Introduction

Vertical Coal Mill is a mechanical machine used to pulverize coal for combustion in the steam-generating furnaces of fossil fuel power plants. Vertical coal mill is the ideal powder making equipment in electric power industry, metallurgy industry, chemical industry, building construction, coal industry, fireproofing materials making industry and some others. The final product’s fineness of vertical coal mill can reach 38micron (400mesh). Grinding pressure can be adjusted to account for variations in coal grindability and desired product fineness. 

Vertical coal mills are designed to achieve the maximum rated capacity grinding a design coal with a grindability of 55 HGI and 8-12 percent moisture and achieving a discharge fineness of 70 per cent passing a 200 mesh screen (74 micron) and 99.5 per cent passing a 50 mesh screen. Variation of the coal hardness and/or moisture content will effect, up or down, the discharge capacity or the discharge fineness.

Parameter

Parameter	Unit	HRM800	HRM1100	HRM1250	HRM1300	PRM17	PRM23	PRM25
Capacity	T/H	5-7	10-12	16-18	20-25	26-35	40-45	50-58
The size  of grinding  material	mm	0-40	0-40	0-40	0-40	0-40	0-50	0-50
The moisture  of  grinding  material	%	<10	<10	<10	<10	<10	<10	<10
Fineness  R0.08	%	8-12	8-12	8-12	8-12	8-12	8-12	8-12
The  moisture  of product	%	<1	<1	<1	<1	<1	<1	<1
Power	KW	55	110	160	200	400	400	450
The wind  temperature  of input	℃	≤350	≤350	≤350	≤350	≤350	≤350	≤350
The wind  temperature  of outlet	℃	80-100	80-100	80-100	80-100	80-100	80-100	80-100
The air  volume of  outlet	m3/H	≈10000	≈20000	≈30000	≈40000	≈80000	≈80000	≈100000
The  weight  of  equipment	T	16	22	32	40	96	135	167