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

Home » Product » Grinding Equipment » Rod Mill

Rod Mill

Known for its stability and energy efficiency, our rod mill also contains less consumable parts, which means little money to be spent on replacement. It has become a staple in grinding and ore dressing industry. Different models offer choices of number of grinding drums, diameter and length, allowing customers to select according to their specific application.

Application Areas
Rod mill is most commonly used to conduct aggressive, wet grinding in the ore concentration mill and cement plant. Granted, the equipment can also be utilized in industrial units where gentle dry grinding is called for including building construction and chemical industry.

Structure
Rod mill is a key piece of equipment for grinding crushed materials. It is comprised of feed end, discharge end, rotary drum, girth gear, and gear motor. The gear motor includes a driving gear, through which the rotating energy of the electric motor is transferred to the drum. There is also an electric control unit to ensure the safe, reliable operation of the power transmission system.

Usage
This grinder uses a number of steel rods within the rotating drum to impart grinding action. It is more effective at wet milling action than at dry milling. Common ores that can be processed by this mill include cement, silicate, refractory material, new building material, fertilizer, ferrous metal, nonferrous metal, and glass ceramics.

Work Principle
The girth gear is installed around the external circumference of the drum. The drum rolls along with the girth gear. This driven gear meshes with a small driving gear installed around the output shaft of the gear motor which provides the initial rotating energy to the drum.

The material is fed into the primary grinding chamber by a screw conveyor assembly. The chamber is lined with liner plates of either wedge-shaped or corrugated. As the chamber rotates, the feed material and steel rods are lifted up as far as the centrifugal force can take them. Then the rod fall back down on the material, thereby crushing it to a smaller size. When the coarse grinding is done, the feed material is sent to the secondary grinding chamber via the partition wall. The inner surface of the secondary chamber is covered with smooth liner plates. