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Alumina recovery from spent Bayer liquor by methanol ZHANG Ying(张 盈)1, 2, ZHENG Shi-li(郑诗礼)1, DU Hao(杜 浩)1, WANG Shao-na(王少娜)1, PENG Ying(彭 鹰)3, ZHANG Yi(张 懿)1 1. National Engineering.... In this study, a method was explored to recover alumina from spent Bayer liquor by deep decomposition with methanol. A variety of conditions, including reaction temperature, reaction time, methanol......
; 文献标志码:A 文章编号:1672-7207(2014)08-2559-07 Corrosion behavior of four kinds of steels in sulfide-containing Bayer liquor XIE Qiaoling... and 316L stainless steel in sulfide-containing Bayer liquor were studied by using high-temperature coupon exposure tests, means of anodic polarization curves and cyclic voltammetry. The results indicate......
Recovery of V2O5 from Bayer liquor by ion exchangeZHAO Zhuoa, b, LI Xiaobina, and ZHAO Qingjieb a School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China b Zhengzhou Research Institute of Chalco Ltd., Zhengzhou 450041, China摘 要:A new technology was developed to recover V2O5 from Bayer spent liquor by ion......
J. Cent. South Univ. Technol. (2008) 15: 622-626 DOI: 10.1007/s11771-008-0116-6 Effect of tetracarbon additives on gibbsite precipitation from seeded sodium aluminate liquor ZENG Ji-shu(曾纪术... and tetrahydrofurane on gibbsite precipitation from caustic seeded sodium aluminate liquor were investigated. The additive was charged into supersaturated seeded sodium aluminate liquor, then the precipitation ratio......
]. The analysis of anions and organic acids in Bayer liquor is vital for two main reasons, namely process monitoring (including quality control and optimisation of product yield and purity) and both toxicology... in composition, sample matrices can be adsorbed onto the column. Analysis of Bayer liquor by ion chromatography(IC) is not used routinely most probably due to co-elution of weakly retained species[5......
transformation rate, indicating that the S-DSP forms through a nucleation and growth process. 63% of the total sulfur is removed from a simulated -bearing Bayer liquor (ρ0(S)=2.4 g/L, w(S)/w(SiO2)=0.13... behavior of pyrite during Bayer digestion at high temperature[J]. The Chinese Journal of Nonferrous Metals, 2013, 23(3): 829-835. [3] HINDA A R, BHARGAVAA S K, GROCOTT S C. The surface chemistry......
Al(OH)3precipitation from synthetic Bayer liquor [J]. Hydrometallurgy, 2011, 109(1, 2): 72-79. [17] LIU Hai-bo, CHEN Tian-hu, FROST R L. An overview of the role ofgoethitesurfaces in the environment... and increases the activation energy of dissolution, the diffusion process of which is the rate-controlling step. Key words: gibbsitic bauxite; dissolution; kinetics; ferrite; Bayer process 1 Introduction......
]. Transactions of Nonferrous Metals Society of China, 2018, 28: 367-375. [6] BARNES M C, JONAS A M, GERSON A R. The kinetics of desilication of synthetic spent Bayer liquor seeded with cancrinite... the A/S of the bauxite is only 4.97. Key words: Bayer process; kaolinite; pre-desilication; dissolution kinetics; sodalite 1 Introduction Bauxite is the main raw material of the alumina production......
; Abstract: Periodical attenuation of particles, which interferes seriously the normal alumina production, exists in Bayer process. In order to solve this problem... the decrease of the specific surface area of seeds, which is the major reason causing explosive attenuation of Al(OH)3 particles in seed precipitation process. Key words: Bayer process; sodium......
activation energies were calculated to be 99.144 and 115.149 kJ/mol, respectively. Key words: gibbsite; crystal structure; dissolution; kinetics; Bayer process 1 Introduction The Bayer process..., a natural mineral in the natural environment resulting from rock weathering, is the major raw materials for the Bayer process. The parent rocks appeared during the initial eruption of volcanoes. Most......