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Preparation of calcium carbonate particles coated with titanium dioxideHai Lin,Ying-bo Dong,and Le-yong Jiang School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China摘 要:The preparation of a new mineral composite material,calcium carbonate particles coated with titanium dioxide,was studied.The......
Preparation and characterization of calcium aluminate by chemical synthesisFeng Chen1), Yanruo Hong1), Jialin Sun1), and Jinglong Bu1,2) 1) Materials Science and Engineering School, University... and AlCl3 solutions were used to synthesize calcium aluminate hydrate precipitates at room temperature; high purity calcium aluminate powders with stable phases were made by calcination of the precursors......
Leaching ion adsorption rare earth by aluminum sulfate for increasing efficiency and lowering the environmental impactLifen Yang1,Cuicui Li1,Dashan Wang1,Fengyang Li1,Yanzhu Liu1,Xuezhen...(IARE) by the sulfate and chloride of ammonium,magnesium and aluminum were comparatively determined using column leaching method. It is found that at equal equivalent concentration of cation, the LE......
Leaching ion adsorption rare earth by aluminum sulfate for increasing efficiency and lowering the environmental impactLifen Yang1,Cuicui Li1,Dashan Wang1,Fengyang Li1,Yanzhu Liu1,Xuezhen...(IARE) by the sulfate and chloride of ammonium,magnesium and aluminum were comparatively determined using column leaching method. It is found that at equal equivalent concentration of cation, the LE......
Preparation of lead sulfate powder directly from galena concentrates QIN Wen-qing(覃文庆), LIU Hui(刘 辉), TANG Shuang-hua(唐双华), SUN Wei(孙 伟) School of Resources Processing... to prepare the lead sulfate powder. Key words: lead sulfate; galena; preparation; leaching; purification ......
Application of Image Analysis Based on SEM and Chemical Mapping on PC Mortars under Sulfate Attack于诚1,2,3,孙伟1,2,Scrivener Karen1,31. School of Materials Science and Engineering, Southeast University2...="ChDivSummary">The degradation mechanisms of cementitious materials exposed to sulfate solutions have been controversial, despite considerable research. In this paper, two methodologies of image analysis......
Preparation of Phenolized Calcium Lignosulfonate and Characterization of the Reaction by IR Spectroscopy赵斌元摘 要:A kind of calcium lignosidfonate was phenolized by phenol with sulfuric acid as catalyst. The calcium lignosidfonate and its phenolized derivatives were characterized by infrared spectroscopy. It is proved that the extent and type......
of cement stabilized soils polluted by different contents of magnesium sulfate (MS), a series of tests were conducted on the cemented soil samples, including unconfined compression strength (UCS) tests... and embedded characteristics between the cement and granular soils from the SEM images of cemented soils. The microstructure analysis shows that the magnesium sulfate acts as the additive, which......
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Physicochemical Study on the Interface Zone of Concrete Exposed to Different Sulfate Solutions刘赞群,邓德华摘 要:<正>This paper reports the results of the visual observations and micro-analysis of concrete core samples after 6 and 12 months of their exposure to sodium, ammonium and magnesium sulfate solutions with the same concentration of sulfate ions......
