Extraction of titanium dioxide& production of …
The chemical curing mechanism of modified red mud-based stabilized soil includes hydration reaction, pozzolanic reaction, promotion effect of nano-SiO2, and enhancement effect of gypsum.
(PDF) Extraction of titania from red mud
PDF | On Jan 1, 1991, B.K.Padhi and others published Extraction of titania from red mud | Find, read and cite all the research you need on ResearchGate ... Extraction,Titanium dioxide, Building ...
Sustainable recovery of titanium from secondary resources: …
In general, titanium extraction needs to be adjusted according to the different properties of red mud. In the titanium recovery from red mud, all kinds of process routes have a certain recovery capacity, but most of their recovery methods are not economical due to the problems of large investment, high energy consumption, and high cost.
Extraction of Titanium dioxide from Red Mud
Download Citation | On Aug 26, 2014, D. Swarup and others published Extraction of Titanium dioxide from Red Mud | Find, read and cite all the research you need on ResearchGate
Titanium leaching from red mud by diluted sulfuric acid at …
The red mud was calcined in reducing atmosphere at 800–900 °C and chlorinated at 500 °C to obtain chloride of alumina [13]. Ercag and Apak mixed the red mud with dolomite and coke, pelletized and sintered the mixture at 1100 °C, and finally smelted it at 1550 °C to produce pig iron and a slag containing titanium [14].
A new route for separation and recovery of Fe, Al and Ti from red mud
Red mud (RM) is a waste generated from Bayer process to extract alumina at an approximately rate of 0.8–1.5 tons per ton of alumina produced, and reaches about 120 million tons/a in the world (Zhang et al., 2011; Zhu et al., 2015).As main disposal of the red mud stacking or landfill not only does certain harm to the natural environment, but also wastes precious …
Summary of research progress on separation and extraction …
Sulfuric acid is the most applicable acid for hydrometallurgical extraction of titanium dioxide from red mud because titanium dioxide can react with sulfuric acid to produce soluble TiOSO 4 (Zou et al. 2021). Nonetheless, to improve the purity of titanium dioxide, other elements in the red mud are generally leached with hydrochloric acid first ...
Gallium extraction from red mud via leaching with a weak …
Gallium and vanadium extraction from red mud of Turkish alumina refinery plant: hydrogarnet process. Hydrometallurgy, 157 (2015), pp. 72-77. View PDF View article View in Scopus Google Scholar. ... Enrichment of titanium dioxide in red mud: a kinetic study. Hydrometallurgy, 53 (1999), pp. 73-87.
Summary of research progress on separation and …
In the Bayer process, the alumina is dissolved by the alkali solution (the mother solution) from the bauxite at high temperature to form sodium aluminate solution. Nevertheless, the oxides of iron, silicon, calcium, and …
Extraction of Titanium dioxide from Red Mud
(1945). Extraction of Titanium dioxide from Red Mud. Transactions of the Indian Ceramic Society: Vol. 4, No. 2, pp. 75-80.
Extraction of Valuable Elements from Red Mud with a …
Bauxite residue, known as red mud, is a by-product of alumina production using the Bayer process. Currently, its total global storage amounts to over 4.6 billion tons, including about 600 million tons in Russia. The total global storage of red mud occupies large areas, leading to environmental damage and increasing environmental risks. Moreover, it contains a significant …
[PDF] Comprehensive examination of acid leaching …
Semantic Scholar extracted view of "Comprehensive examination of acid leaching behaviour of mineral phases from red mud: Recovery of Fe, Al, Ti, and Si" by R. A. Pepper et al. ... In this study the extraction of titanium from bauxite residue (red mud) with 2 step acid leaching was proposed. ... Enrichment of titanium dioxide in red mud: a ...
A Mineralogical Assessment on Residues after Acidic …
Numerous methods have already been studied for hydrometallurgical treatment of red mud, especially for the recovery of various metallic components such as iron, aluminum, titanium or rare earth elements. This study focuses on the extraction of titanium from red mud and in particular the mineralogical changes, induced by leaching.
Recovery of scandium from red mud by leaching with titanium white waste
Basic red mud and titanium white waste acid are both industrial wastes and contain a certain amount of Sc. As such, Yu et al., Fan et al., and Yang et al. reported the leaching of red mud using TWWA to obtain high-concentration Sc leachate (Fan et al., 2014; Yang et al., 2015a; Yu, 2017). However, the high leaching efficiency of Si through the ...
