Tungsten Latest News
Recently, the Hindustan Zinc Ltd (HZL) has received the licence to explore and mine a tungsten block in Andhra Pradesh.Â
About Tungsten
- It is a chemical element with the symbol W, and atomic number 74.
- It is a naturally occurring element and classified as a transition metal.
- Major producers: China (major global producer), Vietnam, Russia, and North Korea.
- It has been classified as a Critical Mineral by the Government of India.
Occurrence of Tungsten
- It occurs in rocks and minerals combined with other chemicals, but never as a pure metal.
- It is found in nature in mineral forms like wolframite and scheelite.
Properties of Tungsten
- It has the highest melting point of all metals at 3410 °C.
- It has the lowest vapor pressure of all metals with 4.27 Pa at 3410 °C.
- It has the highest tensile strength of all metals over 1650 °C.
- Tungsten is a solid at room temperature.
- Tungsten alloys tend to be strong and flexible, resist wear, and conduct electricity well.
Uses of Tungsten
- Tungsten is used in products such as x-ray tubes, light bulbs, high-speed tools, and welding electrodes.
- It is also used as a catalyst to speed up chemical reactions.
- Tungsten carbide is immensely hard and is very important to the metal-working, mining and petroleum industries.
- Other tungsten compounds are used in ceramic pigments, as fire retardant coatings for fabrics, and as color-resistant dyes for fabrics.
Source: TH
Tungsten FAQs
Q1: Which mineral is a major source of Tungsten?
Ans: Wolframite and Scheelite
Q2: What is the melting point of Tungsten?
Ans: 3410°C