Henan Dajia Mining Machinery Co., Ltd.

Add.: 500 meters west, Rizhao Road and Industrial Road, Mazhai Industrial Zone, Zhengzhou City, China
Tel.: +86-371-67575157
+86-371-86552260
Fax: +86-371-67575197
+86-371-86552260

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Ball Mill

Ball Mill

The ball mill is commonplace in the ore dressing plant and cement factory. It serves to pulverize literally any granulated materials. Often used in conjunction with crushing equipment, the device provides users with large handling capacity, ease of operation, and maximum stability.

Various ores and other materials, either wet or dry, can be ground by this grinding machine. Depending on the ways of discharging materials, this grinder can take two forms: grate type and overfall type.

Usage
The ball mill is a key device for grinding crushed materials. It is widely used in the production line for powders such as cement, silicates, building materials, refractory material, fertilizer, and glass ceramics as well as for ore dressing of both ferrous and non-ferrous metals.

Structure
Our grate-type ball mill consists of a cylindrical drum. Around the circumference of the drum is installed a girth gear that serves as the driven gear. This driven gear meshes with a small driving gear installed around the output shaft of the gearmotor. The rotational motion of the electric motor is transmitted to the girth gear via a gear reducer. The drum is divided into two grinding chambers.

Work Principle
Raw materials are uniformly supplied to the primary grinding chamber via the inlet. This motion is driven by helical gears with hollow shaft. Wedge-shaped or corrugated liner plates form the inner wall of the chamber and provide replaceable, wear-resistant grinding surface. Steel balls of different sizes are added to chamber, too. As the chamber rotates, the centrifugal force takes the steel balls up to a certain height level before they fall back down with large impact force on the materials to be ground. When this coarse grinding is completed, the material is taken to the secondary chamber via a partition diaphragm, or partition wall. The inner wall of secondary chamber is lined with smooth liner plates. Steel balls are available as well, to enable fine grinding. The resulting powder passes through the grate plate and is discharged from the drum.

The ball mill is an integral part of grinding line. It reduces the particles to the required fineness. Millimeter-sized rocks, pulverized coal, and other extremely hard materials are common products resulting from this machine. Grinding often comes after crushing in ore dressing operation. Its main purpose is to grind ores and separate valuable mineral powder from wastes.

Technical Specification
Specification Drum Rotation Speed (r/min) Steel Balls Weight (t) Starting Granule Size(mm) Resulting Power Size (mm) Production 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 21 ≤25 0.074-0.4 6.5-15 210 34
φ1830×7000 24.1 23 ≤25 0.074-0.4 7.5-17 245 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 26 ≤25 0.074-0.4 848 280 50
φ2200×4500 21.5 27 ≤25 0.074-0.4 9-45 280 48.5
φ2200×6500 21.7 35 ≤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 35 ≤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
Premium Accessories
High-Quality Hollow Shaft Ceramic Ball, Flint Pebbles Steel Ball for Grinding Liner Plate

Related Names
Mineral Grinding Machine | Wet Grinding Mill | China Pellet Grinder

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