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, and this bearing ability is determined by the mechanical properties of the CPB. In previous studies [5-8], to further reinforce the mechanical properties of CPB, adding high-performance fiber materials... high prediction accuracy under specific experimental conditions, but they are difficult to generalize. In addition, the empirical formula is based on the experiment and UCS test, and it is difficult......
Introduction The recovery of medium and heavy rare earths from rare earth mine wastewater continues to be of high importance since it represents a promising strategy against the global supply crisis... of filamentous blue-green microalgae (cyanobacteria) that contains high levels of carbonate and bicarbonate, and it is the most abundant in the tropical and subtropical lakes. Recently, it has been......
University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract: Chitosan-coated fly ash (CWF) was prepared by the acid leaching-coating method. Chitosan and fly ash were...], ion exchange/complexation [12, 13] and electrochemical oxidation [14], among which adsorption treatment has attracted wide attention due to its low cost and high efficiency. Typical adsorbents......
of the Symposium on Geological Hazards and Prevention and Control in High-intensity Mining Areas. Xi’an: Shaanxi Provincial Geological Survey Institute, 2016: 114-119. [28] 薛 亮. 数百亿吨"废石", 成灾还是成金?[J]. 国土资源..., 2000(2): 15-17. WAN Chang-feng. Discussion on the discharge of waste stone and stack for heap leaching in Dexing Copper Mine[J]. Nonferrous Mines, 2000(2): 15-17. [48] 刘维阁. 浅谈矿产资源的综合开发与科学合理利用[J]. 中国金属通......
temperature are the principal factors on the expansive pressure. Low water content causes the hydration to act inadequately, while high water content can produce side effects diluting the agents and weakening the expansive ability [18]. High ambient temperature aids in making the hydration action generate more heat, which further increases the expansive pressure. Existing studies show......
×10-10 m/s and k(316 kPa)=1.2× 10-10 m/s at the kilometric points of 0+650 as shown in Figure 8(b). Whenever the pressure is low at the kilometric point that means the permeability coefficient is high... immersed and non-immersed soil strengths ranged from 0.7 to 0.85, which was significantly higher [58]. The above findings concluded that both swell potential and swell pressure can significantly be reduced......
, ZHONG Hong, JIANG Tao, LIU Guang-yi, WANG Shuai. Selective electric-oxidation leaching and separation of Dexing molybdenite concentrates[J]. The Chinese Journal of Nonferrous Metals, 2013, 23(8..., 2001, 25(6): 23-26. LI Yu-ping, LI Li-fen, WANG Xian-ke. Extraction of high purity rhenium using liquid membrane method[J]. China Molybdenum Industry, 2001, 25(6): 23-26. [53] LOU Z N, GUO C F, FENG X D......
China is investigated through laboratory analyses and tests. The four debris-flow materials can all be remolded into coherent, homogeneous cylinders with high densification and strength–porosity.... Given the possibility that some of the fines may have been lost due to the leaching action of surface water, the detritus is collected from 0.3-1.0 m below the deposit surfaces. About 20, 10, 5 and 10 t......
contribution to the modern industry. However, various problems have arisen in recent years, such as high working temperatures, high rock pressure, and the high probability of rocks bursting [1, 2... higher shear stress, yield stress, and apparent viscosity with the same pH value condition. However, an overly high temperature (50 °C) cannot raise the apparent viscosity. Non-neutral conditions, for pH......
increase the content of organic carbon and nitrogen in soil particulates, which means that biochar can reduce nutrient leaching and increase nutrient recycling [18]. Furthermore, the surface of biochar has... Biochar was produced using rice straw, which was pyrolysed at 300 °C for 1 h (17 °C/min) in a high-performance muffle furnace (SX 2-5-12, Yuandong Therm Corporation in Changsha, China). Biochar (10 g......
