Preparation of periclase (MgO) nanoparticles from dolomite by pyrohydrolysis–calcination processes

Abstract

Dolomite is one of the most important resources for producing periclase (MgO) nanoparticles, which are of highly demanded in many industrial applications. For that reason, this study investigated to prepare MgO nanoparticles from dolomite through pyrohydrolysis–calcination processes. Each obtained product was characterized using X‐ray fluorescence, scanning electron microscope, X‐ray diffraction, and wet chemical and image processing analyses. Synthetic aragonite (CaCO3) crystals and CO2 gas were obtained as by‐products. The experimental results indicate that each obtained product was identified as a periclase mineral, and the production temperature played a curial role for producing pure MgO nanoparticles. However, the reactivity and particle size distribution of each product were strongly influenced by the production temperature. The particle size of the product obtained at various temperatures ranged from 180.05 nm to 6 μm depending on the production condition. We determined that the calcination process should be conducted to produce MgO nanoparticles. The proposed method brings a new perspective to researchers for the production of MgO nanoparticles from dolomite. © 2017 Curtin University and John Wiley & Sons, Ltd.

Incorporation of Glycine max Merrill Extract into Layered Double Hydroxide through Ion-Exchange and Reconstruction

“…When the reconstruction reaction was over, pristine LDH phase was recovered by exhibiting characteristic (003), (006), (012), and (110) peaks at two theta values 11.38°, 22.53°, 34.74°, and 60.96°, respectively (Figure 1d). There was periclase phase still observed with (200) and (220) peaks at 42.93° and 62.29°, respectively; however, the existence of periclase would not have a negative effect on the current GML-R hybrid in terms of encapsulation, release control, and biological activity of GM as the periclase is bio-compatible and bio-inert [41,42]. Upon the reconstruction reaction, crystallite size of LDH significantly decreased from 15.8 and 29.6 nm to 3.69 and 8.72 nm corresponding to (003) and (110) peaks, respectively.…”

Synthesis of high purity magnesia MgO from Algerian dolomite ore

“…Magnesium oxide (MgO) has an immensely important attractive characteristics: high melting point (~ 2800 o C) [1][2][3][4], good chemical resistance [4][5][6], low dielectric constant [7,8], high electrical resistance [5], low thermal conductivity [6], and nontoxicity [9]. It is used in many application fields [10] such as in cement production [1,4,11,12], refractories elaboration [4,13], water purification [14], as an antibacterial material [7,15], biomaterial [16], in pharmaceuticals and cosmetics [7], in paints [17,18],…”

“…Altiner et al [28] investigated the effect of leaching parameters of dolomite in HCl solution on the dissolution rate. In a follow-up study [8], periclase MgO nanoparticles with very interesting properties were produced from dolomite ore through pyrohydrolysis-calcination processes. The reactivity and particle size were found mainly influenced by the production temperature.…”

Study of using light-burned dolomite ores as raw material to produce magnesium oxysulfate cement

“…In recent years, several scholars have attempted to study the use of dolomite to produce magnesium cement. Altiner and Yildirim (2016, 2017a, 2017b produced MOC cement by the reaction of magnesium oxide and magnesium chloride (MgCl 2 ) that were obtained from dolomite by a method of leaching-carbonation-evaporation-pyrohydrolysis. Chernykh et al (2015) added chloride additives during the calcination process of dolomite rocks, leading to a decrease in the decomposition temperature of magnesite while controlling the thermal decomposition for calcium carbonate (CaCO 3 ) as well, resulting in a weakening of the negative effects of free lime (f-CaO) on cement.…”