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, it possesses high electrical conductivity and transparency in the visible region, combined with low electrical resistance [1-3]. Many investigations and development studies on ITO were mainly focused... in crystal lattice, and amorphization in the solid material via the mechanical force by high-energy milling [13-15]. The other important goal of this work was to investigate the influence of mechanical......
to this acid corrosion. To mitigate this, cement-based materials used in underground mines should be made with high acid-resistance. By partially replacing cement with silica fume, much research has...] investigated the durability of concrete samples under sulfuric acid rain leaching. It was found that the incorporation of nano-silica reduced weight loss at all ages of leaching. In other words, acid......
flow diagram of common cyanidation leaching 1 氰渣脱氰技术的分类方法 根据氰渣的利用和处置类别不同,标准HJ 943-2018将氰渣脱氰处理适用技术分为四类:1) 金矿石氰渣尾矿库处置；2) 金精矿氰渣尾矿库处置；3) 堆浸氰渣处置；4) 氰渣利用.这一分类方法从金矿的处理工艺类型和最终处置办法两方面入手,给出了相应的脱氰处理技术.如... 943-2018. 黄金行业氰渣污染控制技术规范[S]. HJ 943-2018. Technical specification pollution control of cyanide leaching residue in gold industry[S]. [7] 董凯伟, 白云龙, 谢 锋, 等. 氰化废水回收技术综述[J]. 有色金属(冶炼部分), 2020(4): 75-83. DONG......
anodizing with a high-voltage spark/arc discharge, and prompts the in-situ formation of ceramic oxide film relying on instantaneous high temperature and pressure. There are several factors that influence... great potential in the fields of aerospace and military due to its high specific strength, better formability, and excellent electromagnetic shielding performance. The research process of Mg-Li alloys......
, ZHANG D X, JIANG J Z. Structural stability of high entropy alloys under pressure and temperature[J]. Journal of Applied Physics, 2017, 121: 1-11. [43] LI Z K, RMANN F, GRABOWSKI B, NEUGEBAUER J, RAABE... fault energies of NiFeCrCoMn high-entropy alloy[J]. JOM, 2013, 65: 1780-1789. [103] YU P F, CHENG H, ZHANG L J, ZHANG H, JING Q, MA M Z, LIAW P K, LI G, LIU R P. Effects of high pressure torsion......
" won the second prize of National Science and Technology Invention Award in 2006, and the "Large-depth high-precision wide-area electromagnetic exploration technology and equipment" won the first prize... also enjoys a high reputation in the country for its achievements in drilling technologies for complex formations, theories and technologies for drilling tools for extreme formations, monitoring......
tetrahedral units[2]. Compared to Portland cement, geopolymer possesses low energy consumption[1-4], less CO2 emission[5-7], high early strength[8-9], less shrinkage[10-11], low permeability [12], good fire...]. Compared to the PS and PSS types, PSDS geopolymeric cement shows some advantages over the other two types such as easy operation, high strength, strong bond to a concrete or steel substrate, good......
. The results show that not all sites in Changsha city may be suitable for living without remediation. About 9.0% of the study area provided a hazard index (HI)>1.0, and 1.9% had an HI>2.0. Most high HIs... of environmental risks[14]. However, due to the high costs and time constraints, the accuracy of the direct analysis of in situ data in field investigation is often dubious and the observations contain......
electrochemical behavior of base metal sulfides. Although high conditioning pH, long conditioning time and extensive surface oxidation have been proposed to depress pyrite and to improve selectivity [1,2... in pyrite depression. They have been consumed in flotation plants in spite of many practical problems related to handle in addition to high cost, such as toxic, causing poisoning and several environmental......
for sample D, with the strongest acidity (pH=2.04) and the deepest color (brown). The samples all contained high levels of SO42-, Ca2+, Fe3+ and Mg2+; and the concentration of Ca2+ was even higher than... communities’ compositions and some significant correlation geochemical variables 4 Discussion AMD is an extremely acidic environment with low pH and high levels of metal concentrations [16]. The investigation......
