Four Key Points to Resolve Material Jamming in Jaw Crushers

1. High Moisture Content or Viscosity of Material

During operation, if the material entering the crushing chamber has high moisture content, the wet particles will fragment into smaller pieces that stick together. These clumps can become lodged between the two jaw plates, causing jamming. Alternatively, inherently sticky materials can clump together and block the crushing chamber, causing jams. Prolonged processing of such materials not only reduces production efficiency but also causes material buildup on the jaw plates, leading to corrosion and shortened plate lifespan. 

2. Excessive Feed Rate

During jaw crusher operation, some operators increase feed rates to accelerate production, exceeding the machine's normal capacity. This prevents timely crushing within the chamber, readily causing jams.

3. Improper Discharge Opening Adjustment

An overly narrow discharge opening prevents timely removal of crushed material, leading to significant accumulation within the crushing chamber and resulting in jams. 

4. Lack of Understanding Regarding Jaw Crusher Parameters

Operators fail to thoroughly review the crusher's specifications before use, particularly material property requirements. When feed material does not meet the crusher's processing specifications, it fails to achieve optimal crushing results upon entering the chamber. This reduces production efficiency and causes material jams. 

Solutions

1.  Conduct preliminary screening and dewatering of materials before feeding them into the jaw crusher to reduce moisture content and viscosity.

2.  Provide specialized training for operators to ensure they understand the crusher's specifications and can maintain continuous, stable feeding, effectively minimizing material jams. 

3. Adjust the jaw crusher's discharge opening appropriately by increasing its size to ensure smooth discharge of crushed material.

4. Before commencing production with the jaw crusher, clearly define all parameters of the equipment, particularly material property requirements. Feed only suitable materials based on the crusher's specifications (e.g., size, hardness). 

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