characterization and applications of red mud from bauxite processing

COMPOSITION AND CHARACTERISTICS OF RED MUD: A CASE

An alumina refinery built in Tayan, West Kalimantan has a production capacity of 300 thousand tons per year. It means that it will produce red mud or bauxite residue approximately 300 – 350 thousand tons per year and washing residue around 200 thousand tons per year. Right now, it Get price

Study of Red Mud as an Alternative Building Material for

Before the end of the decade of the 1980's red mud became a major concern in world environmental discussions. Red mud is a solid waste product of the Bayer process, the principal industrial means of refining bauxite in order to provide alumina as raw material for the electrolysis of aluminum by the Hall-Heroult Process. Red mud is composed of a mixture of solid and metallic oxide-bearing Get price

Mining and Refining – Bauxite Residue Management

It is primarily composed of the insoluble fraction of the bauxite ore that remains after extraction of the aluminium-containing components. Iron oxides (10 – 30%), titanium dioxide (2 – 15%), silicon oxide (5 – 20%) and undissolved alumina (0 – 20%) make up the residue, together with a wide range of other oxides which will vary according to the initial bauxite source. Get price

bauxite applications

Bauxite tailings Wikipedia. Bauxite tailings, also known as bauxite residue, red mud, red sludge, or alumina refinery residues (ARR), is a highly alkaline waste product composed mainly of iron oxide that is generated in the industrial production of alumina (aluminium oxide, the principal raw material used in the manufacture of aluminium metal and also widely used in the manufacture of ceramics Get price

Characterization of red mud derived from a combined Bayer

Journal of Hazardous Materials 146 (2007) 255–261 Characterization of red mud derived from a combined Bayer Process and bauxite calcination method Yong Liu a, Chuxia Lin a,b,?, Yonggui Wu a b College of Resources and Environment, South China Agricultural University, Guangzhou 510642, China School of Environmental Science and Management, Southern Cross University, Lismore, NSW 2480 Get price

Alumina: Filtration in the alumina production process

Jun 18, 2010Naturally, there is a certain advantage to refining alumina close to the bauxite mining activity, since the red mud can be used to back-fill the mine. However, it is important that the quantity of caustic in the mud is minimised and that the disposal area is sealed to prevent leaching of caustic soda into the surrounding soil. Get price

Recovery of Al2O3, Fe2O3 and TiO2 from Bauxite Processing

Also red mud has been used as building materials [3], catalyst [4], inorganic substrate [5], removal agents [6-8] and absorbent [9-11], but all these applications use low amounts of generated red mud. The use of red mud as secondary resource to recovery Get price

Red mud characterization using atomic and nuclear

The subject of our study is evaluation of the red mud elemental composition, especially yttrium, scandium, gallium and REEs, from an ex-aluminum plant in Obrovac, Croatia, left from the processing of bauxite mined during late 70's and early 80's at the eastern Adriatic coast and stored in open concrete basins for more than 30 years since then Get price

Mechanical Characterization of Red Mud based

strength and behavior of red mud bricks," Jr. of Industrial Pollution Control 33(s2)(2017), pp.1227-1230. [4] V. Cablik, "Characterization and applications of red mud from bauxite processing," Mineral Resource Management 23 (4):29-38, 2007. [5] IS: 2720, Method of test for soils ( Indian Standards Institution, New Delhi,1985) Get price

Characterization and Comprehensive Utilization of Red mud

prepared from NALCO red mud by [11] after hot water leaching filtration, drying and sieving. C. Red mud in the brick industry D.Dodoo- Arhin, et al [12] have been investigated bauxite red mud-Tetegbu clay composites for their applicability in the ceramic brick construction industry as a means of recycling the bauxite Get price

The Red Mud Accident in Ajka (Hungary): Characterization

As a result of a tragic industrial accident, a highly alkaline red mud sludge inundated settlements and agricultural areas near Ajka, Hungary on October 4, 2010. One of the major concerns about the aftermaths of the accident is the potential health effects of vast amounts of fugitive dust from red mud sediment. Thus, we studied the chemical and physical properties of particles of red mud and Get price

