Rheological properties of cemented paste backfill with

Nov 01, 2020· S. Haruna, M. FallTime and temperature-dependent rheological properties of cemented paste backfill that contains superplasticizer Powder Technol., 360 (2020), pp. 731-740 Article Download PDF View Record in Scopus Google Scholar

Rheological Properties of Cemented Paste Backfill with

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.

(PDF) Rheological Properties of Cemented Tailing Backfill

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

Mine Backfill Brochure Paterson Cooke. assessment, rheological and flow behaviour characterization and backfill recipe tool for predicting the dewatering and flow properties of the backfill product. the correct selection of equipment type and capacity crucial to the operability of the .. on a Budget; low capital paste backfill injection for small mines or brownfield.

equipment for rheological properties for backfill in mines

equipment for rheological properties for backfill in mines. Paste and Thickened Tailings Mining Technology With increasing focus on efficient water use by mines, we read more and more of paste tailings as a way to reduce water consumption.

equipment for rheological properties for backfill in mines

equipment for rheological properties for backfill in mines. Mine Backfill Brochure Paterson Cooke assessment, rheological and flow behaviour characterization and backfill recipe,tool for predicting the dewatering and flow properties of the backfill product,the correct selection of equipment type and capacity crucial to the operability of the,on a Budget; low capital paste backfill.

(PDF) Underground mining with backfills

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

Determining the Rheological Properties of Mine Tailings

Rheological measurements such as viscosity, elasticity, processability, temperature-related mechanical change, and the yield stress value of mining tailings can be extracted easily from a simple measurement using a rheometer. Those values can then be easily correlated with the pumpability of a specific tailing formulation with given solids mass

Contribution to Laboratorial Determination of Rheological

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

State-of-the-Art Techniques for Backfilling Abandoned Mine

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.

Rheological Properties of Cemented Paste Backfill with

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.

(PDF) Properties and Application of Backfill Materials in

to the physico-mechanical properties of backfill materials determining the backfill effects of goafs, UCB materials display distinctive rheological characteristics. of the mining equipment

Research of rheological characteristics of the mixture as

Nov 18, 2020· The transportation of a backfill mixture prepared on the basis of enrichment waste of water-soluble ores and an emergency stop of its movement were mo

Effects of Tailings Gradation on Rheological Properties of

The key technology in filling mining is the gravity transportation of high-density slurries, and the filling system design is a significant part of this technology. The filling effect depends on the fluidity of the filling slurry. To investigate the influence of the gradation of tailings on the rheological properties of the filling slurry, this study uses particle size analysis to prepare

[PDF] Experimental Study on Rheological Properties and

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

Backfilling technology in Kazakhstan mines, Journal of

Jun 08, 2013· Improvement rheological properties of backfill mixtures with added plastifier Pozzolith MR-55 has been confirmed in the Ridder-Sokol’sky Mine. It was found in lab conditions that yielding of such backfill mixture was higher by 20% and the filling mass strength was increased by 10–15% [14].

Advances in Underground Mine Backfill Hindawi

Mine backfill is a well-established and proven practice within the underground mining industry. The wide application of backfill technology in mining engineering helps to convert resource into reserve, reduce ore dilution, and improve underground working conditions.

Mine backfill tu-freiberg.de

Mine backfill Only for private and internal use! Updated: 02 November 2020 Page 3 of 16 be necessary to isolate the backfilled excavations and to avoid outflow. The properties of backfill are determined by the following parameters (Moser, 2016): Mineralogy of ingredients Grain size distribution Type and amount of binder

Contribution to Laboratorial Determination of Rheological

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

State-of-the-Art Techniques for Backfilling Abandoned

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.

Backfilling technology in Kazakhstan mines SpringerLink

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.

Paste Backfill Concrete Equipment Applications Maxon

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.

Backfill Cost Reduction: Designing Around Hydraulic

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 []

Sulfate-induced changes in rheological properties of fibre

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.

(PDF) Properties and Application of Backfill Materials in

to the physico-mechanical properties of backfill materials determining the backfill effects of goafs, UCB materials display distinctive rheological characteristics. of the mining equipment

[PDF] Experimental Study on Rheological Properties and

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

Mine backfill tu-freiberg.de

Mine backfill Only for private and internal use! Updated: 02 November 2020 Page 3 of 16 be necessary to isolate the backfilled excavations and to avoid outflow. The properties of backfill are determined by the following parameters (Moser, 2016): Mineralogy of ingredients Grain size distribution Type and amount of binder

The Selection and Application of Filling Material Based on

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

Mechanical Analysis of Roof Subsidence Based on

as the rheological model for the backfill materials based on their experimentally derived rheological properties. By regarding the roof as a thin elastic plate, a rheological mechanical model of the roof when using solid backfill mining was established.

