Iron tailings Excitation powder

Cementitious activity optimization studies of iron tailings powder

2020年12月30日  The cementitious activity of iron tailings powder (ITP) as a concrete admixture is investigated and optimized in this study When the specific surface area (SSA) of ITP is in 2024年5月3日  We sought to investigate the impact of nonreactive solid waste coal gangue and iron ore tailings admixture on the physical properties of nonsintering ceramsite We designed Preparation and alkali excitation mechanism of coal gangueiron 2023年4月11日  To investigate the application of iron tailings in cementbased materials as fine aggregate and mineral admixture, six iron tailings sands were selected from different places of origin, and the methods of acid and alkali Effect of Iron Tailings as Fine Aggregate and Mineral 2017年5月3日  In order to distinguish the filling effect and volcanic activity and explore the ways motivating the activity of richsilicon iron ore tailing (IOT), inert quartz was brought in as the Volcanic activity and thermal excitation of richsilicon iron ore

The Role of Chemical Activation in Strengthening Iron

2024年4月1日  The preparation of iron ore tailings (IOTs) into supplementary cementitious materials (SCMs) is an effective approach to achieve valueadded utilization of industrial solid wasteAbstract: In order to distinguish the filling effect and volcanic activity and explore the ways motivating the activity of richsilicon iron ore tailing(IOT), inert quartz was brought in as the Volcanic Activity and Thermal Excitation of Richsilicon Iron Ore 2023年5月18日  Mechanical grinding not only reduces particle size of the iron tailings, but also increases their specific surface area Ultrafine iron tailings powder (ITP) may be advantageous in improving the properties of cement The Influence of Iron Tailings Powder on the Properties 2019年4月15日  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 Recovering Iron from Iron Ore Tailings and Preparing

The Role of Iron Tailing Powder in Ultra‐High‐Strength Concrete

2021年3月16日  Iron tailing powder (ITP) is considered to have the potential to replace cement to manufacture ultrahighperformance concrete (UHPC) However, the performance of UHPC 2024年1月8日  With the vigorous development of industrial economy, the production capacity and level have been significantly improved, but at the same time, a large amount of iron tailings, fly ash and a series of bulk solid waste materials have been accumulated These industrial wastes have caused serious impact on the ecological environment How to deal with them effectively Damage constitutive model of fly ash–cementitious iron tailings 2022年4月1日  To study the role of glass powder and iron ore tailings combination in concrete, The properties such compressive strength, flexural strength, tensile strength and also durability parameters likely Effect of Iron Ore Tailing and Glass Powder on 2021年1月1日  Some possible applications for iron ore tailings (PET) powder (from bottle recycling) and treated under an inert atmosphere of N 2 at 600 °C were used as heterogeneous catalysts for the Iron Ore Tailings: Characterization and Applications

Test research on hydration process of cementiron tailings powder

2022年2月1日  Iron tailings are a type of solid waste produced during the separation of valuable metals from iron ores [1]Iron tailings are the primary mine solid waste in China, with reserves of nearly 5 × 10 3 million tons and a steady annual growth rate of over 30 million tons [2]Generally, iron tailings are deposited in tailing dams, causing environmental problems and potential 2023年12月15日  Flexural behavior evaluation and energy dissipation mechanisms of modified iron tailings powder incorporating cement and fibers subjected to freezethaw NaOH, and aluminum powder on the mechanical properties of nonsintering ceramsite Finally, the alkali excitation mechanism was elucidated through Xray diffraction and SEM Coutilization of iron ore tailings and coal fly ash for porous 2023年4月11日  To investigate the application of iron tailings in cementbased materials as fine aggregate and mineral admixture, six iron tailings sands were selected from different places of origin, and the methods of acid and alkali activation were adopted to increase the activity of tailings powder The strength of mortar was evaluated and the composition and microstructure Effect of Iron Tailings as Fine Aggregate and Mineral Admixture 2017年5月3日  Development of Green Engineered Cementitious Composites Using Iron Ore Tailings as Aggregates[J] Construction and Building Materials, 2013, (44): 757–764 Article Google Scholar Chen MY, Li BX, Wang W, et al Reactive Activity of Iron Ore Tailings Powder and Its Enhancement Effect Upon Concrete[J]Volcanic activity and thermal excitation of richsilicon iron ore

Recovering Iron from Iron Ore Tailings and Preparing Concrete

2019年4月15日  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 preconcentration followed by direct reduction and magnetic separation Then, slagtailing concrete composite admixtures were prepared from 2024年9月13日  The utilization of solid waste has emerged as a critical factor in promoting green and sustainable development [12], [30], [49], [6]Among the various solid wastes generated in mineral processing, tailings represent a significant volume that can be categorized into different types, such as iron, copper, tin, antimony, brick powder, and fluorite tailings [16]Mechanical, alkali excitation, hydrothermal enhancement of 3D 2020年10月29日  1 Introduction Tailings are one of the largest solid wastes in the world, which are widely distributed all over the world Iron tailings are waste residue discharged from iron ore after beneficiation process, but there is still a lot of space for these solid wastes to be utilized [1, 2]The comprehensive utilization rate of tailings is not high, which is limited by the Research on Carbonation Characteristics and Frost Resistance of Iron 2023年12月1日  The disposal of Iron ore tailings Powder (IP) is the primary concern for numerous steel industries Similarly, natural zeolite, a significant byproduct of volcanic eruptions, pollutes the (PDF) Optimization Studies of Iron Ore Tailings Powder and

