Extraction of Iron values from Red mud

Agrawal, Shrey; Rayapudi, Veeranjanayulu; Dhawan, Nikhil

doi:10.1016/j.matpr.2018.04.113

Cited by 32 publications

(9 citation statements)

References 15 publications

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“…It is highly corrosive in nature. The fine particles are toxic and dangerous to the surroundings [114]. Such industrial wastes have no proper disposal methods and are dumped into the environment where they affect the atmosphere.…”

Section: Influence Of Filler Particles On Spementioning

confidence: 99%

A critical review on erosion wear characteristics of polymer matrix composites

Boggarapu

Raghavendra

Ojha

2020

Mater. Res. Express

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Polymer matrix composites (PMCs) are extensively known for their higher strength and stiffness at lower weight compared to traditional materials. They are extensively used in numerous engineering applications. Utilization of these materials had been extended to novel areas where it is essential to study their tribological performance. Several research works reported the tribological performance of polymer composites. The aim of the review is to provide broad information on erosion behaviour of polymeric composites. Attention is paid towards the effect of test parameters i.e. impact velocity, erodent characteristics, impingement angle on the erosion wear rate and their failure mechanisms were discussed. Inclusion of various fillers in to polymeric composites enriched the erosion resistance property that attracted the researchers to find out their application. However limited literature were available on the erosion behaviour of particle filled composites. Hence, another objective is to review available literature on the erosion response of filled composites.

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Section: Influence Of Filler Particles On Spementioning

confidence: 99%

A critical review on erosion wear characteristics of polymer matrix composites

Boggarapu

Raghavendra

Ojha

2020

Mater. Res. Express

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“…There were a lot of efforts to recycle red mud by numerous methods. Many studies investigated extraction of valuable components [7][8][9] with a particular focus on iron [10,11] as a major red mud 2 of 23 component [12] and rare-earth metals [13][14][15][16] as a critical material for many important technologies [17]. A common approach involves utilization of red mud in construction industry [18], namely in production of cement [19], concrete [20], bricks [21,22], geopolymers [23], etc.…”

Section: Introductionmentioning

confidence: 99%

Influence of Sodium Sulfate Addition on Iron Grain Growth during Carbothermic Roasting of Red Mud Samples with Different Basicity

Grudinsky

Zinoveev

Pankratov

et al. 2020

Metals

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Red mud is an iron-containing waste of alumina production with high alkalinity. A promising approach for its recycling is solid-phase carbothermic roasting in the presence of special additives followed by magnetic separation. The crucial factor of the separation of the obtained iron metallic particles from gangue is sufficiently large iron grains. This study focuses on the influence of Na2SO4 addition on iron grain growth during carbothermic roasting of two red mud samples with different (CaO + MgO)/(SiO2 + Al2O3) ratio of 0.46 and 1.21, respectively. Iron phase distribution in the red mud and roasted samples were investigated in detail by Mössbauer spectroscopy method. Based on thermodynamic calculations and results of multifactorial experiments, the optimal conditions for the roasting of the red mud samples with (CaO + MgO)/(SiO2 + Al2O3) ratio of 0.46 and 1.21 were duration of 180 min with the addition of 13.65% Na2SO4 at 1150 °C and 1350 °C followed by magnetic separation that led to 97% and 83.91% of iron recovery, as well as 51.6% and 83.7% of iron grade, respectively. The mechanism of sodium sulfate effect on iron grain growth was proposed. The results pointed out that Na2SO4 addition is unfavorable for the red mud carbothermic roasting compared with other alkaline sulfur-free additives.

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“…During past several decades, researchers have been working on developing environmentally applicable and cost-effective methods to solve the problems involved in RM utilization. Up to today, RM were mainly studied in many ways, including: (1) manufacturing construction materials, such as cement and concrete [24][25][26], brick [27][28][29], ceramic [30][31][32] and pavement [9,33]; (2) removing heavy metals from wastewater solutions [34,35]; (3) extracting valuable metals from RM, such as Fe [36], Ti [37] and Al [38]; (4) producing various catalysts [39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Progress on the Industrial Applications of Red Mud with a Focus on China

et al. 2020

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Red mud (RM), also called bauxite residue, is a strong alkaline industrial waste generated during the alumina production process. The annual production of RM in China is large, but its average utilization rate is low (only 4%). High generation and low consumption make the disposal of RM mainly by stockpiling, which has caused serious heavy metal pollution and radioactive contamination. In this paper, the various industrial utilization methods of RM in China during the past 60 years have been introduced. Moreover, some recent industrial progresses were referred. The results show that RM can be widely used in building materials, valuable metals extraction, and some novel utilization methods, such as silica-calcium fertilizer, inorganic polymer material and desulfurizer. Most of the industrial utilization methods of RM have been used until now and some successfully applied to other aluminum plants, providing some feasible routes for a large amount utilization of RM. Some industrial utilization methods (such as oil well cement and calcium silicon fertilizer) have not been used due to some problems that cannot be ignored, but it provided a lot of valuable experience and was helpful for the subsequent RM utilization. Moreover, some novel and feasible RM utilization methods were proposed and successfully industrialized, which showed that RM has a broader application prospect. Many actual practices showed that the best way to safely dispose of RM was to develop technology that could consume large amounts of RM or transform it into secondary resources, which may need more time and effort.

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Extraction of Iron values from Red mud

Cited by 32 publications

References 15 publications

A critical review on erosion wear characteristics of polymer matrix composites

A critical review on erosion wear characteristics of polymer matrix composites

Influence of Sodium Sulfate Addition on Iron Grain Growth during Carbothermic Roasting of Red Mud Samples with Different Basicity

Progress on the Industrial Applications of Red Mud with a Focus on China

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