When planning a small-scale organic fertilizer produciton line, the number of drum screener machines should be determined based on the production scale, process flow, and raw material characteristics. The following is a detailed analysis:
1. Production Scale: Small production lines (under 5,000 tons annual output) typically require one drum screen. Medium-sized production lines (10,000-20,000 tons annual output) may require two drum screens. One is used to screen the raw materials to remove impurities, and the other is used to screen the finished product to ensure product quality.
2. Process Flow: If the raw materials contain a high concentration of impurities, such as stones or plastic, it is recommended to install a drum screen at the front end of the production line for pre-screening. At the end of the line, it is used to screen the finished pellets to ensure uniform particle size. Typically, at least one drum screen is required. Particles that do not meet the required particle size after screening must be reprocessed through a return system. If the return volume is large, consider adding a drum screen specifically for return screening.
3. Raw material characteristics: Screening of materials such as livestock and poultry manure is more challenging, so increasing the number of screening cycles or configuring two drum screens may be necessary. Low-moisture, low-viscosity materials, such as straw and sawdust, are relatively easy to screen, and a single drum screen is generally sufficient.
4. Equipment performance: Select a drum screen with high screening efficiency, long screen life, and strong adjustability to best suit different raw materials and production needs.
In summary, a small-scale organic fertilizer production line can generally be equipped with one to two drum screens to meet production needs. The specific number should be considered based on the production scale, process flow, and raw material characteristics.
