Bauxite residue (BR), also known as red mud, is the major solid waste generated in the process of alumina extraction from bauxite ores. It is estimated that 1 to 2 tons of bauxite residue is generated per ton of alumina produced, leading to a global production of 100 to 150 million tons annually ( Klauber et al., 2011 ).

The Western Ghats, one of the 34 global biodiversity hotspots, retain more than 30 % of all plant, fish, herpetofauna, and mammal species found in India. This ecologically sensitive and fragile region in Kolhapur district has now been subjected to developmental activities such as dams, mining, road construction, sugar industries, etc. Bauxite mining is one …

L'alumine, les boues rouges, la bauxite, inspirent nos chercheurs régionaux. Dans le cadre de l'appel annuel à projets de recherche du Labex DRIIHM pour le réseau des observatoires hommes ...

Bauxite reaction residue (BRR) produced from the poly-aluminum chloride (PAC) coagulant industry is a solid acidic waste that is harmful to environment. A low temperature synthesis route to convert the waste into water glass was reported. Silica dissolution process was systematically studied, including the thermodynamic analysis and the influence of …

The study area includes 8 ongoing, 4 potential and 1 abandoned bauxite mining sites in the Kolhapur District (Figur e 1, Table 1). Total Rainfall (2003-2012) in mm Sr. No. Bauxite mining sites Max Min Mean MSL in m Mining Area in Ha 1 Mine Site 1, Taluka.-. Shahuwadi 3450.5 1620.6 2199.3 1022 776.78 2 Mine Site 2,Udgiri, Tal.-.

Bauxite samples added CaO and Na 2 CO 3 were calcined at 900 ºC. Alumina extraction studies were performed for 20, 40, 60, 80 minutes of calcination time and 15, 30, 45, 60 minutes of leach time ...

Bauxite is a sedimentary rock mineral that is the primary source of aluminum. It is formed through the weathering of aluminum-rich rocks in tropical and subtropical regions. The name bauxite is derived …

to determine the mineralogical set-up of the Kolhapur bauxite. The samples were obtained by the senior author from seventeen different pits dug to an average depth of 17' in a 30 …

The total lease area for mining is 85ha. The exploitable reserves of bauxite at Jerrila Block I are estimated at around 6.8 million tones. M/s APMDC now proposes to produce around 0.5 million tonne per year with opencast mechanized operations. The ore is suitable for extraction of alumina and manufacture of aluminium metal.

A calcium aluminate (CA) slag of modelled composition, originating from the reductive smelting of Greek bauxite residue (BR) from the Aluminium of Greece facility, was hydrometallurgically treated with a Na2CO3 solution, with a 5% S/L ratio, for Al extraction. 60-minute leaching tests were performed at atmospheric pressure and a temperature …

Dr.Sundarakumar Kusuma. This paper presents the results of a study of the environmental impacts of the proposed Bauxite mining project at Jerrila, Visakhapatnam, A.P, India. The study considered physical, chemical, and ecological as well as social and economic issues in relation to the various operations in the Bauxite mining process.

Bauxite is the ideal raw material for the manufacturing of alumina. Aside from the primary constituents of aluminum and silicon, bauxite is frequently coupled with many valuable elements such as gallium (Ga), titanium (Ti), scandium (Sc), and lithium (Li). The bauxite residue and circulating spent liquor in alumina production typically include ...

This ecologically sensitive and fragile region in Kolhapur district has now been subjected to (PDF) Studies On The Impact Of Bauxite Mining Activities On Environment In …

"Bauxite Residue" (BR) refers to the insoluble solid material, generated during the extraction of alumina (Al 2 O 3) from Bauxite ore using the Bayer process.When bauxite ore is treated with caustic soda, the aluminum hydroxides/oxides contained within, are solubilized, with approximately 50% of the bauxite mass being transferred to the …

Bauxite occurs between 1000 m – 1100 m above MSL in Kolhapur and Satara districts and at 150 m – 200 m above MSL in Ratnagiri and Kolaba districts. …

Bauxite is a mineral found in laterite rock. Bauxite is mainly used for aluminum production. Maharashtra produces 21 percent of the total bauxite reserves found in India. Bauxite in Maharashtra is of high quality and there are about 68 million reserves in the state. Kolhapur, Ratnagiri, Raigad, Thane, Sangli and Satara

Lad R. J. and Samant J. S., Impact of Bauxite Mining on Soil: A Case Study of Bauxite Mines at Udgiri, Dist-Kolhapur, …

Accueil Extraction de bauxite à Kolhapur. The largest deposits occur in Kolhapur district capping the plateau basalts. Udgeri, Dhangarwadi, Radhanagari and Inderganj in Kolhapur district contain rich deposits with alumina content 52 to 89 per cent. The other districts with considerable deposits are Thane, Ratnagiri, Satara and Pune.

