This study investigates the time-dependent rheological behavior of cemented paste backfill (CPB) that contains alkali-activated slag (AAS) as a binder. Rheological measurements with the controlled shear strain method have been conducted on various AAS-CPB samples with different binder contents, silicate modulus (Ms: SiO2/Na2O molar ratio), fineness of slag and curing temperatures.
This experimental study presents the rheological properties and strength characteristics of cemented unclassified tailings backfill (CUTB). The particle size distribution and chemical properties of tailings from the Shizhuyuan lead-zinc mine were examined experimentally. A series of rheological properties and uniaxial compressive strength (UCS) tests were conducted to study the relations
Workability is a key performance criterion for mining cemented tailing backfill, which should be defined in terms of rheological parameters such as yield stress and plastic viscosity.
Equipment For Rheological Properties For Backfill In Mines. Workability is a key performance criterion for mining cemented tailing backfill which should be defined in terms of rheological parameters such as yield stress and plastic viscosity Cemented tailing backfill is basically composed of mill tailings Portland cement or blended cement with supplementary cement material fly ash and blast
The Selection and Application of Filling Material Based . High stress makes backfill body present the rheological properties in deep mine. This paper first uses RRTS ⅢA to carry on creep test of specimen in different proportion, according to ε t curves under different load levels to determine the specimen's long term strength, based on the exponential relationship of rock block and rock
Equipment For Rheological Properties For Backfill In . 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
1. Introduction. Mining industry not only provides a considerable amount of mineral resources security for economic development, but also induces many problems, such as producing a large number of underground cavities, solid waste, water and air pollution [, ].Cemented tailings backfill (CTB) has been applied in underground mines worldwide because it can use the tailings to backfill those
Key words: Backfilling operations, backfilling mixture, ash, plastifier addition, rheological properties and strength of filling. Lots of mines in Kazakhstan are carrying out or planning to carry out mining with hardening backfill mixtures (HBM); for instance, underground mines of
backfill pump equipment represents an enormous expenditure for a mine. Therefore, an increasing [12] and Chen et al. [13] have studied the application of foam slurry in mine backfill and have concluded that the backfill can meet the requirements. laboratory tests to study the effect of foam on the rheological properties of backfill
POSIVA OY Olkiluoto FI-27160 EURAJOKI, FINLAND Tel +358-2-8372 31 Fax +358-2-8372 3709 David A Dixon Paula Keto May 2009 Working Report 2008-56 Backfilling Techniques and Materials
backfill pump equipment represents an enormous expenditure for a mine. Therefore, an increasing [12] and Chen et al. [13] have studied the application of foam slurry in mine backfill and have concluded that the backfill can meet the requirements. laboratory tests to study the effect of foam on the rheological properties of backfill
Underground Mining with Backfill · PDF 文件 . Underground Mining with Backfill by Tony Grice Senior Mining Engineer Australian Mining Consultants L19/114 William Street, Melbourne, VIC 3000
Workability is a key performance criterion for mining cemented tailing backfill, which should be defined in terms of rheological parameters such as yield stress and plastic viscosity.
equipment for rheological properties for backfill in mines; gold mining mechine, gold ore mining equipment manufacturer, underground mine backfill 2, paste, and rock . the edumine online course underground mine backfill 2 introduction provides an introduction to mine backfill properties, mine equipment, mine automation . editor: laura white
Key words: Backfilling operations, backfilling mixture, ash, plastifier addition, rheological properties and strength of filling. Lots of mines in Kazakhstan are carrying out or planning to carry out mining with hardening backfill mixtures (HBM); for instance, underground mines of
1. Introduction. Mining industry not only provides a considerable amount of mineral resources security for economic development, but also induces many problems, such as producing a large number of underground cavities, solid waste, water and air pollution [, ].Cemented tailings backfill (CTB) has been applied in underground mines worldwide because it can use the tailings to backfill those
of the rheological properties of paste fill is the yield stress role in aspects of Backfill mining technology in mining to resolve the deep pressure, maintain the slope steady, control the
2.1 Mine backfill 4 2.2 Paste backfill 5 2.2.1 Supply of materials 5 2.2.2 Mix design 6 2.2.3 Production 9 2.2.4 Future challenges 10 2.3 Rheology 12 2.3.1 Rheological properties, concepts and models 12 2.4 Paste backfill rheology 18 2.4.1 Determinant factors 19 2.4.2 Yield Stress 21 2.4.3 Measurement methodologies 24
POSIVA OY Olkiluoto FI-27160 EURAJOKI, FINLAND Tel +358-2-8372 31 Fax +358-2-8372 3709 David A Dixon Paula Keto May 2009 Working Report 2008-56 Backfilling Techniques and Materials
probability of subsidence, methods to backfill the mine void with various types of materials have been developed. This U.S. Bureau of Mines report describes the available technologies for subsidence abatement and discusses their operation and application. The basis of these abatement methods is the replacement of the mined material with mine waste.
