Silicon lump is primarily used in the production of silicon-based alloys, especially in the metallurgical industry. It serves as a key raw material for manufacturing ferrosilicon, which is essential in steelmaking to improve strength, hardness, and corrosion resistance. It is also used in the production of aluminum-silicon alloys for the automotive and aerospace industries, where lightweight and durable materials are required.

In the chemical industry, silicon lump acts as a precursor for producing organosilicon compounds and silicones used in sealants, lubricants, and waterproofing agents. Additionally, it plays a role in the manufacturing of solar-grade silicon after further purification, contributing to photovoltaic cell production for solar energy systems. Its high thermal stability and semiconductor properties make it valuable in electronics and renewable energy applications.