NDLI: Thermogravimetric study of the dehydration and reduction of red mud

Please wait, while we are loading the content...

Effect of directional solidification on the structure and properties of Ni$_{3}$Al-based alloy single crystals alloyed with Cr, Mo, W, Ti, Co, Re, and REM

Effect of the composition of Al-Li alloys on the quantitative relation between the δ′(Al$_{3}$Li), S$_{1}$(Al$_{2}$MgLi), and T$_{1}$(Al$_{2}$CuLi) phases

Isothermal section of the Cu-In-Pd system at 800°C

Comparison of the efficiency of effect of rare-earth-based intermetallic additions on the properties of the sintered magnets prepared from a Nd-Fe-Ti-Cu-B base alloy

Structure of alloy V1469 sheets with high fracture toughness characteristics

Effect of the surface charge density on the creep of copper

Evolution of the dendrite structure of a copper-based metallic composite material during heat and thermomechanical treatment

Russian Metallurgy (Metally) : Volume 2014

Russian Metallurgy (Metally) : Volume 2013

Russian Metallurgy (Metally) : Volume 2012

Russian Metallurgy (Metally) : Volume 2011

Russian Metallurgy (Metally) : Volume 2010

Russian Metallurgy (Metally) : Volume 2009

Russian Metallurgy (Metally) : Volume 2008

Russian Metallurgy (Metally) : Volume 2007

Russian Metallurgy (Metally) : Volume 2006

Thermogravimetric study of the dehydration and reduction of red mud

Content Provider	Springer Nature Link
Author	Teplov, O. A. Korevskii, N. L. Lainer, Yu. A.
Copyright Year	2015
Abstract	The processes of drying and reduction of red mud in the pure state and with coal additions in vacuum or in gaseous media (helium, hydrogen) have been experimentally studied by thermogravimetry using a Setaram TAG24 thermogravimetric analyzer. The minimum total weight loss (∼20%) is observed for red mud samples without additives in forevacuum, and the maximum loss (∼38%) is detected in samples with coal. It is demonstrated that, for this type of red mud with iron oxide Fe$_{2}$O$_{3}$, water molecules are bonded in the form of iron hydroxide Fe$_{2}$O$_{3}$ · 3H$_{2}$O rather than goethite FeOOH. The peak of magnetite formation is observed in differential thermogravimetry (DTG) curve in the range 270–400°C. The simulation of the magnetite dehydration and formation rates under experimental conditions in the relevant temperature ranges agrees with the experimental data. A peak of wustite formation in hydrogen above ∼600°C is recorded in a DTG curve, and the removal of one-third of sodium oxide, which is likely not to be fixed into strong sodium alumosilicate, is observed in the range 800–1000°C. The peak detected in the DTG curve of the mud with charcoal in helium in the range 350–450°C is similar to the peak of hematite reduction in magnetite in a hydrogen atmosphere. The most probable source of hydrogen-containing gases in this temperature range consists of the residual hydrocarbons of charcoal. The reduction reactions of disperse iron oxides with coal proceed only at temperatures above 600°C. These processes occur in the same temperature range (600–900°C) both in forevacuum and in a helium atmosphere. It is experimentally demonstrated that sintering process occurs in the mud in the temperature range 450–850°C.
Starting Page	12
Ending Page	18
Page Count	7
File Format	PDF
ISSN	00360295
Journal	Russian Metallurgy (Metally)
Volume Number	2015
Issue Number	1
e-ISSN	15556255
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-05-06
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Reduction of iron oxides during the pyrometallurgical processing of red mud

Rate of the reduction of the iron oxides in red mud by hydrogen and converted gas

Adsorption of dichromate ions on the red mud surface

Properties and mechanism of red mud in preparation of ultra-lightweight sludge-red mud ceramics

Thermogravimetric and mass spectrometric studies of the reduction of iron niobate by carbon

Synthesis of modified polyacrylamide with high content of hydroxamate groups and settling performance of red mud

Effect of sulfur compounds on the decomposition of carbon monoxide on red mud

Plasma plants for the melting and reduction of metals

Physical aspects of the solid-phase reduction of metals

Thermogravimetric study of the dehydration and reduction of red mud

Similar Documents

Reduction of iron oxides during the pyrometallurgical processing of red mud

Rate of the reduction of the iron oxides in red mud by hydrogen and converted gas

Adsorption of dichromate ions on the red mud surface

Properties and mechanism of red mud in preparation of ultra-lightweight sludge-red mud ceramics

Thermogravimetric and mass spectrometric studies of the reduction of iron niobate by carbon

Synthesis of modified polyacrylamide with high content of hydroxamate groups and settling performance of red mud

Effect of sulfur compounds on the decomposition of carbon monoxide on red mud

Plasma plants for the melting and reduction of metals

Physical aspects of the solid-phase reduction of metals

Thermogravimetric study of the dehydration and reduction of red mud