This multi-purpose grinding plant is separated into two sections with two walkable platforms.
In the first section the product feeding and homogenization as well as the dosing into the pneumatic conveying system is done.
For the product feeding with BIG-BAGs (each 1500 kg/3300 lb) there are two separate feeding points with lifting device. The dosage of the downstream screw conveyor is adjustable from 400 to 1000 kg/h (880 to 2200 lb/h). It is possible to add a anti-caking agent by a separate auger filler if needed. The grinding stock is homogenized to a well conveyable grain size with a Lump Breaker afterwards. The Rotary Valve WD 250 is feeding the product into the closed grinding system.
In the second section a first classification of the input material is done with a screening machine, which comes with three single screen decks.
The impact mill REKORD C-2SSt with a variable-speed drive grinds the oversized materials. A pin-disk-rotor and stator is used as grinding element and a metal separator protects them from foreign material. With a integrated conveying air conditioning it is possible to use a reduced milling air depending on the product requirements.
After refeeding of the material to the screening machine for classification the end-product is collected in BIG-BAGs on a weighing system. For a narrowly defined grain size with a constant product quality the oversized material is re-feeded to the grinding system.
Input material: different sodium phosphates; sodium aluminium phosphate
Capacity: up to 1000 kg/h (2200 lb/h)
Final grain size: 99 % < 200 µm (70 Mesh)
Complete design in stainless steel
Material input by two BIG-BAG discharge systems
Crane for BIG-BAG transport
Feeding of input material by Jehmlich-Screw-Conveyor
Lump breaker with extraction device after BIG-BAG discharging
Screening maschine for determination of the final grain size - 500, 200 or 150 µm (30, 70 or 100 Mesh)
Refeeding of coarse material to mill
Pin mill REKORD C-2SSt
Conveying air filter in segmental construction for quickly cleaning
Cooling system for pneumatic conveying air - to reduce the grinding temperature
Product discharge into two BIG-BAG filling stations with weighing system
Optional feeding of anti-caking agent for specific products
Operation by 19"-touchpanel
Process value archiving
Metal separator for mill protection and quality assurance
Pneumatic conveying as circulation system