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期(15 min以内),以硫酸钠为添加剂,球团内部金属铁晶粒明显,铁晶粒粒径范围为1~10 μm;以碳酸钠为添加剂,球团内部金属铁晶粒几乎不可见,边缘可见铁晶粒与脉石成分连生. 关键词:高铝铁矿石;硫酸钠;碳酸钠;还原;动力学 中图分类号:TD982 文献标志码:A Effects of Na2SO4 and Na2CO3 on sodium..., Guangzhou 510650, China; 2. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China) Abstract: The effects of Na2SO4 and Na2CO3 on the sodium-reduction kinetics......
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potentiometric titration method; industrial sodium hydroxide; sodium hydrox-ide; sodium carbonate; [全文内容正在添加中] ......
was successfully removed from kaolinite by shear flocculation, when sodium oleate was used. The mechanism of selective shear flocculation of hematite from kaolinite was studied by X ray photoelectron spectroscopy (XPS) and the calculation of the total potential energy between hematite particles. It was found that the surface of hematite could adsorb chemically sodium oleate and made it hydrophobic......
;UV-vis spectra of sodium aluminate solution at room temperature 对比紫外光谱图可以明显发现,除了220 nm,260 nm处的紫外吸收峰外,高苛性比(αk=4.44)溶液在370 nm处出现较弱吸收峰,且主要在中,低浓度的溶液中出现;高浓度溶液(≥300 g/L)在320~340 nm区间出现较强吸收峰,且随着苛性比的增加会发生一定的...外光谱随时间的变化 Fig. 2 UV-vis spectra of concentrated sodium aluminate solution with time 2.3 量子化学计算结果 除了反应(1)~(3),文献[14, 19-20]中对于铝酸钠溶液自发分解机制的推测还包括如下反应: → (4......
(Al2O3)/m(SiO2)=5.68) in pH range of 9.5-10.0 by using sodium carbonate (5 kg/t) and sodium polyacrylate (7 g/t) as dispersant and flocculant respectively. Sodium carbonate acts as both pH modifier and favorable dispersant for aluminosilicates. The high performance of sodium polyacrylate on flocculation for diaspore is contributed to the carboxyl of sodium polyacrylate that interacts with active Al......
溶液的粘度;对实验数据进行多元线性拟合得到了溶液粘度与温度,浓度及苛性比的定量关系:lnη=-1.554+1.139αk+0.01872ρ-0.0503T. 关键词: 铝酸钠溶液; 粘度; 氧化铝 中图分类号:TF802 文献标识码:A 文章编号: 1672-7207(2005)02-0229-05 Viscosity of Sodium Aluminate Solution CHENG... of temperature, concentration of alumina and molar ratio of soda and alumina (αk) on the viscosity of pure sodium aluminate solution were studied. Results show that viscosity mainly depends on temperature......
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