Anthracite and its properties

Anthracite is a type of coal that is known for its high carbon content and low moisture, volatile matter, and ash content. It is a hard, shiny, and black material that has a high energy density. Anthracite is primarily used as a fuel in industrial processes and residential heating due to its high heat output and long burn time.

Properties of Anthracite

1. Water Requirement: Anthracite requires less water compared to other filtration media such as sand. This is because anthracite has a lower porosity and specific surface area, which reduces the amount of water needed for filtration processes.

2. Inertness to Caustic Solutions: Contrary to option B, anthracite is more inert to caustic solutions than sand. It exhibits excellent chemical resistance and is not easily affected by caustic solutions. This makes anthracite a suitable choice for use in industrial filters where caustic chemicals are present.

3. Cost: Anthracite is generally more costly per tonne compared to sand. This is primarily due to its higher carbon content and energy density, making it a more valuable and sought-after fuel source. The higher cost of anthracite can also be attributed to its limited availability and the higher cost of mining and processing.

4. Industrial Applications: Anthracite is widely used in industrial filters due to its superior filtration properties. It is commonly used as a filtration media in water treatment plants, wastewater treatment facilities, and various industrial processes. Anthracite's high carbon content and low ash content make it an ideal choice for removing suspended solids, turbidity, and other impurities from water and industrial liquids.

Conclusion

In summary, the statement that anthracite is less inert to caustic solutions than sand is incorrect. Anthracite is actually more inert to caustic solutions, making it a suitable choice for industrial filters where caustic chemicals are present. The other statements regarding anthracite, such as its lower water requirement, higher cost, and use in industrial filters, are correct.