I MOLOMAX Commuter Mills they are used for grinding raw materials of various nature, specific weight and humidity up to medium hardnesses (clays, calcium carbonate, bentonite, gypsum, dolomite, etc.) with very high productions and exceptional quantities of fine material.
Thanks to the dual feed system and the presence of suitable internal ploughshare distributors, loading into the grinding chamber is optimized with a clearly higher yield than similar mills.
The grinding is carried out by the large pendulums which, during the rolling action under the action of the centrifugal force, exert a strong pressure on the track housed at the base of the mill.
After the grinding phase, the material is transported to the upper part of the mill via an air flow created by the fan or via the suction of a filter installed downstream. The material is also classified through a separator incorporated in the upper part of the mill and configured on the basis of the particle size to be obtained.
Active power management is combined with parameters detected in real time by various sensors in the process, automatically guaranteeing maximum yield over time.
INSTALLATION OF THE MS-CYCLONE CLOSED-CYCLE PENDULAR MILL
in MOLOMAX Pendulum Mills type MS-CYCLONE, the solid-air separation process takes place in the abatement collector cyclone. This is placed between the pendular mill and the fan connected by a series of pipes. This system is called "closed cycle".
This process is used in particular conditions such as for example the treatment of explosive materials, with electrostatic charge or with the need to separate inert substances.
In the presence of raw materials with a high percentage of humidity, this system can be integrated with a suitable burner.
MS-AIR OPEN-CYCLE PENDULAR MILL INSTALLATION
in MOLOMAX Pendulum Mills type MS-AIR the ground material is classified and collected by a process filter, which will discharge them in the next phase of the plant cycle. This type of plant is also called "open cycle".
This technique makes it possible to further optimize the performance of the machine by increasing its final production values, especially in the presence of previously pre-treated fine particles. Also in MS-AIR type pendular mills it is possible to insert hot gases in a "vein" of air with extraordinary thermal efficiency results.
MOLOMAX PENDULAR MILLS - GRANULOMETRIC SELECTION
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| Adjustable bell separator Fineness from 200 to 500 microns Selection accuracy 94% Adjustment by micrometric screw |
Centrifugal Separator with Fins Fineness from 40 to 250 microns Selection accuracy 100% Regulation by frequency converter |
Cell Centrifugal Separator Fineness from 20 to 40 microns Selection accuracy 100% Regulation by frequency converter |
CHARACTERISTIC GRANULOMETRIC CURVE
| Mixture of raw materials for the production of PIG + Molomax roof tiles |
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| Mixture of ceramic raw materials for the production of red body tiles |
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| Mixture of ceramic raw materials for the production of porcelain stoneware |
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| Calcium carbonate grinding |
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Barite grinding |
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| Coal Grinding |
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MOLOMAX PENDULAR MILLS- FLOW CHART
MOLOMAX PENDULAR MILLS – TECHNICAL DATA
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Model
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A
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B
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C
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D
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N.Rollers
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Ø Grinding track.
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Cons. (kCal/lt)
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Installed power (kW)
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|||
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mill
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Filter
|
Separator
|
supply
|
||||||||
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3/90 |
1550
|
3120
|
1980
|
1690
|
3 |
900
|
650
|
37
|
37
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5,5
|
3
|
|
3/120
|
1850
|
3490
|
2110
|
2030
|
3
|
1200
|
45
|
55
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9
|
3
|
|
|
4/150
|
2430
|
4200
|
2190
|
2820
|
4
|
1500
|
132
|
132
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11
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3 + 3
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|
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4/150/RS
|
2430
|
4200
|
2190
|
2820
|
4 Maxi |
1500 |
160
|
132
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11
|
3 + 3 |
|
|
6/190
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2830
|
4300
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2300
|
3700
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6
|
1900
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160
|
160
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11
|
3 + 3
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|
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6/190/RS
|
2830
|
4300
|
2300
|
3700
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6 Maxi
|
1900
|
200
|
160
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11
|
3 + 3
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|
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4/230
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2950
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5200
|
2800
|
4000
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4
|
1900
|
250
|
315
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11
|
3 + 3
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|
|
5/230
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2950
|
5200
|
2800
|
4000
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5
|
1900
|
315
|
315
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11
|
3 + 3
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|
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6/230 |
2950
|
5200
|
2800
|
4000
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6
|
1900
|
315
|
315
|
11
|
3 + 3
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|
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6/500
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3350
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6500
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3200
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4500
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6
|
2500
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400
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450
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18,5
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4 + 4
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Upon request, we can also build larger Molomax pendular mills with track diameter up to 6000mm.
