Domestically, the silicon slurry byproduct generated from silicon wafer slicing is conservatively estimated to reach over 24,000 metric tons annually, of which solid matter accounts for about 50%, consisting purely of silicon and silicon compounds. From the perspective of steel smelting, silicon and silicon compounds are excellent steelmaking additives that can be used for reduction and temperature elevation. Currently, most steel mills in Taiwan use ferrosilicon as a reduction additive. However, ferrosilicon can only rely on imports and is not cheap; if the silicon slurry from the solar industry can be supplied to the steel industry for use, it would meet an excellent complementary demand for both industries.

Chenya Resources saw this demand! In 2014, it assembled a technical team to invest in the research and development of processing and manufacturing technologies, and also cooperated with National Cheng Kung University to introduce professional inspection technologies, starting to challenge this task from multiple dimensions. In September 2015, the first production line was completed, processing the solid dry residue of silicon slurry into silicon briquettes that can be used by steel mills, successfully replacing ferrosilicon to become a new choice of smelting additive for steelmaking plants. Currently, the annual production capacity of silicon briquettes is 3,000 tons, and multiple steel mill customers have been using them stably. Chenya Resources has facilitated the mutual benefit and symbiosis between the technology industry and traditional industries, allowing resources to be sustainably recycled and utilized.

The Chenya silicon briquette product series belongs to innovative products, which can replace the commonly used imported ferrosilicon in the market and are applied as additives in the electric arc furnace and converter steelmaking processes. They not only exert the functions of chemical temperature elevation and reduction, reducing electricity consumption and improving alloy recovery rates, but are also cheaper than ferrosilicon in terms of price, with an overall cost-performance ratio significantly superior to imported ferrosilicon. Since silicon briquettes are fully localized products, the raw materials are obtained from domestic silicon wafer slicing-related industries, such as the solar industry and the semiconductor industry, achieving localized manufacturing, localized transportation, and localized utilization. Chenya Resources has solved the problem of recycling silicon-containing waste liquid into resources and provided domestic steel mills with resource materials sufficient to save production costs, creating industrial symbiosis and writing another new chapter for the domestic circular economy.

Economic development must allow environmental protection and industry to coexist and prosper together, and the "circular economy" is the most important driving force for the future. Through holistic planning and design, Chenya Resources properly collects, regenerates, and recycles the energy, resources, waste, and wastewater discharged during industrial production processes, balancing industrial development and environmental protection to create a win-win situation!
(The content above was translated by AI.)