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Dr. Sandeep Panchal - Assistant Professor - Visvesvaraya ...
The use of cemented paste backfill (CPB ) material to ameliorate geotechnical stability of underground mine is in nascent stage in India. Rheological properties of CPB change with travelling time as it is transported to underground mine stope through pipeline reticulation.
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Temperature Effects on Rheological Properties of Fresh ...
Cemented paste backfill (CPB) is an economic and environmental friendly technique applied in underground mining for supporting surrounding rock and replacing the pillar. However, little is known about the temperature effects on CPB in mines having a large temperature fluctuation. The main purpose of this research was to investigate the effect of temperature change on the rheological properties ...
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A nonlinear rheological model of backfill material for ...
Backfill material is a specific type of concrete. Because of long-term work at mining sites, poor environments and long-term bearing pressure on roofs, backfill material shows important rheological properties in the retention of roadways,,, .The model assumes the rock under the coal is hard, the integrity of the basic and direct roofs are intact and strong.
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(PDF) Geotechnical properties of cemented paste backfill ...
Geotechnical properties of cemented paste backfill from Cannington Mine, Australia ... Based on the results obtained from the rheological properties of CPB slurry, it was found that at room ...
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Mechanical Analysis of Roof Subsidence Based on ...
Sažetak To study the influence of the rheological properties of backfill materials on strata movement during solid backfill mining, Poyting-Thomson model was selected as the rheological model for the backfill materials based on their experimentally derived rheological properties.
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CFD Simulation of Pipeline Transport Properties of Mine ...
laboratory tests to study the effect of on the rheological properties of backfill slurry. 2. Materials and Methods 2.1. Slurry Materials 2.1.1. Constituent Materials TFSB refers to a backfill material that is synthesized from an admixture , cement, water,
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Experimental and numerical study on rheological properties ...
Rheological property of ice-containing cemented paste backfill (ICPB) was studied. • Lab experiments and computational fluid dynamics (CFD) simulations were used. • The relation of rheological property to ice and solid contents was discussed. • The CFD results had .
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Mechanical Analysis of Roof Subsidence Based on ...
Figure 1 Basic principle of solid backfill mining . Therefore, based on rheological experiments, this paper established a rheological mechanical model for the coalmine roof when using solid backfill mining by considering the rheological properties of backfill materials. Then, .
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equipment for rheological properties for backfill in mines
The rheological property of the filling slurry is the cornerstone of pipe diameter selection and resistance calculation. Its research matters not only mining costs, but also the safety in production. In order to ensure the whole-tailings paste backfilling material of Shirengou iron mine can be achieved pipeline transportation, L-pipe experiment ...
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Backfill properties - QueensMineDesignWiki
It is common practice to mix backfill samples in the lab using tailings, sand, and/or rock samples, based on the mix design used at the mine site. The backfill is typically placed in 200mm x 100mm or 300mm x 150mm cylinders and cured at room temperature in humidity until ready for breaking.
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Influence of Particle Size on the Basic and Time-Dependent ...
Jun 26, 2018· The rheological properties of cemented paste backfill (CPB) significantly influence the material's transportability, and these properties are strongly affected by the material's particle size. This paper mainly focuses on the influence of particles size on the basic and time-dependent rheological behaviors of CPB.
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Equipment For Rheological Properties For Backfill In Mines
Equipment For Rheological Properties For Backfill In Mines As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.
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Time- and temperature-dependent rheological properties of ...
Time- and temperature-dependent rheological properties of cemented paste backfill that contains superplasticizer Author: Haruna, Sada, Fall, Mamadou Source: Powder technology 2020 v.360 pp. 731-740 ISSN: 0032-5910 Subject: ambient temperature, engineering, mine tailings, pH, powders, thermal analysis, viscosity, zeta potential Abstract:
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Determining the Rheological Properties of Mine Tailings
Tailings are currently used as backfill in underground mines, stored in open pits, dried and stacked, or pumped through pipelines into tailings ponds on site to allow the solid particles to separate from the water and settle on the bottom. ... Rheology Solutions defines these important rheological properties as follows: Yield stress: a measure ...
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UsingCoupledRheometer-FBRMtoStudyRheologicalProperties .
the mining engineer proposed to use the cemented paste backfill(CPB)technology,whichbackfillsthetailingswith a certain amount of cementitious material that usually accounts for 2–10% of the total weight [6, 7]. CPB tech-nology excels in tailings utilization and the strength of filling body and is widely used in metal mines and coal mines[8,9].
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Paste Backfill - MiningInfo - Google Sites
Increasingly, backfill is being used to achieve high ore extraction ratios in mining operations. For such operations, a structural fill having predictable strength properties is required. The strength of the final backfill product is a complex characteristic which is influenced by many parameters including pulp density, binder content, grain ...
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LABORATORY PERFORMANCE ASSESSMENT OF .
a set of empirical equations to design the initial installation parameters in terms of the physical and mechanical properties of the crushed salt as backfill material in potash mine openings. KEYWORDS: Crushed Salt, Backfill, Consolidation, Strength, Sealing 02 LABORATORY PERFORMANCE ASSESSMENT OF CONSOLIDATED 15-22dd 15 20/4/2558 20:53:37
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Mechanical Analysis of Roof Subsidence Based on ...
Sažetak To study the influence of the rheological properties of backfill materials on strata movement during solid backfill mining, Poyting-Thomson model was selected as the rheological model for the backfill materials based on their experimentally derived rheological properties.
learn moreIOP Conference Series: Earth and Environmental Science ...
backfill mining method. The rheological property of the filling slurry is the cornerstone of pipe diameter selection and resistance calculation. Its research matters not only mining costs, but also the safety in production. In order to ensure the whole-tailings paste backfilling material of Shirengou iron mine can be achieved pipeline
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Characterisation of tailings for paste backfill system ...
The focus of this work has been to investigate the status of backfill technology, in particular paste backfill, a relatively new technology. A rationale specifically for paste backfill system design has been developed. To date, a limited number of mines have implemented paste backfill systems. An extensive survey of backfill literature and a review of paste backfill operations in practice was ...
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Rheological properties of thickened tailings and cemented ...
affect the rheological properties of the material (Goudoulas et al. 2003, Huynh et al. 2006). Some authors have investigated the effect of different factors on tailings rheological parameters. Kwak et al. (2005) used vane geometry to determine the effect of water content on the rheological behaviour of mine tailings compared to
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Preparation and Mechanical Properties of Cemented Uranium ...
Only from the point of view of rheological properties, yield stress and average viscosity increase first and then decrease with the addition of quicklime, Na 2 O alkali equivalent, and modulus of activator. The results can provide an optimum reference for industrial application of cemented uranium tailings backfill based on the alkali-activated ...
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Equipment For Rheological Properties For Backfill In Mines
Equipment For Rheological Properties For Backfill In Mines. We are a large-scale manufacturer specializing in producing various mining machines including different types of sand and gravel equipment, milling equipment, mineral processing equipment and building materials equipment. And they are mainly used to crush coarse minerals like gold and ...
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2.2 Paste Flow Properties ... 2.4 Rheological Characterisation, Friction Losses and Pipeline Diameter ... In May 2003, a 200 000 t/y backfill system was commissioned at Boulby Mine. The backfill system uses the gravity head available (between 908 m to 1 100 m) to transport ...
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