Superheated Steam Jet Mill

Using superheated steam as the grinding gas, improved energy efficiency

Superheated Steam Jet Mill
  • Superheated Steam Jet Mill
  • Superheated Steam Jet Mill

    • Superheated Steam Jet Mill

    Using superheated steam as the grinding gas, improved energy efficiency

    • Superheated steam source providing high energy utilization rate and low operating cost
    • Grinding particle size range D50: 0.5-10 μm
    • Revolutionary innovation of dry grinding technology
    • Improved energy efficiency, low carbon, energy saving and environmental protection for plants
    • Applicable: bulk solid wastes such as steel slag, slag and fly ash; non-metallic minerals such as calcium carbonate, talc and quartz; new materials such as lithium carbonate, lithium iron phosphate and precipitated silica.
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    How it works

    As an upgraded version of the conventional jet mill, the superheated steam jet mill utilizes a unique high-temperature mechanical sealing technology and cooling technique. High-temperature steam is used as the kinetic energy source to propel materials to collide and grind at an accelerated speed through a specially designed Laval nozzle. After being ground, the materials undergo cyclone classification, at which point a heat preservation collection system collects the qualified powders while any coarse particles fall back into the grinding chamber. The entire process is achieved without using any liquids.

    Advantages
    • Producing nanometer-size powders under a dry process
    • Superheated steam source creating a working pressure between 8-40 bar and steam temperature between 230-360 ℃, which can also dry the powder with heat
    • High jet velocity provides high kinetics and strong grinding force with nozzle outlet velocity up to 1020 m/s, suitable for finer powder production
    • Low viscosity of steam makes it easier to obtain finer powders
    • Full self-grinding of the material, ensuring product purity and wear resistance of the mill
    • High speed and low dynamic viscosity increase grinding efficiency and classification accuracy while reducing over-grinding
    • Good particle shape with high activity
    • Classifier wheel automatically separates materials through airflow, preventing coarse particles from discharge
    • Key components such as lining, classifier and nozzle are made from ceramic materials (e.g. Alumina, zirconia, or silicon carbide) for zero contact with metal during the whole grinding process
    • The classifier rotor can be installed horizontally or vertically; more rotors available
    • Rotor speed adjustable by frequency conversion allowing flexible particle size distribution adjustment
    • Closed loop system, reducing dust and noise and creating a clean production environment
    • PLC control system, easy to operate
    • Can be used for superfine processing of high-viscosity products
    • Motor connection via belt improves rotating speed
    • Multi-stage classifier optional, allows the production of multiple particle sizes at one time
    • Precise weighing control system available. ensuring product stability and consistency
    • Explosion-proof design or nitrogen circulation upgrades optional, to meet ultra-fine grinding requirements for flammable, explosive or easily oxidized materials
    Technical Parameters
    Parameter (S-MQL/W)
    2000
    3000
    4000
    6000
    10000
    15000
    20000
    Steam consumption (kg/h) 1000~2000 1500~3000 2000~4000 3000~6000 6000~10000 10000~15000 15000~20000
    Steam pressure (bar) 5~40 5~40 5~40 5~40 5~40 5~40 5~40
    Temperature (℃) 260~360 260~360 260~360 260~360 260~360 260~360 260~360
    Production capacity (kg/h) 400~1000 600~1500 800~2000 1200~3000 2000~5000 3000~8000 4000~10000
    Product size (D50:μm) 2~10 2~12 2~12 2~14 2~14 2~16 2~16

    Note: The particle size, specific gravity, hardness, and moisture of raw materials are all closely associated to the production capacity. These parameters should only be used as a reference; for more detailed information please consult our engineers.
    ALPA is a highly respected name in particle and powder processing, transforming the way the industry views traditional powder processing. Our research and development initiatives have focused on dry grinding, classification and separation, powder shape control and surface modification of particles and powders over the past two decades. As a result, we are proficient in providing tailored, CE-certified products, such as air jet mills, mechanical mills, air classifiers, ball mill with classifier, surface modification lines and more.
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      2. Classifying & Separating Classification and separation involve the sorting of particles according to their size. This is done by subjecting them to centrifugal force, gravity, inertial force and other forces in a medium such as air.
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      1. Dust Removal & Collection
      2. Dust Removal & CollectionThe powder, after being ground and classified, is collected by either a cyclone separator or a dust collector, or both if necessary. A filter bag, a filter cartridge, or a plastic burning plate type dust remover may be used.