Applications – Red Mud Project
D. Luo and J. Liu, New process of utilizing red mud from aluminum treating plant to produce high quality direct-reduction iron, China Mining 11 (2002), pp. 50–53 (in Chinese) Recovery of titanium dioxide, vanadium, rare earths. Bibliography. F. Vilem, "Production of Vanadium Slag from Bauxite Red Mud," Technical Digest, pp. 443-44, (1967)
Reclamation of reactive metal oxides from complex minerals …
Considering the limitations of the Bayer process, increasing demand on energy in the aluminium industry and tighter environmental regulations related to the disposal of red mud, the results from the alkali-based roasting process for the extraction of alumina from red mud and bauxite are described in section 7.3.3. 5. Extraction of titanium dioxide
Review of Technologies in the Recovery of Iron, …
the mixture of red mud and soft coal prior to direct reduction. A recovery of 95.7% of Fe was achieved after grinding, sintering and magnetic separation. Through the simultaneous metals recovery route, Liu et al.25 used a soda-lime reductive roasting process prior to leaching and magnetic separation of the fine red mud (< 75 µm).
Integration of CO2 sequestration with the resource recovery of red mud …
Note that the Ti-rich product serves as a high-quality raw material for titanium dioxide production ... 378.0 μ g/g), facilitating the subsequent extraction of Sc and manufacture of iron-red pigments, in addition to other applications. ... Process optimization for integrated mineralization of carbon dioxide and metal recovery of red mud. J ...
Microwave acid baking of red mud for extraction of titanium …
The recovery of valuable metals present in the red mud is investigated through the microwave acid baking–water leaching process. The titanium and scandium dissolution during the leaching stage were optimized using the statistical design of experiments by varying microwave power, exposure time, and acid ratio. Microwave power is the governing factor for heating the …
Furnace smelting and extractive metallurgy of red mud: …
Turkish red mud (bauxite waste) has been mixed with dolomite and coke, pelletized and sintered at 1100°C, and finally smelted at 1550°C to produce pig iron and a slag. ... Silica and Al 2 O 3 were recovered from the remaining aqueous solution, while the organic extract was stripped with 10% Na 2 CO 3 solution, ... The titanium recovery ...
Separation and recovery of scandium and titanium from red …
Compared with the traditional extraction procedure of scandium in red mud, this new method has the advantages of high precipitation efficiency of titanium and low scandium …
Extraction and Recovery of Valuable Elements in the Red Mud
Red mud is a strong basicity solid waste residue of the digestion of bauxite ores with caustic soda for alumina production. This paper gives a overview of the basic characteristics of red mud and also puts great emphasis on the recycling technologies both at home and abroad, which mainly deal with those valuable metals come from red mud, such ...
Efficient Selective Extraction of Scandium from Red …
recovered from titanium dioxide waste liquid, red mud (baux- ite residue), tungsten acid slag, and so on, the production, and application of scandium is also greatly restricted (Xiao et al.
Extraction of Iron values from Red mud
Alkali oxides and metal hydroxides react with carbonic acid formed by the bubbling of carbon dioxide in red-mud slurry to give respective carbonates and bicarbonates which are neutral in nature and 17066 Agrawal et al. / Materials Today: Proceedings 5 (2018) 17064â€"17072 reduce the pH value of the substrate.
A critical review on separation and extraction of scandium …
In the keyword word frequency heat map (Fig. 1 (a)) and its co-occurrence relationship charts(Fig. 1 (b)), various industrial by-products, such as bauxite slag, red mud and titanium dioxide waste liquid had been in concern of the researchers as the sources of scandium [24], [25], the extraction of scandium mainly focused on the leaching of ...
Furnace smelting and extractive metallurgy of red mud: …
Silica and Al 2 O 3 were recovered from the remaining aqueous solution, while the organic extract was stripped with 10% Na 2 CO 3 solution, finally hydrolysed and calcined to …
Extraction of Titanium, Aluminum, and Rare Earth Values …
The material balance indicates that acid baking of 1 kg red mud containing 0.094 kg titanium and 60 g t⁻¹ scandium yielded 0.27 kg residue containing 0.12 kg iron, 0.026 kg titanium, and <10 g ...
Separation and recovery of titanium and scandium from the red mud
DOI: 10.1016/j.seppur.2023.123882 Corpus ID: 258271432; Separation and recovery of titanium and scandium from the red mud @article{Habibi2023SeparationAR, title={Separation and recovery of titanium and scandium from the red mud}, author={Hossein Habibi and Mohammad Mokmeli and Sina Shakibania and Dorna Piruzian and Ziaeddin Pourkarimi}, …
Recovery of Titanium from Red Mud Using Carbothermic …
This paper presents a novel approach (Figure1) for the utilization of red mud through the combination of carbothermic reduction and high-pressure autoclave leaching to recover …
Selective separation of aluminum, silicon, and titanium from red mud
Red mud (RM), also known as bauxite residue, is an alkaline industrial solid waste derived during the Bayer process for extracting alumina from bauxite ores (Borra et al., 2016).Generally, the production of 1 ton of alumina generates approximately 1–1.5 tons of RM depending on the raw material quality and process parameters (Taneez and Hurel, 2019; …