How it works and what it targets
LNI mills through high-speed hammer impact and interaction with the liner, while an internal turbine classifier removes acceptable fines. Milling intensity, classifier speed, feed and airflow are coupled; increasing speed alone does not guarantee higher output or a narrower distribution. Fibrous and sticky feeds require attention to geometry, residence time and deposits.
Reference process steps
- 1Meter feed consistently to avoid load surges affecting milling and classification.
- 2Classify after impact milling and return coarse material.
- 3Collection and gas conditioning jointly manage temperature, humidity and filter loading.
Configuration and operating conditions
Cooling, low humidity and food feeds
Cooled or dried inlet air, short residence and release-friendly filter media can be evaluated. Oats, proteins, nutritional powders and meal replacements require checks of oil, sugar, fibre and cleaning/changeover needs. A food application does not by itself establish a hygiene certification.
Heat, positive pressure and protective gas
Hot or positive-pressure arrangements serve specific process boundaries. LNS closed-loop configurations address feeds needing limited air or moisture exposure. SAP, polyacrylamide and urea require separate evaluation and are not interchangeable materials.
Wear and maintenance
Select hammers, tracks, liners and classifier wheels for abrasion and impurity limits. Include access, retention zones, seals and filter cleaning in changeover planning. Ceramic liners reduce some metal contact but still require wear-source testing.
Information needed for selection
Submit oil/sugar/moisture content, fibre and adhesion behaviour, temperature sensitivity, feed size, product distribution, throughput and cross-contamination limits.
Discuss selection inputsTrial and acceptance considerations
Record product temperature, size distribution, yield, power and deposits. Sustained operation and cleaning checks establish whether short trials can be scaled up.