The results showed that the toxic phase chrysotile was almost converted into forsterite when the asbestos tailings powder was pre-fired at 700 °C for 1 h. ... The presence of iron in the solid ...
Based on the attribute of asbestos tailings rich in silicon and magnesium, the powder of asbestos tailings was pre-calcined followed by MgO addition in the green body and finally sintered to ...
Iron tailings are the main component of industrial solid waste, and their resource utilization has attracted the attention of the whole society. Based on the introduction of chemical mineral composition of iron tailings, the comprehensive utilization status of iron tailings is analyzed. Some existing problems are put forward and relevant ...
We investigated the potential of tailings generated from chrysotile asbestos fiber production as a source of iron, nonferrous metals, and gold. We proposed the use of granulometric separation and systematically …
Research work included a well-rounded property comparison between iron tailings and conventional mineral aggregates, as well as a comprehensive pavement performance assessment and enhancement on asphalt mixes containing iron tailings.
DOI: 10.1016/J.JNONCRYSOL.2018.10.029 Corpus ID: 164844643; Thermal process and mechanism of phase transition and detoxification of glass-ceramics from asbestos tailings @article{Wenmiao2019ThermalPA, title={Thermal process and mechanism of phase transition and detoxification of glass-ceramics from asbestos tailings}, author={Zheng …
When compared with basalt, high temperature property and the resistance to low temperature cracking of AC-25 asphalt mixture was improved by using asbestos …
AbstractThis paper reports the results of an initial attempt of using iron ore tailings (IOTs) to develop greener engineered cementitious composites (ECCs). ECC is a unique class of high-performance fiber-reinforced cementitious composites featuring high ...
Liu and Xu (2011) carried out a test road project, where the asphalt mixture containing asbestos tailings was used in surface friction layer. It was found from tracking inspection that there were no significant rutting, cracking and stripping in test section after 2-year service and the resistance of pavement to skid was still maintained well ...
The development of iron and steel industry requires the exploitation of a large number of iron ore resources. While producing iron concentrate powder on demand, a large number of eliminated tailings will be produced [1, 2].According to statistics, 2.5–3 tons of tailings will be produced for each ton of iron concentrate powder screened on …
To solve the environmental problem of iron tailings, the preparation of green binding materials using iron tailings powder (ITP) shows bright prospects. However, the low activity of ITP limits its use as supplementary cementitious materials in large amounts. In this work, the activity of ITP treated for different milling times and at different ...
Fig. 2 illustrates the iron ore beneficiation process, particularly magnetic separation, resulting in the generation of inevitable tailings. Due to the characteristics of iron ores and the conditions during beneficiation, it is inevitable that approximately 2.5–3 tons of IOTs are generated for every 1 ton of iron ore concentrate produced [7].In 2019, …
Concrete with waste products such as glass powder and iron ore tailings offers technical, economic and environmental advantages. In this experimental investigation, glass powder is replaced with ...
Feasibility Study of Developing Green ECC Using Iron Ore Tailings Powder as Cement Replacement Xiaoyan Huang1; Ravi Ranade2; and Victor C. Li, F.ASCE3 Abstract: This paper reports the results of an initial attempt of using iron ore tailings (IOTs) to develop greener engineered cementitious
DOI: 10.1016/j.wasman.2020.03.008 Corpus ID: 214750933; Preparation of porous glass-ceramics from coal fly ash and asbestos tailings by high-temperature pore-forming. @article{Zeng2020PreparationOP, title={Preparation of porous glass-ceramics from coal fly ash and asbestos tailings by high-temperature pore-forming.}, author={Li Zeng and …
The results showed that the toxic phase chrysotile was almost converted into forsterite when the asbestos tailings powder was pre-fired at 700 °C for 1 h. During the sintering process of the green body, with the increase in the crystallization temperature, the content of the forsterite firstly increased and then decreased, and the enstatite ...
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 the range of 450 – 550 m 2 /kg, the activity is larger than that of fly ash, and when SSA is 469 m 2 /kg, the activity reaches its largest value of 76.82%. The content …
TANG Z, GAO P, LI Y, et al. Recovery of iron from hazardous tailings using fluidized roasting coupling technology[J]. Powder Technology, 2020, 361:591-599. Google Scholar [20] SUN Y, ZHANG X, HAN Y, et al. A new approach for recovering iron from iron ore tailings using suspension magnetization roasting:A pilot-scale study[J]. Powder …
To use many asbestos tailings collected in Ya-Lu highway, and to explore the feasibility of using asbestos tailings as aggregates in common asphalt mixtures, and properties of some asphalt mixtures were evaluated as well. X-ray diffraction (XRD), X-ray fluorescent (XRF), and atomic absorption spectrophotometry (AAS) were employed to …
Test results showed that the designed micro-surfacing mix with iron ore waste can meet the requirements for use and the maximum content can reach 20% of …
Researchers have devised new methods to turn toxic asbestos mine tailings into innocuous piles of carbonate rock and draw down atmospheric carbon dioxide at the same time. Close Search for: Search
In some cases, materials such as iron tailings improve the pore structure of the concrete due to the presence of particles ... Influence of dolomite rock powder and iron tailings powder on the electrical resistivity, strength and microstructure of cement pastes and concrete. Coatings, 12 (2022), 10.3390/coatings12010095.
The chemical composition of iron tailings powder (ITP) is similar to that of supplementary cementitious materials (SCMs). It has been reported that activated high-silicon ITP
Asbestos means the asbestiform varieties of serpentinite (chrysotile), riebeckite (crocidolite), cummingtonite-grunerite, anthophyllite, and actinolite-tremolite. Asbestos …
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 …
But authorities expect to take care of that soon, starting with a $12 million-investment in Alliance Magnesium, a company that has developed a method to extract magnesium from asbestos tailings ...
For example, Cheng et al. [17] found that mechanically grinding iron tailings powder exhibited low pozzolanic activity, led to a decreasing trend in the mechanical performance of iron tailings concrete as the substitution rate increased. Therefore, iron tailings as mineral admixtures are only suitable for a small portion of cement …
Iron ore tailings (IOTs) are an inevitable by-product produced during the beneficiation process of iron ore (Almeida et al., 2023). The rapid growth of mineral mining and ferrous metallurgy has led to an increase in the generation of IOTs. Approximately 0.40–0.60 tons of IOTs are generated in the treatment of 1.0 ton of iron ore.
Novel Modular Process to Produce Magnesium Metal from Serpentinite Mine Tailings Gillian Holcroft, Eng., M.Eng., Mag One Products Inc. (Lead Author) Tom Whitton, Eng., Mag One Products Inc.
The XRD results for the raw materials of iron tailings, graphite, SiC powder and the SiC porous ceramics of S0 and S5 sintered at different temperatures for 1 h are shown in Fig. 2. It can be seen that ... Novel Preparation of ed Glass-ceramics from Asbestos Tailings and Waste Glass by Self-expansion in High Temperature. J. Non …
