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Transport of total tailings paste backfill: results of full-scale pipe test loop pumping tests.

Authors
Clark-CC; Vickery-JD; Backer-RR
Source
Spokane, WA: U.S. Department of the Interior, Bureau of Mines, RI 9573, 1995 Jan; :1-27
NIOSHTIC No.
20025402
Abstract
This report presents the results of tests conducted by the U.S. Bureau of Mines to determine the transport characteristics of highly concentrated paste backfill mixes made from dewatered total mine tailings. The slurry concentrations of the mixes were all above 78 pct by weight with slumps ranging from 6.4 to 16.5 cm (2.5 to 6.5 in). Laboratory material property tests and full-scale pumping tests were conducted using pipe diameters of 102, 128, and 154 mm (4, 5, and 6 in) and a positive-displacement pump. The results indicated that the tested backfill mixes can be successfully transported as a stiff paste and identified the influence of and the interaction among the various mix and system variables.
Keywords
Mining-industry; Underground-mining; Rock-mechanics; Room-and-pillar-mining; Waste-disposal; Ground-control
Publication Date
19950101
Document Type
Report of Investigations
Fiscal Year
1995
NTIS Accession No.
PB96-118898
NTIS Price
A03
Identifying No.
RI-9573
ISSN
1066-5552
NIOSH Division
SRL
Source Name
Spokane, WA: U.S. Department of the Interior, Bureau of Mines, RI 9573
State
WA; UT
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division