the construction of iron ore tailings disposal sites, which will increase the production cost of iron ore dressing plants (Das et al., 2000; Zhang et al., 2006; Giri et al., 2011; Zhao et al., 2014). In order to alleviate environmental pressures and attain sustainability, one feasible solution is to reuse iron ore tailings as secondary resources.
Abstract: Utilisation of iron ore tailings in bricks as a replacement for sand will help in sustainable and greener development. The literature shows the potential use of iron ore tailings as a replacement of natural fine aggregates. As natural sand reserves are depleting day by day, there is a need for substitution for sand in bricks.
Abstract. The cement industry has for some time been seeking alternative raw material for the Portland cement clinker production. The aim of this research was to investigate the possibility of utilizing iron ore tailings (IOT) to replace clay as alumina-silicate raw material for the production of .
Mortars for laying and coating produced with iron ore tailings from tailing dams Wanna Carvalho Fontesa, Júlia Castro Mendesa,⇑, Sidney Nicodemos Da Silvab, Ricardo André Fiorotti Peixotoa a Laboratory of Materials for Civil Construction, Federal University of Ouro Preto, Ouro Preto CEP 35400-000, Brazil bMaterials Engineering Department, Federal Centre of Technological Education of Minas ...
Increasing iron ore demand, coupled with the depletion of high-grade hematite ores in the United States, after World War II led to development of lower-grade iron ore sources, principally the utilization of magnetite and taconite. Iron-ore mining methods vary by the type of ore being mined.
Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore. Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.
Paste thickeners thicken tailings to higher underflow solids concentrations than conventional and high-rate thickeners. For example, a tailings stream in an iron ore application could be thickened to 45–50% solids Newtonian slurry in conventional or high-rate thickeners.
This paper studies the technological feasibility of using iron ore tailings as additives in cement pavers for the optimization of the mechanical properties and color modulation.Thus, to study the physical, chemical, optical and morphological properties of the tailings, they were characterized for the composition, mineralogy and granulometry. To optimize the procedure of preparing iron ore ...
Increasing iron ore demand, coupled with the depletion of high-grade hematite ores in the United States, after World War II led to development of lower-grade iron ore sources, principally the utilization of magnetite and taconite. Iron-ore mining methods vary by the type of ore being mined.
TENORM: Copper Mining and Production Wastes . ... One layer is a waste containing iron and silica compounds and is discarded as slag slagByproduct left after a desired metal is thermally separated from its raw ore.. ... or pavement bases for highways. Some studies have shown that copper tailings can be used in bricks if pyrites are first removed.
2.1 Iron ore tailings. Two mine tailings were used as aggregates in this study, both from the mineral processing of iron ore in Minas Gerais state, Brazil. The first is obtained from jig concentrator devices, used to separate particles within the ore body, based on their specific gravity (relative density); it has particles between 9.0-0.3 mm.
Abstract: Iron ore tailing (IOT) is a waste product of Iron Ore after manufacture, the wastes are environmental unfriendly as it poses serious problem of disposal, but can be used as a replacement in concrete mixture. The aim of this research is to
In the background of little reuse and large stockpile for iron ore tailings, iron ore tailing from Chinese Tonghua were used as raw material to prepare cementitious materials.
ONUAGULUCHI, O., EREN, O. Copper tailings as a potential additive in concrete: consistency, strength and toxic metal immobilization properties. Indian Journal of Engineering & Materials Science, v. 19, p. 79-86, 2012b. [ Links ] PRAHALLADA M.C., SHANTHAPPA B.C. Use of copper ore tailings - as an excellent pozzolana in the preparation of concrete.
using iron ore tailings. Autoclaved sand–lime bricks from copper ore tailings were prepared by Fang et al. [22], which conformed to GB11945-1999 for MU 15 autoclaved bricks [23]. The design of the aggregate gradation is a key procedure in the preparation of autoclaved bricks [24].
Cited by: 4Mining involves the processing of mined ore to separate valuable minerals, leaving behind huge volumes of waste tailings. Driven by mining volumes, globally generated tailings are estimated to ...
This study presents a methodology for making bricks, in a cost-effective and environmentally friendly manner, using the tailings produced from iron ore mines in Western Australia (WA). The study was based on the geopolymerisation process, which is known to conserve energy by reducing the emission of greenhouse gases. The reduction is accomplished by avoiding the processes of high temperature ...
Abstract: 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 di erent points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then,
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Autor: Awning CleaningRecycling and Utilization of Mine Tailings as Construction Material through Geopolymerization Lianyang Zhang, Ph.D., P.E. Department of Civil Engineering and Engineering Mechanics University of Arizona, Tucson, Arizona U.S. EPA Hardrock Mining Conference 2012: Advancing Solutions for a New Legacy April 3-5, 2012, Denver, Colorado
Reuse of iron ore mineral wastes in civil engineering constructions: A case study. ... bricks from iron ore tailings were made (Jacobi, 1975). In India, some examples are manufacture of glass by utilizing the quartz and feldspar from waste produced in mica mines, ...
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