AIR CLASSIFIER

TURBO CLASSIFIER

It achieves classification of sub micron level
for the first time in the world.
Accurate and efficient classification,
meeting variety of requirements.

NISSHIN SEIFUN GROUPNISSHIN ENGINEERING INC.

Turbo Classifier achieves highly precise, highly efficient classification.
Excellent performance that achieved the sub micron level classificationof powder for the first time in the world.
Turbo Classifier realizes high-precision classification of particles, controlling characteristics of newmaterials including fine ceramic, polymer, complex material and electronics material, according to thepurpose of their use. The epoch-making classification system achieves the minimum classification
diameter of as small as 0.5 m, utilizing movement of particles, which realizes ultra fine diameter ofthe particles to be classified, minimal distribution range of the particle size, full control of top size or
bottom size of the particle diameter, high purification of the main ingredient and selected separationof the particle shape.
It will appeal the excellent functions in every industrial field including particle size adjustment requiredin the most advanced industry covering plastic, metal, ceramics and food.
Features of Turbo Classifier

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TURBO CLASSIFIERClassification System Flow Sheet
Powder and air
Control signal
Motor
Bag filter
Actualair flowrate

CycloneFeeder

Orifice

Motor
Turboclassifier

Coarse powder

Fine powder 1

Fine powder 2Automaticdamper

Actual rotor speed
Controller

InverterBlowerAlways aiming at advanced system.
Our original precision performance classification system wasmade based on the development thought prioritizing theeasiness of use, answering the needs of users.

Stainless classification rotor

Urethane lining classification rotor(anti-abrasion, anti-adhesion)

WC coated classification rotor(anti-abrasion)

Resin classification rotor(anti-adhesion, anti-metal contamination)

Turbo Classifier is the product which wasoriginally developed by Nisshin Flour Milling Co., Ltd. for its own powder processing job and had been so used for over 20years. Then it was marketed based on theactual results of use. Therefore, unlike
other products manufactured by machinemakers, it has a lot of epoch-making classification functions which reflect the requirements of users to its functions andstructure to be used.

Structure and mechanism ofTurbo Classifier
The powder fed through the raw material inlet becomes airborne in the unit, being evenly distributed by the dispersion blade anddispersion disc, and is sent to the classification zone. There, each particle of the powder
receives centrifugal force caused by the revolution stream and dragging force caused by
the air flow in the radius direction, wherethe coarse particles are affected by the centrifugal force and the fine particles are affected by the dragging force and each of them is

moved on different orbits and so classified.
The coarse particles are blown out of theclassification rotor by the centrifugal force
and taken out of the coarse powder outlet
with the state that is air-sealed. Meanwhile,the fine powder is carried into the rotor together with an air flow, then carried by theair flow rectified by the auxiliary blade
through the classification rotor, the balancerotor and the scroll casing, then collected by
the cyclone and bag filter.

Air flow Structural cross section
Auxiliary blade
Classification blade

Raw material
Balance rotor
Powder inlet

Classification rotor

Centrifugalforce

Dispersion blade

CoarsepowderoutletDispersion disc

Dragging force

CoarsepowderFine powder

Movement direction of particles

Adjustment of classification point
for Turbo Classifier
Scroll casing

Air flow

To adjust the classification point of TurboClassifier, revolution speed of the classification rotor and flow rate of the passing air areadjusted. Since the variable range of the air
flow is limited, it is usually maintained atcertain level to be used for fine adjustment.
Therefore, the number of revolution of theclassification rotor is mainly used for the adjustment.

TURBO CLASSIFIER

Features of Turbo Classifier

Double dispersion mechanism thatachieves highly precise classification
The important thing to enhance the accuracyof particle classification is to make the particles close to a single particle state whensending the powder into the classification
zone. In this sense, Turbo Classifier can achieve the highly precise classification as follows. The primary dispersion mechanism ofTurbo Classifier almost evenly disperses thepowder which is inhaled together with air tothe direction of the circumference, by meansof the radial dispersion blades and grooves.
Then, the secondary dispersion mechanism
promotes the disintegration when the powder passes through a narrow gap between
the flat dispersion disc which is revolving athigh speed and the fixed casing, thus dispersing the powder into a single type of particles.

Fast coarse powder collection
and fine powder re-collection
mechanisms that substantiallyenhance processing capacity
Turbo Classifier has excellent fast performance to collect powder processed. Its
mechanism quickly collects the coarse powder through the coarse powder outlet which
is directly connected to the outer circumference, and the re-collection mechanism recollects the fine powder which is mixed ineven air flow. It is also equipped with a balance rotor to prevent the uneven stream in
the radius direction and the local spiral flowcaused by inhalation of the external blower,
which also prevents the pressure loss by theclassifier main body.

cutes feed-back control. In case of a full automatic laboratory machine, optimal classification conditions are selected and fullautomatic operation is provided by only inputting the classification point, true densityand feed rate through the operation panel.

