|
National Mineral Development Corporation
NMDC Limited, formerly National Mineral Development Corporation, is a central public sector undertaking. It is under the ownership of Ministry of Steel, Government of India. It is involved in the exploration of iron ore, copper, rock phosphate, limestone, dolomite, gypsum, bentonite, magnesite, diamond, tin, tungsten, graphite, coal etc. It is India's largest iron ore producer and exporter, producing more than 35 million tonnes of iron ore from three mechanized mines in Chhattisgarh and Karnataka. It also operates the only mechanized diamond mine in the country at Panna in Madhya Pradesh. NMDC is in the process of demerging its Nagarnar iron and steel plant by mid 2022, and publicly listing the demerged company. Operating mines * Bailadila Iron Ore Mine, Kirandul Complex, South Bastar district, Dantewada (C.G.)Steel * Bailadila Iron Ore Mine, Bacheli Complex, South Bastar district, Dantewada (C.G.) * Donimalai Iron Ore Mine, Donimalai, Bellary district, Karnataka (at Decemb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bentonite
Bentonite () is an absorbent swelling clay consisting mostly of montmorillonite (a type of smectite) which can either be Na-montmorillonite or Ca-montmorillonite. Na-montmorillonite has a considerably greater swelling capacity than Ca-montmorillonite. Bentonite usually forms from the weathering of volcanic ash in seawater, or by hydrothermal circulation through the porosity of volcanic ash beds, which converts (devitrification) the volcanic glass ( obsidian, rhyolite, dacite) present in the ash into clay minerals. In the mineral alteration process, a large fraction (up to 40-50 wt.%) of amorphous silica is dissolved and leached away, leaving the bentonite deposit in place. Bentonite beds are white or pale blue or green (traces of reduced ) in fresh exposures, turning to a cream color and then yellow, red, or brown (traces of oxidized ) as the exposure is weathered further. As a swelling clay, bentonite has the ability to absorb large quantities of water, which increa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Rare Earths Limited
IREL (India) Limited (Formally Indian Rare Earths Limited) is a government-owned corporation Mini-Ratna Category A, Schedule B Company, in India based in Mumbai, Maharashtra. It was incorporated as a public limited company in 1950, jointly owned by the Government of India and Government of Travancore, Kochi with the primary intention of taking up commercial scale processing of Monazite. Government of India took control of IREL in 1963 under the administrative control of Department of Atomic Energy (DAE). It was incorporated with the primary intention of taking up commercial scale processing of monazite sand at its first unit namely Rare Earths Division (RED), Aluva, Kochi for the recovery of thorium. IREL commissioned its largest division called Orissa Sand Complex (OSCOM) at Chhatrapur, Odisha. Today IREL operates these four units along with a corporate office in Mumbai and a unit located in Manavalakurichi of Kanyakumari district. It produces/sells six heavy minerals namely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beneficiation
In the mining industry or extractive metallurgy, beneficiation is any process that improves (benefits) the economic value of the ore by removing the gangue minerals, which results in a higher grade product (ore concentrate) and a waste stream (tailings). There are many different types of beneficiation, with each step furthering the concentration of the original ore. History Iron beneficiation has been evident since as early as 800 BC in China with the use of bloomery. A bloomery is the original form of smelting and allowed people to make fires hot enough to melt oxides into a liquid that separates from the iron. Although the bloomery was promptly phased out by the invention of the blast furnace, it was still heavily relied on in Africa and Europe until the early part of the second millennium. The blast furnace was the next step in smelting iron which produced pig iron. The first blast furnaces in Europe appeared in the early 1200s around Sweden and Belgium, and not until the late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesite
Magnesite is a mineral with the chemical formula (magnesium carbonate). Iron, manganese, cobalt, and nickel may occur as admixtures, but only in small amounts. Occurrence Magnesite occurs as veins in and an alteration product of ultramafic rocks, serpentinite and other magnesium rich rock types in both contact and regional metamorphic terrains. These magnesites are often cryptocrystalline and contain silica in the form of opal or chert. Magnesite is also present within the regolith above ultramafic rocks as a secondary carbonate within soil and subsoil, where it is deposited as a consequence of dissolution of magnesium-bearing minerals by carbon dioxide in groundwaters. Isotopic structure: clumped isotope The recent advancement in the field of stable isotope geochemistry is the study of isotopic structure of minerals and molecules. This requires study of molecules with high resolutions looking at bonding scenario (how heavy isotopes are bonded to each other)- leading to kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bellary District, Karnataka
Bellary, officially known as Ballari (pronounced ), is a major district in Karnataka. It is located at north-eastern part of Karnataka. This district belongs to Kalyana-Karnataka. This district was one of the biggest districts in Karnataka until the Vijayanagara district was carved out of Ballari district in 2021 officially. This district has the highest deposits of iron ore in India. Historical sites, farm land and rich minerals characterize Ballari district. Recently making headlines with mining industry, Ballari, the district's capital, is known as Steel City and Gani Nadu (City of Mining). History Earlier Ballari district was part of Madras presidency. The area was severely affected by the Great Famine of 1876–78. After Indian independence, when the Indian states were reorganized along linguistic lines, Ballari became part of the Kalyana-Karnataka region of the state of Karnataka, now renamed as Kalyana-Karnataka. In 1882, Anantapur District was formed by carving o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madhya Pradesh
