Crystallization of carnallite from KCl-MgCl<sub>2</sub> brine solutions by solvent evaporation process and its structural and mechanical characterization
Carnallite crystals have been synthesized from brine solutions at room temperature (23°C) by solvent evaporation growth technique to show the effect of the concentration of potassium chloride (KCl) and magnesium chloride (MgCl2) on the growth, structural and mechanical properties of the crystal. Transparent and pseudo-hexagonal shape carnallite crystals with the dimension of 4 ´ 5 ´ 2 mm to 16 ´ 13 ´ 3 mm were grown. The crystals were characterized by powder X-ray diffraction and the lattice parameters were found to be a = 9.598Å, b = 16.141Å and c = 22.519Å, space group: Pnna, Z: 12, ? = ? = ? = 90° with the unit cell volume, V = 3488.67Å3. The lattice parameters are found to be in good agreement with the standard values and the structure of the crystal is orthorhombic. A Vickers micro hardness test was carried out to determine the hardness number and work hardening coefficient of the carnallite crystals.
How to Cite
LicenseAuthors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.