Jet Mills (Fluid Energy Mills)
Jet Mills (Fluid Energy Mills)
The NSIE Jet Mill is our response to meeting
industry demands for constant improvement in processing technology.
Utilizing a unique fluid energy grinding system to generate particle on
particle impact, the Micronizer grinds and classifies powders to micron and
sub-micron size in single operation, in a single grinding chamber.
Jet Mills (Fluid Energy Mills) are used to micronize pharmaceuticals,
chemical, pigments, minerals, agrochemicals, thermoplastics and other heat
sensitive and abrasive materials.
Jet Mills operate in compressed air, gas, nitrogen
or high pressure superheated steam. These mills have no moving parts and
thereby eliminating contamination due to contact with external grinding
media. Also on attritional heat is generated during grinding process hence
suitable for heat sensitive, waxy substances and low melting point materials
are easily micronized.
Jet Mill works on fluid energy. Micronizing and classification are to be
done in Jet Mill by taking advantage of fluid energy. Mill is designed to
inject high pressure air or steam in to shallow cylindrical chamber through
specially designed nozzles. Nozzles are placed at equally spaced on wall
peripheral to have each jet is tangential at imaginary smaller
circumference. Venture system will control the feed rate of the material
precisely to get productivity. Jets generate high velocity vortex during
material feeding which create vacuum to suck product in to high speed
particle of the material are collided with each
other and reduce themselves by attrition as well as collision whenever it
comes in strong velocity gradients near the jet. The micronization takes
place due to the collision between the incoming particles and the particles,
which are accelerated into the spiral path. The larger particles of the
product get retained at the periphery of the chamber by centrifugal force
and micronized particles exit with the exhaust air from the central port of
the chamber and get collected in to the cyclone collector system. Heavier or
oversize particles are stay in chamber until micronized due to centrifugal
force. The material can, be miller to an average particle size 0.2 to 5
micron or coarse ground to 400 mesh depending upon characteristics of the
product. In general, input feed size of 200 mesh with air pressure of 7
kg/cm2, adequate quantity of air and controlled feed give better results.
Unique design to micronize wide range of dry solids
material very economically and efficiently. Particle collide each other
without any moving parts, which results absolute productivity and negligible
maintenance. Provided with interchangeable liners. Designed for easy
dismantle and quick reassemble for cleaning and for material change. Compact
design requires less floor space.
Micron size particles improve product quality to
great extent as compared to mesh particle in terms of efficiency,
dispersions, behavior and intimate blends of different material. It is due
to increase in number of particles and surface area. It also increases
suspensibility, dispersion rate, surface area of particle and bulk density.
Simple modular design allowing easy access to
internal parts that are mechanically polished to 320-360 grit finish. The
main milling chamber is mounted on stand with all the process pressure
regulators, gauges and controls valves to monitor pressure across the
filters are mounted in the front panel of the chamber so as to have ease of
user friendly operations. The Jet Mill disassembles easily for perfect
cleaning of components and fast changeover, without risk of cross
The mills are supplied with a wide range of auxiliary equipment for
feeding, conveying, classification to product collection.
- Stainless Steel
- UHMWPE (Ultra-High Molecular Weight Polyethylene)
- Polyurethane or Vulcanized Rubber
- Alloy Steel
- Aluminum Oxide
- Silicon Carbide
- Tungsten Carbide
THE PARTICLE SEPARATOR
The particle distribution is controlled by
adjusting pressure and feed rate. The particles are trapped by specially
designed cyclone separator and dust collector.
The particle size distribution is controlled by adjusting pressure and feed
rate. The particles are trapped by specially designed cyclonic separator and
finger-bag made of non-woven PTFE coated cloth without risk of fibre
The micronizing of the powder improves absorption
capacity of the drugs in the human body. This also results in new and
unusual chemical and physical properties relating to suspendability,
solid-state reaction rate, texture, colour, absorption etc.
