Transcript PMT SYSTEMS - JETMILL SJ 50

PMT- Jetmill GmbH
New Developments in Filler
Micronization
Jürgen Roth, Veronika Mayer
Ultrafine Grinding ’06, Falmouth, UK
© PMT-Jetmill GmbH - Austria
12.-13. June 2006
UFG’06 June 2006
Outline
Requirements of the Filler Industry
Compound Reinforcement
Comparison of Grinding Technologies
Basics of Jetmilling
PMT Spiral Jet Mill
Some Application Results
Conclusions
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
Requirements of the Filler Industry
The Future
• Increasing Technical Demand from Compounders
• Change from 'Extender Fillers' to 'Functional Fillers'
• Importance of the Processing Stage to Enhance the
Functional Properties of Minerals
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
Requirements of the Filler Industry
Fillers are now High-Tech Products
Compounders are looking for a Solution,
not for a “Crushed Rock”
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
Requirements of the Filler Industry
The Target - Finest Products
• Finest Particle Sizes (d50)
• Exact Top Cut (d97)
• Improvement of the Functional Properties
• Lower Specific Energy Consumption
• Industrial Scale Size Output
• Guaranteed Operational Reliability
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
Compound Reinforcement


E c  E m  1  1  A  B  F  1  B  C  F 
2
Nielson Equation
• Ec …. Modulus Compound
• Em … Modulus Matrix
• A … Aspect Ratio
• B, C … Empirical Functions of Filler Modulus, Packing Fraction,
Filler Loading
• F ……. Filler Volume Fraction
Fillers with High Aspect Ratio Reinforce Better
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
Aspect Ratio (after W. Hohenberger)


