How it works and what it targets
LNGS uses steam as the motive fluid. Particles accelerate and collide; a classifier sends acceptable powder to collection and returns coarse particles for further milling. The process can combine milling and drying or integrate steam generated from industrial waste heat. Direct use of a steam supply depends on pressure, temperature, cleanliness, continuity and the system heat balance.
Reference process steps
- 1Assess feed and condition steam: establish moisture, impurities, thermal stability and energy availability.
- 2Steam-jet milling and classifier return jointly control fineness and throughput.
- 3High-temperature collection and finishing manage condensation, discharge temperature and product moisture.
Configuration and operating conditions
Mineral and residue routes
Fly ash, sulfur-fixation ash, granulated slag and steel slag can be evaluated against fineness and downstream building-material use. Ground calcium carbonate, quartz and pyrophyllite require separate wear, purity and morphology assessment. Fineness alone does not demonstrate activity or a product grade.
Combining milling and drying
For desulfurization gypsum, distinguish free and crystalline water. Petroleum coke and lignite need composition and thermal-behaviour checks. Pseudoboehmite and active calcium silicate need phase and end-use verification. Historical tests on different materials are not interchangeable.
Information needed for selection
Provide steam pressure, temperature, available flow and variability, operating schedule, feed/product moisture, target size and end use. Include interface conditions for existing waste-heat systems.
Discuss selection inputsTrial and acceptance considerations
Meter steam and electricity separately, stating steam origin and the cost boundary. Verify size, yield, moisture, phase and end-use performance. Capacity and fineness depend on material trials and system design.