- Time:Aug 02, 2023
Non-ferrous metal smelting refers to the process of refining and processing non-ferrous metals (such as copper, aluminum, nickel, zinc, etc.). In these smelting processes, special refractory materials are required to withstand high temperatures and corrosive gases. The following are some common refractory materials used in non-ferrous metal smelting:
1. Magnesia refractory bricks: Magnesia bricks made of magnesia raw materials have excellent fire resistance and alkali resistance, and are suitable for high-temperature equipment such as magnesia ore smelting, magnesium alloy production and electrolytic cells. Magnesia refractory bricks include magnesia chrome bricks, magnesia spinel bricks, magnesia bricks, etc.
2. Silicate brick: Silicate brick is a refractory brick made of silicate as the main component. It has excellent fire resistance and corrosion resistance. It is often used in copper furnaces, aluminum electrolytic cells and glass kilns.
3. High-alumina bricks: High-alumina bricks with high alumina content have good fire resistance and corrosion resistance, and are suitable for use in aluminum smelting and other high-temperature non-ferrous metal smelting processes.
4. Silicon carbide material: Silicon carbide material has excellent fire resistance and corrosion resistance, as well as high thermal conductivity, and is suitable for high-temperature equipment such as copper alloy smelting, electrolytic cells and aluminum furnaces.
5. Carbon bricks: Carbon bricks are refractory bricks made of graphite and coke as the main components. They have good electrical conductivity and heat resistance, and are often used in equipment such as copper electrolytic cells and aluminum electrolytic cells.
6. Refractory castable: Refractory castable is a kind of flowable refractory material, which is composed of powder, granules and binder. They can be poured and cured as required and are suitable for non-ferrous metal smelting equipment of all shapes and sizes.
These refractory materials have different composition, structure and performance characteristics, and suitable materials can be selected according to different non-ferrous metal smelting processes and equipment requirements. For complex smelting systems, it is often necessary to combine various types of refractory materials to meet the requirements of different parts to ensure the efficiency and stability of the smelting process.
