Synergising water and energy requirements to improve sustainability performance in mine tailings management

Adiansyah, Joni Safaat; John, Michele; Vink, Sue; Keir, Greg; Stokes, Jason R.

doi:10.1016/j.jclepro.2016.05.100

Cited by 22 publications

(10 citation statements)

References 26 publications

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“…On the other hand, the accumulation of large amounts of mining tailings, as a consequence of mining in Peru constitutes one of the main environmental problems in our region. Currently, there is not an adequate mining waste management system, therefore, it is important to propose new alternatives for the use of this waste [14][15][16]. In this sense, this work is very important for the environmental care of Peru.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Creep Parameters in Geopolymers Derived From Mining Industry Waste

Huamán-Mamani¹,

Gamarra-Delgado²,

Paredes-Paz³

et al. 2020

IJMMME

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Geopolymeric materials have recently been considered a revolutionary class of materials, due to the diversity of applications where they can be used, this derived from their good mechanical resistance, thermochemical stability and good fire resistance. From 1970 to the present, a notable increase has been observed in the number of scientific publications dealing with the synthesis and applications of geopolymeric materials with industrial application. Several publications have reported geopolymers as alternative materials to Portland cement, which will allow having a green construction industry in the coming years. The elaboration of geopolymeric materials is relatively simple, beginning with the identification of a source rich in amorphous aluminosilicates and a hardening compound (mainly alkaline in nature) which are properly mixed until a homogeneous and workable paste is obtained, then can harden at room temperature and acquire good mechanical resistance in a few hours. On the other hand, mining in Peru is one of the most important industries due to its contribution to the economic development of the country. However, mining is also one of the industries with the greatest negative impact on the environment, mainly due to the enormous amount of inorganic waste that it generates and which is currently accumulated without any prospect of recycling or reuse. Therefore, this research was conducted to elaborate concretes from mining tailings and to evaluate their mechanical behavior in creep (between 500 and 600 ºC). The results obtained allow us to propose the use of mining tailings for the elaboration of geopolymeric thermal barriers that work in conditions of intermediate temperatures, up to 600 ºC.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Creep Parameters in Geopolymers Derived From Mining Industry Waste

Huamán-Mamani¹,

Gamarra-Delgado²,

Paredes-Paz³

et al. 2020

IJMMME

View full text Add to dashboard Cite

show abstract

“…On the other hand, the accumulation of large amounts of mining tailings, as a consequence of mining in Peru, constitutes one of the main environmental problems in our region. Currently, there is not an adequate mining waste management system, therefore, it is important to consider new alternatives for the use of this waste [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Study and Comparison of the Thermomechanical Response of Geopolymeric and Conventional Concretes

Huamán-Mamani¹,

Gamarra-Delgado²,

Paredes-Paz³

et al. 2020

IJMMME

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Geopolymers are a class of inorganic synthetic materials that in recent years have received extensive interest of the scientific community, mainly due to the variety of applications in which they can be used. The synthesis of these materials is based on a chemical process called geopolymerization, which consists of the alkaline activation of amorphous alumina and silica oxides present in many natural raw materials and industrial solid waste. Therefore, the present work proposes the use of inorganic mining residues (mine tailings) from gold mining in the southern region of Peru, for the manufacture of geopolymeric concrete. The first part of the research focused on the physical, structural and microstructural characterization of the raw material (fine sand and mining tailings), then the volumetric matrix of mixtures for five types of geopolymer concrete was determined. Cylindrical samples of 20 mm diameter and 40 mm high geopolymeric concrete were manufactured, at the same time conventional Portland cement concrete was manufactured for comparison purposes. All materials were mechanically characterized by uniaxial compression tests at variable temperatures (from room temperature to 600 ºC), and they were also microstructurally characterized before and after mechanical tests. The main microstructural mechanisms responsible for the fracture and plastic deformation of geopolymeric and conventional Portland cement concretes have been determined.

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“…Environmental and economic perspectives should also be considered in the assessment [3]. This framework will be able to guide the mining sector to choose its mine tailings management strategy based on sustainable development concepts [1].…”

Section: Introductionmentioning

confidence: 99%

“…This framework will be able to guide the mining sector to choose its mine tailings management strategy based on sustainable development concepts [1]. Examining the trade-off between water and energy use in tailings management is a good start in improving both the efficiency and sustainability performance of mine tailings management [3]. When designing hydrotransport systems, the issues of solids concentration in a hydraulic fluid-flow must be solved, which will result in the lowest possible energy consumption [2].…”

Section: Introductionmentioning

confidence: 99%

The non-linear regression - the Levenberg-Marquardt algorithm for assumption the energy losses of hydraulic transport in a case of the mine "Trepca"

et al. 2019

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The main problem of hydraulic transport is the resistance generated during the mixture transport through the pipeline. Testing the flow characteristics of mixtures, shown in this paper, are based on the principles of determining the unit energy losses by a mathematical calculation using the non-linear regression-the Levenberg-Marquardt algorithm. Such obtained results allow determining a transport rate in the horizontal pipeline , depending on the mixture bulk density and pipeline diameter. The flotation tailings is mainly used as a filling material in the mine "Trepca"-Stari Trg. According to the grain size distribution, it is a finegrained material of a size of 0.074 mm to 1.2 mm. It is a multicomponent material containing pyrite, pyrrhotine and other heavy metals, and therefore, has a high bulk mass. The average rate of the hydromixture, in which the energy losses reach the minimum value, depends on the pipeline diameter and kinetic bulk density of the mixture. For the test interval of change in the pipeline diameter, shown in this paper (0.168 mm, 0.176 mm, 0.193 mm, and 0.225 mm), and kinetic bulk density of the hydraulic mixture (1-1.6 kg/m 3), this rate ranges from 3-5.5 m/s. The increase of the energy losses in the hydraulic mixture transport increases proportionality with the increase of its kinetic bulk density. The results, presented in this paper, show that the required bulk density of 1.6 kg/m 3 should be accepted as a limit from a point of view of the hydraulic transport cost-efficiency.

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Synergising water and energy requirements to improve sustainability performance in mine tailings management

Cited by 22 publications

References 26 publications

Evaluation of Creep Parameters in Geopolymers Derived From Mining Industry Waste

Evaluation of Creep Parameters in Geopolymers Derived From Mining Industry Waste

Study and Comparison of the Thermomechanical Response of Geopolymeric and Conventional Concretes

The non-linear regression - the Levenberg-Marquardt algorithm for assumption the energy losses of hydraulic transport in a case of the mine "Trepca"

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