Access Restriction

Author Собота, И.
Source Directory of Open Access Journals (DOAJ)
Content type Text
Publisher Saint-Petersburg Mining University
File Format HTM / HTML
Date Created 2017-12-15
Copyright Year ©2017
Language English ♦ Russian
Subject Domain (in LCC) TN1-997
Subject Keyword Pipeline installation ♦ Mining engineering ♦ Hydrotransport ♦ Metallurgy ♦ Saline water- fly ash mixtures ♦ Technology
Abstract In Polish mining for backfilling the fly ash mixtures are used. Last time for fly ash mixtures preparation the saline water from mine have been used, to thanks to that the saline water missing the surface waters. Usage of saline water for fly ash mixture preparation causes the changes in energy looses during the flow in pipelines. The paper presents the results of energy looses measurement іn laboratory pipeline installation with diameter D =50 mm. The measurements have been performed for different fly ash – saline water proportions. Tested fly-ash from Siersza power plant has typical properties (grain size distribution curve, density) for ashes used for backfilling mixtures preparation. Increase of fluid (water) salinity modifies fluid viscosity. Brine in comparison with pure water retains as liquid with increased viscosity. Increased viscosity can influence on the mixture ash-brine properties for example causing flocculation effect. Also changeable salinity has an influence on proper determination of resistance (frictional) coefficient λ during mixtures flow in pipelines because it depends on Reynolds number which depends on liquid viscosity. Increase of fly-ash concentrations in fly-ash – brine mixtures cause increase of energy losses.
ISSN 24113336
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2017-06-01
e-ISSN 24113336
Journal Zapiski Gornogo Instituta
Volume Number 225
Issue Number 3

Source: Directory of Open Access Journals (DOAJ)