2100 X 3000MM Industrial Ball Mill 2400 X 4500MM High Energy Ball Milling

ball mill model 900*1800/1200*4500/2100*3000/2400*4500

Ball Mill

• Working Principle
  • Movement of Grinding Bodies: The main body of a ball mill is a horizontally placed, low-speed rotating cylinder supported by two large bearings. Inside the cylinder, there are grinding media, usually steel balls, and sometimes steel columns, steel bars, or pebbles c also be used. When the ball mill rotates, the grinding media adhere to the lining plate on the inner wall of the cylinder under the action of inertial centrifugal force. They rotate with the cylinder and are carried to a certain height, and then fall freely under the action of gravity. Like projectiles, they crush the materials in the cylinder.
  • Material Grinding: During the rotation of the cylinder, the grinding media also slide and roll, causing a grinding action among the grinding media, the lining plate, and the materials, thus grinding the materials finer. Meanwhile, due to the continuous forced feeding at the feeding end and the height difference of the material surface between the feeding end and the discharging end, the materials slowly flow from the feeding end to the discharging end to complete the grinding operation.
• Mechanical Structure
  • Feeding Part: It is responsible for evenly feeding the materials to be ground into the cylinder of the ball mill. It usually includes a feed inlet, a feed hopper, and devices to control the feeding speed.
  • Discharging Part: Its main function is to discharge the ground materials from the cylinder. It consists of components such as a discharge port and a discharge hopper. Some are also equipped with a screening device to conduct a preliminary screening of the discharged materials.
  • Rotating Part: It is the core part of the ball mill, consisting of the cylinder, lining plate, grinding media, etc. The cylinder is generally welded by steel plates and closed at both ends by end covers. The inner wall of the cylinder is inlaid with wear-resistant lining plates to protect the cylinder and enhance the grinding effect. The grinding media are the key media for grinding materials.
  • Driving Part: It is composed of a reduction gear, a small driving gear, an electric motor, and an electric control system. The electric motor drives the large gear fixed on the cylinder shell through the reduction gear and the small driving gear, enabling the cylinder to rotate and providing power for the operation of the ball mill.
• Classification Methods
  • According to Cylinder Shape: The short cylinder ball mill has a length-to-diameter ratio of the cylinder between 1 and 2; the tube ball mill has a length-to-diameter ratio between 2 and 7; the conical ball mill has a length-to-diameter ratio between 0.25 and 1.0.
  • According to Operation Mode: The batch ball mill is suitable for the grinding of small-batch and multi-variety materials and can be started and stopped at any time as needed; the continuous ball mill can achieve continuous feeding and discharging of materials with high production efficiency, and can be further divided into open-circuit ball mill, circulating (closed-circuit) ball mill, and air-swept ball mill.
  • According to Discharging Mode: The central discharging ball mill includes the overflow ball mill and the grate ball mill; the peripheral discharging ball mill discharges materials from the discharge port around the cylinder; the intermediate discharging ball mill is equipped with a discharge port in the middle of the cylinder.
• Characteristics and Advantages
  • Strong Adaptability: It can handle various raw materials of different types and hardness, including ores, cement, construction waste, etc., and can be used for both dry and wet grinding.
  • High Grinding Precision: It can grind materials to the required fineness, achieving a high grinding effect and meeting the particle size requirements of different production processes.
  • Large Production Capacity: By adjusting parameters such as the discharge port, it can achieve the grinding of materials with different fineness requirements. Moreover, it can handle a large amount of raw materials in batches, improving production efficiency.
  • Stable and Reliable Operation: Made of high-quality steel and advanced manufacturing processes, it has a stable structure and is not prone to failure during long-term operation. Meanwhile, the automatic control system can automatically adjust the quantity of grinding media and the running speed to ensure the stability of the production process.
  • Low Maintenance Cost: It has a relatively simple mechanical structure. The main wearing parts such as the lining plate and grinding media are easy to replace. Only regular inspection and replacement of worn parts are required, resulting in low maintenance costs.
• Application Fields
  • Cement Industry: It is used to grind cement clinker, gypsum, and other raw materials into finished cement, improving the strength and quality of cement.
  • Mineral Processing: It grinds various metal and non-metal ores, providing qualified raw materials for subsequent beneficiation, smelting, and other processes, such as the grinding of iron ore, copper ore, gold ore, etc.
  • Building Materials Industry: Besides cement production, it can also be used to grind raw materials for building materials such as limestone, clay, and quartz sand to produce concrete admixtures, glass ceramics, and other products.
  • Chemical Industry: It is used to grind chemical raw materials such as pigments, coatings, rubber fillers, and catalysts to meet the particle size requirements in the chemical production process and improve product quality and reaction efficiency.
  • Metallurgical Industry: In iron and steel metallurgy, it can grind iron ore, manganese ore, etc., providing raw materials with suitable particle size for ironmaking, steelmaking, and other processes. It can also be used for the preparation of metal powders, such as the grinding of metal powders in powder metallurgy processes
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  Model	Rotary speed (r/min)	Balls load (t)	Feeding size (mm)	Discharging size (mm)	Capacity (t/h)	Motor Power (kw)	Weight (t)
  φ900×1800	36 - 38	1.5	≤20	0.075 - 0.89	0.65 - 2	18.5	4.6
  φ900×3000	36	2.7	≤20	0.075 - 0.89	1.1 - 3.5	22	5.6
  φ1200×2400	36	3	≤25	0.075 - 0.6	1.5 - 4.8	30	12
  φ1200×3000	36	3.5	≤25	0.074 - 0.4	1.6 - 5	37	12.8
  φ1200×4500	32.4	5	≤25	0.074 - 0.4	1.6 - 5.8	55	13.8
  φ1500×3000	29.7	7.5	≤25	0.074 - 0.4	2 - 5	75	15.6
  φ1500×4500	27	11	≤25	0.074 - 0.4	3 - 6	90	21
  φ1500×5700	28	12	≤25	0.074 - 0.4	3.5 - 6	130	24.7
  φ1830×3000	25.4	11	≤25	0.074 - 0.4	4 - 10	130	28
  φ1830×4500	25.4	15	≤25	0.074 - 0.4	4.5 - 12	155	32
  φ1830×6400	24.1	15	≤25	0.074 - 0.4	6.5 - 15	180	34
  φ1830×7000	24.1	21	≤25	0.074 - 0.4	7.5 - 17	210	36
  φ2100×3000	23.7	15	≤25	0.074 - 0.4	6.5 - 36	210	34
  φ2100×4500	23.7	24	≤25	0.074 - 0.4	8 - 43	245	42
  φ2100×7000	23.7	38	≤25	0.074 - 0.4	8 - 48	320	50
  φ2200×4500	21.5	27	≤25	0.074 - 0.4	9 - 45	280	48.5
  φ2200×6500	21.7	33	≤25	0.074 - 0.4	14 - 26	370	52.8
  φ2200×7000	21.7	35	≤25	0.074 - 0.4	15 - 28	380	54
  φ2200×7500	21.7	37	≤25	0.074 - 0.4	15 - 30	380	56
  φ2400×4500	21	30	≤25	0.074 - 0.4	8.5 - 60	320	65
  φ2700×4000	20.7	40	≤25	0.074 - 0.4	12 - 80	400	94
  φ2700×4500	20.7	48	≤25	0.074 - 0.4	12 - 90	430	102
  φ3200×4500	18	65	≤25	0.074 - 0.4	25 - 130	800	137