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The selection of organic fertilizer production lines directly affects the investment cost, product form and market demand. Currently, there are mainly three types of production lines on the market, each with its own characteristics and applicable scenarios:

1. Powdered Organic Fertilizer Production Line (Basic Type)

• Core Process: Raw material pre-treatment → Mixing and batching → Aerobic Fermentation (Core) → Crushing → Screening → Packaging.
• Key Equipment:
• Fermentation Equipment: Tank-type turn-over mixer, tracked turn-over machine, fermentation tank/tower. (Tank-type is the most widely used)
• Crushing Equipment: Semi-wet material crusher, chain-type crusher.
• Auxiliary Equipment: Feeder, conveyor, packaging machine.
• Significant Features:
• Low Investment Threshold: The equipment is relatively simple, with an initial investment of approximately several hundred thousand yuan (depending on the scale).
• Mature Technology: The technology is well-established, and the operation is relatively easy to master.
• Product Form: The finished product is in a loose powder form, with rapid nutrient release, but the appearance, transportation convenience, and added value are relatively lower compared to granular fertilizers.
• Applicable Scenarios: Small and medium-sized organic fertilizer factories, livestock farm manure resource utilization in the initial stage, and planting bases with specific requirements for powdered fertilizers.

2. Granular Organic Fertilizer Production Line (Upgraded Version)

• Core Process: Based on the powder production line, additional steps include → granulation → drying → cooling → (sieving / coating).
• Key Equipment:
• Granulation Equipment: Disc granulator, extrusion granulator, drum granulator. (The extrusion granulator has low requirements for raw material moisture and is widely used)
• Drying and Cooling Equipment: Rotating dryer, cooling machine.
• Sieving and Coating Equipment: Drum sieve, coating machine (optional).
• Significant Features:
• Product Advantages are Outstanding: The granular finished products have good physical properties (not prone to caking, less dust), which are convenient for transportation, storage and mechanized application; the appearance has a high degree of commercialization, improving market acceptance and added value; functional bacteria or trace elements can be added to produce specialized fertilizers.
• Higher Investment Cost: Due to the addition of granulation, drying, and cooling processes, equipment investment and production energy consumption have significantly increased. The initial investment is often in the range of several million yuan.
• More Complex Process: Higher requirements for raw material ratio, moisture control, temperature management, etc.
• Applicable Scenarios: Medium-sized to large-scale specialized organic fertilizer production enterprises, enterprises that pursue high added value and brand operation, and those that need long-distance transportation and sales.

III. Mobile/Simple Fermentation Processing Equipment (Flexible Type)

• Core Concept: Simplify the process, focus on on-site harmless treatment of raw materials and primary fertilizerization.
• Common Forms:
• Mobile Tipping Machine: Equipped with its own power, it can perform tipping of stack piles in the field or simple fermentation sites.
• Covered Composting System: Using a dedicated breathable membrane to cover the stack piles, combined with simple ventilation, reducing the number of tipping operations.
• Small Fermentation Tanks/Reactors: With relatively small processing capacity, suitable for farm or community kitchen waste treatment.
• Significant Features:
• Flexibility and Low Cost: Low investment (ranging from tens of thousands to several hundred thousand yuan), mobile, low site requirements, suitable for decentralized processing.
• Limited Processing Capacity: The processing capacity of a single unit/system is usually below several thousand tons per year.
• Product Positioning: The main goal is to achieve harmless treatment and primary resource utilization of waste, with the decomposed materials mostly used for self-use or nearby field application, with low commercialization level.
• Applicable Scenarios: Livestock farms (especially small and medium-sized ones) for on-site waste treatment, family farms, ecological parks, urban sludge/kitchen waste decentralized treatment sites.
  **Key considerations for selecting the production line: **

1. Raw material characteristics: Type, moisture content, impurity content.
2. Target product: Powder fertilizer or granular fertilizer? Commercial fertilizer or for personal use?
3. Investment budget: Determines the scale and degree of automation of the equipment that can be selected.
4. Production scale: Annual processing volume or annual production volume of finished products.
5. Site conditions: Land area, environmental protection requirements.
6. Market demand: The requirements of the target customers for the product form and price.
   Conclusion:

The organic fertilizer production line is not a “one-size-fits-all” solution. The powder line, the granular line, and the mobile/simple equipment constitute a complete system that meets various needs. Investors should thoroughly analyze their raw material situation, financial strength, target market, and site conditions in order to select the most suitable production line type. From basic fermentation processing to the production of high-value-added granular fertilizers, technological upgrades are accompanied by improvements in investment and management. Clear positioning is the first crucial step to success.