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Rheological Properties of Tailings Materials - written by Aditi Sharma, Pratik Goel published on 2022/07/16 download full article with reference data and citations ... transferred, deposited, and compacted while preventing blockage or failing of cemented tailing backfill conduits. The mining sectors are the world's major garbage generators ...
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Therefore, some experts and scholars had in-depth studied rheological properties of CGB, which had promoted the development of the backfill mining to some extent. For …
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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 …
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The purpose of this study is to investigate the optimum component ratios of rheological additives for rational use in CPB without increasing the cost of backfilling, to achieve a …
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Anionic polyacrylamide (APAM) has widely been employed in backfill mining to accelerate the sedimentation of fine tailings particles and increase the concentration of tailings slurry. ... Although the rheological properties of CPB have been extensively studied, the influences of cement/tailings ratio, APAM additive ratio, and hydrates on the ...
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Description. 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. Due to the complex structures and various properties of backfill ...
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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 …
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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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The backfill mining method is commonly employed in the mineral resources exploitation for nonferrous and precious metals. Due to the increasing mining depth, more and more iron mines have started to use the backfill mining method for safety causes [1-3]. ... 2.2. Testing Method. A Brookfield R/S + rheometer was used to measure rheological ...
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it is generally accepted that the rheological behavior of cemented tailing backfill can be approximated using the bingham model [ 12 ], which …
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From the perspective of resource recovery and environmental protection, coal gangue-fly ash cemented backfill coal mining has become an important direction for the green development of coal mines in recent years. Analysis of the rheological parameters of backfill slurry is the basic principle to design a backfill pipeline system. Coal gangue-fly ash backfill …
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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 …
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The rheological property influences the stability and size of bubbles in fresh CFB, which subsequently determines the pore structure and mechanical property of hardened CFB. ... To realize low-cost green backfill mining, this paper proposes a novel model of aeolian sand-cement-modified gasification slag-paste backfill (ACGPB). This model ...
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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
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A contribution to understanding the effects of temperature on the mechanical properties of cemented mine backfill Eng. Geol., 14 ( 3–4 ) ( 2010 ), pp. 397 - 413 Article Download PDF View Record in Scopus Google Scholar
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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 ...
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Actually, backfilling is get-ting imperative for mines due to the trends in mining to mine deeper, enhance ore and water recoveries, rise mining cycle and production, and …
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failure of CPB structure in the mine stopes due to inappropriate mechanical strength may cause casualties to the mine workers as well as significant environmental and economic damages. Many researchers studied the rheological properties and/or strength development of CPB under the individual effect of any of the aforementioned factors.
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Pipeline transportation is the key component of the mine filling system. In this study, fresh cement tailing backfill (CTB) slurry made by unclassified tailings from the Daye iron mine is taken as the research object, …
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Rheological properties of mine backfill slurry Strength characteristics and testing methods of mine backfill Stress distribution and evaluation of backfill in mine stopes Strength requirement calculations and design for mine backfill Recipe optimisation for …
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Cemented paste backfill (CPB) has been one of the best practical approaches for tailings management and underground goaf treatment. Paste rheology is a science to study the flow and deformation behaviors of paste or filling body under the effects of stress, strain, temperature, and time during the CPB process. The goal of studying paste rheology is to solve …
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Anionic polyacrylamide (APAM) has widely been employed in backfill mining to accelerate the sedimentation of fine tailings particles and increase the concentration of tailings slurry. However, APAM inevitably remains in thickened tailings, leading to a nonnegligible influence on the rheological, mechanical, and heavy metal leaching properties ...
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Cemented paste backfill (CPB) has been one of the best practical approaches for tailings management and underground goaf treatment. Paste rheology is a science to study the flow and deformation behaviors of paste or filling body under the effects of stress, strain, temperature, and time during the CPB process. The goal of studying paste rheology is to solve the engineering …
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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 …
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Cemented paste backfill (CPB) has become a significant structural material in most mines across the world. In this study, the effects of chemical rheological additives including viscosity modifying agent (i.e., polyacrylamide) and polycarboxylate superplasticizer (PCE) on fresh and hardened properties of CPB with different water-to-solid (W/S) ratios and water-to …
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The addition of superabsorbent polymers (SAP) to cemented paste backfill (CPB) made from tailings slurries may offer a good alternative to the dewatering components of the conventional CPB production owing to their highwater absorption and retention capacities. ... an experimental program was implemented to characterize the rheological behavior ...
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which cemented tailing backfill can be mixed, carried, laid, and compacted while preventing blockage or malfunction of pipelines delivering cemented tailing backfill is critical. Many researches have looked at the rheological behaviour of cemented tailing backfill in terms of consistency, flowability, and workability.
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Cemented paste backfill (CPB) technology is widely used for environmental protection and underground goaf treatment. The influences of solid concentration, coarse aggregates dosage, and cement dosage on the rheological properties and compressive strength of CPB blended with coarse aggregates (CA-CPB) are investigated through three …
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Cemented paste backfill (CPB) has become a significant structural material in most mines across the world. In this study, the effects of chemical rheological additives including viscosity modifying agent (i.e., polyacrylamide) and polycarboxylate superplasticizer (PCE) on fresh and hardened properties of CPB with different water-to-solid (W/S) ratios and water-to-cement …
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2.1.1. Tested Tailings . Tested tailing materials were obtained from an iron mine located in the northeastern region of China. Mill tailings are main ingredients of cemented tailing backfill, and physical properties (e.g., bulk density, specific gravity, porosity, the specific surface area, and the particle size distribution) and the chemical composition play key roles in the …
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This book investigates the rheology of paste in metal mines, which is beneficial for cemented paste backfill (CPB) technology. This book establishes a theory frame of paste rheology, including measurement of the rheological properties of paste, rheological behavior of full tailings in deep thickening, rheological behavior of paste in the mixing process, rheological …
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Cemented paste backfill (CPB) has been one of the best practical approaches for tailings management and underground goaf treatment. Paste rheology is a science to study …
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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.
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