Iron ore tailings and coal gangue powder are the main sources of industrial solid wastes, the dispose of which has become severe and urgent with the increasing demand of environmental harmony.
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Based on the background that large amount of iron ore tailings are stockpiled in China, the utilization of iron ore tailings to prepare sintering brick was studied. The …
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The present paper discusses the preparation of eco-friendly bricks using fine-grained low-silica iron ore tailings and a non-cement curing agent system as the primary raw materials, and a ...
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A technology for iron ore tailings and steam curing bricks, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of high cost, secondary pollution of recycled iron ore concentrate, and large amount of cement for building materials. and other problems, to achieve the effect of low cost, …
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1 Chapter Geopolymer Bricks Using Iron Ore Tailings, Slag Sand, Ground Granular Blast Furnace Slag and Fly Ash Raghunandan Kumar, Pranab Das, M. Beulah and H.R. Arjun Abstract World is pound with million tonnes of industrial wastes such as ground granu- lated blast furnace slag (GGBS), flyash and mine tailings as a various industrial waste. The …
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In order to comprehensively utilize iron ore tailings (IOTs), the possibility of using IOTs as raw materials for the preparation of cementitious composites (IOTCCs) was investigated, and IOTCC was ...
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Mixing iron ore tailings with clay for manufacturing bricks was investigated with the objective of converting the hazardous solid waste into useful products. Blocks were prepared using different ...
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Preparation procedure of composite sintered brick by iron ore tailing, coal gangue powder, sewage sludge and shale. To remove the water content, the brick body was dried at room temperature (20 ± 5) °C for 48 h and then put it in the oven at 105 °C for 24 h. Afterwards, it was sintered in a SX212-16A high temperature gradient muffle …
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Iron tailings are the waste of iron ore after crushing, grinding and beneficiation, which is the largest amount of industrial solid waste stockpiled and generated, hazardous to ecological environment and difficult to use (Meng et al. 2010).According to the statistics, for every 1 ton of iron ore output, there is a total of 1 ton of iron ore tailings.
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Research highlights Offer a new raw material for building industry and a more effective resource recovery alternative. Make fired bricks using a kind of high iron and low silica hematite tailings as main raw materials. The produced tailing bricks were well conformed to Chinese Fired Common Bricks Standard (GB/T5101-2003). The research …
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The present paper discusses the preparation of eco-friendly bricks using fine-grained low-silica iron ore tailings and a non-cement curing agent system as the …
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The preparation of permeable bricks using gangue and tailings may provide a promising way to reuse mine solid wastes, considering the advantages in both economic and environmental aspects. ... Technical and environmental assessment of the incorporation of iron ore tailings in construction clay bricks. Construction and Building …
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Iron ore tailings (IOTs) are a typical industrial solid waste made up of oxides or clay silicate minerals such as quartz, feldspar, pyroxene, hornblende, etc. [12].By 2018, the stockpile of ...
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For preparation of the blocks, ... this study proposes the utilization of mining waste iron ore tailing (IOT) in alkali-activated bricks. For this purpose, six different brick compositions were ...
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A technology for iron ore tailings and wall bricks, applied in solid waste management, building components, sustainable waste treatment, etc., can solve problems such as inactivity, and achieve the effects of improving utilization, high strength and low density
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Few researchers have tried to utilize Iron Ore Tailings (IOT) in the preparation of conventional fire burnt bricks [9,10]. However, preparation of burnt bricks is energy intensive, and hence, few ...
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Objective Iron ore tailings have increased dramatically in recent decades. The storage of the iron ore tailings has potential environmental and safety hazard. Therefore, it is urgent to use the tailings to produce valuable products. Objective The objective of the research is to treat the tailings by preparing the baking-free bricks.
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waste into wealth. Iron ore tailing may emerge as a sustainable supplement to clay, use of which in brick making is increasingly being restricted. The work also paves the way for a new strand of research. Keywords Iron ore tailings Waste management Recycling waste Bricks Clay Waste to wealth Sustainable construction materials K. Behera B. P. Bose
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The volume of tailings discharged worldwide from iron ore smelting processes (i.e., iron ore tailings) has increased dramatically in recent years, and the disposal of this waste poses a substantial ecological threat to soil, and surface and sub-surface water. This threat can be alleviated to a large extent by employing iron ore …
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This study focuses on autoclaving reaction activity of hornblende, biotite and albite, the influences of the compositional characteristics, ingredients and forming, autoclaving processes and the properties of autoclaved sand-lime brick from iron ore tailings and waste rock. The results are shown as follows: under autoclaving 12 h …
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A technology for iron ore tailings and autoclaved bricks, applied in solid waste management, building components, sustainable waste treatment, etc., can solve problems such as inactivity, and achieve the effects of improving utilization, low …
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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).
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The results show that the activation of iron ore tailings(IOT) can increase the specific surface area, improve the surface energy and activity, increase the degree of participation in hydration reaction, promote the formation of a large number of acicular ettringite and C-S-H gel, improve the pore structure of hydration products, and lead to …
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Through preparation of iron tailing bricks, the technical flow and production proportion was obtained. ... India is one of the major iron ore producer and exporter in the world. It was estimated ...
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The current study aims to establish low-cost green engineered cementitious composites (ECC) using gold tailings, unoiled PVA fiber and large-volume fly ash. Through compression test, four-point bending test, direct tensile test, matrix fracture toughness test and single-crack tensile test, the mechanical properties of ECC were explored. It is …
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The iron ore tailings were from Beijing and its mineralogic phases were identified by XRD, as shown in Fig. 1. Table 1 shows that the amount of SiO 2 in the iron ore tailings was approximately 68.96%, and the level of residual iron in the tailing, which was present in the form of magnetite, was approximately 5.2%. The iron ore tailings …
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Based on the analysis of the properties of iron tailings and the existing mature technology,condition test wsas conducted on the different ratio by using tailings of Qian'an iron ore concentration plant as the main raw material and adding lime,retarding agent,regulator.When the ratio of water:solid was 0.09,the ratio of iron …
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We report a type of high-magnesium and low-silicon iron ore tailings (IOT) utilized as a raw material replacing clay to produce cement clinkers by conventional sintering process.
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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.
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Based on the background that large amount of iron ore tailings are stockpiled in China, the utilization of iron ore tailings to prepare sintering brick was studied.
WhatsApp: +86 18221755073