The crystallization kinetics of potassium chloride in the presence of additives with common ions

Küçük Resim Yok

Tarih

2013

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

In this study, the growth and dissolution rates of closely sized KCl crystals that were classified with respect to their separation voltages in an electrostatic separator were investigated in the presence of K 2SO4, CH3COOK, NH4Cl and BaCl 2 additives, having common cations or anions. Separation voltages were taken as a measure of surface potential. The experiments were carried out in a typical stagnant medium type single crystal measurement system. From experimental results it is observed that thread-like growth behaviors resulting from surface nucleation were dominant and dead zones where there was no growth or dissolution did always exist. For additives having common cation, it was found that the growth in the thread-like structure increases with the increase of surface potential. It was also found that, additives having common anions, initially led to decrease and neutralize the surface potential, then oppositely charged the crystal surface, when the crystal growth/dissolution behavior changes were considered. This study obviously proved that, crystal growth and dissolution behaviors can be controlled by changing the surface potentials of crystals by using additives having common ions. © 2013 Elsevier B.V. All rights reserved.

Açıklama

Anahtar Kelimeler

A1. Additive, A1. Dendrites, A1. Surface structure, A2. Growth from solutions, A2. Single crystal growth, B1. Potassium compounds

Kaynak

Journal of Crystal Growth

WoS Q Değeri

Q2

Scopus Q Değeri

Q2

Cilt

383

Sayı

Künye