Method for Recycling Silicon Waste

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The invention describes a method for recycling silicon waste, especially from solar modules. The process involves mixing silicon waste with red mud and subjecting the mixture to high temperatures (800°C to 1700°C) to produce a ferrosilicon alloy.

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• Recycling silicon waste from end-of-life solar panels.
• Recovering valuable materials from industrial silicon scrap.
• Producing ferrosilicon alloy for use in steelmaking and metallurgy.
• Reducing landfill waste associated with solar panel disposal.
• Processing industrial byproducts (red mud) in combination with silicon waste.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables sustainable and efficient recycling of silicon waste, lowering environmental impact.
• Provides an additional source of ferrosilicon alloy, reducing reliance on primary raw materials.
• Combines two waste streams (silicon waste and red mud) for value-added products.
• Reduces disposal costs and environmental burden of solar panel and industrial waste.
• Supports circular economy initiatives in the renewable energy and metallurgical sectors.

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Patent Abstract

Die Erfindung betrifft ein Verfahren zur stofflichen Wiederverwertung von Siliciumabfällen, insbesondere von Solarmodulen. Dabei ist vorgesehen, dass ein Gemisch, das Siliciumabfälle und Rotschlamm enthält, bei einer Temperatur von mindestens 800 °C und höchstens 1700 °C zu einer Ferrosilicium-Legierung umgesetzt wird.