Affiliation:
1. Korea Institute of Geoscience and Mineral Resources (KIGAM)
2. Korea Institute of Geoscience and Mineral Resource KIGAM
3. Seoul National University
Abstract
Precipitated Calcium Carbonate (PCC) is obtained through three processes; that of
calcination, hydration, and carbonation. Thus, changes in each process condition determine the
particle size or morphology of the mediums (calcium oxide and calcium hydroxide) as well as the
product (PCC). To date, studies concerning precipitated calcium carbonate have mainly focused on
the carbonation process, aimed at the manufacturing of PCC. Thus far, few studies on calcination or
hydration have been conducted.
Calcium hydroxide is regarded as the most important factor during the carbonation process. It is
obtained through a hydration process. Therefore, in order to create the valuable PCC studies that
center on the hydration process should be carried out. The present study seeks to investigate the effect
of the hydration condition, particularly the temperature, on the synthesis characteristics of calcium
hydroxide and aragonite PCC. The results show that the particle size of calcium hydroxide changes
with variations in the initial hydration temperature. In particular, a higher initial temperature resulted
in a larger particle size of the calcium hydroxide used in the synthesis. The particle size and yield of
aragonite also increased when calcium hydroxide created at high temperatures was used. However,
the water/solid ratio or total amount at the hydration time had no effect on the manufacturing process
of aragonite.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics
Cited by
8 articles.
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