Particle size distributions of radioactive pollution soils and its influence on consistence of the shelterbelt forest ranges

2015 ◽  
Vol 5 (2) ◽  
pp. 93-103
Author(s):  
Маркина ◽  
Zoya Markina ◽  
Вечеров ◽  
Vladislav Vecherov
Keyword(s):  
Size Distributions ◽  
Clay Loam ◽  
Particle Size Distributions ◽  
Glacial Deposits ◽  
Parent Materials ◽  
Fine Grained ◽  
Soil Fractions ◽  
South West ◽  
Dominant Soil ◽  
Fine Grained Sand

Presents characteristic of the soil texture that formed at mixture of moraine and fluvial-glacial deposits, moraine that overlaid clay loam mantle, clay loam mantle in shelterbelt forest ranges at south-west areas of the Bryansk region that contaminate radioactive fallouts in conse-quence of the Chernobyl accident. Dominant soil fractions determined in soil horizonts, its formed at different parent rock materials. There is a growing number of fine-grained sand and silt soil fractions in the moraine overlaid clay loam mantle compared to fluvio-glacial deposits in the relief of parent materials.

Laboratory processing trials on kaolin-bearing sandstones from Pugu, Tanzania, using conventional and new hydrocyclone bodies

Clay Minerals ◽  
1989 ◽  
Vol 24 (3) ◽  
pp. 539-548 ◽  
Author(s):  
A. J. Bloodworth ◽  
D. J. Morgan ◽  
D. A. Briggs
Keyword(s):  
Particle Size ◽  
Laboratory Scale ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Minimal Processing ◽  
Fine Grained ◽  
Multiple Unit

AbstractKaolins have been separated from sandstones from the Pugu Hills deposit, Tanzania, using a 15 mm glass hydrocyclone and a laboratory-scale multiple unit consisting of six 10 mm cyclones. Two types of sandstone were treated—containing a disordered kaolin (Pugu D) and a well-ordered variety (Pugu K)—to see whether products could be obtained that met particle-size specifications for paper manufacture. Pugu D gave a product that would meet specifications for both paper-filling and -coating applications with minimal processing, although the extremely fine-grained nature of this kaolin could lead to high viscosities in suspension. Processing of Pugu K gave products containing up to 97% kaolin and particle-size distributions that would meet specifications for filler and, possibly, coating clay. However, it was impossible to eliminate 3% or so of fine-grained quartz from these products and this could militate against use in paper manufacture.

254. A Comparison of the Particle Size Distributions for Aerosols Generated During Wet Grinding and Dry Deburring of Beryllium

1999 ◽  
Author(s):  
K.K. Ellis ◽  
R. Buchan ◽  
M. Hoover ◽  
J. Martyny ◽  
B. Bucher-Bartleson ◽  
...  
Keyword(s):  
Particle Size ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Wet Grinding

Measurements of Mineral Particle Size Distributions by a Buoyancy Weighing Method

2010 ◽  
Vol 126 (10/11) ◽  
pp. 577-582 ◽  
Author(s):  
Katsuhiko FURUKAWA ◽  
Yuichi OHIRA ◽  
Eiji OBATA ◽  
Yutaka YOSHIDA
Keyword(s):  
Particle Size ◽  
Mineral Particle ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Weighing Method

Overpressure Identification Using The Eaton Method on The Gumai Formation of Geragai Graben, Jambi Sub Basin

2020 ◽  
Author(s):  
A. O. Marnila
Keyword(s):  
Pressure Data ◽  
Stratigraphic Sequence ◽  
Fine Grained ◽  
Marine Sedimentation ◽  
Plot Analysis ◽  
Significant Reversal ◽  
Porosity And Permeability ◽  
Upper Level ◽  
Type Data ◽  
Fine Grained Sand

Geragai graben is located in the South Sumatera Basin. It was formed by mega sequence tectonic process with various stratigraphic sequence from land and marine sedimentation. One of the overpressure indication zones in the Geragai graben is in the Gumai Formation, where the sedimentation is dominated by fine grained sand and shale with low porosity and permeability. The aim of the study is to localize the overpressure zone and to analyze the overpressure mechanism on the Gumai Formation. The Eaton method was used to determine pore pressure value using wireline log data, pressure data (RFT/FIT), and well report. The significant reversal of sonic and porosity log is indicating an overpressure presence. The cross-plot analysis of velocity vs density and fluid type data from well reports were used to analyze the causes of overpressure in the Gumai Formation. The overpressure in Gumai Formation of Geragai graben is divided into two zones, they are in the upper level and lower level of the Gumai Formation. Low overpressure have occurred in the Upper Gumai Formation and mild overpressure on the Lower Gumai Formation. Based on the analyzed data, it could be predicted, that the overpressure mechanism in the Upper Gumai Formation might have been caused by a hydrocarbon buoyancy, whereas in the Lower Gumai Formation, might have been caused by disequilibrium compaction as a result of massive shale sequence.

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