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WhatsApp: +86 18221755073The extensive extraction of mineral resources has led to a significant rise in tailings waste 1, which is characterized by its loose structure, limited water retention capacity, nutrient ...
WhatsApp: +86 18221755073Iron tailings are solid wastes produced after iron ore is refined. Based on the analysis of the development of road engineering in our country, the application status of iron tailings sand in...
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WhatsApp: +86 182217550732.1 Raw Materials. The cement used was Ordinary Portland Cement (P·O 42.5), which complied with the requirement of Chinese standard GB175-2007. The iron tailings (FN, PS, CD, BD, and LY) were selected from different regions in Hebei Province of China, as shown in Fig. 1, and the natural river sand (TR) was used to make a comparison.Their chemical …
WhatsApp: +86 18221755073Studies show [19] that a higher content of iron tailings sand results in lower mass loss and better freeze resistance of the concrete. Nuclear magnetic resonance analysis has found ... Hebei, China. Finally, BFs were purchased from a fiber manufacturer in Shanghai, China. All water used in the tests was tap water taken from the Fuxin City.
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WhatsApp: +86 18221755073The article conducts a study on the iron tailings sand concrete's fracture behaviour based on the double-K criterion. Five sets of standard three-point bending beam specimens of concrete with 0% ...
WhatsApp: +86 18221755073The study also compares the use of iron mine tailings and silica sand as fine aggregates, demonstrating that tailings are a viable substitute. The results show that the optimal mix, consisting of a 1:1 BOFS to GBFS ratio, 15% DG, and 400 m2/kg BOFS fineness, achieves a compressive strength of 113.7 MPa after 28 days when using iron mine ...
WhatsApp: +86 18221755073Quartz tailing sand (QTS) is a by-product of glass production, it's the fine sand obtained after quartz sand, the raw material of glass, had been crushed and screened, and its main chemical component is SiO 2.In the float glass process, the harm of fine quartz sand lies in the fact that after entering the furnace, it will erode the refractory material, reduce the lifespan of the furnace ...
WhatsApp: +86 18221755073Tailings are often rich in silicates, the principal component of sand. But to date, the reality has been disappointing. More than 18,000 research papers have been published on the …
WhatsApp: +86 18221755073Prevention, Sanhe 065201, Hebei, China e-mail: 1020417487@qq ... tailings sand, Zhang et al. (2006), Chen et al. (2007) and others conducted dynamic triaxial tests on copper mine tailings sand, analysed the development law of dynamic pore pressure, and proposed a new method
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WhatsApp: +86 18221755073Aerated Concrete Prepared by Quartz Tailings Sand ... Handan Hebei Province, 056038, China 4Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou Jiangxi Province 341000, China 5Tianjin Sunenergy Sega Environmental Science & Technology Co. Ltd, Tianjin 300000, China
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WhatsApp: +86 18221755073Hebei Key Laboratory of Earthquake Disaster Prevention . ... In underflow tailings sand, coarse particles (diameter >0.075 mm) act as the skeleton, and fine particles (diameter <0.075 mm) can fill ...
WhatsApp: +86 18221755073Iron tailings from Chengde area of Hebei Province were selected as coarse aggregate, and the particles were continuously graded with 5 ∼ 20 mm, ... The average damage degree of iron tailings sand and gravel concrete at 120 cycles was 5.93 %, 12.23 %, and 16.2 % higher than that of iron tailings ore concrete, iron tailings sand concrete, and ...
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WhatsApp: +86 18221755073Tailings are often rich in silicates, the principal component of sand. But to date, the reality has been disappointing. More than 18,000 research papers have been published on the topic in the ...
WhatsApp: +86 18221755073In order to measure the effect of iron tailings sand replacing natural sand on the fire resistance of concrete beams, five full-scale iron tailings sand concrete (ITSC) beams and two natural sand concrete (NSC) beams were …
WhatsApp: +86 18221755073Among them, the carbon storage species of tailings sand in Hebei are dominated by iron, while those in Henan are mainly gold and red mud. The accumulated tailings sand in …
WhatsApp: +86 18221755073The pH value of the leaching solution after MICP treatment of Pb-Zn tailings sand was stable at 7.83-8.03, and the fixation rate of metal ions was 90.28 %-100 %. FTIR, X-ray diffraction, scanning electron microscopy, and energy-dispersive spectroscopy tests showed that after the Pb-Zn tailings with particle sizes less than 100 mesh were treated ...
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