Mechanical activation as an innovative approach for the …

If iron ore tailings exhibit pozzolanic activity (a capacity to react with calcium hydroxide to form hydration products), they can be used as solid precursors in cementitious …

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Preparation and properties of Portland cement from …

In this paper, RET recycle wastes were used as raw materials to prepare Portland cement, and the phase component and microstructure characteristic of clinker, hydration characteristic and performance of cement were also studied. ... Preparation and characterization of Portland cement clinker from iron ore tailings. Constr. Build. Mater. (2019 ...

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Preparation and characterization of Portland cement clinker …

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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Harnessing iron tailings as supplementary cementitious …

The increasing demand for sustainable construction materials has led to the exploration of iron tailings (ITs) as supplementary cementitious materials (SCMs) in Limestone Calcined Clay Cement (LC 3).This study investigates the effects of varying ITs content in LC 3 on compressive strength, microstructure, and environmental impact. Replacing 28 % of LC 3 with …

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Research Progress on Comprehensive Utilization of Iron Tailings

LUO L. Experimental study on preparation of portland cement clinker from iron tailings[D]. Wuhan: Wuhan University of Technology, 2016. ... et al. Utilization of iron tailings to prepare high-surface area mesoporous silica materials[J]. Science of the Total Environment, 2020, 736: 139483. doi: 10.1016/j.scitotenv.2020.139483. CrossRef ...

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Preparation and properties of Portland cement from …

Secondary recycle waste of rare earth tailing (RET) was used as raw material to prepare Portland cement. The phase composition and microstructure of clinker, mechanical …

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Investigating the hydration characteristics of iron tailings …

However, the hydration characteristics of ITP were still inferior to that of cement, making it difficult to eliminate the dilution effect caused by substituting cement with iron tailings [15].In reality, the dilution effect actually increases the effective water-to-cement ratio, disrupts the pore structure, enhances porosity, and reduces the strength of the cementitious material.

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Properties of Ultra-High Performance Concrete incorporating iron …

In this research, ordinary Portland cement (P.O 52.5), silica fume (SF) and fly ash were used as cementitious materials. ... Utilization of iron tailings to prepare high surface area mesoporous silica materials. Sci. Total Environ., 736 (2020), Article 139483. View PDF View article View in Scopus Google Scholar [29] S. Zhao, J. Fan, S. Wei.

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Utilization of Iron Ore Tailings as Raw Material for Portland Cement

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 Portland cement clinker.

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CN104150794B

The invention provides the preparation method of a kind of iron tailings portland cement, comprise the following steps: raw material at least includes following components: calcium oxide, silicon oxide, iron tailings and aluminium oxide, the mass percent of each component is: calcium oxide 60～70%, silicon oxide 12～20%, iron tailings 5～20%, aluminium oxide 3～6%, raw material, …

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Preparation and Microwave Absorbing Properties of Double …

To develop the microwave absorbing (MA) properties of cementitious material mixed with mine solid waste, the iron tailings cementitious microwave absorbing materials were prepared. The iron tailings was treated into different particle sizes by planetary ball mill, and the physicochemical properties of iron tailings were tested by laser particle size analyzer and …

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Utilization of Iron Ore Tailings as Raw Material for …

produced Portland cement clinkers is given in Figure . In both clinkers, the main mineral phases of two produced clinkerswereC 3 S,C 2 S,C 3 A,andC 4 AF,whichwereinaccord with the characteristic minerals of a typical Portland cement clinker []. However, there is a small di erence between the two clinkers that RM- contains less amount of C 2 ...

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Use of iron ore tailings as partial replacement for cement …

Portland cement is the world's most commonly used structural material due to its wide array of applications in construction materials. As a result, its production has increased annually by about 9% worldwide [1].The high demand for cement represents a great danger to the environment due to the large CO 2 volume generated [2], [3], estimated at 5 to 8% of global …

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Preparation of Portland Cement with Gold Ore Tailings

The disposal of gold ore tailings (GTs) has been a very difficult problem for a long time. Thus, this study explored a new approach to the management of GTs by preparing Portland cement. Physical properties, reaction mechanisms, and hydration product types of cement prepared with GTs (C-GTs) and ordinary Portland cement (C-SS) were compared. X-ray …

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Hydration kinetics of cement–iron tailing powder composite …

K-D model can simulate cement-iron tailings powder composite binder's hydration. ... of dry powdered nSiO 2, nAl 2 O 3, nCaCO 3, and colloidal nSiO 2 on the hydration kinetics and apparent activation energy of Portland cement. ... In the sample preparation, the hardened paste samples of CT-C-CMs that have reached the specified age are removed ...

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Preparation and characterization of Portland cement clinker from iron …

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. Properties of the cement clinkers sintered at 1420 °C with different IOT addition, from 0 to 20 wt%, were investigated. The chemical and mineralogical analysis, and microscopic examination showed …

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Preparation and properties of Portland cement from …

In this paper, RET recycle wastes were used as raw materials to prepare Portland cement, and the phase component and microstructure characteristic of clinker, hydration characteristic and performance of cement were also studied. ... Preparation and characterization of Portland cement clinker from iron ore tailings. Constr. Build. Mater., 197 ...