Revolution control method ofclassification rotor to provide
easy operation

Special specifications, expanding
usage of classifier

The classification point of the Turbo Classifier can easily be set by adjusting revolution
speed of the classification rotor and air flow
rate. Especially, setting of the classification
point by only adjusting the revolution speed
under the state of a constant air flow rate
can momentarily provide easy operation for
the various specifications of various particle
sizes.

Compact design, improving work
performance wherever it is installed
The technology which Nisshin Engineering
is proud of successfully made the size of theclassifier smaller without impairing the accuracy and functionality of Turbo Classifier.
Since its height was made shorter, a freespace was made above the powder inlet,
which enables the unit to be installed at aplace with limited space and smooth feeding
to the unit.

 Anti-abration special specifications,anti-adhesion special specification
To classify the powder with intensive abrasive characteristics, special specifications
which applied ceramics or ultra hard material to the area susceptible to the wear is readily available. Or special specifications whichused urethane rubber or plastic to prevent
adhesion is also available.
 Option for powder with strong cohesion and adhesion characteristics
To treat the powder characterized by strong
cohesion or adhesion, the dispersion nozzle
to promote dispersion of the powder and thescraper to rub off the adhesive powder wereadded to the line-up.
Scraper
Dispersion nozzle

Classifier-specific control system,
providing full automatic operation
Turbo Classifier has employed specific controllers for its full series to maintain the classification point at a constant level under various conditions. That is - it always
compares the setting values for the air flowrate and number of revolution, which are thevariation factors of the classification point,with the actual measurement values and exe-Coarse powder Classification under special circumstance

To classify the powder which intensely oxidizes, a classification system that can control
oxygen content is available, which can execute highly accurate classification in the inert gas such as nitrogen.

Fine powder

the coarse powder, by means of the air
stream accelerated by the auxiliary blade ofclassification rotor and channel air. By thesemechanism, its processing capacity is greatlyenhanced under highly precise classification.

Air rectifying mechanism based onturbo theory to enhance accuracy
and efficiency of classification
To enhance accuracy of the classification, it
is necessary to keep the air stream in theclassification zone even. Using the turbo fan
theory, Turbo Classifier determines the optimal shape and dimensions for the classification rotor and classification blade to have an

Turbo Classifier at use in a plant

High accuracy, sub micron classification
can meet the needs of users.
Examples of classification
 Metal powder (copper powder)Histogram (%)

Cumulative Under size percentage (%)

Histogram (%)

Histogram (%)

Cumulative Under size percentage (%)

Cumulative Under size percentage (%)

10100201003510088016802880

66012602160

440840144022042072000.1

110Raw Material

10001000

00.1

Particle size

11010001000

00.1

Particle size

11010001000

Particle size

Coarse powder after classification

Fine powder after classification(product) Battery raw material (metal oxide)
Histogram (%)

Cumulative Under size percentage (%)

Histogram (%)

Histogram (%)

Cumulative Under size percentage (%)

Cumulative Under size percentage (%)

25100

2510025100208020802080156015601560

10401040104052052052000.1

110Raw Material

100Particle size

01000

00.1

110100Particle size

01000

00.1

Coarse powder after classification

110100Particle size

01000

Fine powder after classification

 Mineral (Bakuhanseki:healstone)
Histogram (%)

Cumulative Under size percentage (%)

Histogram (%)

Cumulative Under size percentage (%)

Histogram (%)

Cumulative Under size percentage (%)

10100

10100

15100

880

880

1280

660

660

960

440440640

22022032000.1

110Raw Material

100Particle size

01000

00.1

1100Particle size

01000

Coarse powder after classification

 Electronic material (solder powder)

Raw material

10Product(after removing coarse powder)00.1

110100Particle size

01000

Fine powder after classification(product) Chemical (color toner)

Raw material

Product(after removing fine powder)

TURBO CLASSIFIER Powder material and particle size
MaterialCaCO3

MineralTalc
micaLime stone
Silicon sand

Lump ore

CementCuMo

MetalFeCoAg
SolderNi
Si3N4

Ceramic

Fe2O3
Fused Alumina

Al2O3
TiO2
ZnO
SiO2SiC
Glass fiber

Magnesia

Pigment

Plastic

Vinyl chloride
Toner
Polytetrafluoro ethylene
Epoxy
NBR

Polyethylene
TeflonStarchSoybean

Food

Fish powder
Skim milk
Wheat flour
Salt
Sugar

Particle size

Consignment Processing Sirvice, developing based on our affluent experience,advanced technology and state-of-the-art facility

Nisshin Engineering undertakes on the consignment basis, the pulverization, classification and characteristics measurement of the material powder according
to the requirements of customers, based on our achievements of processing and measurement of powder over the period. You can make the use of it for yourproduction, research and development of powder products.

Contents of Consignment
 Pulverization

Pulverization method

O v e r v i ew

Fluid energy
methodPowder particles are engulfed in the jet and pulverized
by the collision of particles with each other.

Current jet.

RollermethodShearing force is applied to the powder engulfed
between the roller and the table to pulverize it.

Super hybrid mill.

