When choosing an NPK blending fertilizer mixer, the following key factors need to be considered:
1. Production Capacity: For large-scale fertilizer production enterprises with a daily NPK blending fertilizer output of over 50 tons, a horizontal ribbon mixer can be selected. Large-capacity drum mixers can achieve continuous production, processing 5-20 tons per hour. Small enterprises, agricultural supply stations, or large-scale growers with a daily output of less than 5 tons can choose a vertical pulverizing and mixing machine or a small double-spiral conical mixer.
2. Material Characteristics: For fertilizers with high particle hardness and difficulty in breakage, various mixers are suitable. For easily breakable coated fertilizers, to reduce particle breakage, a drum mixer or a low-speed horizontal ribbon mixer can be selected. For materials with high moisture content and high viscosity, such as organic-inorganic blended fertilizers, a twin-shaft high-power mixer can be selected, which has a good anti-sticking effect.
3. Equipment Performance: Mixers have various mixing methods, including ribbon mixing, paddle mixing, and drum rotation. Ribbon agitators and paddle agitators provide strong shear force and convection, resulting in rapid mixing; drum agitators, on the other hand, are relatively gentle and cause less damage to particles.
4. Automation Level: Large-scale, modern NPK blending fertilizer production lines can choose a mixer equipped with a PLC control system to improve production efficiency and quality stability. Smaller enterprises with limited budgets can choose semi-automatic or manual mixers, completing some production steps through manual control.
5. Maintenance and Cost: Choosing a mixer with a simple structure and easy maintenance can reduce maintenance costs and downtime. Energy consumption is also an important consideration; in the long run, low-energy-consumption equipment can save significant costs. The choice should be based on the company's financial situation and budget.
