Looseness coefficient of tailings sand

Mechanical characteristics of mine tailings and seismic responds of tailing reservoir

These tailings are classified as nonplastic silt and sand. Specimens of the tailings were prepared as slurries, consolidated to vertical effective …

Appendix P – Revised Tailings Consolidation Report

1 5 December 2017 Jamie Hacker McArthur River Mining PO Box 36821 Winnellie NT 0821 Our ref: G:321747605WP65221 Addendum 2017-12-04.docx Your ref: Dear Jamie Addendum to GHD Report - Tailings Deposition Open Pit Consolidation Modelling

Cycloning of tailing for the production of sand as TSF …

Hydro-cycloning of plant tailings is an often used tool to produce relatively coarse free draining sand (cyclone underflow) for Tailing Storage Facility (TSF) embankment construction. This paper outlines the available choices and design considerations involved for the minimizat

Tailings Co-disposal of Tailings

Co-disposal is the mixing of fine and coarse mine waste to produce a single waste stream (Martin, Davies et al. 2002). Mixing the fine and coarse waste reduces the empty void space primarily associated with coarse waste streams whilst simultaneously increasing the strength of the fines. The strength and rapid stabilisation of the co-disposal ...

Geotechnical Properties of Mine Tailings

in the risk of tailing dam failure (Klohn 1997; Davis 2002; Psarropoulos and Tsompanakis 2008; Rico et al. 2008; Azam and Li 2010; Ferdosi et al. 2015). In fact, the main concern with such tailing dams is the stability during the mining operation and after

Oil Sands Tailings Technology Review

Oil Sands Tailings Technology Review. Oil Sands Research and Information Network, University of Alberta, School of Energy and the Environment, Edmonton, Alberta. OSRIN Report No. TR-1. 136 pp. Copies of this report may be obtained from OSRIN at osrin

CONSOLIDATION MODELING ON OIL SANDS TAILINGS

In Northern Alberta, Canada, oil sands industries produce large volumes of tailings. For Syncrude Ltd. alone, there is currently 400 Mm3 of fine tailings and this amount is growing. To manage the volumes effectively, engineers must be able to predict a rate of

Geotechnical characterization of old tailings for use as sand …

Fine tailings consist of silt (ML, MH) and clay (CL, CH); they are very soft to soft, with blow count values (N) between 0 and 7, cone tip resistance (qc) between 0.1 and 1 MPa, and co-efficient of permeability kh measured between 2E-6 and 5E-6 cm/s using the correlation from ...

Geotechnical Properties of Mine Tailings | Journal of Materials in …

in which p 0 = 1 kPa; e 0 = initial void ratio corresponding to p 0; and C c = compression index. The fitting results of the four tailings are summarized in Table 2.The compression index (C c) is 0.046 and 0.260 for the coarse and fine iron tailings, and 0.025 and 0.085 for the coarse and fine copper tailings. ...

Geotechnical stability considerations in the design and …

compacted tailings sands, and a downstream shell of sand and gravel. Table 1 is an evaluation of the poten-tial for instability of this and a similar impoundment. The potential for instability in the long term is moderate. Because the sideslopes of the embankment ...

Tailings Ponds 101 | Oil Sands Magazine

 · TAILINGS PONDS 101. Tailings ponds (or tailings storage facilities) play a critical role in storing solids from mined oil sands and managing water flows. These ponds are massive earth structures, initially constructed from overburden hauled from the mine site. Tailings ponds are normally located in a part of the lease that has little or no bitumen.

9.3 Tailings Storage Facilities and Waste Rock Stockpiles

9.3 Tailings Storage Facilities and Waste Rock Stockpiles 9.4 Spent Heap Leach 9.5 Landscape Restoration 10 Wrap Up 11 Suggested Reading 12 Exercises Exercise 1 – Solute Loading Exercise 2 - Inflow Prediction to Open Pit Mine Exercise 3 - Water

Technical Report: Design and Evaluation of Tailings Dams | US …

EPA 530-R-94-03 8 NTIS PB94-20184 5 TECHNICAL REPORT DESIGN AND EVALUATION OF TAILINGS DAMS August 1994 U.S. Environmental Protection Agency Office of Solid Waste Design and Evaluation of Tailings Dams DISCLAIMER AND

Efficiency of Tailings Sand Operations

assume sand cell construction using tailings sand against 1H:1V clay till (Zone S) core slope on AMEC010467_0001 AMEC00094 the upstream side and a 1.3H:1V slope of the upstream on the beach side. It is our understanding that Zone U could cover a range ...

