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The red mud tailings in Pingguo, Guangxi is of high water content and void ratio. The present paper takes the red mud aluminiferous tailings in Pingguo, Guangxi as prototype.
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Red mud is a highly alkaline solid waste discharged in the alumina production process. Because of its large amount of discharge and high alkalinity, it is mostly stored in dams, occupying a large ...
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Keywords: red mud; resources recovery; industrial utilization progress; construction materials; Fe extraction 1. Introduction Aluminum, as one of the most abundant metal elements on the earth, is widely used due to its excellent properties and huge bauxite reserves, of which global bauxite resources are estimated to be between 55 and 75 billion ...
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The disposal of red mud (RM), a waste material generated by the aluminum industry, remains a global environmental concern because of its high alkalinity and smaller particle size, which …
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A new kind of alkali–slag–red mud cementitious (ASRC) material, with both high early and ultimate strength and excellent resistance against chemical attacks, has been developed by the ...
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Red mud is a red, slurry-like waste produced by the alumina industry. The expansion of the alumina sector has significantly increased red mud production in recent years. Owing to its complex composition and high alkalinity, red mud poses serious risks of environmental degradation and causes resource wastage if left unmanaged. The comprehensive utilization of …
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The chosen study area contains residues from the extraction of aluminum from bauxite in a mud pond (i.e. the red mud), which contain high concentrations of contaminants such as heavy metals, so ...
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Red mud produced in the Bayer process is a hazardous solid waste because of its high alkalinity; however, it is rich in valuable components such as titanium, iron, and aluminum.
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Similarly, in January 2018, another disaster occurred in Belem, Brazil. A powerful rain caused red mud storage overflows, contaminating soil and threatening drinking water by high levels of lead and aluminium [55]. The red mud also can be converted into a dry cake as pressure filters reduce its moisture content.
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Abstract: Red mud is a strong alkaline solid waste pollutant produced in the process of aluminum smelting, which causes great pollution to the regional groundwater environment due to its high
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One year later, damaged buildings have been razed, much of the land has been cleaned up, and MAL Hungarian Aluminum has been fined $647 million (472 million euros) for …
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Abstract: Red mud (RM) is a waste material obtained during the production of aluminum from bauxite minerals. RM causes environmental pollution due to its high alkaline properties.
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Red mud is a solid waste in the production process of Al 2 O 3 using the Bayer process, and most of it is discarded in the storage yard, which not only causes the waste of …
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The effects of red mud on the microstructures and high-temperature tensile properties of the ZL109 aluminum alloy have been investigated. Red mud/ZL109-based composite materials with added red mud ...
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This study provides a comprehensive evaluation of red mud as a sustainable material for road base construction, particularly in combination with bottom ash. Red mud, a by-product of the Bayer process used in alumina extraction, is known for its high alkalinity and heavy metal content. For this reason, this waste material causes environmental challenges. Red mud …
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If the aluminum-to-silicon ratio in red mud is 1.4, the aluminum-to-silicon ratio in the original bauxite needs to be greater than 7 to achieve an 80% alumina dissolution rate. On the other hand, if the aluminum-to-silicon ratio in red mud is reduced to 0.4, an aluminum-to-silicon ratio of 2 in bauxite is sufficient to achieve an 80% ...
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the solid red mud, while a maximum thickness of 1 metre was allowed. Less fluid would cause less damage (Jávor and Hargitai, 2011: 53). 3. The MAL previously reached an agreement with the authorities, which stated that the red mud pond …
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Red mud, a voluminous industrial waste produced during the Bayer process in the alumina industry, has numerous application possibilities across various fields. Its potential uses are diverse, ranging from the construction industry and metallurgy to environmental protection and agriculture. There are three main aspects of red mud utilization.
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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 …
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Authorities have pledged to find the causes of a land collapse close to the red mud reservoir of Nhan Co Alumina Factory in Dak R'lap District of the Central Highlands province of Dak Lak, reported online newspaper vietnamplus.vn.
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"red mud," waste that contains toxic and radioactive substances. Given projected growth in aluminum demand, ten billion tons of red mud could pile up worldwide by 2050.
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With worldwide aluminium production constantly growing, the buildup of red mud presents considerable environmental issues due to its alkalinity, heavy metal concentration, …
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The disposal of red mud (RM), a waste material generated by the aluminum industry, remains a global environmental concern because of its high alkalinity and smaller particle size, which have the potential to pollute air, soil, and water. Recently, efforts have been made to develop a strategy for reusing industrial byproducts, such as RM, and turning waste into value-added products.
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Currently, the pollution caused by heavy metals is an emerging concern due to its destructive effects on humans, even at a very low concentrations.[1] ... Red mud (aluminum industrial waste): An ...
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1. Introduction. Bayer red mud (RM) is a kind of strong alkaline solid waste discharged in the process of alumina production; about 1–2 tons of RM will be discharged per ton of alumina production [1,2,3].At present, the annual discharge of RM has exceeded 100 million tons in China, which is mainly disposed of by damming, and the comprehensive utilization rate …
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The red mud accident of October 4, 2010, in Ajka (Hungary) contaminated a vast area with caustic, saline red mud (pH 12) that contains several toxic trace metals above soil limits.
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In 2021, global alumina production reached over 135 million tons and discharged approximately 200 million tons of red mud, leading to severe environmental safety hazards. …
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The effects of red mud on the microstructures and high-temperature tensile properties of the ZL109 aluminum alloy have been investigated. Red mud/ZL109-based composite materials with added red mud (a major byproduct of the aluminum industry), which has been coated with nickel by chemical deposition, have been prepared through gravity casting. The …
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Zhongzhou Aluminum multi-year sintering of red mud The accumulated red mud has reached 19 million m3. A large number of red mud not only occupy a large area of ??farmland and hills, …
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Numerous researchers have conducted extensive studies on the comprehensive utilization of bauxite residue. Data analysis from Web of Science indicates a rapid increase in the number of publications related to bauxite residue in recent years, with citation frequencies also rising sharply since 2017 (Fig. 1 a), surpassing 20,000 in 2021.This trend suggests that the …
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