Results 261 to 270 of about 24,865 (304)

Research on Bayer Red Mud Slurry Electrolysis

Bulletin of Environmental Contamination and Toxicology, 2022
The Bayer red mud is the solid waste generated during the production of alumina by the Bayer process. At present, the stock of red mud in China exceeds 1.1 billion tons, covering an area of more than 120,000 mu, and the annual production volume is increasing by 100 million tons.
Shengnan, Lin, Tingan, Zhang, Boran, Zhang, Xi, Chao   +3 more
openaire   +2 more sources

From “red mud” to Bauxaline

2023
La bauxita, utilizada para fabricar alúmina y aluminio, es uno de los recursos naturales cruciales de nuestras sociedades industriales contemporáneas. Pero el tratamiento de la bauxita genera residuos cargados de metales pesados y materiales radiactivos: «el barro rojo». Tras varios experimentos infructuosos desde finales del siglo XIX para recalificar
Le Berre, Sylvain, Goujon, Valentin, Banos, Vincent   +2 more
openaire   +1 more source

Phase Constitution During Sintering of Red Mud and Red Mud–Fly Ash Mixtures

Journal of the American Ceramic Society, 2005
The phase constitution during the sintering of pure red mud and red mud–fly ash mixtures was studied in the temperature range of 900°–1250°C. The phases formed at different sintering temperatures were analyzed by X‐ray powder diffraction.
Srinivasan Srikanth, Ajay Kumar Ray, Amitava Bandopadhyay, Bandari Ravikumar, Animesh Jha   +4 more
openaire   +1 more source

Deactivation of red mud and modified red mud used as catalyst for the hydrodechlorination of tetrachloroethylene

1999
Abstract In this work, the deactivation of sulfided red mud and sulfided catalysts based on red mud was studied for the hydrodechlorination of tetrachloroethylene. Activity curves were obtained in a fixed bed reactor at 350°C, 100 bar and 0.8 Nl/min of hydrogen.
openaire   +1 more source

Hydrothermal treatment of red mud

Journal of Materials Science Letters, 1985
Red mud is a by-product of the Bayer process for an extraction of alumina from bauxite ore. The main constituents are Fe203, Al203, TiOe, SiO2 and Na20. Though red mud contains very effective resources as a raw material for the metallurgical industry, it has been concentrated in a large pond and has not been utilized except for limited use as a ...
K. Kodaira, M. Higuchi, S. Shimada, T. Matsushita, A. Tsunashima   +4 more
openaire   +1 more source

Red Mud Stacking

2016
The red mud slurry “stacking” method used in many Alcan Plants has been developed in the 1980’s. The aim of this technique is to use minimum space for the disposal of the residue and to rapidly obtain consolidated material. The consistency of the mud slurry plays a key role in the steepness (angle) of the stacking slope.
openaire   +1 more source

Effect of Acidic Surface Treatment of Red Mud on Mechanical Interfacial Properties of Epoxy/Red Mud Nanocomposites

Journal of Colloid and Interface Science, 2002
In this work, red mud (RM) was chemically modified by 0.1, 1, and 5 M H(3)PO(4) solution to prepare epoxy/RM nanocomposites. The effect of chemical treatment on a RM surface was studied in terms of pH, acid-base values, N(2)/77 K gas adsorption, equilibrium spreading pressure (pi(e)), and surface free energy.
Soo-Jin, Park, Dong-Il, Seo, Changwoon, Nah   +2 more
openaire   +2 more sources

Red mud

Marine Pollution Bulletin, 1974
K.W. Wilson, R.A.A. Blackman
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Study on dealkalization and settling performance of red mud

Environmental Science and Pollution Research, 2016
At present, the dealkalization and comprehensive utilization of red mud is a worldwide problem. Studies on the settling performance and phase transformation of red mud by HCl, CaO, and H2O leaching are limited. In this study, the characteristics of red mud were systematically analyzed.
Muxi, Luo, Xuejiao, Qi, Yurui, Zhang, Yufei, Ren, Jiacheng, Tong, Zining, Chen, Yiming, Hou, Nuerxiate, Yeerkebai, Hongtao, Wang, Shijin, Feng, Fengting, Li   +10 more
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PYROMETALLURGICAL PROCESSING OF RED MUD

Metallurg
Высокожелезистый красный шлам Байера, содержащий более 30% железа, считается бедной железной рудой. В связи с глобальным дефицитом железа во всем мире в последние десятилетия все большее внимание привлекает вопрос о том, как эффективно использовать железо, содержащееся в красном шламе с высоким содержанием железа.
N. V. Vasyunina, I. V. Dubova, K. E. Druzhinin, T. R. Gilmanshina   +3 more
openaire   +2 more sources