Mechanism of regulating the mechanical properties and paste

2023年7月1日  Highsilicon iron tailings are rich in aluminosilicate minerals, such as quartz and alkaline feldspar Mechanical grinding can distort the crystal structure on the surface of these minerals and form amorphous layers [11]Amorphous compounds containing silicon and aluminum can be hydrated and hardened in systems containing Ca 2+, SO 4 2−, and OH − to 2020年4月1日  Iron tailings powder (ITP) is a kind of solid waste, which pollutes the environment, without any treatment The application of ITP in cement concrete is a good choiceProperties of highvolume iron tailing powder concrete under 2020年5月23日  The abundance of mining activities continuously increases mine wastes/tailings that require storage/disposal It is well understood that the accumulation of tailings around mines, and consequently, their spreading in the environment could cause serious ecological hazards Reuse and recycling of mine tailing materials, in construction and earthwork applications (such Stabilization of iron ore tailings with cement and bentonite: a 2024年5月3日  Specifically, the effective utilization rate of inactive mine solid waste, including iron ore tailings and coal gangue, stands at a mere 20 % [40], [41] Therefore, utilizing large quantities of iron ore tailings and coal gangue as primary raw materials for nonsintering ceramsite production carries substantial environmental benefitsPreparation and alkali excitation mechanism of coal gangueiron

Hydration kinetics of cement–iron tailing powder composite

2023年3月17日  Siliceous iron tailings powder, a mineral admixture of cementbased materials, has been widely studied, among which the author's team has also done a lot of related research work [27–31], but so far there is less literature report on the influences of this mineral admixture on the ITZ properties, this study explores the ITZ properties of concrete mixed with siliceous 2022年1月1日  Experimental investigations on the mechanical behavior of iron tailings powder with compound admixture of cement and nanoclay Constr Build Mater, 254 (2020), Article View PDF View article View in Scopus Google Scholar [26] Influence of iron tailing powder on properties of concrete with fly 2017年4月1日  The results show that the activity of iron tailings changes unobviously after reaching a certain fineness; Iron tailings with lower activity primarily have physical filling effect under standard Volcanic activity and thermal excitation of richsilicon iron ore 2022年1月17日  The properties of blended cement containing 0%, 20%, and 50% iron tailing powder (ITP) at 20 °C and 60 °C were investigated by determining the hydration heat, microstructure, and compressive strength The addition of ITP decreases the exothermic rate and cumulative hydration heat of blended cement at 20 °C The high temperature increases the Properties of Blended Cement Containing Iron Tailing Powder at

Influence of Dolomite Rock Powder and Iron Tailings Powder on

Dolomite rock powder (the waste stone residue in the production of machinemade sand and stone processing) and iron tailings powder formed by mineral processing industry are solid wastes, which occupy land resources, pollute the environment and release toxic substances without reasonable processing The dolomite rock powder and iron tailings powder composing 2022年6月1日  The obtained raw iron tailings and clay were put into an oven with the constant temperature of 105 °C until a constant weight Then the particle size distribution of iron tailings could be obtained through sieves with different sizes, which is shown in Fig 2 The iron tailing powder passing the sieve of 2 mm was adopted in this studyFlexural behavior evaluation and energy dissipation mechanisms Download Citation On Apr 1, 2023, Juanhong Liu and others published Mechanism of regulating the mechanical properties and paste structure of supersulfated cement through ultrafine iron tailings Mechanism of regulating the mechanical properties and paste 2024年2月14日  Solid waste management is a critical issue worldwide Effectively utilizing these solid waste resources presents a viable solution This study focuses on Iron ore tailings (IOTs), a solid waste generated during iron ore processing, which can be used as supplementary cementitious materials (SCMs) but have low reactivity, hindering their largescale application Sustainable assessment and synergism of ceramic powder and

Preparation and alkali excitation mechanism of coal gangueiron

Firstly, a singlefactor test was conducted to determine the optimal dosage of coal gangue and iron ore tailings Subsequently, orthogonal tests were performed to investigate the influence of fly ash, NaOH, and aluminum powder on the mechanical properties of nonsintering ceramsite2021年6月7日  According to GB/T 31288–2014 [27] and YB/T 4561–2016 [28], there are three types of IOT: iron tailings powder, iron tailings super fine sand, iron tailings fine sand However, in most previous researches, IOT mainly covers three categories: (i) iron tailings rock, used as coarse aggregate, of particle size >475 mm, is produced by mechanical crushing lowgrade An evaluation of iron ore tailings characteristics and iron ore 2022年1月14日  Dolomite rock powder (the waste stone residue in the production of machinemade sand and stone processing) and iron tailings powder formed by mineral processing industry are solid wastes, which Influence of Dolomite Rock Powder and Iron Tailings Powder on Resource utilization of iron tailings powder is an effective measure to reduce the dambreak risk of an iron tailings reservoir Adding polypropylene fiber to iron tailings powder can improve its shear performance Direct shear tests were carried out on reinforced iron tailings powder with polypropylene fiber with dosages of 0%, 025%, 05%, 075%, and 1%, respectively The Investigation on Direct Shear and Energy Dissipation MDPI

