Mechanism of potassium alum crystal growth from solution

Denk, Edward G.; Botsaris, Gregory D.

doi:10.1016/0022-0248(70)90073-4

Cited by 17 publications

(11 citation statements)

References 4 publications

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“…The results obtained for potash alum crystals, single and grown in fluidized bed crystallizer, were fitted to Burton–Cabrera–Frank (BCF), polynuclear, and simple power law equations . The data of Botsaris and Denk obtained for aluminum potassium sulfate crystals in supersaturation range of 2–16% and data of Alexandru and Antohe, obtained for KDP crystals in supersaturation range of 2–10%, were all fitted to the BCF model. Koutsopolous found that the dependence of growth rate of hydroxiapatite on supersaturation (2.05–4.58%) is linear.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Growth Mechanisms of Sodium Chlorate Crystals from Aqueous Solutions

Radiša

Mitrovic

Misailović

et al. 2016

Ind. Eng. Chem. Res.

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Difficulties in determining the crystal growth mechanism from growth rate versus solution supersaturation dependence are discussed. Obtained results indicate that in the supersaturation range of 0.66−1.56%, sodium chlorate crystals grow in accordance with the spiral growth model. It is shown that in the supersaturation range of 0.44−1.32%, the growth mechanism depends on crystal growth history. Namely, the exponent n in the power law R = Kσ n depends on the manner of supersaturation changes (varied from 1.3 to 1.9%). This indicates that the overlapping of diffusion fields of neighboring steps depends on growth history.

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Section: Introductionmentioning

confidence: 99%

Investigation of Growth Mechanisms of Sodium Chlorate Crystals from Aqueous Solutions

Radiša

Mitrovic

Misailović

et al. 2016

Ind. Eng. Chem. Res.

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“…As it can be seen from Figure 1 and Figure 2, growth rates of KDP crystals in {100} direction after dissolution and refaceting pertain to one maximum. Growth and saturation temperatures T and 0 In order to determine the most suitable correlation between the KDP crystal growth rate in {100} direction and supersaturation and to determine crystal growth mechanism in the supersaturation range 6.18 -14.72%, experimental data were fitted with equation (1)(2)(3)(4)(5)(6)(7)(8). Goodness of the fit is tested with Chi-square test.…”

Section: Resultsmentioning

confidence: 99%

Growth Mechanism of KDP Crystals From Aqueous Solutions

Maksimović¹,

Misailović²,

Mitrovic³

et al. 2017

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The results of the effect of the growth history on Potassium Dihydrogen Phosphate (KDP) crystals growth mechanism are presented in the paper. Crystals were grown in temperature range of from aqueous solutions, saturated at . Two types of the experiments were performed. In both types, after the nucleation at crystals were grown at the same temperature for about 1.5 hour and then dissolved at temperature for about 15 min. After refaceting, in the first type, the crystal growth started at , followed by the temperature increasing in steps of to . In the second type, after refaceting the crystal growth started at , followed by the temperature decreasing in steps of to . Obtained results indicate that KDP crystals growth mechanisms do not depend on growth history. They are discussed in accordance with the current theories.

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“…On the other hand, attempts to breakdown the concentration gradient around the crystal, e.g. by stirring or rapid movement, were either of insufficient velocity to guarantee that C interface ¼ C bulk [31,104] or else performed at such high velocities that unexpected phenomena were observed [207]. (2) Inclusions: the relation of convection to the formation of fluid inclusions is extremely complex.…”

Section: Effect Of Gravity On Solution Growthmentioning

confidence: 99%