Maxon provides equipment for processing tailings from mining operation; paste treatment and backfill applications for underground hard rock mines; remediation of existing and closed mine tailing ponds; and tailing processing for coal fired power plants.
Jun 08, 2013· The article reviews backfilling complexes operating at Kazakhstan mines and describes laboratory and industrial tests of effect of cement-ash binder and plastifier combination on rheological properties and strength of filling masses.
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
Paterson & Cooke Mine Backfill Services Paterson & Cooke Paterson & Cooke is a recognised leader in the design and implementation of mine backfill systems and associated processes. Since its formation in 1991, Paterson & Cooke has consistently provided technologically advanced systems for projects located throughout the world.
Aug 30, 2020· 1. Introduction. With the improvement of safety and environmental requirements for the mining engineering, cemented paste backfill (CPB) technology gets more attention .The CPB consists of tailings, cementitious materials (e.g., cement, fly ash), additives (e.g., flocculants, pumping agents), and water .It is generally prepared at the ground, and then transported to the underground stope
equipment for rheological properties for backfill in mines; gold mining mechine, gold ore mining equipment manufacturer, underground mine backfill 2, paste, and rock . the edumine online course underground mine backfill 2 introduction provides an introduction to mine backfill properties, mine equipment, mine automation . editor: laura white
Underground Mining with Backfill · PDF 文件 . Underground Mining with Backfill by Tony Grice Senior Mining Engineer Australian Mining Consultants L19/114 William Street, Melbourne, VIC 3000
equipment (mixer, pumps, pipelines) are necessary. A potential other drawback might be, that hydraulic backfill brings additional water into the mine and construction of dams may be necessary to isolate the backfilled excavations and to avoid outflow. The properties of backfill are determined by the following parameters (Moser, 2016):
Jun 08, 2013· The article reviews backfilling complexes operating at Kazakhstan mines and describes laboratory and industrial tests of effect of cement-ash binder and plastifier combination on rheological properties and strength of filling masses.
Jul 30, 2020· The use of cemented paste backfill in underground mining is commonplace as a method for tailings disposal, rockmass confinement or minimising convergence between the hanging wall and foot wall of the operation. The application of a cemented paste fill can also enable greater extraction ratios within certain deposits, as ore that would ordinarily be left []
2.1 Mine backfill 4 2.2 Paste backfill 5 2.2.1 Supply of materials 5 2.2.2 Mix design 6 2.2.3 Production 9 2.2.4 Future challenges 10 2.3 Rheology 12 2.3.1 Rheological properties, concepts and models 12 2.4 Paste backfill rheology 18 2.4.1 Determinant factors 19 2.4.2 Yield Stress 21 2.4.3 Measurement methodologies 24
probability of subsidence, methods to backfill the mine void with various types of materials have been developed. This U.S. Bureau of Mines report describes the available technologies for subsidence abatement and discusses their operation and application. The basis of these abatement methods is the replacement of the mined material with mine waste.
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
mine were about 65–70 and 70 wt%, respectively, and the concen-trations of the coarse copper and fine copper tailings from the Bahuerachi copper mine were about 72 and 60 wt%. Test Methods A series of conventional laboratory experiments were carried out to investigate the mechanical properties of the tailings, including spe-
In addition, rheological property is believed to be a reliable factor for describing the backfill slurry pipeline transportation . Hence, this research aims at investigating the sedimentation property of the backfill material by conducting a series of rheological tests of the iron tailings backfill material with various mass concentrations.