Alumina is the feedstock to produce aluminum and is mainly extracted from Bauxite ore.[] Bauxites are composed mostly of alumina hydrate minerals and, in a lesser amount, hydrated aluminum silicate, iron, and titanium minerals.[] The common industrial way to produce alumina is the well-known Bayer process,[] in which large amounts of a …

The present research paper deals with the assessment of possible environmental impacts due to the proposed bauxite mining in the area of Shahuwadi of Kolhapur district of …

At the first stage, bauxite ore was leached under atmospheric conditions with oxalic acid, iron was selectively extracted into the solution, and the refractory aluminum was enriched in the ...

Studies On The Impact Of Bauxite Mining Activities On Environment In Kolhapur District. The Western Ghats, one of the 34 global biodiversity hotspots, retain more than 30 % of …

Kolhapur – 416 004 and 2Polymer Science and Engineering Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune – 411 008, India (Received 30 June 2009, revised 26 April 2010)

3-85%; Al-45%); gibbsite or hydrargillite, Al2O3.3H2O (Al2O. 3-. 65.4%; Al-34.6%), and bauxite (containing colloidal alumina hydrogel), Al2O3.2H2O (Al2O. 3-73.9%; Al …

Bauxite mining is carried out by opencast manual method. The air borne particulate matter generated by ore and handling operations, transportation and screening of ore is the main air pollutant.

Bauxite (Fig. 1.33) is formed by surface weathering of clay rocks around the tropical region and composer of aluminum oxide (Al (OH) 3 ). It contains 15%–25% aluminum and only ore used for commercial extraction for aluminum. The bauxite occurs as near-surface layers and usually mixed with clay minerals, iron oxide, and titanium dioxide.

The present study aimed at the scandium extraction from bauxite residue by H2SO4 and H3PO4 leaching. The use of H2O2 was evaluated to avoid silica gel formation. ... The authors acknowledge the University of Sao Paulo for supporting this project and Fundação de Amparo à Pesquisa do Estado de São Paulo and Capes …

The blanket-type bauxite deposit of the Panhala area has been studied with reference to its geological setting, mineralogy and genesis. Field relations indicate the following …

The dependence of Mg extraction on Sc extraction was almost linear (y = 0.565x, with R 2 = 0.982). It means that the Sc extraction is associate d with the Mg extract ion at all pH

The long-term storage of bauxite residue (red mud) is harmful to the environment and the tailing ponds also cover large areas. At the moment there is no large-scale utilization of bauxite residue. However, some bauxite residues contain considerable concentrations of rare-earth elements (REEs) and the recovery of these REEs together …

Materials 2022, 15, 1343 2 of 16 The acidic methods are commonly proposed for extracting minor elements from RM [10,15–20]. These methods allow a high recovery of REEs by leaching with inorganic and

The study area i.e. two bauxite mines at village Udgiri, Dist-Kolhapur, forms a part of globally acknowledged biodiversity rich Western Ghats which are now under …

Organic carbon is an important parameter of any soil, which improves both the physical and chemical properties of soil and has several favourable effects on soil quality. The quality of soil improves if the organic carbon in the soil is greater than 0.8%13. The organic carbon values varied from 0.45 to almost 4.5 %.

Bauxite ore is the world's main source of aluminum. Bauxite is a rock formed from a reddish clay material called laterite soil and is most commonly found in tropical or subtropical regions. Bauxite is primarily comprised of aluminum oxide compounds (alumina), silica, iron oxides and titanium dioxide. Approximately 70 percent of the …

Except for the absence of a clay cover (i.e. Belterra Clay), which is very common and a typical geological aspect on the top of most bauxite deposits in Amazon (Costa et al., 2014; De Oliveira et al., 2016; Kotschoubey et al., 2005; Negrão et al., 2018a; Truckenbrodt et al., 1991), the lateritic sequence of the borehole FN3 39 can be well ...

PDF | On Dec 1, 2022, Ilaria Dibattista and others published Socio-environmental impact of mining activities in Guinea: The case of bauxite extraction in the region of Boké | Find, read and cite ...