If the Industrial Vibrating Screen is Blocked, How do You Fix It?

In the mining industry, vibrating screens play a crucial role in the classification of materials. However, many operators face the frustrating issue of screen blockage during gravel classification. This article aims to shed light on the common causes of vibrating screen failures and provide actionable solutions to enhance operational efficiency.

Common Causes of Vibrating Screen Blockage
Material Density and Screen Selection: High-density materials can lead to blockages if the selected screen is not appropriate. Using a screen that matches the material density is essential to prevent clogging.
Moisture Content: Wet materials are prone to sticking and clumping, which can obstruct the screen. If the moisture content exceeds 5%, pre-drying or dehydration is necessary before screening.
Static Electricity: Materials that generate static electricity tend to cling together, causing blockages. This is particularly problematic for fine particles.
Lightweight Materials: Lighter materials may not pass through the screen effectively, leading to accumulation and blockage.
Screen Wire Diameter: A thick wire diameter can hinder material flow and increase the likelihood of clogging.
Lack of Cleaning Mechanisms: Screens without effective cleaning devices, such as rubber elastic balls (cleaning tennis balls), are more susceptible to blockages.

Effective Treatment Measures for Screen Blockage
To mitigate these issues, consider implementing the following strategies:
Material Analysis and Screen Selection: Conduct a thorough analysis of the materials being screened and select screens that are specifically designed for those materials.
Moisture Management: For materials with high moisture content, ensure proper drying or dehydration processes are in place before screening. If moisture exceeds 8%, consider wet screening methods.
Adjust Crushing Methods: For flaky or irregularly shaped materials, adjust crushing techniques and ensure particle size compatibility across different processes.
Optimize Cleaning Devices: Install an adequate number of rubber elastic balls under the screen based on mesh size to facilitate effective cleaning during operation.
Tension Adjustment: Properly adjust the tension on the vibrating screen. Adequate tension creates a slight secondary vibration that helps reduce blockage by promoting material flow.
By understanding these common causes and implementing effective treatment measures, global miners can significantly reduce downtime caused by vibrating screen blockages, ensuring smoother operations and increased productivity.

Vibrating screens are indispensable in material classification within the mining sector. Addressing issues related to screen blockage not only enhances operational efficiency but also minimizes maintenance costs. By adopting best practices in material handling and equipment maintenance, miners can optimize their processes and achieve better results in their operations.

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