What types of wear-resistant linings are used in the mining industry?
Wear-resistant materials find widespread application in various industrial sectors such as mining, metallurgy, thermal power generation, and construction cement. Particularly in the production and processing of raw materials from ores, various wear-resistant materials are indispensable to reduce and prevent wear and tear of machinery and components.
The global mining industry consumes over 10 million tons of wear-resistant materials annually. The use of these materials reduces equipment wear and tear, resulting in cost savings exceeding Hundreds of billions of dollars per annum, according to statistics. There are numerous commonly used wear-resistant materials, and the choice of material depends on the specific application. Some of the frequently used wear-resistant materials include high manganese steel, alloy steel, white cast iron, and wear-resistant rubber.
- High Manganese Steel Wear-resistant Material: High manganese steel has been in use for over a century. It is an excellent choice when equipment is subjected to intense impact due to its impact hardening properties. However, in other operating conditions, such as the use of ball mill linings or clinker crusher hammers, high manganese steel is not the best choice. In such cases, its impact hardening is minimal, leading to a short lifespan. Efforts to improve high manganese steel are ongoing, including adjusting its chemical composition, incorporating solid solution strengthening elements, and modifying its heat treatment processes.
- Alloy Steel Wear-resistant Material: Alloy steel wear-resistant materials also have extensive applications. They are suitable for conditions involving certain impact loads and exhibit excellent strength, hardness, toughness, and wear resistance. However, low-carbon alloy steel can be relatively expensive, and high carbon content can negatively affect wear resistance, potentially causing cracking during quenching. The wear resistance of alloy steel materials can be controlled by managing carbon content, adding different alloying elements, and improving heat treatment processes.
- Wear-resistant White Cast Iron: Wear-resistant white cast iron materials began to gain popularity in the mid-20th century and are widely accepted for their excellent performance. They offer better wear resistance than alloy steel, improved toughness and strength compared to regular white cast iron, and they also exhibit good high-temperature and corrosion resistance. There are three main categories of wear-resistant white cast iron: regular wear-resistant white cast iron, nickel-hardened white cast iron, and high-chromium white cast iron. In the early 20th century, nickel-hardened cast iron gained widespread usage. However, due to the high cost of nickel, newer wear-resistant materials like high-chromium white cast iron have been developed to replace it.
- Wear-resistant Rubber Linings: Wear-resistant Rubber Linings represent a newer class of wear-resistant materials used in mining machinery. They possess excellent elasticity, flexibility, wear resistance, and corrosion resistance. Compared to high manganese steel, alloy steel, and white cast iron wear-resistant materials, Rubber Linings have stronger toughness, lighter weight, and are easier to install and maintain. As a result, they are widely used in mining, coal washing plants, gravel plants, and other mechanical equipment, serving as Rubber Linings for equipment, impellers, lining plates, screens, overflow components, and more.
DEF Rubber’s high-quality wear-resistant Rubber Linings have gained increasing recognition in the mining industry. With outstanding performance and competitive pricing, they have become the preferred choice for many customers.