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Application Research and Practice of Industrial Filter Cloth in the Processing of Fluorite in the Mining Industry
Release time:
2025-04-21
With the continuous growth in demand for high-purity fluorite in the metallurgical, chemical, and new materials industries, the efficient development and deep utilization of fluorite resources have become a key focus of the industry. In the entire fluorite beneficiation process, solid-liquid separation is a crucial step, and high-efficiency industrial filter cloth, as a core component of filtration equipment, directly affects the dewatering efficiency, concentrate quality, and overall production cost. This article will focus on the filtration process in fluorite beneficiation, exploring the application value, selection principles, and practical cases of industrial filter cloth, comprehensively demonstrating its key role in improving the efficiency of beneficiation processes.
I. Fluorite Resources and Their Beneficiation Characteristics
Fluorite ( Fluorite ), mainly composed of calcium fluoride ( CaF ₂ ), is widely used in iron and steel smelting, aluminum industry, fluorochemical industry, electronics industry, etc. According to the grade and impurity content, fluorite can be divided into metallurgical grade, ceramic grade, and acid grade, among which acid grade fluorite has the highest purity requirements and is the basic raw material for high-end chemical materials.
Fluorite ores usually coexist with minerals such as quartz, calcite, and barite. In the beneficiation process, effective separation must be achieved through gravity separation and flotation. Due to the fine particle size and high mud content of the concentrate, efficient dewatering treatment is required after flotation to ensure the smooth transportation, storage, and subsequent processing of the product.
II. The Role of Industrial Filter Cloth in Fluorite Dewatering
In the dewatering process of fluorite flotation concentrate, common solid-liquid separation equipment includes belt filter presses, disc vacuum filters, and horizontal vacuum belt filters. The operating efficiency and filtration accuracy of these devices largely depend on the performance of the selected industrial filter cloth.
The main functions of industrial filter cloth include:
- Achieving effective solid-liquid separation to form a dense filter cake;
- Ensuring filtrate clarity to prevent solid particles from penetrating;
- Improving dewatering efficiency to shorten the filtration cycle;
- Having good stripping properties easy for unloading and filter cloth regeneration;
- Acid and alkali corrosion resistance, strong wear resistance adaptable to complex slurry environments.
In practical applications, filter cloths with corresponding pore size, air permeability, and surface treatment processes should be selected according to the different characteristics of fluorite flotation tailings and concentrates to achieve the optimal filtration effect.
III. Selection Points: Design and Matching of Fluorite Beneficiation Filter Cloth
Based on the long-term service experience of Xiamen Citius (Xiamen Citius) Filtration Materials Technology Co., Ltd. in the beneficiation industry, the selection of filter cloth for the fluorite processing process should focus on the following aspects:
1. Filter cloth structure and weaving process
- Monofilament or multifilament woven structure : can be selected according to the required filter cake strength and stripping properties;
- Double-layer woven filter cloth : the upper layer is dense, the lower layer is supportive, suitable for fine-grained materials, and has both interception and water permeability;
- Special surface treatment : such as heat setting, coating, and calendering, to improve de-sludging efficiency and cleaning performance.
2. Balance between filtration accuracy and permeability
Fluorite slurry often contains fine particles. Selecting filter cloth with a pore size in the range of 5-20μm can effectively improve the clarity of the filtrate. By adjusting the fabric density and thickness, a balance between accuracy and permeability can be achieved to ensure that fine particles can be intercepted without reducing the throughput.
3. Corrosion resistance
Residual flotation reagents and impurities in the slurry have a certain corrosive effect on the filter cloth. High-quality polyester ( PET ) or polypropylene ( PP ) filter cloths have good chemical stability and can operate stably for a long time.
4. Adaptability to equipment type
Different beneficiation plants use different dewatering equipment, and the filter cloth size, joint form, and edging method need to be precisely matched. Xiamen Citius (Xiamen Citius) can provide customized filter cloth solutions for belt filter presses, vacuum disc filters, and horizontal belt filters to ensure stable operation and convenient replacement.
IV. Application Case Analysis: Dewatering Optimization Practice of a Fluorite Beneficiation Plant
Taking a large fluorite beneficiation enterprise in Guangxi as an example, the plant processes more than 2000 tons of raw ore per day, and the flotation concentrate has a high water content, which makes transportation difficult and increases drying energy consumption.
After on-site evaluation and improvement by the Xiamen Citius (Xiamen Citius) technical team, a high-permeability double-layer filter cloth model developed specifically for fine-grained fluorite flotation concentrate was selected and used with a belt filter press, achieving the following results: CIT-8240 The moisture content of the filter cake was reduced from the original
- to 28% or less; 22% Filter cloth service life increased
- or more; 30% Dewatering cycle shortened
- and overall processing capacity improved; 15%，整体处理能力提升；
- The filtrate clarity is good, and the system return water does not require further clarification treatment.
This successful case demonstrates the significant value of professional filter cloths in improving beneficiation efficiency, controlling costs, and achieving environmental compliance.
V. Industry Trends and Technological Outlook
With " Dual Carbon ” With the advancement of green mine construction under the strategic background of "dual carbon", the requirements for energy saving, emission reduction, and environmental compliance in the mineral processing industry are becoming increasingly stringent. High-performance industrial filter cloths will continue to upgrade in the following directions:
- Intelligent identification and monitoring of filter cloth wear to achieve early warning replacement;
- Nanometer-level surface treatment technology to improve hydrophobicity / hydrophilic properties;
- New high-temperature resistant and anti-pollution materials to expand the fluorite and other mineral co-production fields;
- Interconnected optimization design with filter press equipment to improve the overall automation and reliability of the system.
As a technology leader in the field of filtration materials, Xiamen Citius (Xiamen Citius) will continue to focus on the pain points and needs of the mineral processing industry, continuously launching high-efficiency and highly adaptable industrial filter cloth products to help customers achieve green development while ensuring efficient resource utilization.
Conclusion
Fluorite, as an important strategic mineral resource in China, its development and utilization is gradually moving towards refinement, intelligence, and sustainability. Industrial filter cloth, as a core component of the solid-liquid separation process, its technological evolution and customization level will greatly affect the production efficiency and cost control of mineral processing enterprises. Through scientific selection and reasonable application, industrial filter cloth will play a greater value in fluorite dehydration treatment, and promote the development of the entire mineral processing industry towards higher quality.
For samples, technical information or cooperation consultation, please contact:
- Company Name: Xiamen Citius (Xiamen Citius)(Xiamen Citius) Filtration Materials Technology Co., Ltd.
- Official Website: www.citius-filter.com
- Email: wyl@citius-filter.com
- WhatsApp ： +86-13950107241
We sincerely looking forward to cooperating with you !
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