The stability, automation level and energy consumption of dewatering equipment directly affect the overall production efficiency of mines. As a mature, efficient and highly automated continuous dewatering device in the industry, the vacuum disc filter has become a mainstream preferred equipment for concentrate dewatering, tailings dry stacking and slurry purification in mineral processing plants at home and abroad, thanks to its stable operating performance, wide material adaptability, low energy consumption and low operation and maintenance costs. It is widely used in new construction projects and old production line upgrading and renovation projects of large and medium-sized mines worldwide.
The vacuum disc filter realizes fully automatic solid-liquid separation relying on the vacuum negative pressure adsorption principle. Featuring a scientific and compact overall structure, the equipment is mainly composed of multiple precision filter discs, main shaft transmission system, slurry storage tank, vacuum pressure stabilization system, automatic discharging device, intelligent electric control system and anti-corrosion frame. During operation, multiple fan-shaped filter discs rotate at a constant speed and immerse into the slurry in sequence. Under stable negative pressure, solid particles in the slurry are quickly adsorbed on the surface of the filter cloth to form uniform and dense filter cakes. With the continuous rotation of the filter discs, the filter cakes go through natural dewatering and vacuum deep dewatering stages to effectively remove free moisture inside the materials. When the filter discs rotate to the discharging area, the filter cakes are automatically scraped off by special tools. The whole process forms a closed-loop continuous operation including feeding, adsorption, dewatering, liquid removal and discharging, supporting 24-hour uninterrupted stable production and fully meeting the high-load continuous operation needs of large-scale mineral processing plants.
This filter equipment has an extremely wide material adaptation range, which can efficiently process fine-grained and micro-fine-grained slurry materials such as iron concentrate, copper concentrate, lead-zinc concentrate, fluorite ore, potassium feldspar, quartz sand, manganese ore, coal slime and mine tailings. Aiming at the complex working conditions of different mining areas, the equipment can be customized with wear-resistant and anti-corrosion structures, thickened frames, acid and alkali resistant filter cloths and reinforced vacuum pipeline systems. It can effectively adapt to high-wear, high-humidity and slightly corrosive slurry environments, greatly improving the adaptability and service life of the equipment in complex overseas mining areas. Different from traditional filter press equipment, the vacuum disc filter abandons the intermittent operation mode, eliminating frequent equipment opening and closing, manual discharging and pressure relief waiting processes. It greatly improves working efficiency, with large single-machine processing capacity, small floor area and lower energy consumption, perfectly solving the industry pain points of traditional dewatering equipment such as low production capacity, high labor cost, large site occupation and unstable dewatering effect.
The vacuum disc filter has prominent advantages in production effect and environmental protection benefit. With high dewatering precision, the moisture content of the produced filter cake is uniformly controllable, which effectively reduces the comprehensive costs of subsequent material stacking, transportation and drying processing, and avoids mildew, loss and secondary pollution of materials caused by excessive water content. Meanwhile, the filtrate separated by the equipment is clear with extremely low impurity content, which can be directly returned to the production process for recycling. It greatly saves industrial water resources, reduces the water consumption and sewage discharge pressure of mining enterprises, fully complies with the green production, energy saving and emission reduction environmental protection policies of mines in various countries worldwide, and helps mining enterprises realize clean and standardized production.
Equipped with a full-automatic PLC intelligent control system, the equipment supports one-key start, intelligent speed regulation, automatic vacuum pressure stabilization and real-time monitoring of operating status. Operators can easily adjust the rotation speed of filter discs, feeding amount and negative pressure parameters without full-time on-duty personnel, which greatly reduces manual operation and maintenance costs. The equipment operates stably with low failure rate and simple operation and maintenance. Daily maintenance only requires regular inspection of filter cloth status, cleaning of pipeline blockages and maintenance of transmission parts to maintain long-term efficient working conditions, making it very suitable for long-term stable use in large overseas mines and large-scale mineral processing production lines.
