The ball mill is a necessary part of the raw material preparation section

The ball mill is a necessary part of the raw material preparation section. There are two kinds of ball mill in an AAC production line: wet type and dry type. Wet type ball mill is used to mill sand while the dry type is for lime stone.

 

The ball mill comprises several main parts, like feeding part, discharging part, rotating part, transmission part (gear reducer, small transmission gear, motor, electronic controller). The hallow shaft is made from casting steel parts, and its lining is interchangeable. The big rotating gear is processed with casting steel parts by gear hobbing. The inner wall of the barrel is embedded with an anti-wear lining plate. In general, this ball mill is stable and reliable for the milling operation.

 

Principle

1. Wet Type Ball Mill

Sand (or fly ash, gypsum) is conveyed to the ball mill by electromagnetic vibration conveyor and belt conveyor. After milling, the material will be pumped to the slurry storage container.

2. Dry Type Ball Mill

Lime is conveyed to the jaw crusher by electromagnetic vibration feeding machine and belt conveyor. After crushing, the material will be conveyed to the lime storage silo by the bucket conveyor. Then the lime gravel will be transferred to the ball mill through a screw conveyor. The grinded material then will be conveyed to the powder storage silo by spiral conveyor screw conveyor and bucket conveyor.

 

Parameters

Model	Rotating speed (rpm)	Steel ball (ton)	Original material size (mm)	Final material size (mm)	Production capacity (ton/h)	Power (kW)	Weight (ton)
φ900×1800	38	1.5	≤20	0.075-0.89	0.65-2	18.5	3.6
φ900×3000	38	2.7	≤20	0.075-0.89	1.1-3.5	22	4.6
φ1200×2400	32	3.8	≤25	0.075-0.6	1.5-4.8	45	12.5
φ1200×3000	32	5	≤25	0.074-0.4	1.6-5	45	12.8
φ1200×4500	32	7	≤25	0.074-0.4	1.6-5.8	55	13.8
φ1500×3000	27	8	≤25	0.074-0.4	2-5	90	17
φ1500×4500	27	14	≤25	0.074-0.4	3-6	110	21
φ1500×5700	27	15	≤25	0.074-0.4	3.5-6	132	2407
φ1830×3000	24	11	≤25	0.074-0.4	4-10	180	28
φ1830×6400	24	23	≤25	0.074-0.4	6.5-15	210	34
φ1830×7000	24	25	≤25	0.074-0.4	7.5-17	245	36
φ2200×5500	21	30	≤25	0.074-0.4	10-22	370	48.5
φ2200×6500	21	30	≤25	0.074-0.4	14-26	380	52.8
φ2200×7500	21	33	≤25	0.074-0.4	16-29	475	56