(PDF) Effect of Iron Tailings and Slag Powders on Workability and

2021年7月1日  The addition of tailings powder improves the working performance of concrete and slightly improves the strength Due to the large amount of cement used in ultrahighperformance concrete, physical 2024年3月29日  （2）Iron tailings powder: iron tailings are taken from a tailings reservoir in Hebei Province, China, its main chemical components are shown in Table 3, and the phase analysis is presented in Fig 1The planetary ball mill (XQM4) was used to grind the iron tailings, the mill speed was set to 360 r/min, the grading of the grinding ball was Φ5 mm:Φ8 mm:Φ10 Effects of siliceous iron tailings powder on performances of 2020年9月15日  In their research on the mechanical activation of iron ore tailings, Yunhong et al (2016) showed that mechanical crushing reduced particles size, altered chemical and physical properties, increased specific surface area, and increased reactivity of iron tailings powders; mechanically activated iron ore tailings were useable as a premium material in cement A review on different methods of activating tailings to improve 2012年9月1日  Feasibility Study of Developing Green ECC Using Iron Ore Tailings Powder as Cement Replacement Authors: Xiaoyan Huang [ protected], Ravi Ranade [ protected], and Victor C Li [ protected] Author Affiliations Publication: Journal of Materials in Feasibility Study of Developing Green ECC Using Iron Ore Tailings

Earlyage hydration characteristics of composite binder containing iron

2017年6月15日  Iron tailings were also used for the production of fired brick [18] and in combination with fly ash to produce geopolymers [19], [20] To determine the hydration heat characteristics of the iron tailing powder, iron tailing powder paste was prepared by mixing fine iron tailing powder with NaOH solution 2023年5月18日  Iron tailings powder (ITP) is a kind of solid waste, which pollutes the environment, without any treatment The application of ITP in cement concrete is a good choice In this study, the influence of ITP on the flowability, The Influence of Iron Tailings Powder on the 2013年7月1日  Feasibility Study of Developing Green ECC Using Iron Ore Tailings Powder as Cement Replacement July 2013 Journal of Materials in Civil Engineering 25(7):923931Feasibility Study of Developing Green ECC Using Iron Ore Tailings DOI: 101016/jjobe2024 Corpus ID: ; Properties of UltraHigh Performance Concrete incorporating iron tailings powder and iron tailings sand @article{Shi2024PropertiesOU, title={Properties of UltraHigh Performance Concrete incorporating iron tailings powder and iron tailings sand}, author={Jun Shi and Wuzhi Pan and Jiayuan Kang and Zhenyun Yu and Guorui Properties of UltraHigh Performance Concrete incorporating iron

An evaluation of iron ore tailings characteristics and iron ore

2021年6月7日  According to GB/T 31288–2014 [27] and YB/T 4561–2016 [28], there are three types of IOT: iron tailings powder, iron tailings super fine sand, iron tailings fine sand However, in most previous researches, IOT mainly covers three categories: (i) iron tailings rock, used as coarse aggregate, of particle size >475 mm, is produced by mechanical crushing lowgrade DOI: 1032604/jrm2021 ARTICLE Different Effects of Wet and Dry Grinding on the Activation of Iron Ore Tailings Yingchun Yang 1, *, Liqing Chen 1 and Yuguang Mao 2 1 College of Engineering, Anhui Agricultural University, Hefei, , China 2 College of Civil Engineering, Hunan University, Changsha, , China * Corresponding Author: Yingchun Yang : Different Effects of Wet and Dry Grinding on the Activation of Iron Request PDF On Apr 1, 2023, Yannian Zhang and others published Utilization of iron ore tailings with high volume in green concrete Find, read and cite all the research you need on ResearchGateUtilization of iron ore tailings with high volume in green concrete2023年8月1日  In order to study the deformation resistance of fibrereinforced alkali activated slagfly ash geopolymer agglutinated iron tailings filling materials, the mechanical properties test, scanning electron microscope (SEM) and Xray diffraction (XRD) microscopic test are performed using the macromicro crossscale method Then, the evolution law of mechanical behaviour Mechanical properties and interface microscopic characterisation

The Role of Iron Tailing Powder in Ultra‐High‐Strength Concrete

2021年3月16日  Iron tailing powder (ITP) is considered to have the potential to replace cement to manufacture ultrahighperformance concrete (UHPC) The ITP was obtained from iron tailings after grinding for 45 minutes The chemical composition analysis of ITP demonstrates that it has abundant calcium and silicon phase (Table 2)

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