Alkali-hydrothermal activation of tailings with red mud as a

Red mud exhibited a strong prompting effect for the tailings activation through the alkali supplementation. As such, the red mud-doped activated tailings show lower relative …

Removal, conversion and utilization technologies of alkali …

The strong alkalinity of red mud is a primary challenge limiting its effective utilization. This study systematically analyzes the composition and characteristics of alkaline components …

Removal, conversion and utilization technologies of alkali …

This study systematically analyzes the composition and characteristics of alkaline components in red mud, emphasizing the roles of soluble free alkali and chemically bound alkali in regulating …

Utilization of Red Mud as a Source for Metal Ions—A Review

The alkaline nature of red mud and dried-up dust disposable to the environment could be minimized by spraying water on the dry red mud powders. ... The composition shows the …

Characteristics – Red Mud Project

Under the alkaline oxidative conditions existing in the Bayer process, they break down to more simple compounds such as the sodium salts of succinic, acetic and oxalic acids. Predominant among these salts is sodium …

Red Mud

Red mud is a highly alkaline waste, with pH ranging from 10 to 13 (Liu et al., 2007b). It is mainly composed of fine particles (90% of its particles by volume are less than 75 μm; Snars and …

Properties, hazards and valuable metal recovery technologies of red mud

An experiment to study the toxic elements contained in red mud by fractionation and formation procedures demonstrated the presence of a considerable quantity of toxic, highly …

Recovery of valuable metals from red mud: A comprehensive review

Abstract:

Red mud (RM) is the major waste material with strong alkaline discharged which is during the alumina extraction process. The global stock of RM has …

Study on occurrence form and solidification mechanism of alkaline

The results show that: (1) The alkaline components in the red mud are mainly Na components, and the soluble Na components are mainly in the form of NaHCO3 and Na2CO3, …

Carbon capture and mineralisation using red mud: A systematic …

Red mud (RM), also known as bauxite residue, is a solid waste or industrial by-product (IBP) produced during the alumina extraction process from bauxite ore (Archambo and …

Red mud recycling by Fe and Al recovery through the

The red mud was collected from an aluminum industry using the Bayer technique. Firstly, an XRD characterization was performed to investigate its components. As shown in …

Bauxite residue (red mud) treatment: Current situation and …

Alkaline minerals (combined alkali) gradually release alkaline components, establishing a strong pH buffer zone and determining the content of alkaline anions and their …

Summary of research progress on separation and extraction of …

In the industrial production of alumina, there are three main production methods: the Bayer process, sintering process, and combined process (Liu et al. 2014a).The Bayer …

Summary of Research Progress on Metallurgical Utilization

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 …

Microstructure and Key Properties of Phosphogypsum-Red Mud …

Red mud is a reddish brown alkaline industrial waste discharged during the process of refining alumina from bauxite ; its main components are Fe 2 O 3, Al 2 O 3, SiO 2, NaO 2, …

Enhanced CO2 sequestration in red mud slurry via ultrasonic

Red mud (RM) is generated during the production of alumina from bauxite as very fine particles of strongly alkaline solid waste. For every ton of alumina produced, approximately 0.8 to 1.5 tons …

Mineral composition of red mud (%, ω) [5].

Red mud is a bauxite industrial waste of reddish-brown mud with high alkalinity. Red mud has relatively high silica and alumina content, so it can be utilized as a raw material in the...

Properties and Assessment of Applications of Red Mud (Bauxite …

Abstract In order to conserve natural resources and prevent waste generation, effective utilization of industrial wastes and/or by-products for beneficial engineering …

Geochemical Characteristics and Toxic Elements in Alumina …

Red mud has strong alkalinity and salinity, with heavy metal elements, including arsenic (As), lead (Pb), zinc (Zn), copper (Cu), nickel (Ni), chromium (Cr), and vanadium (V). The salinity and …

Enhanced performance of red mud oxygen carrier for chemical …

Among, Red mud (RM), a by-product of bauxite processing through the Bayer process, exhibits characteristics of strong alkalinity (pH 10–14), a large quantity, and complex …

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 …

Alumina Extraction from Red Mud by Magnetic Separation

Red Mud from domestic alumina plant contains high excess alkaline components and traces of many toxic heavy metals. The results showed that Red Mud contains as main components …

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

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 …

Rapid Evaluation of the Pozzolanic Activity of Bayer Red Mud by …

Bayer red mud (RM) is a kind of strong alkaline solid waste discharged in the ... Ltd, Beijing, China. Deionized water was made in the laboratory. An XRF was used to analyze the main …

Characteristic, hazard and iron recovery technology of red mud

Generally,the main chemical components of RM include Al 2 O 3, Fe 2 O 3, SiO 2, TiO 2, ... (Zhang et al., 2020), and the highly alkaline red mud could cause severe chemical …

An Eco-Friendly Acid Leaching Strategy for Dealkalization of Red Mud …

The alkaline components in red mud represent one of the crucial factors restricting its application, especially for the construction and building industry. ... Therefore, the main reason accounting …

Material properties and environmental implications of red mud

Red mud, an alkaline waste from bauxite refining, takes up land and poses environmental risks from its storage. This study examines red mud treatment, assessing blast …

Study on occurrence form and solidification mechanism of …

such as 732 H-type cation exchange resin, sodium humate, chitosan, and hydroxyapatite on the alkaline components, was explored through ICP-OES, XRD, SEM–EDS, et al. The results …

Characteristic, hazard and iron recovery technology of red mud

Red mud (RM) is the major waste material with strong alkaline ... RM is widely considered to be a potential resource due to its high content of valuable metal components …

The composition, recycling and utilisation of Bayer red mud

After the alumina refining procedure is complete, it has been demonstrated that the red mud is comprised of components from the bauxite residues as well as some other …