Goyu Building Materials integrates cross-industry by-products into its production process and reuses excess materials and steam waste heat to develop low-carbon, circular ALC (Autoclaved Lightweight Concrete) building materials.
To support the construction industry in transitioning towards low-carbon practices, Goyu incorporates the principles of circular economy into the production of ALC bricks, aiming to create lightweight, high-quality, low embodied carbon, circular building materials.
Utilizing Cross-Industry and Process Recycled Materials
Goyu collaborates with the Industrial Technology Research Institute to refine formulation development and improve process technologies. This enables the integration of recycled materials such as coal combustion fly ash from the power industry, waste glass sand from the glass industry, and desulfurization gypsum from the construction industry into its manufacturing processes. These recycled materials replace natural silica sand, Portland cement, and quicklime minerals.
During the cutting process of ALC body, the production of cutting edges and corners is mixed and dissolved, then reintroduced into the process, benefiting from stable slurry gasification and reducing the use of natural raw materials. Additionally, defective products produced during the packaging process are crushed and ground, then reintroduced into the process to replace natural silica sand. Goyu possesses patented technology for recycling ALC bricks/panels into product materials. Once regulations permit, the company aims to recycle external ALC cutting residues for internal recycling within their facilities.
Recycling of Steam in the Production Process
During the production of ALC, significant amounts of steam are required for curing. After curing, the released steam is directed into a waste heat recovery system. This system recycles the heat by warming the temperature of curing chambers, reheating slurry, and boiler water in the process. This practice not only enhances energy efficiency but also reduces energy consumption and carbon emissions during production.
Benefits
- Reduces the use of natural resources, lowers raw material costs, and minimizes environmental pollution from transportation.
- Achieved Taiwan's first Green Building Materials certification for ALC.