High-Pressure Automatic Filter Press with Full PLC Automation for Dry Stack

The XAYZG series automatic recessed chamber filter press is purpose-engineered for high-capacity tailings dewatering in the mining industry, enabling compliant dry stack tailings disposal that meets increasingly stringent environmental regulations in Mexico and throughout Latin America. Following major tailings dam incidents, regulatory authorities across Mexico, Brazil, and Chile have mandated transition from conventional tailings ponds to filtered tailings disposal methods. This filter press delivers mechanically stable filter cakes with moisture content consistently below 15 percent, meeting the geotechnical requirements for dry stacking while enabling process water recovery rates exceeding 85 percent for recirculation in the concentrator. The robust carbon steel frame with automated plate shifting and PLC-controlled filtration cycles provides reliable 24-hour continuous operation with minimal operator intervention.

• Dry Stack Tailings Compliance: The filter press produces firm, stackable filter cakes with residual moisture between 12 and 18 percent that meet the shear strength requirements for engineered dry stack tailings facilities, eliminating the long-term liability and environmental risk associated with conventional slurry tailings ponds.
• Maximum Water Recovery: The high-pressure filtration cycle at up to 1.6 megapascals combined with optional membrane squeeze plates recovers up to 90 percent of process water from tailings slurry, dramatically reducing freshwater makeup requirements. This water-saving capability is especially critical for mining operations in water-scarce regions of northern Mexico including Sonora, Chihuahua, and Durango.
• Full PLC Automation: Programmable logic controller with HMI touchscreen interface manages the complete filtration cycle including plate closure, slurry feed, membrane squeeze (optional), core blow, plate opening, and automatic cake discharge without operator intervention. Cycle times, pressures, and sequencing can be optimized for different tailings characteristics.
• Heavy-Duty Construction: The main frame is fabricated from high-strength structural steel with reinforced hydraulic cylinder mounting. Filter plates are manufactured from reinforced polypropylene with glass fiber filling for dimensional stability under high-pressure conditions, with cast iron and stainless steel options available for high-temperature or chemically aggressive applications.
• Automatic Cloth Washing System: Integrated high-pressure cloth washing manifold cleans all filter cloths simultaneously between cycles, maintaining consistent filtration rates and extending cloth service life. The washing cycle is automatically triggered based on cycle count or filtration time deviation.
• Large Filtration Capacity: Available in sizes from 100 to 500 square meters filtration area, capable of processing 15 to 80 dry metric tons of tailings per cycle depending on the model and tailings characteristics, with typical cycle times of 8 to 15 minutes.

The XAYZG filter press is the cornerstone equipment for filtered tailings disposal systems in base and precious metal mining operations. It processes tailings from copper, gold, silver, lead, zinc, and iron ore concentrators, transforming high-volume slurry streams into transportable filter cake for dry stacking in engineered surface facilities or underground backfill applications. For Mexican silver and gold operations transitioning from conventional tailings ponds to dry stack disposal to meet SEMARNAT regulatory requirements, the filter press provides a proven, reliable dewatering solution. The equipment also serves in concentrate dewatering applications where low moisture content is required for shipping cost optimization and to prevent concentrate liquefaction during maritime transport, a critical safety concern under the International Maritime Solid Bulk Cargoes Code.

Each filter press undergoes complete factory assembly and hydraulic pressure testing before disassembly for shipment. The main frame and hydraulic system ship in open-top containers or flat racks, while filter plates are individually wrapped and packed in fumigated wooden crates. Comprehensive installation and commissioning manuals, PLC programming documentation, and spare parts catalogs are provided. We offer supervised installation and commissioning services by experienced field engineers, operator training programs, and a 12-month warranty on all structural, mechanical, and hydraulic components. Preventive maintenance service contracts with scheduled spare parts delivery are available for ongoing operational support.