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Environment
- Crucial for renewable energy technologies such as solar panels, wind turbines, and semiconductors.
- Also, crucial for Battery Energy Storage Systems (BESS).
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National Security
- Essential for India''s defense sector, including missile systems, aerospace, and communication technologies.
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Economic & Electronic
- Shift to electric vehicles (EVs) requires lithium-ion batteries.
- Essential for semiconductor chips in smartphones, computers, and communication devices.
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Six Critical Elements Opened for Private Mining
Lithium
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- Lithium is a non-ferrous, soft, silvery-white alkali metal.
- It is also called ‘white gold’ due to its high demand for rechargeable batteries.
Properties
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- Under standard conditions, it is the least dense metaland the least dense solid element.
- Like all alkali metals, it is highly reactiveand flammable, so it must be stored in vacuum, inert atmosphere, or inert liquid (such as purified kerosene or mineral oil).
- It exhibits a metallic lustre. But it corrodes quickly in the airto a dull silvery grey, then black tarnish.
Occurrence
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- It never occurs freely in naturebut occurs mainly as pegmatitic minerals.
- Due to its solubility as an ion, it is present in ocean waterand commonly obtained from brines (high-concentration salt solution in water).
- Lithium metal is isolated electrolyticallyfrom a mixture of lithium chloride and potassium chloride.
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Pegmatite is a coarse-textured igneous rock that forms during the final stage of magma’s crystallisation. It contains large crystals and minerals rarely found in other types of rocks.
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Global Reserves and Production
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- Countries with largest reserves:1st Bolivia > 2nd Argentina > 3rd Chile > 4th US > Australia > China.
- 54% of the world’s lithium reservesare in three South American countries: Argentina, Bolivia, and Chile. The area is referred to as the ‘Lithium Triangle’.
- Top Producers:1st Australia > 2nd Chile > 3rd China > 4th Aregentina > 5th Zimbabwe
Uses
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- Lithium-ion batteriesare used in laptops, mobiles, electric vehicles, wind turbines, solar panels, etc.
- It is used to make alloys with aluminium and magnesium, which are stronger but lighter.
- It is used in nuclear reactions, the ceramics and glass industry, and lubricating greases.
- It is also used for carbon dioxide removaland air purification (esp. in confined areas, such as spacecraft and submarines).
Titanium
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- Titanium is a metal that has a silver-grey appearance.
- Properties:high strength, lightweight, and is corrosion-resistant, heat resistant (due to high melting point), and biocompatible (compatible with living tissues and has low reactivity with the human body).
- Occurrence:found in nature only as an oxide, not in its pure metallic form.
- It is found in various minerals,rocks, and soils. It is also present in plants, animals, natural waters, deep-sea dredgings, meteorites, and stars.
- Ores:The most abundant titanium ore is ilmenite. Other titanium ores include rutile and titanite.
- Ilmenite:It is an iron-black, heavy, metallic oxide mineral. It is composed of iron and titanium oxide. It is commonly found in igneous rocks.
- Rutile:It has a distinctive reddish-brown colour and a higher titanium dioxide content than ilmenite. It occurs in igneous and metamorphic rocks and is often found in association with ilmenite.
- Titanite:It is a calcium titanium silicate mineral. It is green, yellowish-green, brown, or black in colour. It is commonly found in metamorphic and igneous rocks.
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An oxide is a chemical compound that contains at least one oxygen atom bonded to one or more other elements. Oxides are formed when an element reacts with oxygen.
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- Top Producers of Titanium:1st China > 2nd Russia > 3rd Japan > 4th Kazakhstan > 5th Ukraine
- Uses:nuclear applications, defence, aerospace, marine, and construction industries, high-performance alloys, electrical goods, medical implants, and jewellery.
Zirconium
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- Zirconium is a greyish-white metal.
- Properties:soft, malleable, lustrous, ductile, and corrosion-resistant.
- Occurrence:zircon mineral (zirconium silicate) commonly found in beach sands.
- Baddeleyite(pure zirconium dioxide) is the only other important zirconium mineral.
- Top Producers:1st Australia > 2nd South Africa > 3rd China > 4th Ukraine > 5th Mozambique
- Uses:nuclear applications, aerospace and defence industries, production of superalloys, capacitors, medical implants, ceramics, and zircon Gemstones.
Beryllium
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- Beryllium is a steel-grey metalwith chemical properties resembling those of aluminium.
- Properties:light, high melting point, excellent thermal conductivity, low density and brittle.
- Occurrence:It does not occur freely in nature. It is primarily extracted from beryl and bertrandite minerals. Beryl forms gemstones, such as emeralds and aquamarine.
- Top Producers of Beryllium:1st United States > 2nd China > 3rd Mozambique > 4th Brazil > 5th
- Uses:nuclear applications, aerospace and defence industries, production of alloys and semiconductors (due to its ability to improve the electrical performance of semiconductors).
- Beryllium is transparent to X-rays, making it an ideal material for X-ray windows.
Niobium
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- Niobium is a grey metal that looks like steelor, when polished, like platinum.
- Properties:It is soft, ductile, corrosion-resistant, and superconductive (at low temperatures).
- Occurrence:It is primarily obtained from the minerals columbite-tantalite (coltan) and pyrochlore.
- Top Producers of Niobium:1st Brazil > 2nd Canada > 3rd Rwanda > 4th Nigeria > 5th
- Uses:nuclear applications, alloys, electronic components, orthopaedic and dental implants, etc.
Tantalum
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- Tantalum is bright, silver-grey metal.
- Properties:It is very hard and has high density, high melting point, and corrosion resistance.
- Occurrence:It is obtained from the mineral columbite-tantalite (coltan).
- Columbite-tantalite is a black-to-brownish-black mineral that contains both niobiumand tantalum.
- Top Producers:1st Democratic Republic of Congo > 2nd Brazil > 3rd Rwanda > 4th Nigeria > 5th
- Uses:nuclear applications, aerospace and defence industries, production of capacitors, medical implants, super alloys, etc.
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