The surface area achieves increase in potency of drugs, which reduces the
dosage of the drugs. Product of 30 mesh size when jet milled to 5 micron,
has more than 160,000 particles & surface area increases more than 115
times. This results into faster reaction time for chemicals, faster ignition
time in the case of solid fuels of rockets. The Jet Milled pesticides &
herbicides cover much more surface area using less of the active
ingredients, thus reducing the cost. The polishing powders used for
polishing the lenses, computer hard disc or in toothpaste are required to be
a narrow particle size distribution for maximum productivity. The abrasives
used in these polishing powders are very precisely milled.
Any cosmetic product requiring silky smoothness in application can be
achieved in Jet Mill. The reflectivity of light occurs when the particle
size of the pigment approaches a precise relationship to the wavelength of
visible light. Therefore by controlling the particle size, the product
quality & its brilliance can be ascertained.
Jet Mill versions are sanitary, Indian FDA and US-FDA accepted designs, in
line with GMP practices and in accordance with all pharmaceutical
specifications worldwide. The Jet Mills manufactured by us have replaceable
internal rings with optimized grinding angles for various products. The
design & construction of Jet Mills are the result of many years of
dependable, uninterrupted service.
- Simple, straightforward design with no moving parts.
- Efficient, effective one-step grinding and classifying operation.
- Engineered for easy access.
- No heat from grinding
- No media contamination
- No lubrication contamination
- Variety of available liners to prevent contamination and resist
The Jet Mills are widely used in drugs and
pharmaceuticals, organic and inorganic pigments, optical brightness,
fluorescent pigments, food colour, synthetic dyes, metal (except malleable
metals) carbides & borides, tobacco, herbicides and pesticides, ceramic,
glass, alumina, feldspar, frit, kaolin, mullite, electronic grade materials
such as materials required for semiconductors, phosphors, photo electronic,
high temperature critical materials rocket fuels etc.
Processes materials susceptible to oxidation or
explosivity easily adapts to inert gas and super-heated steam operations.
||SOME OF THE MATERIALS
||BHC, DDT, Deltamethrine,
Carbendezim, Carbaryl, Germicide, Herbicide, Fungicide, Sulphur, etc.
||Adipic acid, Barium titanate,
Calcium chloride, Chrome oxide, Catalysist, TCC, etc.
||Aluminum hydrates, Silicon carbide
, Ferrites, Glass, Zirconium oxide, etc.
||Molybdenum disulphide, Noble metal,
||Gypsum, Graphite, Mica, Talc,
Tentalum ore, etc.
||Carbon black, Fluorescent pigments,
Printing ink, etc.
||Albendazole, Antibiotics, Asprin,
Cosmetics, Bulk drugs, Dichlofenac sodium. Glybeneclamade, Furosemide,
Omeprezole, Osfendazole, etc.
||ABS resins, PVC stablizers,
Phenolic, PTEF, etc.
||Asbestos, Chocolate, Food Colours,
Fuller earth, Precipitated silica, Silverflake, Toner, Wax, Wolframite
Technical Data :
||Air Compressor KW rating at Pr.
||Air (M3/Hr) FAD
||Capacity Kg/Hr (Approx.)
||Approximate space required for
mill at bagging ht. = 1000mm L x B x H (mm)
||NJM - 200
||3000 x 1000 x 2000
||4000 x 2000 x 4000
||NJM - 300
||4500 x 2000 x 4000
||NJM - 400
||5000 x 2000 x 4000
||NJM - 450
||5000 x 2000 x 5000
||NJM - 500
||5000 x 2000 x 5000
||NJM - 600
||5000 x 3000 x 6000
||NJM - 750
||6000 x 3000 x 7500
- Production capacity, fineness and KW of motor are nominal only and
vary from case to case depending upon the several factors.
- Specifications and design are subjected to change without notice.
- Different design can be offered for different applications
- Average feed size of materials is 200 mesh with operating pressure in
between 7 - 8 kg/cm2, but results widely depend on the