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Platinum is a chemical element; it has symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata "silver". Platinum is a member of the platinum group of elements and group 10 of the periodic table of ...
4 giorni fa · Platinum is a very heavy, precious, silver-white metal that is soft, ductile, and resistant to corrosion and chemical attack. It is one of the most unreactive and abundant of the platinum metals and has many applications in jewelry, catalysis, and standard measurement.
- The Editors of Encyclopaedia Britannica
- Underground Mining
- Open-Pit Mining
- Alluvial Mining
- Heap Leaching
- In-Situ Recovery
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There are a few types of undergrounding mining methods. In shaft mining, vertical shafts are excavated to access deep ore bodies. Miners use elevators and hoists to transport workers and materials to the underground mine. In decline or adit mining, horizontal tunnels, known as declines or adits, are driven into the ore body from the side of a hill ...
For this type of mining, large, deep pits are excavated to access ore bodies near the surface. This method is used for shallow deposits and can result in significant environmental disturbances due to the excavation of large areas. Open-pit mining, while effective for shallow platinum deposits, can result in significant environmental disturbances du...
Alluvial miningis the extraction of valuable minerals from sedimentary deposits, typically found in riverbeds, floodplains or areas where water has transported eroded materials. It begins with natural erosion, where geological forces dislodge minerals from their sources. Water carries these materials, depositing them when its velocity decreases. Mi...
This process is used to extract valuable metals, often from low-grade ores. In this method, the ore is crushed and stacked into heaps or piles. Then, a leaching solution, typically containing chemicals like cyanide, is applied to the ore heap. Over time, the solution percolates through the heap, dissolving the target metals. The dissolved metals ar...
In-situ recovery (ISR), also known as in-situ leachingor solution mining, is a mining method used for extracting valuable minerals from ore bodies without physically removing the ore. Instead, a leaching solution is injected directly into the ore deposit underground. This solution dissolves the target minerals, and the resulting pregnant solution i...
Platinum is a precious metal with exceptional properties, such as high density, resistance to corrosion and melting point. Learn about its history, mining, uses and comparison with gold.
Platinum is a very different substance to a chemist. Platinum metal is silvery white and does not oxidise, properties that make it highly appealing for jewellery. It is more precious than silver but with prices more volatile than gold.
15 ott 2023 · Platinum is a chemical element with the symbol Pt and atomic number 78 on the periodic table. It is a dense, malleable, and highly corrosion-resistant metal, making it valuable for various purposes, including jewelry, catalytic converters, and industrial applications.
17 mag 2022 · Platinum is a rare, dense, and expensive silvery-white metal that belongs to the platinum group of transition metals. It has many applications in catalytic converters, jewelry, dentistry, and scientific equipment, and is mined mainly in South Africa, Russia, and Canada.
21 ago 2020 · Platinum is a dense, stable and rare metal that is used in jewelry, medicine, electronics and more. Learn about its characteristics, discovery, extraction and applications in this comprehensive overview.
