Results 61 to 70 of about 596 (160)

Study on the Thixotropy of Mineral Dispersions

open access: yesYankuang ceshi, 2014
At present, there is no national standard method to regulate the test method of thixotropy. The light industry standard of QB/T 1545-1992 is still available to test the thixotropy of nonmetallic mineral materials. The test method of thixotropy introduced
CHEN Yan-fang   +3 more
doaj   +2 more sources

Gold sorption on modified saponite

open access: yesЗаписки Горного института
A potential method for modifying saponite (intercalation) ensuring its high sorption capacity for gold was theoretically and experimentally substantiated.
Valentin A. Chanturiya   +2 more
doaj  

PHASE FORMATION PROCESSES IN STEEL – BENTONITE INTERFACE IN THE CONDITIONS OF RADIOACTIVE WASTE GEOLOGICAL REPOSITORY EVOLUTION

open access: yesГеохімія техногенезу, 2019
The review work presents the analysis of up to date publications, including original ones, devoted to studying of nano-sized mineral phase formation processes on the interface surface of a bentonite buffer, mineral composition of which contains ...
Shabalin B.   +3 more
doaj   +1 more source

Surface Clay and Mineral Exploration Using Hyperspectral Imaging: Advanced Techniques for Geospatial Analysis [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This research investigates the application of hyperspectral imaging (HSI) for surface clay and mineral exploration, specifically targeting kaolin, hematite, saponite, and illite in the Udaipur region of Rajasthan, India an area known for its complex and ...
S. Raut   +8 more
doaj   +1 more source

Chitosan-Modified Smectite Clay and Study on Adsorption- Desorption of Urea

open access: yesChemical Engineering Transactions, 2017
This work presented a laboratory studies on the preparation of chitosan-modified clay and the study on urea adsorption-desorption. Modified clay was prepared by intercalating chitosan into layer structure of smectite clay; saponite and montmorillonite ...
A. Puspita, G. Prawati, I. Fatimah
doaj   +1 more source

The beidellite-saponite series: an experimental approach

open access: yesEuropean Journal of Mineralogy, 1993
The study of the octahedral Al-Mg series in smectites was conducted using synthesis methods at 200-250°C. All synthesized clays were tetrahedrally charged thus leading to a solid-solution between beidellite and saponite end-members. The TEM chemical microanalyses indicated that the Al-Mg series was continuous between these two end-members without ...
Olivier Grauby   +3 more
openaire   +1 more source

KARAKTERISASI SIFAT MAGNET DAN KANDUNGAN MINERAL PASIR BESI SUNGAI BATANG KURANJI PADANG SUMATERA BARAT

open access: yesJIF (Jurnal Ilmu Fisika), 2013
Sifat magnet yang ditentukan pada penelitian ini adalah suseptibilitas magnetik dan kandungan mineral pasir besi. Persentase massa pasir besi yang terdapat di dalam pasir di lokasi penelitian tidak merata dengan nilai berkisar antara 5,01% dan 20,26 ...
Afdal Afdal
doaj   +1 more source

The nontronite-saponite series: An experimental approach

open access: yesEuropean Journal of Mineralogy, 1994
The study of the octahedral Fe-Mg substitution in smectites was conducted using clay synthesis at 200°C. Mossbauer data revealed that only ferric iron occurs in synthesized smectites. The studied series is then obviously heterovalent. All synthesized clays were tetrahedrally charged leading to structural formulae varying between nontronite and saponite
Olivier Grauby   +3 more
openaire   +1 more source

CONTROLLING FACTOR IN ALUMINA PILLARED SAPONITE AND ALUMINA PILLARED MONTMORILLONITE SYNTHESIS

open access: yesIndonesian Journal of Chemistry, 2010
The effect of synthesis parameters to the physical properties of pillared saponite and pillared montmorillonite was examined. Mol ratio of Al to clay mass in the range 1.0 - 5.0 and two different calcination methods; conventional calcination and ...
Is Fatimah   +2 more
doaj   +1 more source

Hydration-Induced Local Molecular Structures in Nano-Layered Clay Particles [PDF]

open access: yesЖурнал нано- та електронної фізики, 2013
Positronium (Ps) annihilation spectroscopy and thermogravimetry and differential thermal analysis (TG-DTA) were conducted for synthetic smectite clay minerals to investigate local molecular structures induced by water adsorption and desorption.
K. Sato, K. Numata
doaj  

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