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MOLOMAX PENDULAR MILL

The MOLOMAX Pendular Mills are used to crush raw materials of various kinds, specific weight and humidity right up to average levels of hardness (clay, calcium carbonate, bentonite, chalk, dolomite etc.) with extremely high levels of production and exceptional quantities of fine material.

Thanks to the dual feeding system and the presence of specific internal plough-share distributors, loading in the crushing chamber is optimised with a level of performance that is much higher than similar kinds of mills.

Crushing is performed by large pendulum that, under the action of the centrifuge power, apply huge pressure to the track fitted in the base of the mill.

Once the material has been crushed it is transferred to the top of the mill by the air that is circulated by the fan or suction by a filter located at the bottom.
The material is also classified by the separator configured at the bottom of the crushing process to be created.

Active handling of the feeding is combined with parameters identified in real time by different process sensors, therefore automatically guaranteeing the highest level of performance in time.

In case of very abrasive raw materials required for porcelain stoneware or once fired low water absorption tiles ,the Molomax oendualr mills are duly inner coated with Alubit.

MOLOMAX PENDULAR MILL -CYCLONE INSTALLATION

In the MS-CYCLONE pendular type of mills, the solid-air separation process occurs in the cycle reduction collector. This is placed between the pendular mill and the fan, connected by a whole range of tubes: this system is also known as closed cycle.

This process is used in special conditions: for example in the presence of explosive materials or materials with an electrostatic charge. In the case of the presence of raw materials with a high percentage of humidity, this system may be integrated with a warm air generator.

MOLOMAX PENDULAR MILL - AIR INSTALLATION

In the MS-AIR type pendulars, the crushed material is extracted and collected by a process filter, that subsequently downloads it to the following stage of the engineering cycle.
This kind of plant is also known as open cycle.

This technique allows for further optimisation of performance of the machine by increasing the final values of production, especially in the presence of fine particles previously pre-treated. In MS-AIR pendular type mills it is also possible to insert hot gases into air veins with excellent results in terms of heat yield.

MOLOMAX PENDULAR MILL - GRAIN SIZE SELECTION

Adjustable bell shaped classifier Ranging from 200 to 500 microns Selection accuracy: 94% Regulated using micrometric screw	Centrifugal classifier with fins Ranging from 40 to 250 microns Selection accuracy: 100% Regulated using frequency adjusters	Classifier of the cell type Ranging from 20 to 40 microns Selection accuracy: 100% Regulated using frequency adjusters

MOLOMAX PENDULAR MILL - TYPICAL GRAIN SIZE CURVE

Mixture of raw materials for the production of roof tiles P.I.G. + Molomax

Mixture of ceramic raw materials for the production of red body tiles

Mixture of ceramic raw materials for the production of porcelain stoneware

Calcium carbonate grinding

Barite grinding

Coal grinding

MOLOMAX PENDULAR MILL INSTALLATION - FLOW CHART

MOLOMAX PENDULAR MILL - TECHNICAL DATA

Model	A	B	C	D	N. Rollers	Ø Grinding Ring	Cons. (kCal/lt)	Rated Power (kW)
								Mill	Filter	Class.	Feed.
3/90	1550	3120	1980	1690	3	900	650	37	37	5,5	3
3/120	1850	3490	2110	2030	3	1200		45	55	9	3
4/150	2430	4200	2190	2820	4	1500		132	132	11	3+3
4/150/RS	2430	4200	2190	2820	4 Maxi	1500		160	132	11	3+3
6/190	2830	4300	2300	3700	6	1900		160	160	11	3+3
6/190/RS	2830	4300	2300	3700	6 Maxi	1900		200	160	11	3+3
4/230	2950	5200	2800	4000	4	1900		250	315	11	3+3
5/230	2950	5200	2800	4000	5	1900		315	315	11	3+3
6/230	2950	5200	2800	4000	6	1900		315	315	11	3+3
6/500	3350	6500	3200	4500	6	2500		400	450	18,5	4+4

Upon request, we can build MoloMax Pendular Mills with larger dimensions up to 6000 mm in the track diameter.