Madhya Pradesh (, ; meaning 'central province') is a state in central India. Its capital is Bhopal, and the largest city is Indore, with Jabalpur, Ujjain, Gwalior, Sagar, and Rewa being the other major cities. Madhya Pradesh is the second largest Indian state by area and the fifth largest state by population with over 72 million residents. It borders the states of Uttar Pradesh to the northeast, Chhattisgarh to the east, Maharashtra to the south, Gujarat to the west, and Rajasthan to the northwest. The area covered by the present-day Madhya Pradesh includes the area of the ancient Avanti Mahajanapada, whose capital Ujjain (also known as Avantika) arose as a major city during the second wave of Indian urbanisation in the sixth century BCE. Subsequently, the region was ruled by the major dynasties of India. The Maratha Empire dominated the majority of the 18th century. After the Anglo-Maratha Wars in the 19th century, the region was divided into several princel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panna, India
Panna is a city and a municipality in Panna district in the Indian state of Madhya Pradesh. It is famous for its diamond mines and beautiful And divine Temples. It is the administrative center of Panna District. History Panna was a Bundela Rajput State . It was a Gond settlement until the 13th or 17th century (cite reference), when the Gondi were defeated by the Chandelas they migrated to other parts of Madhya Pradesh. Until that date, there were many rulers of the area. The famous mandir of Padmavatipuri Dham, adorned with divine lustre, is located in Panna town at the centre of Vindhyachal in Madhya Pradesh. The itinerant sage Mahamati Prannath and his disciples reached Panna with a divine message of awakening one's soul. Seeing a desert island, he decided to unfurl the flag of Jagani there. He helped the king Chhatrasal and adorned him with the title of Maharaja. He remained there for eleven years, and took samadhi inside the dome. The place, therefore, is known as the sea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karnataka
Karnataka (; ISO: , , also known as Karunāḍu) is a state in the southwestern region of India. It was formed on 1 November 1956, with the passage of the States Reorganisation Act. Originally known as Mysore State , it was renamed ''Karnataka'' in 1973. The state corresponds to the Carnatic region. Its capital and largest city is Bengaluru. Karnataka is bordered by the Lakshadweep Sea to the west, Goa to the northwest, Maharashtra to the north, Telangana to the northeast, Andhra Pradesh to the east, Tamil Nadu to the southeast, and Kerala to the southwest. It is the only southern state to have land borders with all of the other four southern Indian sister states. The state covers an area of , or 5.83 percent of the total geographical area of India. It is the sixth-largest Indian state by area. With 61,130,704 inhabitants at the 2011 census, Karnataka is the eighth-largest state by population, comprising 31 districts. Kannada, one of the classical languages of India, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chhattisgarh
Chhattisgarh (, ) is a landlocked state in Central India. It is the ninth largest state by area, and with a population of roughly 30 million, the seventeenth most populous. It borders seven states – Uttar Pradesh to the north, Madhya Pradesh to the northwest, Maharashtra to the southwest, Jharkhand to the northeast, Odisha to the east, Telangana and Andhra Pradesh to the south. Formerly a part of Madhya Pradesh, it was granted statehood on 1 November 2000 with Raipur as the designated state capital. Chhattisgarh is one of the fastest-developing states in India. Its Gross State Domestic Product (GSDP) is , with a per capita GSDP of . A resource-rich state, it has the third largest coal reserves in the country and provides electricity, coal, and steel to the rest of the nation. It also has the third largest forest cover in the country after Madhya Pradesh and Arunachal Pradesh with over 40% of the state covered by forests. Etymology There are several theories as to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands called coal forests that covered much of the Earth's tropical land areas during the late Carboniferous ( Pennsylvanian) and Permian times. Many significant coal deposits are younger than this and originate from the Mesozoic and Cenozoic eras. Coal is used primarily as a fuel. While coal has been known and used for thousands of years, its usage was limited until the Industrial Revolution. With the invention of the steam engine, coal consumption increased. In 2020, coal supplied about a quarter of the world's primary energy and over a third of its electricity. Some iron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphite
Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on large scale (300 kton/year, in 1989) for uses in pencils, lubricants, and electrodes. Under high pressures and temperatures it converts to diamond. It is a weak conductor of heat and electricity. Types and varieties Natural graphite The principal types of natural graphite, each occurring in different types of ore deposits, are * Crystalline small flakes of graphite (or flake graphite) occurs as isolated, flat, plate-like particles with hexagonal edges if unbroken. When broken the edges can be irregular or angular; * Amorphous graphite: very fine flake graphite is sometimes called amorphous; * Lump graphite (or vein graphite) occurs in fissure veins or fractures and appears as massive platy intergrowths of fibrous or acicular crystalline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_male.jpg "Click for more on -> Madhya Pradesh")
.png "Click for more on -> Chhattisgarh")
