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simulation. The results show that compared with DTAC, TBAC can separate kaolinite and diaspore effectively at lower concentration and wider pH range. Based on the molecular dynamics simulation... of pH value on flotation recovery rates of kaolinite and diaspore with DTAC (a) and TBAC (b) 因此,相对于传统阳离子捕收剂DTAC,TBAC可以在较宽的pH值范围内分选一水硬铝石和高岭石,并取得更大的回收率差异. 图3所示分别为pH 5.0~5.5时捕收剂DTAC和TBAC浓度对两种单矿物浮选回收率的影响......
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as a flocculant for red mud separation from the caustic aluminate liquor at 95 ℃. The used red mud was generated from Chinese diaspore bauxite in Bayer process of alumina production. And the changes of PATAC... (FTIR) spectral analysis. 2 Experimental 2.1 Materials The red mud slurry used in this study was prepared from Bayer digestion of diaspore bauxite by a bauxite refinery at Zhengzhou Institute......
and small amount of mullite after thermochemical activation. Meanwhile, diaspore is transformed into α-Al2O3. During the alkali leaching of activated materials, amorphous SiO2 dissolves in the caustic soda...] CARIM A H, ROHRER G S, DANDO N R, TZENG S Y, ROHRER C L, PERROTTA A J. Conversion of diaspore to corundum: A new α-alumina transformation sequence[J]. Journal of the American Ceramic Society, 1997, 80......
calcium aluminate. In the remaining alumina minerals, diaspore and boehmite are converted to corundum, while kaolinite is converted to mullite. Corundum and mullite are alkali-insouble, it results......
on cell volume of diaspore (refined) 表4 精修后氧化铝晶体参数(α=β=90°,γ=120°) Table 4 Parameters of alumina crystals after refinement (α=β=90°, γ=120°) 根据精修得到的参数,通过Materials Studio8.1建立氧化铝晶体模型,计算得到电荷布居数,结果如表5所示.由表... Xiaobin, ZHOU Qiusheng, PENG Zhihong, et al. Study on the kinetics of digestion roasted diaspore in the sweeting process[J]. Journal of Central South University of Technology (Natural Science), 2000, 31......
. The bacterial metabolites have an inhibiting effect on the release of Al, and have an effective flocculation effect on Al. The precipitates of diaspore and organic acid aluminum are one of the primer causes......