The new type two in one organic fertilizer granulator integrates granulation and rounding. If the granules are not round enough, have a rough surface, obvious edges, or are uneven in size, the solution can be found by adjusting five aspects: raw materials, moisture content, rotation speed, structure, and operation.

1. Controlling Raw Material Moisture is Fundamental

Too low moisture content results in poor material adhesion, leading to loose and rough granules; too high moisture content causes clumping, sticking to the machine walls, and uneven granule size. The suitable moisture content for bio-organic fertilizer granulation is generally controlled between 25% and 35%, with slight adjustments based on the degree of fermentation to ensure the material can clump together when squeezed but crumbles easily upon touch, resulting in a finer surface after granulation.

2. Optimize Raw Material Fineness and Uniformity

Insufficient raw material fineness, excessive impurities, and excessively long fibers will lead to uneven granule surfaces. It is recommended to grind the raw materials to at least 80 mesh to remove large hard objects; ensure uniform mixing to avoid localized mixing of dry and wet materials, guaranteeing consistency of the material entering the machine for rounder granules.

3. Adjust the main machine speed and rounding time. If the granulation speed is too high, the material will be thrown out before it can be rounded; if the speed is too slow, large clumps will easily form. Appropriately reducing the granulation zone speed and extending the residence time in the rounding zone allows the granules to roll and grind thoroughly within the machine, naturally eliminating sharp edges and significantly improving roundness.

5. Standardize feeding and discharging operations. Inconsistent feeding will result in uneven granule size and poor roundness. Continuous and uniform feeding should be maintained. Poor discharge and an unreasonable return material ratio will also affect the molding effect. Properly controlling the return material ratio, returning fine powder for regranulation, will result in fuller and smoother finished granules.

Through these adjustments, the roundness of the granules can be effectively improved, producing high-quality organic fertilizer granules with smooth surfaces, uniform particle size, and high roundness, enhancing the appearance and market competitiveness of the finished product.