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Preparation and characterization of Portland cement …

[27] Yan J, Nie S, Liu S and Qiu T 2021 Preparation of Portland cement clinkers by utilizing copper tailings as siliceous material Bulletin of the Chinese Ceramic Society 40 1273–9. Google Scholar [28] Huang Y Y 2017 Study on The Characteristics of C3S Minerals and the Influence of Trace Element Doping in Portland Cement Clinker.

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The Preparation and Dust Suppression Performance Evaluation of Iron …

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 further applied to mine interface pollution control. The mechanical properties, hydration products, wind erosion resistance, and freeze–thaw (F–T) cycle resistance of …

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Preparation of Portland Cement with Gold Ore Tailings

The disposal of gold ore tailings (GTs) has been a very difficult problem for a long time. Thus, this study explored a new approach to the management of GTs by preparing Portland cement. Physical properties, reaction mechanisms, and hydration product types of cement prepared with GTs (C-GTs) and ordinary Portland cement (C-SS) were compared.

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(PDF) Research progress on the preparation of …

Therefore, according to the characteristics of the tailings, this article has studied on the pozzolanic activity of the tailings when used as cement admixture and the optimal amount of the ...

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Innovative methodology for comprehensive utilization of iron …

However, there is only a little information about iron ore tailings in the production of cementitious materials. On one hand, the iron ore tailings are used as admixture in cement. On the other hand, they are used to produce clinker, but the consumption of iron ore tailings is only about 5% [10], [11]. In this paper, we use the residues after ...

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Mechanical activation as an innovative approach for the preparation …

DOI: 10.1016/j.mineng.2019.106068 Corpus ID: 208698266; Mechanical activation as an innovative approach for the preparation of pozzolan from iron ore tailings @article{Yao2020MechanicalAA, title={Mechanical activation as an innovative approach for the preparation of pozzolan from iron ore tailings}, author={Geng Yao and Qiang Wang and Yu …

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Preparation activated tailings by pH swing process: …

Besides tailings, cement plays a crucial role in the preparation of CTB materials [29, 30].However, the Portland cement (PC) industry is facing crucial environmental issues, with an average carbon intensity as high as 900 kg CO 2 per ton of cement clinker [31, 32].Calcium sulfoaluminate (CSA) cement is thus attracting more and more attention worldwide due to its …

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CN113511825A

The invention relates to the field of building materials, in particular to a preparation method of iron tailing portland cement clinker. Mixing iron tailings, steel slag, lime powder and tin slag, putting the mixture into a grinding mill for grinding, pausing for several times during the grinding process, stirring, suspending a stirrer at the upper end of the grinding mill, descending into the ...

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Preparation and characterization of Portland cement clinker …

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 …

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Preparation and characterization of Portland cement …

The content of C 3 S in ordinary Portland cement ranges typically from 55% to 65% [28, 29]. Normally, C 3 S formation is effectively complete at a sintering temperature of about 1450 °C . Therefore, the optimum sintering temperature for the preparation of Portland cement clinker from acid leaching residue was 1450 °C.

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C-A-S-H Gel and Pore Structure Characteristics of Alkali …

Although the cost of alkali activator accounts for 41.6% of the total material cost, this AACM attains lower materials cost than the reference C30 concrete. It suggests that using iron tailings as aggregates, red mud, blast furnace slag, and a small amount of Portland cement as precursors to prepare AACM has a certain economic potential.

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Test research on hydration process of cement-iron tailings …

Mechanically activated siliceous iron tailings were used as SCMs to prepare concrete, and their compressive strength, impermeability, frost resistance, ... Preparation and characterization of Portland cement clinker from iron ore tailings. Constr. Build. Mater., 197 (2019), pp. 152-156. View in Scopus Google Scholar [20]

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Study on the preparation and sulfate resistance of Portland cement

It is well known that the ferrite phase is a continuous solid solution of C 2 F ∼ C 6 A 2 F [28, 29], and its Fe/Al ratio plays a crucial part in the hydration and sulfate resistance of the ferrite mineral phase.A dense covering layer will be formed as ferrite mineral phases have a high Fe/Al ratio, which can effectively hinder the ion's dissolution [28].

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Experimental study on the preparation of cementitious …

Studies have shown that iron tailings (IOT) have potential activity and can be used to prepare cementitious materials to replace cement.The purpose of this study was to evaluate the effects of different activation methods, activation time and activator types on the properties of IOT cementitious materials.Different mechanical activation time (0.5 h, 1 h, 1.5 h, 2 h, 2.5 h, 3 h), …

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Preparation and characterization of Portland cement …

This work reported a process for the preparation of Portland cement clinker from sulfuric acid leaching residue of coal fly ash. Aluminum and iron in fly ash were effectively leached by sulfuric ...

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