Paste backfill is used in underground hard rock mines primarily to fill the vertical stopes where veins of precious metals are extracted. Rheology, the study of deformation and flow of matter is crucial to ensure the product reaches its destination thousands of meters underground.
Rheological properties, such as the yield stress, viscosity, and thixotropy, are related to the microstructure of cemented paste backfill (CPB). To highlight the relationship, two instruments were combined to measure the changes in the microstructure and the rheological properties of CPB simultaneously. In this way, the particle/agglomerate size distribution characterized by the focused
Cemented paste backfill (CPB) is widely used in backfilling underground mine voids. It consists of fine grained mine tailings with a small dosage of binder (~ 3–10%). Cement is the common binder, which is currently being used in most of the mines in North Queensland, Australia. In an effort to control backfilling costs, investigations are being
Paste backfill is used in underground hard rock mines primarily to fill the vertical stopes where veins of precious metals are extracted. Rheology, the study of deformation and flow of matter is crucial to ensure the product reaches its destination thousands of meters underground.
Underground Mining with Backfill · PDF 文件 . Underground Mining with Backfill by Tony Grice Senior Mining Engineer Australian Mining Consultants L19/114 William Street, Melbourne, VIC 3000
backfill beam allowing thinner sections of the beam to fail,more than like ly in bending [4]. Following this event a study was initiated between the National Institute for Occupational Safety and Health (NIOSH) Spokane Mining Research Division (SMRD) and the Hecla Mining Company to quantify the mechanical properties of the paste backfill.
probability of subsidence, methods to backfill the mine void with various types of materials have been developed. This U.S. Bureau of Mines report describes the available technologies for subsidence abatement and discusses their operation and application. The basis of these abatement methods is the replacement of the mined material with mine waste.
High stress makes backfill body present the rheological properties in deep mine. This paper first uses RRTS-ⅢA to carry on creep test of specimen in different proportion, according to ε-t curves under different load levels to determine the specimen’s long-term strength, based on the exponential relationship of rock block and rock body, the long-term compressive strength is derived
Cemented paste backfill (CPB) is widely used in backfilling underground mine voids. It consists of fine grained mine tailings with a small dosage of binder (~ 3–10%). Cement is the common binder, which is currently being used in most of the mines in North Queensland, Australia. In an effort to control backfilling costs, investigations are being
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
I joined Colorado School of Mine (CSM) at January, 2020 as a Postdoc-fellow. My current research focused on the fluid dynamics of drilling fluids. Specifically, I designed and built up a flow loop system to measure the rheological properties of drilling fluids. This rheological data can be used during horizontal directional drilling (HDD).
mine were about 65–70 and 70 wt%, respectively, and the concen-trations of the coarse copper and fine copper tailings from the Bahuerachi copper mine were about 72 and 60 wt%. Test Methods A series of conventional laboratory experiments were carried out to investigate the mechanical properties of the tailings, including spe-
We can provide advice on purchasing equipment and accessories, selecting and developing testing methods, and understanding, interpreting and communicating results. Consulting and Advice. Satisfied Clients From Across The Globe "We are very impressed with the rheological services offered by the Centre for Industrial Rheology.
Oct 25, 2019· Cemented paste backfill (CPB), a soft concrete-like material, is extensively used in underground mines worldwide for ground support and/or mine waste disposal. One of the most important ingredients in CPB is cement but it is expensive and can amount to 75% of the cost of the CPB.
By providing passive support for underground mining operations, companies can extract a greater proportion of the mine resource. By combining this customer value with minimizing the footprint of the mine’s tailings and increasing safety and stability of the underground workings, backfill is a competitive and valuable option in many scenarios.
distances underground. The rheological characterisation of paste backfill is a difficult and complex task, given the high number of variable factors. So far, no standard procedures and/or methods have been established for measuring the rheological properties of paste backfill, in particular the yield stress.
Mine backfill is defined as the material or materials used to fill the cavities created by mining so as to establish and retain safe working conditions, economically. Recently, mine backfill is employed in strategies to reduce surface environmental impacts.