High speed
methodFa c i l i t y

By passing the powder through the high-speed spiral Super rotor.
stream generated by the rotor with unique structure,
Blade mill.
fine pulverization of the powder is executed.
Impact, shearing and friction are applied to the powder Pin mill.
residing between the pin attached to the fast revolving disc
Disc mill.
and the pin attached to the opposite side to pulverize it.

 Classification

Classification method

O v e r v i ew

Air classification The turbo classifier developed by us executes the classification ofthe size from sub micron to hundreds microns, which correspond tomethod
sieving method Classification up to around a hundred microns.
 Characteristics measurement

Item to measureO v e r v i ew

Particle size

Laser diffraction method (Microtrac dry/wet type), sedimentation method (white lighttransmission method, X-ray transmission method), electric detection method (coultercounter), sieving method, microscope method and specific surface area method

Powder characteristics Powder tester, true density, shearing force.
Component analysis Moisture measurement, ash, protein.
Photographing Scanning electron microscope, optical microscopeLine UpHigh precision models can cope with various processing amounts.
Material of the powder contact area can be changed according
to the powder to process.
Classification under a special environment is also possible.

TC-100Â

Large capacity type with twice processing capacity having the same rotor diameter as TC-100Ⅱ type.

2900

1600

1910

2410

TC-100À

1660

Large type model for process use, with high capacity provided to correspond to a large scale plant.

350

1200

800

830

590

731
1481

2350

1200

450

TURBO CLASSIFIER

Cut point（μm）

Items
ModelsFine typeTC-100Â

Coarse type

Feed rate（kg/h）

Rotor speed（min-1）

Airflow rate（ã/min）Power consumption（kW）

Weight（kg)2〜50

5〜120〜8,000

200〜2,000

150〜300

45〜75

5,000

TC-1002〜50

5〜120〜4,000

300〜2,500

70〜120

22〜37

1,500

TC-60

1.5〜505〜120〜1,000

300〜5,000

30〜1007.5〜75

1,000

TC-40

1〜50

3〜120〜200

300〜6,500

15〜35

3.7〜15700

TC-25※

0.6〜302〜100〜50

500〜7,000

3〜9TC-15※

0.5〜202〜100〜5700〜11,000

1〜3

2.2
12.5
1.5
3.4

There are [Ⅱ type: ordinary specification type], [Ⅲ type: jet mill,vertical mill corresponding type]
and [Ⅳ type: large capacity type(with potential processing capacity twice as much as Ⅱ type)] as
the models larger than TC-40.
※●As TC-15, there are automatic operation NS typeand manual operation MS
type, which are systemequipment, as well as
NSC, MSC types which arecoupled with the jet mill.
●As TC-25, there are automatic operation N typeand manual operation M
type. Also there is Ⅲ typewhich has processing capacity one and a halftimes as much as Ⅱ type.

750400＊ The specifications may be changed without notice.

TC- 60À

A standard model for process use, showing superb reliability with its stable classification accuracy.

1550

432.5

590

533
1033

1520

TC- 40À

1220

A high precision model for process use, covering from high functional electronic material to fine chemical.

900

350

540

260
432

412.5
520

970

1100

900

Line UpTC-25N

A full automatic type with high accuracy for laboratory use, can be used for process use as well. Equipped with a load cell.
Inputting true density of powder and a classification cut point calculates optimal conditions. Coupling with the jet mill is also possible.

TC-25MA manual operation type with high accuracy for laboratory use,
can be used for process use as well. Coupling with the jet mill is also possible.

1691
1205

352

500

1250

500

720
726

950
840

TC-15NS726

A full automatic, highly accurate classifier for laboratory use. Improved operability by means of the touch panel. Equipped with a load cell.
Inputting true density of powder and a classification cut point calculates optimal conditions. NSC type to be coupled with the jet mill is also available.

TC-15MSA manual operation type with high accuracy for laboratory use. Improved operability
by means of the touch panel. MSC type to be coupled with the jet mill is also available.

350750

1457

1232

1232
912

750

TURBO CLASSIFIERA P P L I C A T I O N

TC-25 Inert gas cycling system

S Y S T E M

A closed type that realizes highly accurate classification under the atmosphere (with oxygen content
under 100ppm) of nitrogen or inert gas. A model corresponding to TC-15 • 40 • 60 type is also available.

Pulverization-classification closed circuit system
A pulverization-classification system coupling the laboratory use classifier
TC-15 with the laboratory use jet mill Current Jet CJ-10.

A highly efficient pulverization-classification system, coupling the laboratory
use classifier TC-15 with the laboratory use mechanical pulverizer SR-15.

NISSHIN SEIFUN GROUPNISSHIN ENGINEERING INC.
Headquarters

14-1 Koami-Cho, Nihonbashi, Chuo-Ku, Tokyo, 103-8544

Powder processing center

5-3-1 Tsurugaoka, Oi-Machi, Iruma-Gun, Saitama Prefecture, 356-8511,
Within Nisshin Seifun Group Inc. Research Center for Production & Technology

TEL. +81-3-3660-3680 FAX. +81-3-3660-3085

TEL. +81-49-264-3322 FAX. +81-49-264-3320