• Industrial filter cloth and filter mesh usage - Vertical filter press filter cloth - Iron ore, molybdenum ore
  Xiamen Xidiasi Industrial Filter Cloth On-site Operating Case Pictures:
  Filter press type: Vertical filter press
  Application industry: Iron ore, molybdenum ore
  Material description: Iron ore

From ore to concentrate: The deep value of industrial filter cloth in vertical filter presses

—— Key filtration solutions for iron ore and molybdenum ore beneficiation and dewatering

Driven by global resource efficiency and green mine construction, metal mine processing technologies are constantly moving towards high efficiency, low energy consumption, environmental protection, and automation upgrade. As the final key process in the beneficiation process —— Concentrate dewatering Its efficiency directly affects the quality of mineral products, transportation costs, and the pressure of tailings treatment.

Among them, Vertical filter press As the main equipment for dewatering medium-to-fine-grained mineral slurries, it is widely used in ferrous and non-ferrous metal mining projects such as iron ore and molybdenum ore. The core component that runs through the entire filtration process and determines its operating efficiency and economy is the industrial filter cloth (also known as filter press cloth, filter mesh).

This article will use typical application scenarios of iron ore and molybdenum ore as a starting point to delve into the role, challenges, key parameters, and leading solutions provided by Xiamen Xidiasi in industrial filter cloths in vertical filter presses.

I. Complexity and challenges of iron ore and molybdenum ore beneficiation and dewatering

In the beneficiation process of iron ore and molybdenum ore, the main steps are crushing, grinding, flotation (or magnetic separation), concentration, and dewatering. The concentrate slurry after flotation in the front end has a low solid content and high water content, and needs to be further dewatered by a filter press to produce dry concentrate that is easy to transport and smelt.

Vertical filter press because of its small footprint, low energy consumption, low filter cake moisture content, and high degree of automation It is widely used in the dewatering link of large and medium-sized mines. However, the working environment of this type of equipment is complex, which poses the following challenges to the filter cloth:

Therefore, the filter cloth in the ore beneficiation and filtration process is not a single filtration medium, but a key process material with structural mechanical properties, chemical stability, and dehydration efficiency comprehensive balance.

II. Xiamen Xidiasi: Building a high-strength filter cloth system for the mining industry

Xiamen Xidiasi Environmental Filtration Technology Co., Ltd. focuses on the field of filtration materials 30 years, accumulating rich service experience in the mining industry. The company has a leading domestic industrial filter cloth R&D center, testing laboratory, and pilot production line, and has long provided Customized filter cloth solutions for vertical filter presses for iron ore, molybdenum ore, copper ore, lead-zinc ore, etc. 。

For mining filtration scenarios, Xidiasi filter cloths have the following core advantages:

1.  Filter cloth structure precisely matches operating conditions

• Using High-density weaving technology achieve 10–30μm level filtration accuracy;
• Multi-layer woven structure, high inner layer support strength, and flat outer layer filter surface;
• Design Balanced longitudinal and transverse tension structure adaptable to repeated stretching of vertical filter presses;
• Multiple drainage channel designs to improve dewatering speed and permeability.

2.  Durable and reliable material properties

• Optional High hydrolysis resistance PET alkali-resistant PA wear-resistant PP and other high-polymer materials ；
• Has good resistance to corrosion by mineral slurry reagents (such as foaming agents, collectors, flocculants);
• Temperature resistance up to 120℃ Suitable for warm concentrate dewatering;
• Optional mildew-proof and antibacterial treatment can be used to cope with the high-humidity operating environment of mines.

3.  Seam and edge reinforcement technology

• Seams use High-strength heat welding or multi-needle stitching process to ensure that it does not break under high-pressure stretching;
• Filter cloth edge binding protection to prevent deviation or tearing of corners;
• Supports multiple specifications of guide belt spacing and buckle structure, suitable for different filter press models.

4.  High filter cake stripping efficiency, simple operation and maintenance

• The surface has undergone low-adhesion treatment, and the filter cake has a high automatic stripping rate;
• The filter cloth is not easily blocked, the cleaning cycle is long, and downtime maintenance is reduced;
• Supports the use of online washing, air blowing backwashing, and other automatic cleaning systems.

3. Typical Application Cases: Northwest Large Molybdenum Mine Ore Dressing Plant

Project Background : A large ore dressing plant in Northwest China with an annual output of 200 tens of thousands of tons of molybdenum ore, using a full flotation process. The concentrate slurry needs to be dehydrated by a vertical filter press, with a daily output of concentrate dry powder 1500 tons.

Original Filter Cloth Problems ：

• The filter cake moisture content is too high, reaching 17~19% affecting product grade;
• Short filter cloth service life (approximately 3 weeks), frequent replacement affects production capacity;
• The edges and corners of the filter cloth are easily damaged, and there is a risk of deviation and slurry leakage;
• Under high-temperature operation, the filter cloth shows warping and thermal deformation.

Xiamen Xiadias Improvement Plan ：

• Uses double-layer high-pressure resistant PET woven structure, filtration accuracy of approximately 15μm ；
• The edges use multiple reinforcement processes to enhance structural strength;
• Surface anti-stick coating treatment to ensure that the filter cake falls off quickly;
• Optimize the filter cloth seam design to adapt to the equipment operating trajectory;

Actual Effect ：

• Filter cake moisture content reduced to 13% or so, transportation and storage are more economical;
• Filter cloth replacement cycle extended to 7 weeks or more;
• Downtime rate significantly reduced, annual production efficiency increased by approximately 280 ten thousand yuan;
• Customers have also promoted its use in the dehydration of tungsten ore and lead-zinc ore.

4. Industrial Filter Cloth Promotes High-Quality Development of the Mining Industry

Against the backdrop of tightening global mineral resources and gradually declining mining grades, mining enterprises must not only improve resource utilization efficiency but also strengthen technological investment in dehydration, tailings disposal, and environmental protection. As a key consumable material, the selection and performance of industrial filter cloth directly affect:

• Concentrate moisture control and product grade ；
• Filter press energy consumption and equipment operating stability ；
• Slurry reuse rate and environmental friendliness ；
• Implementation path of mine automation and intelligence level 。

Xiamen Xiadias adheres to " Stable performance +  Customized service ” Dual-drive mode, helping mining enterprises build a full-process service system from filter cloth selection, equipment adaptation, technical consultation to post-training, helping to create a more efficient and greener mineral resource development platform.

Conclusion: The Value of a Filter Cloth Goes Beyond Filtration

Against the backdrop of high-quality development in the mining industry, the filtration system is no longer a traditional " end-of-line equipment ” but the efficiency core, cost key, and environmental protection guarantee in the entire ore dressing process. Industrial filter cloth is the most active executor of this system.

Xiamen Xiadias will continue to support technological innovation and be guided by in-depth application, providing stable, professional, and sustainable filter cloth solutions for the dehydration of various mineral resources such as iron ore and molybdenum ore. Let every filter cloth not only filter the slurry but also help enterprises move towards a green, intelligent, and sustainable tomorrow.