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Industrial filter cloth, filter mesh applications - vertical filter press - salt brine purification workshop, calcium carbonate, calcium sulfate
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Detailed Description
- Industrial filter cloth and filter mesh applications - Vertical filter press - Salt industry brine purification workshop Calcium carbonate Calcium sulfate
Xiamen Citius industrial filter cloth on-site operating condition use case diagram:
Filter press type: Vertical filter press
Application industry: Salt industry
Material description: Brine purification workshop Calcium carbonate Calcium sulfate
Filter cloth model used: 15P
Application of industrial filter cloth and filter mesh in vertical filter presses —— A key link in the brine purification process of the salt industry
With the widespread demand for salt products such as edible salt and industrial salt in the global market, the stability and efficiency of salt production processes have become an important part of the core competitiveness of enterprises. In the salt production process, brine purification is an indispensable link, especially in the process routes of natural brine, well salt, and sea salt, its impurity content and stability directly affect the quality of salt. Among them, ** Calcium carbonate ( CaCO ₃ ) and calcium sulfate ( CaSO ₄ ) ** As typical insoluble inorganic impurities, they often exist in crystalline or colloidal forms and must be removed through effective solid-liquid separation processes.
In this process, Industrial filter cloth and filter mesh As the core components of filtration equipment, their performance directly affects filtration efficiency, filtrate clarity, filter cake dehydration rate, and equipment operating stability. Especially in Vertical filter presses which are widely used in salt plant brine purification workshops, the filter cloth system is the " core muscle ”。
This article will combine typical process flows to analyze the application characteristics, selection principles, and key performance optimization strategies of industrial filter cloths in this scenario, and take Xiamen Citius (Xiamen Citius) Filtration Materials Technology Co., Ltd.'s products as an example to discuss its practical cases and technical value in brine purification in the salt industry.
I. Difficulties in solid-liquid separation in brine purification
1. Complex impurity types
In addition to soluble sodium chloride, natural brine usually contains Mg² ⁺ 、 Ca² ⁺ 、 SO ₄ ² ⁻ 、 CO ₃ ² ⁻ Ions, after adding lime milk, soda ash, etc. in the pre-purification process, a large amount of calcium carbonate, calcium sulfate, and magnesium hydroxide precipitates will be generated. These solid particles have a wide particle size distribution and often contain a large number of flocs and colloids, making filtration more difficult.
2. High requirements for filter cake moisture control
To ensure the efficiency of subsequent mother liquor reuse or salting-out concentration, the filtrate needs to be as clear as possible, and the filter cake needs to be thoroughly dehydrated for easy transportation and processing.
3. High requirements for filter cloth corrosion resistance and regeneration ability
Due to the high concentration of chloride ions and alkaline substances in the brine, the filter cloth needs to have good corrosion resistance; at the same time, the filtration cycle is short and the replacement frequency is high during daily operation, and the regeneration cleaning ability is a key indicator for controlling maintenance costs.
II. Technical advantages of vertical filter presses and filter cloth matching
1. Process principle brief description
Vertical filter presses use vertically arranged filter plates and filter cloths to form a closed filter chamber, achieving high-intensity pressure filtration under pressure. Its characteristics are small footprint, high degree of automation, and strong pressing force, suitable for processing high-concentration, low-mobility slurry materials.
2. Filter cloth structural requirements
- High-strength tensile strength : To cope with repeated movement and hydraulic impact during multiple pressing;
- Excellent de-caking performance : Allows calcium carbonate and calcium sulfate precipitates to peel off quickly, preventing clogging of the cloth surface;
- High filtration accuracy : High filtrate clarity, preventing residual impurities;
- Strong alkali and chlorine corrosion resistance : Extends the service life of the filter cloth;
- Good cleaning performance : Adapts to the online cleaning requirements of salt plants, reducing the replacement frequency.
III. Xiamen Citius (Xiamen Citius) Industrial filter cloth technical solutions
As a professional enterprise specializing in filtration materials for more than 30 years, Xiamen Citius (Xiamen Citius) Filtration Materials Technology Co., Ltd. has developed a variety of filter cloth systems suitable for vertical filter presses for the filtration difficulties in the salt industry, with the following technical advantages:
1. Selected single filaments + Composite weaving structure
Through multi-layer weaving technology, the filter cloth has the characteristics of smooth surface, strong cake peeling, and good anti-clogging performance. Especially suitable for CaCO ₃ /CaSO ₄ Fluffy precipitate, rapid filter cake separation, and stronger operational stability.
2. Customizable filter pore size for superior filtration efficiency.
Available 5–50μm Selection of industrial filter cloths with different pore sizes, customized according to the size of impurities, effectively improving solid-liquid separation efficiency and ensuring filtrate clarity.
3. Corrosion-resistant fibers and edge binding technology
Using alkali-resistant polypropylene / Polyamide materials, supplemented by salt corrosion-resistant edge binding wires and multi-needle sewing technology, effectively extending the service life of the filter cloth in high-salt environments and preventing edge leakage.
4. Easy-to-clean structure, suitable for online maintenance
Xiadiya Si (Xiamen Citius) The filter cloth has good backwashing ability, which facilitates online spraying, degreasing, and alkali washing maintenance in high-frequency operation conditions, reducing downtime.
IV. Analysis of Actual Application Cases
Case Background:
A large-scale salt chemical enterprise in East China introduced a vertical filter press for the pretreatment of brine purification of calcium carbonate and calcium sulfate in the seawater salt making process. The original use of ordinary domestic filter cloth had the following problems:
- Severe filter cake adhesion, low cake removal efficiency;
- Frequent monthly replacement cycles, high maintenance costs;
- Unstable filtrate turbidity, affecting the subsequent process of salt precipitation concentration control.
Solution:
Introducing Xiadiya Si (Xiamen Citius) After customized filter cloth (using composite monofilament structure, alkali-resistant materials), the operation performance is as follows:
- Filter cake separation efficiency increased by nearly 40% ，basically achieving automatic cake discharge;
- Filter cloth replacement cycle from 30 days extended to 90 days or more;
- Stable filtrate turbidity, stable operation of subsequent processes, salt purity increased 1.3% 。
Customer feedback: " Xiadiya Si (Xiamen Citius) The filter cloth not only improves filtration efficiency but also reduces operating costs, making it a trustworthy partner. ”
V. Conclusion: Filtration Support for Promoting Green Manufacturing in the Salt Industry
The salt industry is also gradually transforming and upgrading towards green, efficient, and automated directions. Whether it is well salt, sea salt, or comprehensive salt chemical processes, the filtration system in the brine purification stage will become one of its core links.
Xiamen Citius (Xiamen Citius) Relying on its technological accumulation, material research and development, and process optimization in the fields of industrial filter cloth and filter belts, it continues to provide more forward-looking solutions for the salt industry. Especially in high-pressure filtration scenarios such as vertical filter presses, its products have been stably operating in many leading salt companies, verifying their excellent adaptability and value.
In the future, filtration technology will not only be a part of the production process but also a key tool for enterprises to improve efficiency, reduce energy consumption, and promote environmental protection. Choosing a high-performance industrial filter cloth lays a solid foundation for stable system operation, product quality control, and sustainable development.
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