Status and prospects of research on the rheology of paste backfill
Cemented paste backfill (CPB) technology is a significant approach for the development of green mining in metal mines and can provide safe, environmentally friendly, and efficient technical support for deep underground mining.We developed a rheometer for high-concentration coal gangue backfill slurry (HCGS rheometer) based on the coal gangue-fly Experimental Study and Application of
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Status and prospects of researches on rheology of paste backfill
The cemented paste backfill (CPB) technology provides a safe, green and efficient access to deep underground mining and sustainable exploitation of mineral Backfilling of mined-out areas is a fundamental component of many underground mining operations. The backfill material supports the surrounding rock mass, reduces wasteful dilution, enables a safe Minerals Special Issue : Backfilling Materials for
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Rheological properties and resistance evolution of cemented
The coarse aggregate filling can effectively reduce the discharge of the solid mine waste, which is conducive to the realization of safe, clean, and efficient mining Backfill coal mining techniques are developed in China to control strata and surface subsidence. Backfill mining techniques can effectively improve recovery rates and mine safety [ 43, 44, 45 ]. Backfill Properties and Application of Backfill Materials in
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Rheological properties of cemented paste backfill with nano
With the continuous development of mineral admixtures and additives, the influence of various factors on the rheological properties of cement-based slurry remains To our best knowledge, there are no thorough studies addressing the effect of mineral admixture types and dosages on the rheological and strength properties of Rheological and mechanical properties of cemented foam backfill
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Progress and prospects of mining with backfill in metal
provide the necessary theoretical research value for filling mining. Keywords: mining with backfill; cementitious materials; mechanical characteristics; slurry properties; future perspectives 1. Introduction Presently, China’s metal mines are mainly in an under-ground mining mode, and the primary mining methods areUnderstanding the rheology behavior of non-Newtonian mine paste backfill is critical to ensure its flowability in the pipeline distribution system. Several rheology measurements methods for paste backfill have been proposed in the literature to quantify the rheology properties. However, there is no definite conclusion on the best Minerals Free Full-Text Evaluation of Rheology
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Minerals Special Issue : Backfilling Materials for
Cemented paste backfill (CPB) technology is widely used for environmental protection and underground goaf treatment. The influences of solid concentration, coarse aggregates dosage, and School of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China. 摘要: 膏体充填为矿产资源的深部开采及可持续发展提供了安全、绿色、高效的技术保障，已成为矿业领域的研究热点和发展趋势之一。. 全尾砂膏体流变学是膏体充填全套工艺流程全尾砂膏体流变学研究现状与展望（上）：概念、特性与模型
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Evaluation of time-dependent rheological properties of
strength of backfill while improving the mobility of CPB. However, the time-dependent rheological properties (especially static yield stress and thixotropy) of CPB containing superplasticizer have not been paid enough attention. Few studies [24, 37] have conducted on the evolution of the rheological properties of CPB containing With the increasing awareness of sustainable mining, the cement tailings backfill (CTB) method has been developed rapidly over the past decades. In the CTB technique, the two main mechanical properties engineers were concerned with are the rheological properties of CTB slurry and the resulting CTB strength after curing. Particle A Particle Size Distribution Model for Tailings in Mine Backfill
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Status and prospects of research on the rheology of paste backfill
Cemented paste backfill (CPB) technology is a significant approach for the development of green mining in metal mines and can provide safe, environmentally friendly, and efficient technical support for deep underground mining. As the theoretical basis of paste backfill, the rheological concepts, characteristics, and models of paste had been The mechanical strength properties of cemented tailings backfill are very important for the safe and environmentally friendly mining of mineral resources.Assessment of rheological and sedimentation characteristics of
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A systematic review of paste technology in metal mines for
Yang et al. (Peng et al., 2015) examined the rheological properties of paste slurries with the amount of the admixture through electron scanning microscopy and revealed the nature of the admixture optimizing the microstructure of the paste slurry to effectively improve the rheological properties, as illustrated in Fig. 10. Admixtures for 文章亮点. (1) 系统地研究了中国膏体搅拌技术及装备发展现状。. (2) 分析了搅拌对膏体充填性能的影响及其重要性。. (3) 探讨了膏体搅拌技术面临挑战及研究热点。. 工业发展离不开矿业的支撑，然而采矿不仅消耗了大量能源，且产生的尾矿对生态环境影响极大中国矿山膏体充填搅拌技术系统综述 USTB
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Systematic review of mixing technology for recycling
Request PDF Systematic review of mixing technology for recycling waste tailings as cemented paste backfill in mines of China The development of industry is inseparable from the support ofRequest PDF The rheological, mechanical and heavy metal leaching properties of cemented paste backfill under the influence of anionic polyacrylamide Anionic polyacrylamide (APAM) has widelyThe rheological, mechanical and heavy metal leaching properties
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Rheological properties of a multiscale granular system
The technology of cemented paste backfill (CPB) is an effective method for green mining. In CPB, mixing is a vital process aiming to prepare a paste that meets the non-stratification, non-segregation, and non-bleeding requirements. As a multiscale granular system, homogenization is one of the challenges in the paste-mixing process. Due to the Ultra-fine tailings cemented paste backfill (UCPB) exhibits special rheological characteristics with the effect of an ultrasonic sound field. In this study, in order to explore the thickeningRheological Properties of Ultra-Fine Tailings Cemented Paste Backfill
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Investigation on rheological properties of cemented pastefill
The smooth delivery of CPB from the surface backfill plant of the mine to the underground stopes is the first and most critical step in the backfilling process (Ouattara et al., 2017; Yin et al., 2012b). Flow ability is a crucial property of CPBs (Peng et al., 2019; Lang et al., 2015). The rheological properties of CPB with chloride-bearingMining is the foundation of modern industrial development. In the context of the “carbon peaking and carbon neutrality” era, countries have put forward the development strategy of “adhering to the harmonious coexistence of humans and nature.” The ongoing progress and improvement of filling mining technology have provided Progress and prospects of mining with backfill in metal mines
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Microstructure and mechanical behavior of cemented gold/tungsten mine
Superplasticizers are used in the preparation of cemented paste backfill (CPB) to improve its rheological properties. CPB produced from sulphide-bearing tailings can generate acid mine drainageCemented 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 Optimization of Parameters for Rheological Properties and
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Strain-time curves of test samples in multi-step loading
The higher the stress-strength ratio applied was, the higher the creep rate was, and the longer it took to the creep strain to stabilize. Fig. 6 shows the total axial strain-time curves of samplesIn modern mining, waste material is often backfilled into underground voids or open pits after the precious minerals are extracted. Such backfill practice has been well adopted in various mining methods, i.e. cut-and-fill (Henderson et al., 1998), sublevel opening stoping (Emad et al., 2015), and open pit mining (Lu et al., 2018).Backfill has Cemented paste backfill for mineral tailings management: Review and
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