Ball mill

Product Description Water jacket ball mill is a specialized fine grinding equipment for processing dry powder materials in batch production. The user determines the duration of one processing operation depending on the...

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Product Description

The water jacket ball mill is a specialized fine grinding equipment for processing dry powder materials in batch production. The user determines the duration of one processing operation depending on the density, microscopic shape and hardness of the raw material in order to uniformly achieve the grinding fineness required by the customer. At the same time, other auxiliary materials can penetrate into the powder particles and coat them, providing the required technological properties of the product. From the point of view of cost, model selection and performance, the equipment is quite optimal.

Advantages of a water jacketed ball mill: First of all, it should be noted that ball mills are now extremely widely used in the industrial powder field all over the world. This is because among fine grinding equipment, ball mill is widely used due to its simple process, large capacity, low capital investment and no pollution. Therefore, when processing dry powder using a water-jacketed ball mill, the heat generated during processing inside the drum is transferred to the steel body and removed by water; Usually the water temperature difference is 3–5 degrees. Even when processing high-hardness raw materials, the maximum difference in water temperature reaches 8–10 degrees.

Currently, China's industry is developing rapidly; In the chemical industry, biochemical industry, production of high-quality coatings, resins, pharmaceutical and other industries, a ball mill with a water jacket is used for processing dry powders and packaging them, which is quite the optimal equipment for processing powdered materials.

Technical Parameters

Model	WH-Φ2040×2200
Load capacity	1.5 t/time
Material to ball ratio	1:1.3–1.8
Drum volume (after ceramic lining)	6.4 m³
Drum speed	0–22 rpm
Engine power	37 kW
Water jacket height	50 mm
Cooling water pressure	0.1–0.25 MPa
Gear form, gear	m=14, z=22, z=145
Top cover material	304 stainless steel
Bearing model	53538
Gearbox model	ZLY224 (gear ratio 1:6.3)
Gearbox lubricating oil	220 high speed gear oil
Weight of one machine (with ceramic lining)	8 t (when equipped with a 3 t frame)
Dimensions	3200×2200 (mm)
Optimal cooling water temperature	20°–25°
Rotating joints	left DN40, right DN40
Ratio of ceramic balls (2.2t)	40:50:60 = 2:4:4
Ceramic lined mass (including frame and motor)	5.3 t (2.7 t)

Design and operating principle

A water-jacketed ball mill consists of a drum, gearbox, electric motor and other components. The drum consists of a hollow shaft, end water chambers, reinforcing ribs, water guide channels, sealing ring plates and a drum body. The rotation of the drum is carried out due to the engagement of the small gear on the output shaft of the gear reducer with the large gear. Overall the drive system is not complex; a complete set of equipment is installed on a solid frame; Double-row self-aligning roller bearings are used on the rotating ends of the shaft.

The operating principle of a ball mill is not complicated. When rotating, the ceramic balls along with the powder rise to a certain height above the center (the specific height depends on the rotation speed). Under the influence of gravity, a cascading slide down occurs, impact and friction occur between the ceramic balls and the powder, as a result of which a certain amount of heat is released. This heat is dissipated by the cooling water through the water jacket to prevent the powder from overheating in the drum, causing it to harden and deteriorate the flow of the material. The discharge opening of the machine is equipped with three covers (loading cover, grinding cover and unloading cover), which are respectively used in the three stages of the grinding process: loading, grinding and powder sifting.

Amino plastic production line

Amino resins include three main categories: urea-formaldehyde electrical powder (UF/A1), melamine powder (MF/A5) and tableware finishing powder. Complete production lines are equipped with the entire technological cycle: resin synthesis → dosing and mixing → drying → crushing and grinding → sifting and dust removal → packaging of finished products. Standardized series with a capacity of 10/20/30 tons per day are offered, as well as individual non-standard design for an annual capacity of 3000–10000 tons.