On August 21, the 2025 Mid-Year Academic Annual Conference of the Glass Fiber Branch of China Silicon Industry Association and the 45th Annual Conference of the Glass Fiber Information Network were held in Changzhou. Tianqi Lithium introduced Research on Aluminosilicate Powder for Green Substitution of Glass Fiber Raw Materials. This research demonstrated Tianqi Lithium's innovative efforts in sustainable development through the technical advantages and low-carbon value of Aluminosilicate Power products.
▲2025 Mid-Year Academic Annual Conference of the Glass Fiber Branch of China Silicon Industry Association
& the 45th Annual Conference of the Glass Fiber Information Network
Tianqi's Aluminosilicate Power is made from the slag extracted from the highest grade spodumene mine in Greenbushes, Western Australia. After desulfurization, iron reduction and purification processes, it is transformed into a new low-carbon mineral material, which is composed of silicon dioxide and aluminum trioxide. This product features high purity and stable performance. In collaboration with China Nanjing Fiberglass Research and Design Institute Co., Ltd., Tianqi has proven the feasibility of using Aluminosilicate Power to replace 50% of the natural mineral pyrophyllite in traditional ECR glass fiber formulations. Within a certain range, higher lithium content helps improve glass modulus and reduce melting energy consumption, delivering significant energy-saving and low-carbon benefits. Within a certain range, the increased lithium improves energy-saving and low-carbon performance aspects by improving glass modulus and reducing melting energy consumption.
▲Representatives from Tianqi Lithium's ESG and Sustainable Development Department
Reading the Research on Silica-Alumina Micropowder for Green Substitution of Glass Fiber Raw Materials
During the conference, Tianqi Lithium officially released a third-party verification report on the carbon footprint of its Aluminosilicate Power products. This report is based on a carbon footprint assessment for the Aluminosilicate Power produced at Tianqi’s Yanting base in 2024. In accordance with international standards, the carbon footprint of lithium residue was credited as zero, leading to a reduction in downstream full-life-cycle carbon emissions. As the overall carbon footprint of using Aluminosilicate Power is 52% lower than that of pyrophyllite, the product offers significant green benefits.
In line with the concept of a circular economy and promoting the green substitution of raw materials, Tianqi Lithium is leveraging its technological advantages to introduce Tianqi Aluminosilicate Power to the market. As the production capacity of Aluminosilicate Power continues to expand, the company will further strengthen the stable supply of this product and continuously advance the establishment of a production cycle characterized by reduction of generation and hazardousness of solid waste, full utilization of solid waste, and hazardous waste disposal of solid waste.
by: Tianqi Lithium ESG and Sustainable Development Department, Resource Utilization Integrated Team
