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Selectively recovering scandium from high alkali Bayer red mud without impurities of iron, titanium and gallium刘召波,宗燕兵,李宏煦,贾东民,赵子晗School of Metallurgical and Ecological Engineering University... alkali Bayer red mud(RM) through sulfation-roasting-leaching process. Effects of roasting and leaching conditions including roasting time, roasting temperature, concentrated H2SO4 addition, leaching......
Selectively recovering scandium from high alkali Bayer red mud without impurities of iron, titanium and gallium刘召波,宗燕兵,李宏煦,贾东民,赵子晗School of Metallurgical and Ecological Engineering University... alkali Bayer red mud(RM) through sulfation-roasting-leaching process. Effects of roasting and leaching conditions including roasting time, roasting temperature, concentrated H2SO4 addition, leaching......
Toughening of Epoxy Resin with Solid Amine Terminated Poly(ethy-lene glycol) Benzoate and Effect of Red Mud Waste ParticlesB.C.Samanta,T.Maity,S.Dalai,A.K.Banthia摘 要:red mud waste particles.The solid ATPEGB modifier synthesized from the acid catalyzed esterification reaction of poly(ethylene glycol)(PEG......
拜耳赤泥脱硫工艺的应用基础研究黄芳1,李军旗1,赵平源1,陈义1,张志刚1(1.贵州省贵阳市贵州大学材料科学与冶金学院)摘 要:拜耳赤泥脱除燃煤烟气SO2的新工艺符合"以废制废,变废为宝"的原则.利用拜耳赤泥作为脱硫剂,在填料吸收塔内进行脱硫,脱硫效率高,流程简单,经济,适应性强.结果表明,脱硫率与液固比xA,温度xB和鼓风量xC关系的回归方程为η=-0.52xA2+7.7225xA+0.0056xB2-0.52xB+29xC2-4.3xC+77.15.脱硫终点pH值控制在5.0左右为宜.脱硫产物主要为亚硫酸钙......
氧化铝工业产出赤泥脱钠新工艺王云山1,杨刚1,张金平1(1.北京市科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室)摘 要:采用绿色化学新工艺脱除赤泥中的钠.试验条件下氯化铵浸出赤泥中钠的较适宜工艺参数为:反应温度160℃,反应时间4h,氯化铵用量为理论用量的1.5倍,赤泥粒度为94~150μm.赤泥不溶性残渣中的Na2O含量可以降低到1%以下,满足作水泥材料要求.钙,镁,钠通过体系中NH3和CO2及烟道气中提取的CO2与氯化铵分离,氯化铵循环利用.关键词:有色金属冶金； 赤泥； 脱钠； 湿......
Preparation of soil nutrient amendment using white mud produced in ammonia-soda process and its environmental assessment SHI Lin(石 林), LUO Han-jin(罗汉金) College of Environmental Science... of white mud and potassium feldspar and its environmental assessment were investigated. Under the optimal conditions of a blending mass ratio of 70?30 for white mud to potassium feldspar, a calcination......
化铝；氧化钠 中图分类号:TQ 133.1 文献标识码:A Recovery of Al2O3 and Na2O from red mud by sub-molten salt ZHONG Li1, 2, ZHANG Yi-fei1 (1. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China) Abstract: The recovery of Al2O3 and Na2O from red mud......
~186.9 m2/g；其他指标如下:密度2.7~2.89 g/cm3,含水量82.3%~ 105.9%,饱和度91.1%~99.6%,熔点1200~1250 ℃,塑性指数17.0~30.0,持水量79.03%~93.23%[17]. 表1 氧化铝厂赤泥化学成分[5-14] Table 1 Composition of red mud of aluminum oxide...CaSiO3,CaCO3和Al(OH)3；低温下使用碱性溶液回收Al,获得的Al2O3达到49.4%.赤泥尾料主要成分为CaCO3和CaSiO3,且碱性Na2O含量低,平均为0.16%,可完全用于水泥生产,增加赤泥利用率. 图1 钙化-碳酸化方法回收赤泥中的铝 Fig. 1 Flow diagram of Al recovery from red mud......
号:X758 文献标志码:A Effect of chemical fixation of Pb in mine contaminated soil using red mud-phosphorus composition particles Luo Hui-li1, 2, Huang Sheng-sheng1, Luo Lin2, Liu..., Changsha 410128, China) Abstract: The red mud composite particles made up of red-mud (waste of alumina refinery) and phosphate were applied as remediation materials in Pb pollute soil. The leeks were......
泥；强化；还原 中图分类号:TF556 文献标志码:A 文章编号:1672-7207(2010)03-0838-07 Reduction of iron oxides of red mud..., China) Abstract: Effect of Na2CO3 and CaF2 on reduction of red mud oxide was studied under the condition of 1 150 ℃, coal-based direct reduction for 180 min. Microstructure of reduction sample......
