Drum Coal Mill

Category

Drum mill

Product description

Parameters

Drum Coal Mill is mainly used in milling coal of various hardness in coal-fired power plant. It is of strong suitabillity, reliable operation and convenient maintenance.

The technology of which was introduced from STEIN IN DUSTRIC and FOS TERWHEELER ENERGY CORPORATION In 1980-1990, Absorb the advanced technology to improving production capability of traditional Drum Coal Mill, forming new series of drum coal mill.

Parameters

Type	Drawing No.	Barrel dia. (mm)	Barrel length (mm)	Mill speed (r/min)	Main motor				Max. balls weight		Inlet & outlet size (mm)	Output (t/h)	Weight (t)
Type	Drawing No.	Barrel dia. (mm)	Barrel length (mm)	Mill speed (r/min)	Model	Power (KW)	Speed (r/min)	Voltage (v)	Weight (t)	Adding Rate (%)	Inlet & outlet size (mm)	Output (t/h)	Weight (t)
MTZ2126	K9311	21	2600	22.81	JS128-8 JS136-8	155 145	735 709	380 3000	10	0.236	Φ600 600	4	37
MTZ2133	K9312	21	3300	22.81	JS136-8 JS137-8	170 180	735	380 3000	13	0.242	Φ650 650	6	38.5
MTZ2532	K9321	2500	3200	20.6	JS147-8 JS1410-8	260 280	735 740	3000 6000	18	0.244	Φ750 750	8	51.1
MTZ2539	K9322	2500	3900	20.77	JS147-8 JS1410-8	260 280	735 740	3000 6000	22	0.244	Φ800 800	10	54.2
MTZ2935	K9336	2900	3500	19.34	YTM500-8	380	740	6000	26	0.239	Φ850 850	12	77
MTZ2941	K9337		4100			450			30	0.236	Φ850 850	14	80.7
MTZ2947	K9338		4700			560			35	0.24	Φ950 950	16	84.1
MTZ3247	K9345	3200	4700	18.52	YTM450-6	630			40	0.225	Φ1120 1120	20	101.8
MTZ3257	K9346		5700	18.54	YTM500-6	800	1000		50	0.194		25	109.2
MTZ3258	K9348		5800	18.54	YTM500-6	800			50	0.213		25	112.1
MTZ3560	K9359	3500	6000	17.57	YTM630-1-6	1000	985		59	0.217	Φ1300 1300	30	142.0
MTZ3570	K93510	3500	7000	17.57	YTM630-2-6	1120	985		69	0.218	Φ1350 1350	35	150.0
MTZ3865	K9363	3800	6300	17	YTM800-1-10	1250	595		75	0.20	Φ1574 1570	40	193.0
MTZ3872	K9364		7200		YTM800-2-10	1400			85	0.205	Φ1574 1574	45	199.5
MTZ3879	K9365		7900		YTM800-3-10 1430	1600			95	0.21	Φ1574 1574	50	207.0
MTZ3883	K362		8300		YTM1000-10	1000 ×2			95	0.219	Φ1700 1700	50	219.7
MTZ3886	K9366		8600		YTM800-4-10	1800			105	0.213	Φ1574 1774	55	214.0

Theory of Drum Coal Mill

The motor drives the drum coal mill by means of driving the barrel of the mill through bar-pin coupling, cylindrical gear reducer and open girth-pinion reducing.

The grinding medium (steel balls) is filled in the mill shell. When the barrel is rotating, the steel balls are raised up to definite altitude by centrifugal and friction force, then fall down by their own gravity. The coal in the shell is ground into powder by the impacting and grinding of the falling balls. The ground coal powder is sent by the pneumatic equipment in the milling system to the boiler for burning or to the coal powder storehouse.