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Spiral mesh belt, belt-type press filter mesh belt, dewatering of sand and sludge in the mechanism sand industry.
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Detailed Description
- Spiral mesh belt, belt-type press filter mesh belt, dewatering of sand and sludge in the mechanism sand industry.
- Filter type: Belt press filter
Application industry: Mechanically produced sand
Material handling description: Sand and mud dewatering
Filter cloth model: 055R04
Common Problems and Mesh Belt Solutions for Dewatering in Mechanically Produced Sand Washing Lines
— The Critical Role of the Mesh Belt in Belt Press Filters, as Seen from the Operational Site
In a manufactured sand production line, sand washing and dewatering are often regarded as “auxiliary processes.” However, in actual operation, they frequently become critical bottlenecks that limit the overall line efficiency. Particularly in wet sand-making processes, where fine sand, stone powder, and slurry content are high, any instability in the dewatering system not only affects the quality of the finished sand but also directly drives up energy consumption, labor costs, and maintenance expenses.
Based on extensive field experience, Regarding the dewatering issue in sand-washing lines, in most cases, the problem is not due to insufficient equipment capacity but rather to a mismatch between the selection of mesh belt filter cloth and the operating conditions. 。
1. After dehydration, the sand has a high moisture content and fails to meet the requirements for stacking or transportation.
Common manifestations
The finished sand has a relatively high moisture content, making it prone to collapse when piled up.
Leaking during transport, with mud attached.
Backend screening and storage are affected.
Root cause of the problem
The mesh belt has insufficient permeability, resulting in low gravity dewatering efficiency.
The drainage channels in the high-pressure zone are blocked, limiting the pressing effect.
The mesh belt surface tends to become clogged, and the drainage rate decreases as the running time increases.
Network belt countermeasures
Choose a spiral mesh belt with clear drainage channels and a structurally stable design.
Avoid solely pursuing small apertures while neglecting drainage efficiency.
Match the mesh belt structure of different dewatering zones according to the solid content of the feed.
II. Fine sand and stone powder are severely lost, with low recovery rates.
Common manifestations
The filtrate is cloudy, and the sedimentation tank is under increased load.
The output of finished sand is relatively low.
The proportion of fine sand is unstable.
Root cause of the problem
The mesh belt has an unreasonable pore structure and insufficient initial interception capacity.
When the feed fluctuates, fine particles are carried away directly with the water flow.
The mesh belt tension is uneven, causing localized pore enlargement.
Network belt countermeasures
Optimize the mesh belt structure rather than simply reducing the aperture size.
While ensuring drainage efficiency, enhance the stable retention capability for fine sand and stone powder.
Ensure that the mesh belt is compatible with the equipment tensioning system to reduce local deformation.
3. The mesh belt frequently gets clogged, resulting in high cleaning pressure.
Common manifestations
Mud and stone powder accumulate on the surface of the mesh belt.
High-pressure water cleaning is frequent and consumes large amounts of water.
The dehydration capacity significantly decreases with operating time.
Root cause of the problem
The mesh belt surface structure is too dense.
High proportion of stone powder, easily embedded in pores.
The flushing system is incompatible with the mesh belt structure.
Network belt countermeasures
Select a spiral mesh structure with enhanced anti-clogging performance.
Maintain the renewability of the mesh belt’s porosity for easy rinsing and recovery.
Reduce the likelihood of stone powder embedding through structural design, rather than relying on high-pressure flushing.
4. The mesh belt wears out quickly, resulting in a significantly shorter service life.
Common manifestations
The edges or middle of the mesh belt show premature wear.
Short operating cycle, frequent replacement.
High downtime maintenance costs
Root cause of the problem
Quartz sand in manufactured sand has high hardness and strong abrasiveness.
Insufficient strength and wear resistance design of the mesh belt.
Misalignment and concentrated friction exacerbate localized wear.
Network belt countermeasures
Select a high-strength spiral mesh belt suitable for sand and gravel applications.
Improve overall structural stability and reduce localized stress.
Reduce the additional load on the tensioning and guiding systems by selecting appropriate components.
5. The equipment operates unstably and is prone to deviation and slippage.
Common manifestations
The mesh belt frequently deviates from its path.
The tensioning system is adjusted frequently.
Increased operating noise
Root cause of the problem
The mesh belt structure lacks sufficient stability.
Long-term operation under high load causes dimensional changes.
Low compatibility between the mesh belt and the equipment structure.
Network belt countermeasures
Select a spiral mesh belt with higher dimensional stability.
Consider the equipment structure and operating mode already during the selection phase.
Avoid the simplistic approach of “just replacing the mesh belt without examining the system.”
Six, neglecting the selection of the mesh belt is the root cause of repeated dehydration problems in sand-washing lines.
In many manufactured sand projects, once the dewatering system encounters issues, the usual first-line response is to increase the pressing pressure, extend the pressing time, or replace the equipment. However, from an engineering practice perspective, By reevaluating the compatibility between the mesh belt filter cloth structure and operating conditions, it is often possible to address core issues at a lower cost. 。
The mesh belt is not a simple consumable part—it is the true “working interface” of the belt press filter.
Conclusion
The dewatering performance of a mechanism sand washing line depends on the coordinated operation of three key factors: equipment, process, and mesh belt. Neglecting the proper selection of the mesh belt often results in the system operating for long periods in a state that “can run but lacks stability.” By selecting and applying spiral mesh belt filter cloths appropriately, not only can dewatering efficiency be enhanced, but the overall operational stability of the entire line can also be significantly improved.
Xiamen Xiadis Filter Cloth Manufacturer will continue to base its offerings on engineering practice, providing industrial filter cloths and mesh belts that are better tailored to the specific operating conditions of the mechanism sand industry, thereby supporting the long-term stable operation of sand-washing lines.
Filter cloth sample—please contact:
📞 139 5010 7241
📧 Email: wyl@citius-filter.com
💬 WeChat & WhatsApp: +86-13950107241
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