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The concrete mix is designed as 1:1.62:3.25 (cement: sand: coarse aggregate) with a water-to-cement ratio (W/C) of 0.48. A total of six (6) mixes are developed by replacing 0%, 10%, 20%, …
The aim of this study is to investigate the utilization of the tailings taken from a chrome ore concentration plant in Eskisehir, Turkey as fine aggregate in ready-mixed concrete production.
Abstract One of the advantages of cement and the cement concrete industry in sustainability is the ability to utilize large amounts of industrial solid wastes such as fly ash and ground granulated blast furnace slag. Tailings are solid wastes of the ore beneficiation process in the extractive industry and are available in huge amounts in some countries.
Upgrading tailings as secondary raw materials for the ceramic industry. An upgrading of the mine tailings into secondary raw materials for the ceramics industry has been studied, e.g. as chemically bonded ceramics (Kinnunen et al., 2018), glass-ceramics utilizing sulphidic gold mine tailings (Shao et al., 2005) and Au–Cu tailings (Ye et al ...
When compared to reference concrete, the TS shown by the concrete with iron ore tailings aggregate improved by 4.8% with age . However, because of the greater fines …
The three-tailed slag mainly contains SiO 2, CaO, Al 2 O 3, etc., which can be used as Portland cement or concert to provide the required chemical components. And the phase analysis and appearance of the combination adopt gradient grinding technology, which makes it have a good application.. The composite micro-slag is composed of mixed grinding micro-slag …
Furthermore, as a crucial component of the cement industry, chemical additives are frequently employed to regulate the characteristics of cement. These additives consist of diverse functional groups and chemical constituents that engage in the hydration process of cement, resulting in modifications in the binding and cement-solidifying ...
Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then, slag-tailing concrete composite admixtures were prepared from …
A R T I C L E I N F O Keywords: Iron ore tailing Sludge Filler Cement paste Rheology Hydration Calorimetry Thermal analysis Compressive strength Physical indexes A B S T R A C T The present work ...
The physical and chemical properties of tailings used as fine aggregate in concrete directly affect the mechanical properties of concrete. The most important of them are …
As a result, the utilization of tailings in cement and concrete will be good for the environment both in the solid waste processing and materials using in the construction industry. Mineral ...
Furthermore, as a crucial component of the cement industry, chemical additives are frequently employed to regulate the characteristics of cement. These additives consist of …
The present study examines the mechanical behavior of compacted iron ore tailings (IOT)-binder blends for dry stacking purposes, highlighting the effect of the cement …
Adedayo and Onitiri (2001) carried out research on Tensile Properties of Iron Ore Tailings Filled Epoxy Composites. They stated that the 30 % volume content of 300 µm particle size of iron …
Ordinary Portland cement (OPC), as per Chinese Standard GB 175–20007, was used in this study. IOTs with three types of particle size distribution labeled by IOT-P1, IOT …
Tailings Powder as Cement Replacement Xiaoyan Huang 1 ; Ravi Ranade 2 ; and Victor C. Li, F.ASCE 3 Abstract: This paper reports the results of an initial attempt of using iron ore tailings (IOTs ...
The limited cementitious activity of steel slag (SS) powder restricts its large-scale utilization as a replacement material for Portland cement and even more so for inert iron ore tailings (IOT). The micro-IOT (MIOT) were utilized as additives to improve the compressive strength and hydration degree of a binary system containing SS and PC.
use of iron ore in cement industry | Crusher in Australia, Blast furnace slag iron ore processing plant in cement industry … Iron ore processing. Mining iron ore begins at ground level. Taconite is identified by diamond ... Go to Product Center. chrome ore tailings in cement industry, chrome ore tailings in cement industry Description ...
Gold ore tailings can be used as a siliceous raw material for cement production. • The cement phases are 3CaO·SiO 2, 2CaO·SiO 2, 3CaO·Al 2 O 3, and 4CaO·Al 2 O 3 ·Fe 2 O 3.. The hydration products are portlandite, calcium silicate hydrate, and ettringite. The optimum addition of gold ore tailings in cement production is 5 wt%.
Xiaoyan Huang is supported by a grant from the Chinese Scholarship Council as a visiting scholar at the University of Michigan. The authors would like to acknowledge Lafarge (cement), U.S. Silica (silica sand), W. R. Grace (HRWRA), Kuraray (PVA fiber), and Shouyun (iron ore tailings) for material supplies.
Iron ore tailings, a remnant of iron ore treating, are one such waste material that holds potential for sustainable applications in the construction industry. Activating industrial waste items like fly ash or slag results in GPC, a type of concrete that has developed as a more sustainable substitute for conventional Portland cement-based ...
Therefore, the filtered tailings used herein are termed 80/20 and were generated with moisture content values ranging from 12 to 18%. The grain size distribution of the 80/20 tailings used is highlighted in Fig. 1.Table 1 summarizes the main physical characteristics of the iron ore tailings. According to the Unified Soil Classification System (ASTM 2017a), 80/20 …
Iron ore tailings (IOTs) are byproducts of the iron mining industry that have gained significant attention in recent years due to their potential for comprehensive utilization. This study investigates how blending steel slag with IOTs (a siliceous raw material) instead of lime (a calcareous raw material) affects slurry ing properties, mechanical properties, and reaction …
River sand is becoming scarce and meeting the demand of fine aggregates in the construction industry is becoming a challenging task. In this investigation an attempt is made to utilize gold ore tailings as a partial substitute for river sand in producing concrete. River sand is replaced with 5%, 10%, 15%, 20% and 25% gold ore tailings and the resulting fine aggregates were …
The specific gravity of the mine tailings was between 2.7–4.29, and the particle size of mine tailings varied amongst cement sized, silt sized and sand sized particles . The water absorption was reported to be up to 7.15% [ 10 ] and pH values of the tailings were in near neutral or slightly alkaline region generally ranging between 6.69–10 ...
Feasibility Study of Developing Green ECC Using Iron Ore Tailings Powder as Cement Replacement July 2013 Journal of Materials in Civil Engineering 25(7):923-931
The preparation of iron ore tailings (IOTs) into supplementary cementitious materials (SCMs) is an effective approach to achieve value-added utilization of industrial solid waste. This study systematically investigates the hydration pattern and strength development of Portland cement systems with the incorporation of IOTs, steel slag (SS), granulated blast …
Iron ore tailings have been widely studied in recent years for blending in cementitious materials, ... Eco-efficient cements: potential economically viable solutions for a low-CO2 cement-based materials industry. Cement Concr Res, 114 (2018), pp. 2-26, 10.1016/j.cemconres.2018.03.015. View PDF View article View in Scopus Google Scholar
Standard sands (SS) and iron ore tailings sands (IOT) were used as the fine aggregates. The SS was produced by Xiamen ISO Standard Sand Co., Ltd. and the main quality indexes are listed in Table 2.It shows that the content of SiO 2 exceeds 98 % for the SS. The SS was dried by a drying oven (Subo, 101-00SB) at 105 °C for 24 h until reaching a constant weight.
DOI: 10.1016/j.jclepro.2020.122303 Corpus ID: 219738673; Approach to the management of gold ore tailings via its application in cement production @article{Wang2020ApproachTT, title={Approach to the management of gold ore tailings via its application in cement production}, author={Qiang Wang and Jingjing Li and Xiang-nan Zhu and Geng Yao and Peng Wu and Zhi …