Cemented paste backfill modification using different types

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

Rheology and Slurry Flow Mining SGS

Preparation of design criteria for metallurgical processes and equipment sizing; Rheology Testing with SGS. A thorough rheological understanding of any slurry system is needed because flow properties influence the economics of any continuous operation involving mineral, metallurgical and chemical process slurries. Our experts:

Backfilling technology in Kazakhstan mines SpringerLink

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.

State-of-the-Art Techniques for Backfilling Abandoned

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.

Backfilling in the underground mining industry

Mar 05, 2014· Backfilling in the underground mining industry 1. BACKFILLING IN THE UNDERGROUND MINING INDUSTRY. By Ray Brown. I have often been asked by people outside the mining industry what backfilling is and why it is necessary to the industry.

Validation of rational backfill technology for Sekisovskoe

Jan 13, 2016· The article gives geological characteristic of ore and enclosing rocks at Sekisovskoe gold deposit. The underground mining involves room-and-pillar and sublevel caving for medium thick ore bodies and shrinkage stoping for thin ore bodies. The use of the solidifying backfill technology is validated. Based on the laboratory research into rheological and strength properties of backfill

MOBILE BACKFILL PLANT FOR WAMBO PROVIDES COST

To assess the fill flow properties, rheological testing was material with earthworks equipment. In addition, the screening method was changed from MISU screening Outotec will deliver approximately 250,000m3 of mine backfill by Q4 of 2014 through more than 100 boreholes on the Wambo project. The boreholes, lined with 125mm

Experimental and Analytical Studies to Achieve an

May 01, 2016· The use of backfill in underground mines is increasing due to the need to achieve maximum ore recovery and to maintain the stability of underground excavations. The mechanical response of the backfill in narrow openings is significantly influenced by its interaction with the surrounding rock mass. This paper discusses the compressive strength required for cemented backfill used in mine

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

Rheology and Slurry Flow Mining SGS

Preparation of design criteria for metallurgical processes and equipment sizing; Rheology Testing with SGS. A thorough rheological understanding of any slurry system is needed because flow properties influence the economics of any continuous operation involving mineral, metallurgical and chemical process slurries. Our experts:

MasterRoc MF 308 Africa

MasterRoc MF 308 admixture is formulated to improve the rheological behavior and in-situ properties of placed backfill. MasterRoc MF 308 admixture offers superior stability by increasing resistance to segregation,while acting as a pumping aid and facilitating placement with significant improvement in the homogeneity of the placed fill.

The Selection and Application of Filling Material Based on

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

Validation of rational backfill technology for Sekisovskoe

Jan 13, 2016· The article gives geological characteristic of ore and enclosing rocks at Sekisovskoe gold deposit. The underground mining involves room-and-pillar and sublevel caving for medium thick ore bodies and shrinkage stoping for thin ore bodies. The use of the solidifying backfill technology is validated. Based on the laboratory research into rheological and strength properties of backfill

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

Edumine Underground Mine Backfill 1 Introduction

Oct 15, 2019· Underground Mine Backfill 1 Introduction is the first in a set of two Underground Mine Backfill courses. This course is intended as an introduction to mine backfill properties, types, uses, mining methods and system layout. Underground Mine Backfill 2 Slurry, Paste and Rock Fills reviews each backfill type and its preparation, distribution, stope preparation and placement practices as well

Experimental and Analytical Studies to Achieve an

May 01, 2016· The use of backfill in underground mines is increasing due to the need to achieve maximum ore recovery and to maintain the stability of underground excavations. The mechanical response of the backfill in narrow openings is significantly influenced by its interaction with the surrounding rock mass. This paper discusses the compressive strength required for cemented backfill used in mine

Performance of cemented coal gangue backfill

strength of backfill with suggested dosage is not less than 0.7 MPa. 4 Evaluation of rheological properties of slurry with suggested dosage Rheological properties of slurry with suggested dosage, such as slump, diffusibility and denseness are listed in Table 6. The slurry is proved to be perfect in

Major Mines & Projects Bolanitos Mine

Mine development headings are drilled by jumbo and by jackleg. Traditionally a conventional bottom-up cut and fill mining method was employed with waste rock brought in using diesel or electric loaders. The rock used to backfill the stopes is either dropped down a bore hole from surface or is generated from the waste development underground.

physical properties of rock phosphate

equipment for rheological properties for backfill in mines; material properties of angle grinding machine; crusher sand properties; properties of talc according to mohs hardness scale; hematite physical properties; construction sand properties; physical features of india; mechanical properties of soil; physical and physico chemical method in

Paste Backfill MiningInfo

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

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].

The Sarjeant Co. LTD Paste Fill

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.

Mine Backfill MiningInfo

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.