1 
2 d 84 
   f  4
A   O s  d 50  exp  ln
2 
d 50 


• A .......... Aspect Ratio
• Os ......... Specific Surface
•rF ........... Filler Density
•d50, d84 ... PSD Values
B.E.T. [m2/g]
d50 [µm]
d84 [µm]
Aspect Ratio
Spiral Jetmill
16.7
6.9
15.3
80
Opposed Jetmill
14.1
6.3
13.7
63
Vertical Ball Mill
12.2
6.4
16.7
40
Table Roller Mill
11.8
5.5
14.5
32
Stirred Media Mill
10.4
6.1
18.5
23
Grinding Method
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
Aspect Ratio – Lamellarity
Particle Size Distribution
Vol um e
C umul . di str. undersi ze i n % (l i near di str. )
100
80
25. 05. 2005
PM T- Jet m i l l G m bH
A- 8700 Leoben
CI LAS 1064
MM
60
M at er i al
TALC D2- 7( 01/ 293) Cilas 106
TALC D2- 7( 01/ 293) Sedigr aph
40
20
0
0. 5
© PMT-Jetmill GmbH - Austria
1
2
5
10
20
50
100
200
Di amet er / µm
500
1000
UFG’06 June 2006
Comparison of Grinding Technologies
Opposed Jetmill
• Best operational area
Mohs 4 to 10
or
– cubic shape or
– metal powders
• Wearless and iron free
grinding
• Comminution by
particle - particle
collisions
© PMT-Jetmill GmbH - Austria
Spiral Jetmill
• Best operational area
Mohs 1 to 4
with
– laminar, layered or porous
structure
• Comminution by high velocity
differences
Impact - Jetmill
• Best operational area
Mohs 4 to 10
• Big wear of the target
plate
• Not an iron free
product
– high delamination effects
• Lower particle collisions
UFG’06 June 2006
Suitable Minerals
Soft to middle hard minerals
Lamellar or porous structure
•
•
•
•
Graphite
Barite
Mica
Talc
• Wollastonite
• Zeolite
• etc.
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
Spiral Jetmill Scheme
• Injector Feed
• Nozzles Around the
Circumference
• Spiral Stream Classifying
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
PMT Spiral Jetmill SJ
Concentration of the Grinding Energy
Higher Milling Chamber
Special Feed Control System
 Constant Loading
Coarse Product Outlet for Hard Grindable Materials
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
Advantages of PMT Jetmill System
1. Exact Top Cut (d97)
2. Coarse Product Outlet
3. Energy Consumption
4. Operational Reliability
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
1. Exact Top Cut
Particle Size Distribution after Sympatec Helos
Percent Passing
Cumulative
Durchgangs Mass
-%
100
90
80
70
60
50
40
30
20
10
0
1
10
Äquivalenter
Kugeldurchmesser
[µm]
Equivalent
Spherical
Diameter
[µm]
Legend:
d97[µm]
d50[µm]
rpm
kWh/t
Graphite Sample 1
8.4
3.38
9,700
2,060
Graphite Sample 2
12.9
5.16
6,700
1,190
Graphite Sample 3
20.9
8.12
3,700
485
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
1. Exact Top Cut
Particle Size Distribution after Sedigraph
Passing
Mass Percent
Cumulative
Durchgangs
-%
100
90
80
70
60
50
40
30
20
10
0
1
10
Equivalent
Diameter[µm]
[µm]
ÄquivalenterSpherical
Kugeldurchmesser
Legend:
© PMT-Jetmill GmbH - Austria
d97[µm]
d50[µm]
rpm
kWh/t
Barite Sample 1
2.65
0.88
7,200
1,260
Barite Sample 2
6.40
1.74
3,200
240
Barite Sample 3
12.10
2.54
1,500
85
UFG’06 June 2006
1. Exact Top Cut
Particle Size Distribution after Sedigraph
Percent Passing
Mass
Cumulative Dchgangs-%
Durchgangs-%
100
90
80
70
60
50
40
30
20
10
0
1
10
1
10
Äquivalenter
Kugeldurchmesser
[µm]
Äquivalenter
Kugeldurchmesser
[µm] [µm]
Equivalent
Spherical
Diameter
Legend:
d97[µm]
d50[µm]
rpm
kWh/t
Mica Sample 1
7.6
2.18
5,700
1,340
Mica Sample 2
11.2
3.00
4,200
810
Mica Sample 3
14.8
3.96
3,000
475
Mica Sample 4
23.1
6.22
2,200
290
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
1. Exact Top Cut
Particle Size Distribution after Sedigraph
100
Durchgangs
-%
Passing
Percent
Mass
Cumulative Durchgangs-%
90
80
70
60
50
40
30
20
10
0
1
10
Äquivalenter
Kugeldurchmesser
[µm]
Äquivalenter
Kugeldurchmesser
[µm]
Equivalent
Spherical
Diameter
[µm]
Legend:
d97[µm]
d50[µm]
rpm
kWh/t
Talc Sample 1
3.9
1.01
6,800
1,250
Talc Sample 2
5.7
1.75
4,000
540
Talc Sample 3
9.0
2.81
2,700
290
Talc Sample 4
15.8
4.58
1,700
145
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
2. Coarse Product Outlet
Final Product
1 ... Talc
2 ... Quartz
© PMT-Jetmill GmbH - Austria
3 ... Dolomite
4 ... Calzite
Reject Product
5 ... Chlorite
6 ... Muscovite
7 ... Feldspar
8 ... Montmorillonite
UFG’06 June 2006
3. Energy Consumption
10
Mean Diameter d50 [µm]
V27....Feed Blaine 4780cm²/g (Concentrate)
V28....Feed Blaine 14,300cm²/g (Pre Ground)
Jetmills - State of the art technology
V27
V28
1
100
1000
Spec. Energy Consumption [kWh/t]
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
4. Operational Reliability
Integrated Motor - Rotor - Unit
• Circumferential Speed up
to160 m/s
• Exact Top Cut
• Simple Disk Assembly
• Specially Developed Rotor
Shape
• Only One Bearing System
Maintenance Free and Operational Reliability
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
PMT Spiral- Jetmill SJ
THE LATEST GENERATION
• Up to 30% less Energy Consumption
• Increase of the Grinding Efficiency
due to the Closed Grinding- and
Classifying Circuit
• Easy Adjustment of Fineness by
Regulation of Rotor Speed
• Coarse Product Outlet
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
Application Results
40 % Talc in PPh
4000
3875
2
Modulus [N/mm]
3750
3625
PMT Jetmill SJ
3500
Stirred Media Mill
3375
Feed Material
3250
3125
Filler Consulting
3000
1
2
3
4
5 6 7 8 910
20
30
40 50
Top Cut [µm]
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
Application Results
2
E-Modulus [N/mm
]
40 % Mica in PPc
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
PMT Spiral Jetmill – Plant Layout
© PMT-Jetmill GmbH - Austria
UFG’06 June 2006
PMT – Jetmill GmbH
Vienna
Kammern
Graz
PMT – Jetmill GmbH
Industriepark 1
A-8773 Kammern, AUSTRIA
Tel: +43 3844 80350-0
Fax: +43 3844 80350-20
© PMT-Jetmill GmbH - Austria
http:\\www.powder-maker.com
[email protected]
UFG’06 June 2006