搜索结果: 1-15 共查到“矿床学与矿相学 Size”相关记录33条 . 查询时间(0.178 秒)
Removal of Brilliant Green from Aqueous Solution Using Diatomite-Attapulgite Composite Nano-Size Adsorbent
Adsorption Attapulgite Brilliant Green Diatomite Nano-Size Adsorbent
2011/11/22
Diatomite-attapulgite composite nano-size adsorbent was prepared using natural diatomite and attapulgite through compounding, granulation, calcination and activation. After elementary characterization...
Evolution of Fundamental-Particle Size during Illitization of Smectite and Implications for Reaction Mechanism
Crystal Growth Fundamental Particle Illite-Smectite Illitization Mechanism Lognormal Distribution Ostwald Ripening
2011/12/6
Abstract: Area-weighted thickness distributions of fundamental illite particles for samples of illite and illite-smectite from seven locations (including bentonites and hydrothermally altered pyroclas...
Mineral-Content and Particle-Size Effects on the Colloidal Properties of Concentrated Lateritic Suspensions
Concentrated Suspensions Heterocoagulation Interfacial Mobility Lateritic Suspensions Mineral Content of Suspensions Rheology Yield Stress
2011/12/7
Abstract: The rheological behavior of concentrated lateritic suspensions from Cuba is affected by mineral composition and particle size. Electrophoretic mobility and yield stress were considered. The ...
Magnetite from magnetotactic bacteria: Size distributions and twinning
Magnetite magnetotactic bacteria Size distributions twinning
2012/4/1
We studied intracellular magnetite particles produced by several morphological types of magnetotactic bacteria including the spirillar (helical) freshwater species,Magnetospirillum magnetotacticum,and...
A new era in hydrofluoric acid solution calorimetry: Reduction of required sample size below 10 milligrams
era hydrofluoric acid solution calorimetry milligrams
2012/3/31
Significant advances have been made in hydrofluoric acid solution calorimetry at La-fayette College in the past 15 years. To determine the degree to which these developments enable the reduction of sa...
Particle size effects on transformation kinetics and phase stability in nanocrystalline TiO2
Particle size effects transformation kinetics phase stability nanocrystalline TiO2
2012/4/5
Kineticstudiesconductedprimarilybetween465and525Cdemonstratethattherate
ofthepolymorphicanatasetorutiletransformationincreasesdramaticallywhenthereact-
inganataseisvery?nelycrystalline.Coarseningoft...
Radiogenic Argon Released by Stepwise Heating of Glauconite and Illite: The Influence of Composition and Particle Size
Argon Dehydroxylation Glauconite Illite
2011/12/27
Various size fractions of several samples of glauconitic clay and illite were heated stepwise under vacuum for extended periods to: 1) evaluate radiogenic-argon (Ar) yields in relation to composition ...
A reevaluation of crystal-size distributions in chromite cumulates
reevaluation crystal-size distributions chromite cumulates
2012/4/9
Although studies have shown that igneous cumulates can form byin situ crystallization without requiring crystal settling, it has not been demonstrated that crystal-size distribu-tions (CSDs) are consi...
Size and Shape of Allophane Particles in Dispersed Aqueous Systems
Allophane Cluster Colloid Domain Light Scattering Shape Size Ultrafiltration Viscosity
2011/12/27
Abstract: Aqueous suspensions of allophane show relatively high viscosity, presumably because of strong particle interaction between the unit particles. To test this hypothesis, we measured the partic...
Dehydroxylation of Aluminous Goethite: Unit Cell Dimensions, Crystal Size and Surface Area
Al-substitution Crystal size Dehydroxylation Goethite Hematite Specific surface area Unit cell
2011/12/27
This work investigates unit cell dimensions, crystal size and specific surface area of aluminous goethite that was progressively dehydroxylated to form hematite. Goethite synthesized from the ferrous ...
Size of Mica Domains and Distribution of the Adsorbed Na-Ca Ions
Electrophoretic mobility Mica domains Photon correlation spectroscopy
2011/12/29
Mica domains have received less attention in the literature than smectite quasi-crystals. This study was conducted to determine whether mica crystals form domains in suspension, the conditions in whic...
Porosity-Size Relationship of Drilling Mud Flocs: Fractal Structure
Drilling mud Flocs Fractal Porosity
2011/12/29
The porosities of flocs formed from a used drilling mud were determined by measuring sizes and settling speeds of individual flocs. These flocs were produced in a Couette-type flocculator under a vari...
The Effect of Unequal Ionic Size on the Swelling Pressure in Clays
Clay Swelling pressure Unequal ion size
2011/12/31
In this paper, we use the unequal radius modified Gouy-Chapman theory to evaluate the effect of the ionic size of the electrolyte on the swelling pressures (II) in different clay systems immersed in e...
Weathering of Iron-Bearing Minerals in Soils and Saprolite on the North Carolina Blue Ridge Front: I. Sand-Size Primary Minerals
Almandine Biotite Chlorite Iron Magnetite Saprolite Soils Weathering
2011/11/30
Abstract: The weathering products of primary biotite, chlorite, magnetite, and almandine in mica gneiss and schist in the North Carolina Blue Ridge Front were determined. Sand-size grains of biotite, ...
Compositional and Structural Variations in the Size Fractions of a Sedimentary and a Hydrothermal Kaolin
Dickite Halloysite Infrared spectroscopy Kaolinite Particle size Thermal analysis Scanning electron microscopy X-ray powder diffraction
2012/1/11
The 16-8-, 8-5-, 5-2-, 2-1-, 1-0.5-, 0.5-0.3-, 0.3-0.1-, and <0.1-祄 size fractions were centrifuged from a Georgia (U.S.A.) sedimentary kaolin and a hydrothermal kaolin from the Sasso mine (Italy) and...