##tihuan2##This study investigated metals removal from lead-zinc mine tailings using bioleaching and followed by sulfide precipitation. Metals were dissolved from the tailings …
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##tihuan2##Lead–zinc tailings are generated during the mining process which is considered as hazardous solid waste due to its high heavy metal content and leachability in the natural state.
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##tihuan2##When the ionic HMs leached from lead-zinc mine tailings and entered into soil environment, they can bind to soil minerals, organic matter, and carbonate via the …
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##tihuan2##The lead–zinc tailings were taken from a lead–zinc mine in Huludao City, Liaoning Province, China. The basic physical parameters of the lead–zinc tailings are shown in Table 1.The XRF test results of lead–zinc tailings are shown in Table 2, and the SEM, EDS and XRD test results are shown in Fig. 1.Among them, XRF was detected by …
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##tihuan2##To comprehensively reuse lead-zinc tailings, leaching residue (LR) of solid by-products was produced after the recovery of valuable metals. This study provided a "waste-ecology" strategy by a simple, inexpensive method of roasting prepared highly active silicon modified tailing (HAST) to eliminate the environment risk of LR, and investigates …
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##tihuan2##The results show that lead-zinc mine tailings are not suitable for making ceramsite alone, and should be added with the clay material. The sintering temperature has a significant influence on ...
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##tihuan2##Lead–zinc tailings are less active than cement, but the use of lead–zinc tailings instead of 40% cement can still prepare UHPC with 28 days strength over 130 MPa [104]. In terms of workability, the …
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##tihuan2##Lead-zinc mine tailings were used to produce ceramsite by sintering method to reduce their environmental impact. The properties of tailings from Beishan Lead-zinc mine located at the north-west of Guangxi Province in southern China have been studied. The sinterability and expansion property of the main raw materials was …
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##tihuan2##Saedi et al. (2023) investigated the effect of the mechanical pre-treatment on lead-zinc tailings and showed that with 120 min grinding, the compressive strength was improved. Cement mixes ...
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##tihuan2##Lead-zinc tailings used for this study were collected from a lead-zinc mine plant in Shaoguan, China. Lead-zinc mine tailings were prepared by crushing and screening the material to particle sizes below 74 μm. A representative sample of the mine tailings was pulverized to conduct the chemical and mineralogical analysis.
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##tihuan2##Effect of particle size of lead-zinc tailings sand on unconfined compressive strength of lead-zinc tailings sand treated using MICP Fig. 2 shows that when the particle size of the Pb-Zn tailings is less than 100 mesh, the UCS and carbonate content of the specimens after MICP treatment of the Pb-Zn tailings are the largest at 0.92 MPa and …
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##tihuan2##In a field study, mine wastes containing Cu, Pb and Zn were stabilized by grasses -Agrostis tenuis for acid lead and zinc mine wastes, Agrostis tenuis for copper mine wastes, and Festuca rubra for ...
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##tihuan2##Understanding the microbial community structure in soil contaminated with heavy metals (HMs) is a precondition to conduct bioremediation in mine soil. Samples were collected from a typical lead–zinc (Pb–Zn) mine to assess the microbial community structure of the HMs concentrated in the soil. The goal was to analyze the bacterial and …
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##tihuan2##The lead/zinc (Pb/Zn) mining region in Balya and Balıkesir, in Turkey, has operated mines intensively since the 1860s; so that characterization of the sulfide minerals and tailings situated and ...
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##tihuan2##The release of heavy metal elements in heavy metal tailings ponds not only causes environmental pollution but also poses potential hazards to human health. Therefore, it is of great significance to stabilize heavy metals and apply anti-seepage treatment to tailings ponds.In this paper, the tailings in the Shenxiandong lead-zinc …
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##tihuan2##With the development of industry, the human demand for lead and zinc is increasing gradually, and the heavy metal pollution caused by the mining process of lead–zinc tailings is becoming more ...
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##tihuan2##The review also encompasses a broad range of mine water treatment strategies available for innovative management of mining tailings with a specific …
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##tihuan2##The improper stockpiling of lead/zinc mine tailings results in significant toxic impurities releasing, which threatens both the surrounding environment and human health.
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##tihuan2##Among these various treatment methods, the addition of BNCA-2-900 showed an ideal effect on the stability of HMs and soil characteristics due to two potential mechanisms. ... Contamination and health risk assessment of heavy metals in China's lead-zinc mine tailings: a meta-analysis. Chemosphere, 267 (2021), Article 128909. View …
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##tihuan2##Section snippets Tailings. In the present study, the lead-zinc mine tailings were prepared from Iranian mines. The first type of mine tailings (T 1) with very low sulfide content (0.4%) was prepared from Tiran lead-zinc mine located in Isfahan province.The second type of mine tailings (T 2) with high sulfide content (19.9%) was prepared from …
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##tihuan2##This paper reviews the progress of utilizing lead–zinc tailings as building materials and mainly summarizes the status of lead–zinc tailings in cement, geopolymer, concrete, building brick ...
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##tihuan2##The mine tailings were collected from the surface layer (0–50 cm) of a typical lead-zinc mine (26°18′33.30″ N, 107°54′14.47″ E), located in Danzhai, Guizhou Province, China, which began mining in 2014 and still in function at present.
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##tihuan2##To alleviate the pollution problem, microbially induced calcium carbonate precipitation (MICP) technology has been used to solidify and remedy lead–zinc …
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##tihuan2##These values were high compared to those obtained by [49] (9.8-22.60 cmol(+)/kg) during their study in Tunisia on the transfer of lead, zinc and cadmium from mine tailings to wheat. According to ...
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##tihuan2##Recovery of metals from the lead–zinc mine tailings using bioleaching followed by the precipitation of sulfides was studied in . Bacteria dissolved the metals from the tailings, and eventually 0.82% Pb, 97.38% …
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##tihuan2##Lead–zinc tailings are the typical solid wastes in mines with high yield and low utilization rates in some countries at present. They are mainly stockpiled in tailings reservoirs, occupying massive land resources and threatening the health of the environment. One of the advantages of building material production in sustainability is …
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##tihuan2##The possibility of using waste tailings produced by flotation in the lead and zinc mine of Grot, Serbia as a potential source of secondary mineral raw materials was examined. The aim of the research was primarily to carry out a detailed characterization in order to determine the dominant minerals, and, for the first time, to trace the changes …
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##tihuan2##In addition, an in situ stabilization experiment was performed by adding a stabilizer to a lead-zinc mine tailing pond with high-pressure rotary jet technology.
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##tihuan2##The existence of lead-zinc tailings threatens the social and ecological environment. The recycling of lead–zinc tailings is important for the all-round green transformation of economic society. In this study, the possibility of fabricating sintered ordinary bricks with lead–zinc tailings was studied based on orthogonal …
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