The Effect of Time and H2O/CTAB Ratio in Synthesis of

Mesoporous alumina has been successfully synthesized from bauxite residues (red mud) as raw material and cetyltrimethylammonium bromide (CTAB) as template at room temperature. The effects of crystallization time and molar ratio of H 2 O/CTAB on structural and textural properties of mesoporous alumina were investigated. Get price

Effective Utilization Of Bauxite Residue(Red Mud) In Brick

Effective Utilization Of Bauxite Residue(Red Mud) In Brick Making Red mud is a solid residue of bauxite ores digestion with caustic soda for alumina production. Its disposal remains an environmental issue worldwide. A lot of researchers have done extensive work over the past decades to develop various economic ways to use red mud. Get price

Use of Bauxite Residue (Red Mud) as CO2 Absorbent

The large amount of bauxite residue (red mud) -a highly alkaline by-product of the Bayer process of refining bauxite into alumina- has a relevant environmental impact and poses a challenge to the aluminum industry. In particular, the high alkalinity (pH~13) of red mud can cause adverse Get price

MATERIAL COMPOSITION AND PROPERTIES OF RED MUD

Red Mud coming from Tanrai Alumina Processing plant, Lamdong, Vietnam contains high excess alkaline component and many toxic heavy metals. The results showed that Red mud does not contain artificial radioactive isotopes such as 137Cs, 7Be; concentration of Uranium, Thorium in Red mud Get price

BR2020 – REDMUD Conference

This note is an invitation to the 3rd "Bauxite Residue Valorisation and Best Practices" conference that will take place online, from September 29 to October 1, 2020. We would be honoured by your presence there and we would be humbled to accept your scientific contributions, papers or posters alike. Get price

Processing of red mud from alumina production in MAGMA

More than 100 million tons of red mud has been accumulated in Russia to date. The smelting unit MAGMA is applicable for pyro metallurgical processing of red mud by the method of liquid-phase reduction of iron oxides by carbon in one-stage process (Fig. 8), or by two-stage process, in combination with electrical arc furnace. Get price

Re‐using bauxite residues: benefits beyond (critical raw

Bauxite residues (also known as 'red mud', 'Bayer process tailings' or 'bauxite process tailings') are generated from alumina production where bauxite is digested in hot NaOH solution via the Bayer process. 22 The production of 1 tonne of alumina generates between 1 and 1.5 tonnes of bauxite residue. 23 Currently, the yearly global Get price

US3776717A

The red mud by-product of aluminum manufacture is processed by first removing its alkali metal content by causticization of a slurry thereof with burnt lime in the presence of humic acid or derivative thereof. From the remaining solids iron can be recovered such as by reduction and smelting, where the humic acid-containing ingredient, a soft coal, can be utilized for its carbon content. Get price

Characterization of Brazilian Red Mud (Bauxite Refinery

With heating of red mud, the quantity of iron oxide increases. This allows other application to red mud as coagulant, catalyst or Fenton reagent. The heat treatment enables new applications for red mud. Keywords: red mud, aluminium, thermal analysis, characterization. Get price

About – RemovAL

Bauxite Residue (BR) is produced as a red slurry (hence the common term "red mud") from the Bayer process cycle.It is estimated that for each ton of alumina produced 0.9- 1.5 tons of solid residue is generated depending on the initial bauxite ore grade and alumina extraction efficiency. Get price

The effect of bauxite processing residue (red mud

May 01, 2004Effect of application of bauxite residue (red mud) to very sandy soils on subterranean clover yield and P response. Effect of soil amendment with bauxite Bayer process residue (red mud) on the availability of phosphorus in very sandy soils. Deep banding improves residual effectiveness of manganese fertiliser for bauxite residue revegetation. Get price