... the possibility of using kaolin clays from Cameroon in the production of dense refractory bricks. The reason for such a study is to optimize the economic potential of a locally available resource for the production of added-value materials. To such an end, it is necessary to choose deposits with sufficient...

... are regoliths in which the granite texture is preserved, and the feldspars are almost completely kaolinized. In the ZAHE, the original texture of the granitic rock is lost, and the main clay mineral is smectite. The mineralogical composition is similar, with kaolinite, smectite, mica, quartz, scarce feldspar...

...Bijan Taheri Abstract This study reports a leaching process along with a novel physical pretreatment technique to remove iron impurities from kaolin using oxalic acid. A detailed examination of the physical properties of the minerals confirmed that almost none of the leaching-resistant iron oxides...

... mineralogical evidence of the PETM and subsequent hyperthermal events in a near-equatorial region represented by the Akli Formation in the Barmer Basin, India. The 32 m-thick succession of the Akli Formation shows abrupt changes in smectite and kaolin abundances preceding, during and succeeding the PETM event...

...Jiaquan Li; Zhiwei Huang; Qian Wang; Fengnian Zhang; Yang Miao; Feng Gao Abstract In this study, aluminium fluoride trihydrate (AlF 3 ⋅3H 2 O) was used to inhibit the sintering of calcined coal-series kaolin (CCSK). In addition, the oil absorption properties of CCSK were studied. The particle-size...

...Zhenying Liu; Nan Xie; Shouwu Huang; Hanxin Zhang; Chongmei Wu; Kai Cui; Yin Liu; Hongzheng Zhu; Jinbo Zhu; Changguo Xue ABSTRACT High-performance mullite-based composite ceramics were prepared successfully using natural kaolin and alumina as raw materials and ZrO 2 as an additive. The influence...

..., processes have been developed to eliminate contaminants, such as iron, and provide alternatives to the used contaminated materials that, after being treated, meet quality criteria. In our previous research, we developed an electrochemical process for kaolin whitening at the laboratory level and bench scale...

...Yolanda Sánchez-Palencia; David Bolonio; Marcelo F. Ortega; María-Jesús García-Martínez; José Eugenio Ortiz; Fernando Rayo; Lucía Arregui; Susana Serrano; Juan F. Llamas; Laureano Canoira Abstract Kaolin waste dumps contain a huge volume of material that cannot be commercialized due to the presence...

... physical experiment to directly measure how slip rates at sites along a bend with geometry typical of gentle restraining bends in the crust (e.g., Mann, 2007 ) respond to fault reorganization and changes in a site's structural position. We used a tabletop split box apparatus filled with wet kaolin...

...Amr B. ElDeeb; Vyacheslav N. Brichkin; Martin Bertau; Mahmoud E. Awad; Yulia A. Savinova Abstract The present work aims to increase the alumina percentage recovery (APR) extracted from kaolin via the addition of 0.5–4.0 wt.% charcoal as a thermochemical fluxing agent in the lime-sintering process...

...Zhe Wang; Hong Li; Haiyan Chen; Juan Lv; Hao Leng; Junhui Xiao; Shuai Wang Abstract Steam jet milling was applied for the first time to ultra-fine grind the filter cake (moisture content 23.80%) produced by a kaolin concentrator. The material was dehydrated and dried simultaneously during grinding...

...Shu-Qin Zheng; Ou Chen; Si-Cheng Liu; An Li; Li-Jun Li; Yong-Bing Yuan; Ceng Zhang Abstract NaY zeolite was synthesized from kaolin/dimethyl sulfoxide (DMSO) intercalation composites using an in situ crystallization technique. The effects of the intercalation ratios and the amounts of the kaolin...

...Jessyka Padilla; Alexander Guzman; Daniel Molina, V; Juan Carlos Poveda-Jaramillo Abstract To produce an optimized matrix for the in situ crystallization of zeolite Y, a commercial kaolin chemically treated with NaOH solution at 97°C for 24 h and thermally transformed from 750 to 1100°C was studied...

...Mohammadreza Izadifar; Peter Thissen; Annett Steudel; Reinhard Kleeberg; Stephan Kaufhold; Jonas Kaltenbach; Rainer Schuhmann; Frank Dehn; Katja Emmerich Abstract Kaolins and clays are important raw materials for production of supplementary cementitious materials and geopolymer precursors through...

... clay minerals is still unclear. The objective of the current study was to investigate the effect of alkali concentration on swelling characteristics of natural and alkali-transformed kaolinitic clays. The study was complemented further with micro-level investigations. Red earth and kaolin, which...

... packages to high thermal constraints (in the case of a fire for example). With the need to develop new fire-resistant materials, the aim of the present study was to develop fire-resistant geopolymer binders based on Callovo-Oxfordian (COx) argillite. Two types of kaolin with different degrees of purity...

...Danyal Karbalaei Saleh; Hadi Abdollahi; Mohammad Noaparast; Alireza Fallah Nosratabad Abstract This study examines the leaching of aluminium from calcined kaolin (metakaolin) with citric, oxalic and lactic acid and binary combinations of these organic acids. The investigated parameters were...

..., and the materials were shown to be potential candidates for the removal of BB-41 dye. * E-mail address of corresponding author: [email protected] 08 03 2018 03 12 2018 Copyright © Clay Minerals Society 2019 2019 Clay Minerals Society Basic Blue 41 Jordanian Kaolin Removal...

...Ali Boukhemkhem; Kamel Rida; Alejandro H. Pizarro; Carmen B. Molina; Juan J. Rodriguez ABSTRACT An iron catalyst supported on the modified Tamazert kaolin has been prepared and tested in catalytic wet peroxide oxidation using phenol and 4-chlorophenol (4-CP) as target compounds (100 mg/L initial...

...Emmanuel Ajenifuja; Abimbola P.I. Popoola; Kabir O. Oyedotun; Olawale Popoola ABSTRACT Kaolin and diatomite are abundant and widely available geological materials that may immobilize or stabilize functional chemical species on their surfaces for various applications. Acid-treated kaolin...