Vertical Raw Mill

The vertical raw mill has high grinding efficiency. Due to innovative material-grinding principle, it reduces power consumption by 20-30% as compared with ball mills. The higher the feeding material moisture content, the more energy the machine can save.

The grinding mill has high drying capacity, as it uses the hot waste gas from the cement kiln for material drying. It supports drying and grinding of feeding raw mix with moisture content as high as 15%.

It offers simplified processing flow, so the structure is compact. Our PFRM range of vertical mill combines material crushing, drying, grinding, separating, and conveying functions. Hence, it requires no additional equipment such as dryer, powder separator, and elevator. Thus, the installation space and workshop space of PFRM is only 70%, and 50-60% of that of ball mills, respectively.

Our vertical raw mill features low noise and low dust. As the grinding wheel and the grinding rollers don’t contact with each other directly, the operation noise is 20-25dB lower than that of ball mills. The fully enclosed, negative pressure grinding system ensures no dust and clean working environment.

Due to low wear loss, there is low metallic pollution for ground materials. The metal wear loss is only 5-10g/t.

The grinding rollers supports alternatively use of the two ends, which doubles the Ground cement raw mix come with stable chemical components and uniform particle size distribution, which facilitates cement clinker sintering.

Technical Specifications

Model	PFRM 53.4	PFRM 38.4	PFRM 36.4	PFRM 34.4	PFRM 32.4	PFRM 28.3	PFRM 27.3	PFRM 25.2	PFRM 22.2	PFRM 17.2	PFRM 14.2
Grinding wheel diameter (mm)	5300	3800	3600	3400	3200	2800	2700	2500	2200	1700	1400
Grinding roller quantity	4	4	4	4	4	3	3	2	2	2	2
Installed power (kW)	3600 ～4000	2000 ～2500	1800 ～2240	1600 ～1800	1400 ～1600	800 ～1250	800 ～1000	710 ～900	400 ～500	200 ～250	132 ～155
Powder separator power (kW)	200	132	110	90	90	75	55	45	30	15	11
Max. feed size (mm)	≤100	≤85	≤80	≤70	≤70	≤70	≤65	≤70	≤50	≤40	≤40
Feed raw mix moisture content ( %)	6	6	6	6	6	6	6	6	6	6	6
Screen residue (Ground material fineness 80µm) (%)	12~14	12~14	12~14	12~14	12~14	12~14	12~14	12~14	12~14	12~14	12~14
Discharging material moisture content (%)	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5
Raw mix grindability index (Wi)	7.5~13	7.5~13	7.5~13	7.5~13	7.5~13	7.5~13	7.5~13	7.5~13	7.5~13	7.5~13	7.5~13
Production capacity (t/h)	330~510	185~280	170 ～260	140 ～210	125 ～190	85 ～130	78 ～120	60 ～90	40 ～65	22 ～33	13 ～20

Related Names
Powder Grinding Mill | Mineral Grinding Machine | Raw Material Processing Plant

Jiangsu Pengfei Group Co., Ltd. is a leading manufacturer of rotary kilns and grinding equipment, and in 2019, we were successfully listed on the Hong Kong stock exchange, demonstrating our close relationships with our customers. At Pengfei, we offer design, production and services for construction, metallurgy, chemical and environmental protection industry. As an EPC service provider, we provide customized one-stop solutions including design, procurement, construction and trial operations to better serve our clients.