High Resistivity Metal Silicon

The production of metallurgical silicon begins with quartz sand (SiO₂) and carbon-based materials like coal or wood chips. These are heated to temperatures exceeding 1,800°C in an electric arc furnace, where a chemical reaction reduces silica to silicon, releasing carbon monoxide as a byproduct. This energy-intensive process requires approximately 12,000–15,000 kWh of electricity per ton of silicon, contributing to its environmental footprint . The resulting silicon, containing 98–99% purity, is then crushed and sorted into different grades based on impurity levels (e.g., iron, aluminum, calcium), which determine its applications.

To improve sustainability, manufacturers are exploring innovations like using renewable energy sources (e.g., hydropower in China's Yunnan province) and adopting advanced filtration systems to reduce emissions. For instance, in Norway, Elkem's carbon-capture project aims to recycle CO₂ emissions from silicon production, turning it into a reusable resource . Additionally, advancements in furnace design and automation are enhancing energy efficiency, reducing both costs and environmental impact. Despite these efforts, metallurgical silicon production remains a significant industrial challenge, balancing economic viability with ecological responsibility.

Packaging Details: packed in water-proof plastic woven bag, 1000kg per bag or as your requirements.
Delivery Time: Within 15 days after receipt 30% T/T in advance.
Remark: Chemical composition and size can be optimized by the customers' requirements

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