contaminated Ball clay. Mineralogical and morphological transmutations of Ball clay are investigated for 7, 28, and 100 days curing period. Results revealed new mineral formations like Sodalite under 4N and 8N concentrations of NaOH with 100 days interactions are well observed. The morphological transformation from needle shape to pellet shape is clear evidence of the rate of dissolution and precipitation of minerals under 100 days curing periods.