Silicon metal powder and silicon metal lumps are both used in different applications.

Silicon metal powder is often used as a raw material in the production of silicon wafers for the semiconductor industry. It is also used as an additive in the production of various alloys, such as aluminum-silicon alloys and magnesium alloys, to improve their properties, including their strength, durability, and corrosion resistance.

Silicon metal lumps, also known as silicon ingots or blocks, are primarily used as an alloying agent in the production of various metals, such as aluminum and steel, to improve their mechanical properties. For example, silicon metal lumps can be added to aluminum alloys to increase their strength, or to steel to improve its hardness and resistance to corrosion.

In addition to their use as alloying agents, silicon metal lumps are also used in the production of silicone polymers, which are widely used in applications such as sealants, adhesives, and lubricants.

Overall, both silicon metal powder and silicon metal lumps are important materials with a range of applications in various industries. The specific form of silicon metal used will depend on the application and the desired properties of the final product.