Main Content
Developing energy-efficient, seismic-resistant, fireproof, high-strength, and lightweight building materials is a long-term strategic policy for China's national economic development. Asbestos-free calcium silicate board, with its widely available raw materials-including industrial waste-and low cost, meets all these performance requirements. Produced through mature technology, it is extensively used in various construction applications such as interior/exterior wall panels, acoustic panels, ceiling boards, and decorative boards. Its export volume continues to grow, earning widespread favor among international users.
Production lines for building calcium silicate board and cement fiber board utilize the advanced "cylinder process," which supports both asbestos-free and asbestos-containing production, allowing for raw material diversity. The forming equipment is highly advanced, poses no environmental impact, and ensures green, safe manufacturing-delivering truly eco-friendly panels. Asbestos-free calcium silicate board production lines hold significant social and economic value for the nation, society, and enterprises, with bright prospects for future development and sales.
Environmental Impact and Countermeasures
The raw materials required for calcium silicate board production are non-toxic and harmless to humans. However, during the production process, dust can be generated during pulping and edge grinding, which may pose health risks. Additionally, the forming process produces substantial industrial wastewater and a small amount of industrial residue with high pH levels, which could cause serious pollution if discharged. This design adopts the following measures to effectively resolve these issues:
11-1 Installation of Dust Collectors to Prevent Dust Dispersion and Enable Reuse
To prevent harm from various dust sources to human health and the environment, dust collectors are installed at emission points during pulping and board reprocessing. This ensures airborne dust levels meet standards. Collected dust can be directly reintroduced into the raw material mix in appropriate proportions for reuse in production.
11-2 Implementation of a "Closed-Loop Water Circulation System" to Prevent Alkaline Wastewater Discharge
The "closed-loop water circulation system" recycles wastewater generated during the forming process within the production cycle. Not a single drop of wastewater is discharged externally. Wastewater from storage tanks flows to various usage points, and after being discharged from the board-forming machine, it is pumped back into clarified and wastewater tanks for reuse. During tank cleaning, residues are directed via trenches to outdoor sedimentation ponds, then pumped back into the tanks, maintaining a complete closed loop without external discharge.
This process not only entirely prevents wastewater discharge and environmental pollution but also significantly conserves water-a critical advantage for water-scarce regions in China.
11-3 Complete Recycling of Waste Residue for Reuse in Production
The design incorporates "agitators" in both clarified and wastewater tanks. These devices stir up residue adhering to tank walls or settled at the bottom, suspending it uniformly in the wastewater for redistribution to usage points and reintroduction into production.
Periodically cleared sediment from outdoor sedimentation ponds is stored separately and added in controlled proportions directly into the pulper for reuse.
Full utilization of waste residue prevents environmental pollution and substantially reduces production costs-a dual benefit.
Partnering with an innovative calcium silicate board machine supplier ensures access to such sustainable technologies, while a trusted calcium silicate board machine supplier can provide complete solutions that maximize both economic and environmental returns.