Tailings | Alberta Energy Regulator

Tailings Management Framework. In March 2015, the Government of Alberta released the Lower Athabasca Region: Tailings Management Framework for Mineable Athabasca Oil Sands (TMF). The framework says that all fluid tailings should be ready to reclaim within ten years of the end of a mine''s life. We used the TMF to create Directive 085.

Study on static and dynamic strength characteristics of …

 · The dynamic stress and strain relationship of the tailings silty sand and the tailings mealy sand of the tailings dam whose height was 51 m was studied (Yan and Wang, 1990). The disturbed samplings of Dashihe tailings with 14 m height were researched through dynamic simple shear tests and dynamic triaxial tests.

Wikizero

WikiZero Özgür Ansiklopedi - Wikipedia Okumanın En Kolay Yolu A panorama of Broken Hill, New South Wales, backed by waste dumps and tailings from the line of lode

Finding alternative sources of sand – mine tailings

 · At the same time, changes in mining, environmental and waste policy means large volumes of mine tailings now need to be treated differently in many places in the world. The rising value of sand and the costs of storing mining residues may give new impetus to a circular economy synergy with a strong contribution to sustainable development.

(PDF) LIQUEFACTION RESISTANCE OF THICKENED TAILINGS

In this paper, the resistance to liquefaction due to earthquakes of a proposed bauxite tailings deposit placed at a 2.9° slope is analyzed. The water content of the thickened tailings is high enough to make them susceptible to liquefaction even when placed at such gentle slopes.

Experimental Study on Permeability Coefficient in Layered Fine Tailings …

Research Article Experimental Study on Permeability Coefficient in Layered Fine Tailings under Seepage Condition Tao Dong,1 Ping Cao,1 Rong Gui,2 Qibin Lin,1 and Zhizhen Liu1 1School of Resources and Safety Engineering, Central South University, Changsha 410083, China ...

Utilization of Iron Tailings Sand as an Environmentally Friendly Alternative to Natural River Sand …

The increasing annual emissions of iron ore tailings have proved a great threat to the natural environment, and the shortage of natural river sand, as well as the pursuit of sustainable development materials, provides motivation to reuse iron ore tailings as a fine aggregate in concrete. Due to the …

Settling, consolidation and shear strength behaviour of coal tailings …

 · The average coefficient of consolidation for Slurry 1 and 2 was 8.0 × 10 −8 and 6.0 × 10 −8 m 2 /s, respectively, ... Coagulation enhanced electrokinetic settling of mature fine oil sands tailings Int J Mining Sci Technol, 29 (2) (2019), pp. 199-208 Article B., I., ...

Oil Sands Tailings Ponds: Challenges and Solutions

 · Oil sands tailings ponds have a host of issues, especially when it comes to impacts on wildlife and ability to remediate. Nelson Debogorski - August 27, 2021. Fluid tailings are the sand, silt, clay and water (which include toxic acids, metals and residual bitumen) that remain following the bitumen mining and extraction process.

Tailings

During extraction of the oil from oil sand, tailings consisting of water, silt, clays and other solvents are also created. This solid will become mature fine tailings by gravity. Foght et al (1985) estimated that there are 10 3 anaerobic heterotrophs and 10 4 sulfate-reducing prokaryotes per milliliter in the tailings pond, based on conventional most probable number …

Technical Report: Design and Evaluation of Tailings Dams | US EPA …

EPA 530-R-94-03 8 NTIS PB94-20184 5 TECHNICAL REPORT DESIGN AND EVALUATION OF TAILINGS DAMS August 1994 U.S. Environmental Protection Agency Office of Solid Waste Design and Evaluation of Tailings Dams DISCLAIMER AND

Study of the Microstructure Characteristics of Three Different Fine-grained Tailings Sand …

 · 2.1. Test Tailings Sand Material All of the tailings sand materials used in the tests were sampled from Fujian''s Makeng iron tailings pond. The gradation curve is shown in Figure 1 gure 1 shows that the fine grain content, with grain sizes less than 0.075 mm, is between 15% and 50%, and this material is referred to as silty sand (SM).