PRODUCTIONS
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Clay + Feldspar
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| Model | Max. size feed (mm) | Maximum incoming humidity | Outgoing material fineness (microns) | ton / h |
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3/90 |
30 | 20% | <200 | 1 – 4 |
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3/120
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5 – 9 | |||
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4/150
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12 – 31 | |||
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4/150/RS
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14 – 35 | |||
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6/190
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18 – 40 | |||
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6/190/RS
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20 – 45 | |||
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4/230
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23 – 50 | |||
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5/230
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26 – 56 | |||
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6/230 |
29 – 62 | |||
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6/500
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40 – 70 | |||
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Limestone - Magnesite - Coal
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| Model | Max. size feed (mm) | Maximum incoming humidity | Outgoing material fineness (microns) | ton / h |
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3/90 |
30 | 20% | <90 | 0,5 – 2 |
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3/120
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2,5 – 4 | |||
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4/150
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5 – 11 | |||
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4/150/RS
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6 – 12,5 | |||
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6/190
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8 – 16 | |||
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6/190/RS
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9 – 17,5 | |||
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4/230
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11-19 | |||
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5/230
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12,5 – 22 | |||
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6/230 |
13 – 24 | |||
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6/500
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18 – 30 | |||
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Plaster – Talc
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| Model | Max. size feed (mm) | Maximum incoming humidity | Outgoing material fineness (microns) | ton / h |
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3/90 |
30 | 20% | <45 | 0,3 – 0,9 |
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3/120
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0,6 – 1,2 | |||
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4/150
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2,5 – 5,0 | |||
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4/150/RS
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3 – 6 | |||
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6/190
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3,5 – 7,5 | |||
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6/190/RS
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3,8 – 8,5 | |||
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4/230
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4,2 – 10 | |||
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5/230
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5,0 – 11,5 | |||
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6/230 |
5,5 – 12,5 | |||
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6/500
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7,0 – 15 | |||
MOLOMAX PENDULAR MILLS – ANALYSIS OF OPERATING COSTS
The following comparison is based on a complete Manfredini e Schianchi material preparation plant with a MOLOMAX pendular mill and a non-M&S process with a rotary track type mill having the same production rate of 30 tons/h for the same single-fired ceramic composition.
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ELECTRICITY CONSUMPTION COMPARISON
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MOLOMAX
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Rotating track mill
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Pregrinding
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132 kW (*)
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55 kW
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Main Engine
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250 kW
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315 kW
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Engine Separator
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11 kW
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22 kW
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Process Filter Engine
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315 kW
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250 kW
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wetting machine
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2 x 18,5 kW
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132 kW + 11 kW
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Department filter fan
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Unnecessary (**)
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55 kW
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Total
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Total power
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745 kW
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840 kW
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Power consumed
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475 kW (***)
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672 kW
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Consumption for production
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15,8 kW/ton
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22,40 kW/ton
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(*) Pre-grinding with PIG hammer mill
(**) The process filter also performs this function
(***) Inverter technology
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COMPARISON OF THERMAL CONSUMPTION
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MOLOMAX
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Rotating track mill
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Thermal consumption
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650 kCal/lt
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850 kCal/lt
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Ceramic blend with 6% humidity
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| Maximum humidity allowed for optimal operation | 3,5% | 1% |
| Burner installed | 750.000 kcal | 2.000.000 kcal |
| Maximum consumption | 2 Nm3/h/t | 5,2 Nm3/h/t |
| Material temperature at filter outlet | 24°C Max | 70°C |
| Ceramic blend with 12% humidity | ||
| Maximum humidity allowed for optimal operation | 3,5% | * |
| Burner installed | 1.500.000 kcal | * |
| Maximum consumption | 6,7 Nm3/h/t | * |
| Material temperature at filter outlet | 30°C Max | * |
(*) With humidity higher than 6% the rotary track mill is not able to grind the dough
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TECHNICAL COMPARISON AND ON MAINTENANCE COSTS
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MOLOMAX
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Rotating track mill
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Maximum input size beyond which a further pre-grinding is required
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200 mm
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100 mm
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Post-grinding equipment insulation
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not necessary
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necessary
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Average cost of spare parts
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0,8 – 1,2 €/ton
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1,2 – 1,5 €/ton
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Machine downtime for maintenance
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8:XNUMX
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48:XNUMX
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Lifting equipment required
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3,5 ton forklift
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10 ton crane
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| COMPARISON ON THE FINAL PRODUCT | |
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MOLOMAX
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Rotating track mill
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