Nickel-based superalloys. The main alloying elements are chromium, tungsten, molybdenum, cobalt, aluminum, titanium, boron, zirconium and so on. Among them, chromium plays an important role in anti-oxidation and anti-corrosion, and other elements play a reinforcing role.
1. Heat treatment industry. Such as furnace roller, bell furnace and annealing furnace. 2. Calciner. If it is used to calcine to produce high-performance corundum, chromite is calcined to produce ferrochrome alloy, and nickel used as a catalyst in petrochemical industry is recovered.