What is a Fertilizer batching bin (automatic fertilizer batching machine)?

What is a Fertilizer batching bin (automatic fertilizer batching machine)?

The fertilizer batching bin is the core equipment in the batching section of organic fertilizer, compound fertilizer, and BB mixed fertilizer production lines. It consists of multiple independent storage hoppers combined with feeding devices, weighing modules, and PLC control systems. It automatically completes the quantitative proportioning of various raw materials according to preset formulas, replacing manual weighing and proportioning.
Applicable raw materials: animal manure, straw powder, humic acid, urea, monoammonium, potassium chloride, bacterial strains, auxiliary materials and other powdered and granular fertilizer raw materials.

Overall structural composition of fertilizer ingredient warehouse

Storage bin body (ingredient hopper)
Upper rectangle, lower cone; Carbon steel is the main material, and 304 stainless steel can be selected as a corrosive raw material.
Key parameter: Cone bucket inclination angle
Dry granular raw materials: ≥ 50 ° C
High humidity viscous organic fertilizer (cow manure, sludge): ≥ 65 °~70 °, to prevent bridge blockage
Arch breaking and anti blocking device (essential for organic fertilizers)
Warehouse wall vibrator, bottom double spiral arch breaking, pneumatic mixing; Wet powder must be prepared.
Feeding mechanism (three mainstream forms)
Vibration feeder: dry particles, flowable materials (BB fertilizer, nitrogen phosphorus potassium particles)
Variable frequency screw conveyor: powder, viscous raw materials (humic acid, fermented manure)
Pneumatic gate+belt feeding: high flow main material
weighing system
Static weighing (batch type): one warehouse, one scale, accuracy ± 0.1%~± 0.3%; Compound fertilizer and high-end organic fertilizer are preferred choices
Dynamic belt weighing (continuous): continuous production, accuracy ± 0.5%~1%; Commonly used low-cost organic fertilizer production lines
Rack, lower collection belt conveyor
Electrical control system: touch screen PLC, storing multiple sets of formulas, automatic fast and slow feeding, and production data recording

Comparison of two mainstream types of fertilizer ingredient warehouses

1) Static batch batching warehouse (intermittent)
Working method: Each silo is fed separately to a shared weighing hopper, and a batch of weighing is completed and uniformly discharged
Advantages: High measurement accuracy, stable formula; Suitable for compound fertilizers, bio organic fertilizers, and water-soluble fertilizers
Common configurations: 3/4/5/6 warehouses
Capacity: 5-20t/h
2) Dynamic continuous batching bin (belt metering type, shovel feeding batching machine)
Working mode: Each silo has an independent belt scale at the bottom, which continuously and synchronously discharges materials to the summary belt
Advantages: lower cost, convenient loading (direct feeding by shovel), flexible land occupation
Disadvantages: slightly lower accuracy than static scales; Mostly used in ordinary powder organic fertilizer production lines

Reference for selecting the number and capacity of fertilizer ingredient warehouses

Warehouse quantity
BB mixed fertilizer (nitrogen, phosphorus, potassium+auxiliary materials): 4-6 warehouses
Organic fertilizer (manure+straw+microbial agents+auxiliary materials): 3-5 warehouses
Compound biological fertilizer: 5-8 warehouses
Principles of Warehouse Capacity Design
Main material warehouse (manure residue, fermented organic fertilizer): large warehouse, storage capacity of 2-4 hours
Auxiliary material warehouse (straw powder): medium warehouse
Additive/Strain Storage: Small storage with spiral anti arch configuration
Example: A 10 ton organic fertilizer production line with a single warehouse capacity of 15-25m ³ for main materials; Strain storage room 3-6m ³

Fertilizer ingredient warehouse suitable for production line scenarios

Powder/Particle Organic Fertilize  r Production Line (Fermentation Raw Material Ingredients)
Front end ingredients for disc granulation and drum granulation compound fertilizer
BB fertilizer (mixed fertilizer) fully automatic batching system
Humic acid fertilizer, microbial fertilizer, water-soluble fertilizer batching section

Common pain points and design points of fertilizer ingredient warehouses

Blocked material bridging: For high humidity raw materials, priority should be given to increasing the cone angle and bin wall vibrator. It is not recommended to simply increase the discharge port
Wall sticking: The inner wall can be polished or equipped with an air cannon
Accuracy drift: Make sensors waterproof and dustproof in humid and dusty environments; Regularly calibrate the weighing module
Dust: The entire ingredient system can be equipped with a sealing cover and dust removal interface