Effect of Replacing Sand by Iron Ore Tailings on the Compressive …

reaction (ASR) of iron ore tailings sand using rapid mortar bar method (GB/T 14684-2001). The replacement of cement by 30% fly ash (FA), 50% ground granulated blast-furnace slag (GGBFS), 10% metakaolin (MK) and replacement of sand by 15% ground iron

Liquefaction potential of sand tailings dams evaluated using a …

sand tailings due to significant rainfall events and poor control of the slimes in the storage area. During the past 40 years, Chilean standards (Supreme DecreeDS Nº 96 of 1970 and DS Nº 248 of 2007), which govern engineering practice, proposed an

Mechanical Properties of Tailings: Basic Description of a …

 · The coarser tailings samples (K1-K3 and AK1) classified as sand or silty sand were classified non-susceptible, and measured frost heave amounts were low <1.0 mm (after 96 h).

CHAPTER VIII CLOSURE AND RECLAMATION

do tailings sand beaches. However, tailings facilities typically present several challenges for closure and reclamation: Sand dams, comprised of fine sand and silt tailings, are highly erodible. Even when capped and revegetated, gullies can penetrate the cover

Ageing deformation of tailings dams in seasonally frozen soil areas under …

 · The slope of a tailings dam in a seasonally frozen soil area is affected by natural freezing and thawing, which damages the structure of the tailings sand and decays the mechanical properties 1,2 ...

13 Applications of Tailings and Waste Rocks | Fote Machinery

 · Today, Fote Heavy Machinery will share with you the 13 applications and usages of waste rocks and tailings. 1. Sand and gravel aggregate. Sand aggregate is one of the resource-consuming, fundamental, indispensable, and irreplaceable materials for the construction of infrastructure projects such as buildings, roads, and bridges.

MANAGEMENT OF TAILINGS: PAST, PRESENT AND FUTURE

Most tailings can be thickened mechanically, some to a paste or filter cake consistency. However, clay mineral-rich tailings, such as coal tailings, mineral sands tailings, tailings from some oxide ores, and residue from the processing of bauxite, nickel laterite

Geotechnical Properties of Mine Tailings | Journal of Materials …

in which p 0 = 1 kPa; e 0 = initial void ratio corresponding to p 0; and C c = compression index. The fitting results of the four tailings are summarized in Table 2.The compression index (C c) is 0.046 and 0.260 for the coarse and fine iron tailings, and 0.025 and 0.085 for the coarse and fine copper tailings. ...

Experimental study to improve the mechanical properties of iron tailings sand …

 · The iron tailings sand used in this study was taken from the tailing pond of Fujian Makeng Mining Co., Ltd., located in Chenkeng Valley, Qilai Village, Caoxi Street, Longyan, Fujian, China.According to the Specification of Soil Test (SL237—1999), we determined the basic physical characteristics of the iron tailings sand by tests, such as the particle size distribution, …

Geotechnical Properties of Mine Tailings | Request PDF

 · Dean et al. (2017) investigated the geotechnical properties of untreated, polymer-amended, and sand-mixed TSRU tailings to inform for the consideration of sub-aerial deposition and increase the ...

12 uses of mine waste rock and tailings

For the use of mine waste rock and tailings, many people know that they can be used to produce recycled sand and gravel aggregate, but they don''t know much about other uses. Today, Fodamon engineer will share 13 uses of mine waste rock and tailings. (1) Sand aggregate. Gravel aggregate is the largest, indispensable and irreplaceable basic ...