Influence of morphology and surface charge on the suitability of palygorskite as drilling fluid

Selective flotation of silicates and Ca-bearing minerals: The role of non-ionic reagent on cationic flotation

“…The estimated IEP value of palygorskite was between pH 1 and 2. Previous researchers (Mangalhães et al, 2009) who studied the electromobility of three palygorskites from Boa Vista and São Pedro mines, Brazil, by means of electro acoustic method, found that the pH IEP of the three types of palygorskite to be pH 2.6, 3.7 and 3.3. The differences in pH IEP may be explained by the method used and by the fact that palygorskite may contains some impurities which influence the surface mineral charge.…”

Organoclays used as colloidal and rheological additives in oil-based drilling fluids: An overview

“…milks, masks), in addition to fluid carriers for pre-germinated seeds (Galan, 1996;Murray, 1999Murray, , 2000Álvarez et al, 2011). They are also used in water-based drilling fluids (Dahab and Jarjarah, 1989;Dahab, 1991;Neaman and Singer, 2004;Altun and Serpen, 2005;Baltar et al, 2009;Abdo and Haneef, 2013b;Altun et al, 2014;Al-Malki et al, 2016 (Chiari et al, 2003;Río et al, 2011). Reacting in acetone (Wang et al, 2008) Pal Butyl acrylate Reacting in toluene (Wang and Sheng, 2005) Pal 3-aminopropyl triethoxysilane Reacting in toluene (Xue et al, 2010(Xue et al, , 2011 Pal Silane coupling agents KH550 and…”

“…Hence, greater emphasis is placed on the rheological properties provided by the colloidal and rheological additives. Clay minerals, such as montmorillonite (Caenn and Chillingar, 1996;Abu-Jdayil, 2011;Caenn et al, 2011;Abdo and Haneef, 2013a), palygorskite (Guven et al, 1988;Dahab and Jarjarah, 1989;Dahab, 1991;Galan, 1996;Murray, 2000;Neaman and Singer, 2004;Baltar et al, 2009) and sepiolite (Guven, 1981;Guven et al, 1988;Galan, 1996;Altun and Serpen, 2005;Osgouei, 2010;Razali and Zafirah, 2011;Altun et al, 2014;Al-Malki et al, 2016) are widely used as colloidal and rheological additives in water-based drilling fluids, due to their formation of network structure in water. Inspired by the use of clay minerals in water-based drilling fluids, organoclays (OC), which are obtained by reacting clay minerals with organic compounds, are developed to be used in oil-based drilling fluids as rheological additives for many years.…”

Recent progress in dispersion of palygorskite crystal bundles for nanocomposites

“…Suárez (2013, 2014) demonstrate that natural Pal clay mineral is mainly composed of the laths (the smallest structure units), the rods (the oriented association of laths), and the bundles (the association of rods). In many other researches, fibers (Corma et al, 1987;Barrios et al, 1995;Baltar et al, 2009;Boudriche, et al, 2012;Liang et al, 2013) or rods (Chen et al, 2012;Su et al, 2012;Liu et al, 2014b) were frequently adopted to describe the smallest crystal units. In this review, "rod" was used to denote the smallest crystal units (Fig.…”