MT Tubular Coal Mill-Liaoning Metallurgical And Mining Heavy Machinery Co, Ltd

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MT Tubular Coal Mill

The tubular coal mill is mainly used for pulverizing various hardness coal in thermal power plants, which is high adaptable, reliable operation and easy maintenance.

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Power plant equipment

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024-25175347

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Detail

Tubular Coal Mill

The tubular coal mill is mainly used for pulverizing various hardness coal in thermal power plants, which is high adaptable, reliable operation and easy maintenance.

The tubular coal mill is driven by motor which rotate the tube through the rod-pin coupling, cylinder gear reducer and open big gear decelerating to drive. The grinding medium (steel ball) is filled in the tube of mill. When the tube is rotating the steel ball is lifted to a certain height by the centrifugal force and friction force, and then falls down by its own gravity. The coal inside tube is knocked and grinded by the falling steel ball. The coal pulverized is blown by the pneumatic equipment into the boiler for combustion or coal bunker for storage.

The static and dynamic lubrication is that the high-low pressure oil pump is also started simultaneously before the coal mill starts. In the critical situation the oil flow with high pressure enters the shaft through the hydrostatic pipeline, and float-lifts the coal mill rotation part to form the oil film on the shaft in order to improve the lubrication when the coal mill starts. When oil flow is continuously supplied by the low pressure after the coal mill starts the dynamic pressure lubrication is realized. The high pressure oil pump stop working after the mill normally rotates for 2-3 minutes, the shaft of coal mill is lubricated relay on the low pressure dynamic pressure lubricating.

The tubular coal mill is equipped with jacking device, screen unloading ball device and slow transmission device in which the screen unloading ball device is used for periodically screening and unloading steel ball, the slow transmission device is used when the tube liner is changed and overhauled. The full complete of auxiliary part supply can easily satisfy with the maintenance and overhaul for the coal mill. The auxiliary parts can be ordered separately as per the user’s requirements.

The coal mill is classified as medium storage type and direct-fired type. The direct-fired coal mill is the double inlet and double outlet tubular coal mill and the module of this kind is BBD.

Name plate instruction

The Parameter Table

Type	Diameter mm	Length mm	Rotation r/min	Ball Quantities (Max)		Feeding mouth Dimension mm	Output t/h
Type	Diameter mm	Length mm	Rotation r/min	Weight t	Filling rate	Feeding mouth Dimension mm	Output t/h
MTZ 2126	2100	2600	22.81	10	0.236	Ф600 600	4
MTZ 2133	2100	3300	22.81	13	0.242	Ф650 650	6
MTZ 2532	2500	3200	20.63	18	0.244	Ф750 750	8
MTZ 2539	2500	3900	20.77	22	0.244	Ф800 800	10
MTZ—W 2935	2900	3500	19.34	26	0.239	Ф850 850	12
MTZ 2935		3500		26	0.239		12
MTZ—W 2941		4100		30	0.236		14
MTZ—W 2947		4700		35	0.24	Ф950 950	16
MTZ 2947		4700		35	0.24	Ф950 950	16
MTZ—W 3247	3200	4700	18.42	44	0.248	Ф1050 1050	20
MTZ 3247		4700	18.52	40	0.225	Ф1120 Ф1310 1120 1310	20
MTZ—W 3258		5800	18.42	55	0.213	Ф1120 1120	25
MTZ 3258		5800	18.46	55	0.213	Ф1120 Ф1310 1120 1310
MTZ 3257		5700	18.54	50	0.194	Ф1120 Ф1310 1120 1310
MTZ 3560	3500	6000	17.57	59	0.217	Ф1300 Ф1450 1300 1450	30
MTZ 3570	3500	7000	17.57	69	0.218	Ф1350 Ф1550 1350 1550	35
MTZ—W 3883	3800	8300	17	95	0.219	Ф1700 1700	50
MTZ 3865		6500		75	0.20	Ф1574 Ф1700 1574 1700	40
MTZ 3872		7200		85	0.205		45
MTZ 3879		7900		95	0.21		50
MTZ 3886		8690		105	0.213		55

The Parameter Table

Type	Main motor				Machine dimensions
Type	Type	Rate KW	Rotation r/min	Voltage v	L (m)	W(m)	H(m)
MTZ 2126	JS128—8 JS136—8 JS137—10	155 145 155	735 709	380 3000 380	8.28	4.71 4.76	4.2
MTZ 2133	JS136—8 JS137—8	180 170	735	380 3000	9.06	4.77	4.2
MTZ 2532	JS147—8 JS1410—8	260 280	735 740	3000 6000	9.8 9.6	5.4	4.6
MTZ 2539	JS148—8 JS157—8	310 320			10.3 10.4	5.5	4.6
MTZ—W 2935	JS1410—8 JS158—8	370 380			8.6	6.8	5.1
MTZ 2935	JS1410—8 JS158—8	370 380			10.9 10.7	6.2 6.3	5.3
MTZ—W 2941	JS1510—8	475	740	6000	11.5	6.3	4.8
MTZ—W 2947	JS158—8 JS1512—8	500 570	735 740	3000 6000	12.03 12.24	6.3	5.3
MTZ 2947	JS158—8 JS1512—8	500 570	735 740		10.04	7	5.2
MTZ—W 3247	JS158—6 JS1510—6	680 650	985		13.8	6.8	5.2
MTZ 3247	Y450—6	630	1000		12.6	6.3	5.4
MTZ—W 3258	HS1510—6 JS1512—6	850 780	985 990		13.9	6.8	5.7
MTZ 3258	HS1510—6 JS1512—6	850 780	985 990		14.1	7.9	5.4
MTZ 3257	Y500—6	800	1000		13.3	6.5	5.4
MTZ 3560	Y630—1—6	1000	985	3000 6000	15.7	7.4	5.6
MTZ 3570	Y630—2—6	1120	985	3000 6000	16.7	7.4	5.6
MTZ—W 3883	Y1000—10/1430	1000x2	595	6000	19.8	9.77	5.5
MTZ 3865	Y800—1—10	1250			17.9	8.8	5.9
MTZ 3872	Y800—2—10	1400			18.6
MTZ 3879	Y800—3—10	1600			19.7
MTZ 3886	Y800—4—10	1800			20.4