Fine grinding · Precision classification · Complete systems

Laboratory Equipment

Process notes

Four laboratory modules and scale-up evidence

Jet milling, impact milling, classification and shaping answer different process questions and can be compared on the same sample.

Example laboratory classification and jet-milling flowsheets · Example flowsheet

How it works and what it targets

Laboratory equipment establishes material response and an operating window. Compact, accessible construction supports research changeovers, but industrial capacity cannot be obtained by simply multiplying laboratory output by machine size. Define the test objectives first, then choose the module, contact materials and atmosphere, recording feed, energy, collection and analytical results.

Reference process steps

  1. 1Describe feed and objectives, then agree sample quantity and measurements.
  2. 2Select one module or comparative trials, recording settings and stream samples.
  3. 3Report results, operating windows and utilities required for scale-up.

Configuration and operating conditions

Jet-milling module

Study fineness, distribution and purity using particle collisions and dynamic classification. Public laboratory references include LNJ-6A and LNJ-18A; wear-resistant liners or inert protection can be discussed. Sample recovery and gas-supply matching are important.

Impact-milling module

Study how impact and classification settings affect size and temperature. Compare contact configurations such as ceramic lining, and evaluate processing efficiency, deposits and cleaning between samples.

Air-classification module

Use existing powder for coarse removal, fine removal or fraction separation, collecting each stream for size analysis and mass balance. Density and shape also influence results.

Shaping module

Vary intensity and time while using classification to observe morphology, tap density and fines yield. Evaluate both feed and product rather than relying on a single result image.

Information needed for selection

Provide sample identity and safety information, existing test results, size/morphology/purity targets, available sample mass and intended industrial output. Sample quantity, timing and fees are agreed for the test plan.

Discuss selection inputs

Trial and acceptance considerations

Reports should link sample ID, settings, size-analysis method, recovered mass, temperature and contamination tests. Scale-up advice explains differences in continuous operation, gas supply and collection.

Public references