PRODUCTIONS

Clay + Feldspar
Model	Max incoming piece size (mm)	Max moisture content at entrance	Max fineness at exit (microns)	ton/h
3/90	30	20%	< 200	1 - 4
3/120				5 - 9
4/150				12 - 31
4/150/RS				14 - 35
6/190				18 - 40
6/190/RS				20 - 45
4/230				23 - 50
5/230				26 - 56
6/230				29 - 62
6/500				40 - 70

Limestone Magnesite Coal
Model	Max incoming piece size (mm)	Max moisture content at entrance	Max fineness at exit (microns)	ton/h
3/90	30	20%	< 90	0,5 - 2
3/120				2,5 - 4
4/150				5 - 11
4/150/RS				6 - 12,5
6/190				8 - 16
6/190/RS				9 - 17,5
4/230				11 -19
5/230				12,5 - 22
6/230				13 - 24
6/500				18 - 30

Gypsum Talc
Model	Max incoming piece size (mm)	Max moisture content at entrance	Max fineness at exit (microns)	ton/h
3/90	30	20%	< 45	0,3 - 0,9
3/120				0,6 - 1,2
4/150				2,5 - 5,0
4/150/RS				3 - 6
6/190				3,5 - 7,5
6/190/RS				3,8 - 8,5
4/230				4,2 - 10
5/230				5,0 - 11,5
6/230				5,5 - 12,5
6/500				7,0 - 15

MOLOMAX PENDULAR MILLS – ANALYSIS OF RUNNING COSTS

The following example is based on a Manfredini & Schianchi complete raw materials preparation plant with a MOLOMOX pendular mill and a non M&S process with a rotating track mill which has the same throughput of 30 T/h for the same single fired ceramic composition.

ELECTRICAL CONSUMPTION COMPARISON
	MOLOMAX	Rotating track mill
Pregrinding	132 kW (*)	55 kW
Main motor	250 kW	315 kW
Separator motor	11 kW	22 kW
Process filter motor	315 kW	250 kW
Wetting machine	2 x 18,5 kW	132 kW + 11 kW
Environmental filter fan	Not necessary (**)	55 kW
Total
Total power installed	745 kW	840 kW
Power consumed	475 kW (***)	672 kW
Production consumption	15,8 kW/ton	22,40 kW/ton

(*) Pregrinding with Hammer mills type P.I.G.
(**) The process filter also carries out this operation
(***) Technology with inverter

THERMAL CONSUMPTION COMPARISON
	MOLOMAX	Rotating track mill
Thermal consumption	500 kCal/lt	850 kCal/lt
Ceramic mixture with 6 % humidity
Maximum humidity permitted for optimal functioning	3,5%	1%
Burner installed	750.000 kCal	2.000.000 kCal
Maximum consumption	2 Nm3/h/t	5,2 Nm3/h/t
Temperature of material at filter exit	24°C Max	70°C
Ceramic mixture with 12 % humidity
Maximum humidity permitted for optimal functioning	3,5%	*
Burner installed	1.500.000 kCal	*
Maximum consumption	6,7 Nm3/h/t	*
Temperature of material at filter exit	30°C Max	*

(*) With a humidity higher than 6 % , the rotating track is not able to handle the composition.

TECHNICAL & MAINTENANCE COSTS COMPARISON
	MOLOMAX	Rotating track mill
Maximum feed size at entrance beyond which a further pregrinding is needed.	200mm	100mm
Insulation of downstream machinery after milling	Not necessary	Necessary
Average cost of spare part	0,8 - 1,2 €/ton	1,2 - 1,5 €/ton
Machine stoppage time for maintenance	8 h	48 h
Necessary hoisting equipment	Fork lift with 3,5 ton capacity	Crane with 10 ton capacity

END PRODUCT COMPARISON
MOLOMAX	Rotating track mill

 

The data shown is indicative and may vary without notice