01Filler and Mineral Ingredients in Fertilizer
Weighing filler and mineral ingredients used in fertilizer recipes by recipe ratio and adding them to the blend.
Fertilizer and Granulation PlantsMacro Dosing – Weighed Feeding of High-Quantity Recipe Ingredients
PRO MAKINA · Macro Dosing
- Duty
- Weighed dosing of high-quantity ingredients
- Feeding
- Vibrating discharge below the bins
- Weighing
- Common weigh hopper on load cells
- Control
- Recipe via operator panel and PLC
Overview
Batch Weighing for the High-Quantity Components of a Recipe
Macro dosing weighs ingredients used in far larger amounts than micro additives — such as minerals, salt, DCP, marble powder and fillers — and delivers them to the process on a weight basis. Larger bins and a scale with a wider measuring range are used for these amounts.
The ingredients are held in bins arranged above a common weigh hopper. Following the recipe sequence, the vibrating discharge of the relevant bin runs and the product flows into the weigh hopper on load cells. When the target amount approaches, the feed is stopped; the material still in free fall is accounted for in the control system.
Flexible connections between the weigh hopper, the bins and the downstream equipment prevent dust leakage and isolate the weighing from mechanical loads. When the batch is complete, the hopper discharges to the mixer or collecting line.
01Process Flow
Macro Dosing Process Flow
The diagram shows ingredients fed from the bins by vibrating discharge into the weigh hopper, weighed in recipe sequence and transferred to the mixer or collecting line when the batch is complete. Silo, mixer and collecting conveyor are separate equipment.
Scroll horizontally to view the full diagram.
Product line
- 1
Ingredient bins: Each ingredient is held in its own bin above the weigh hopper.
- 2
Vibrating discharge: The discharge of the bin in sequence runs; product flows into the weigh hopper.
- 3
Weighing and cut-off: Load cells monitor the weight; the feed stops as the target approaches.
- 4
Batch transfer: When all ingredients are weighed, the hopper discharges to the mixer or collecting line.
Recipe control
- A
Recipe and sequence: The operator panel and PLC define ingredients, target amounts and sequence.
- B
Weighing record: The weighed amount of each ingredient is recorded.
Bin volume, amount per batch and batches per hour are determined together with how often and by which equipment the bins are refilled.
02Applications
Macro Dosing Applications
01
02Feed Mineral Ingredients
Weighing feed recipe minerals such as salt, DCP and marble powder. Low-quantity additives such as premix and vitamins are weighed separately by micro dosing.
Micro Dosing
03Ceramic, Glass and Building Material Ingredients
Weighing sand and mineral powders by recipe. For abrasive products, bin outlets and flexible connections are selected accordingly.
Mining and Mineral Processing03Design & Manufacturing
Custom Macro Dosing Design and Manufacturing
PRO MAKINA engineers macro dosing systems around the number of ingredients, amount per batch, batches per hour and the flow properties of the ingredients. Bin volume and geometry, discharge equipment, weigh hopper and load-cell arrangement are selected together.
- Bins above a common weigh hopper
- Vibrating bin discharge
- Dust-tight flexible connections
- Operator panel and PLC recipe control
Process Design Data
- 01
Ingredients
Number of ingredients, product type, particle size, bulk density and flowability.
- 02
Batch and Rate
Amount per batch, batches per hour and recipe ratios.
- 03
Bins and Filling
Bin volume, geometry and filling from silo or conveyor.
- 04
Weighing
Weigh hopper volume, load-cell arrangement and measuring range.
- 05
Control and Connection
Operator panel, PLC, dust extraction and mixer or collecting line connection.
Weighing accuracy, bin volume and batch capacity are defined from ingredient and recipe data; no generic values are stated on this page.
04FAQ
Macro Dosing FAQ
What is macro dosing?
Weighing ingredients used in large amounts in a recipe — such as minerals, salt, DCP and fillers — on a weight basis and delivering them to the process.
How does a macro dosing system work?
The vibrating discharge of each bin runs in recipe sequence and feeds the product into the load-cell weigh hopper. The feed stops as the target approaches; when the batch is complete, the hopper discharges.
How does it differ from micro dosing?
Macro dosing uses larger bins and scales for higher amounts. Micro dosing weighs low-quantity additives on a smaller-range scale with screw feeding.
How does it differ from a weigh belt feeder?
Macro dosing weighs in batches. A weigh belt feeder continuously measures the flow rate of product on the belt and controls the rate through belt speed.
What information is needed for a quotation?
Ingredient list and properties, amount per batch, batches per hour, bin filling method and details of the mixer or line to be fed.
05Resources
Related Machines and Plants
Micro DosingScrew-fed batch weighing of low-ratio additives.Silo SystemsStorage of bulk products for stock and process use.Bunkers & HoppersBuffer volume and steady discharge ahead of feeding.Dosing SystemsWeighed or volumetric feeding of raw materials.
Technical Quotation
Request a technical quotation for macro dosing
Share your ingredients, batch amounts and production rate, and we will define the macro dosing system together with you.
Information Needed for a Technical Quotation
- Ingredient list and properties
- Amount per batch
- Batches per hour
- Bin filling method
- Mixer or line to be fed
- Automation and dust extraction requirements