company news about Solutions for Poor Pellet Formation Caused by Improper Compression Ratio in Wood Pellet Mill

Solutions for Poor Pellet Formation Caused by Improper Compression Ratio in Wood Pellet Mills**

1. Adjust Compression Ratio**
• **Replace the Die**:
Select a die with an appropriate compression ratio based on raw material properties and production requirements. For example:
- Hardwood materials may require a die with a higher compression ratio.
- Softwood materials may form overly dense pellets or damage the machine if the compression ratio is too high; use a lower compression ratio in such cases.

• **Adjust the Gap Between Rollers and Die**:
- A gap that is too small increases machine load and accelerates component wear.
- A gap that is too large results in insufficient compression and poor pellet formation.
- For new dies, set the gap to **0.1–0.3 mm**. As the die wears, gradually increase the gap but avoid exceeding **0.5 mm**.

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2. Optimize Raw Material Processing**
• **Control Moisture Content**:
- Maintain moisture content at **12–18%**.
- Excess moisture causes "mud-like clumps" in the pellet mill, while overly dry material lacks binding capacity.
- Adjust by drying wet materials or misting water for dry materials.

• **Adjust Particle Size**:
- Ensure uniform particle size, ideally **2–5 mm**.
- Oversized particles create rough surfaces and loose structures.
- Undersized particles increase grinding costs and energy consumption.

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3. Inspect Equipment Components**
• **Check the Die**:
- Replace severely worn, clogged, or deformed dies.
- Clean clogged die holes with specialized tools.
- Minor die deformation can be corrected through adjustment or repair.

• **Inspect Rollers**:
- Worn rollers reduce compression force. Replace or repair them when wear is significant.
- Ensure rollers rotate smoothly to maintain material flow and compression efficiency.

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4. Adjust Production Parameters**
• **Regulate Feeding Speed**:
- Excessive speed prevents proper compression; insufficient speed lowers productivity.
- Adjust the feed screw speed based on the pellet mill model and production conditions.