Results 21 to 30 of about 79,481 (302)

Parametric Study of Residence Time Distributions and Granulation Kinetics as a Basis for Process Modeling of Twin-Screw Wet Granulation

Pharmaceutics, 2021
Twin-screw wet granulation is a crucial unit operation in shifting from pharmaceutical batch to continuous processes, but granulation kinetics as well as residence times are yet poorly understood.
Timo Plath, Carolin Korte, Rakulan Sivanesapillai, Thomas Weinhart   +3 more
doaj   +1 more source

Lanthanides as impurities in the Bayer production cycle of the aluminum hydroxide from Sierra Leone bauxite

Romanian Journal of Ecology & Environmental Chemistry, 2022
This paper is describing a careful study on content and distribution of rare elements in the fluid and solid phases involved in dry and classified aluminum hydroxide production through Bayer process at Alum SA, Tulcea, Romania.
Lidia Kim, Gheorghe Dobra, Raluca Isopescu, Sorin Iliev, Lucian Cotet, Alina Boiangiu, Gina Alina Catrina, Laurentiu Filipescu   +7 more
doaj   +1 more source

EFFECT OF METAL ADDITIVES IN HYDROCHEMICAL PROCESSING OF DIASPORE-BEMITE BAUXITE ON PHYSICOCHEMICAL PROPERTIES OF REDUCED MUDS

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2020
The work is devoted to study of the high-temperature hydrochemical decomposition of mineral complexes of diaspore-bemite bauxites by the Bayer method with the extraction of macro-components-aluminum and iron in the presence of metal reducing agents.
S.A. Bibanaeva, L.A. Pasechnik, V.M. Skachkov, V.T. Surikov, S.P. Yatsenko   +4 more
doaj   +1 more source

Highly efficient separation of titanium minerals from a modified bauxite residue through direct reduction: A comparison study

Journal of Materials Research and Technology, 2023
Bauxite residue, which is a solid waste generated during the production of alumina, contains significant amounts of iron (Fe) and titanium (Ti) resources.
Yuguan Zhang, Yilin Wang, Lingyun Yi, Tiangui Qi, Qiusheng Zhou, Zhihong Peng, Guihua Liu, Xiaobin Li   +7 more
doaj   +1 more source

Novel Method of Bauxite Treatment Using Electroreductive Bayer Process

Metals, 2023
Reductive leaching in the Bayer cycle using iron (2+) allows for Al extraction to be significantly increased through the magnetization of Al-goethite and Al-hematite.
Andrei Shoppert, Dmitry Valeev, Irina Loginova   +2 more
doaj   +1 more source

Influence of Process Parameters in Three-Stage Purification of Aluminate Solution and Aluminum Hydroxide

Metals, 2023
The influence of process parameters in the three-stage purification of aluminate solution from the Bayer process and aluminum hydroxide was considered in this paper.
Vladimir Damjanovic, Radislav Filipovic, Zoran Obrenovic, Mitar Perusic, Dusko Kostic, Slavko Smiljanic, Srecko Stopic   +6 more
doaj   +1 more source

Prediction of Al2O3 leaching recovery in the Bayer process using statistical multilinear regresion analysis [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2010
This paper presents the results of defining the mathematical model which describes the dependence of leaching degree of Al2O3 in bauxite from the most influential input parameters in industrial conditions of conducting the leaching process in the ...
Đurić I., Đorđević P., Mihajlović I., Nikolić Đ., Živković Ž.   +4 more
doaj   +1 more source

Combining ozone and ultrasound technology to remove S2− in Bayer liquor

Ultrasonics Sonochemistry, 2023
High content sulfur (S2−) in Bayer liquor can increase alkali consumption, accelerate equipment corrosion, especially seriously affect alumina production.
Xuxu Wang, Jianfeng Ran, Haisheng Duan, Ying Chen, Jiaping Zhao, Shaohua Yin, Shiwei Li, Libo Zhang   +7 more
doaj   +1 more source

Analysis on Physical and Mechanical Properties of Red Mud Materials and Stockpile Stability after Dilatation

Advances in Materials Science and Engineering, 2018
Red mud is the tailings generated from the production process of aluminum industry and is mainly stacked in open-air at present, so how to ensure the stability of red mud stockpile is very important. Regarding mud stockpile of Guizhou Aluminum Factory as
Yanbo Feng, Chao Yang
doaj   +1 more source

FOVEON VS BAYER: COMPARISON OF 3D RECONSTRUCTION PERFORMANCES [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
The main idea of this particular study was to validate if the new FOVEON technology implemented by sigma cameras can provide better overall results and outperform the traditional Bayer pattern sensor cameras regarding the radiometric information that ...
M. Vlachos, D. Skarlatos, P. Bodin
doaj   +1 more source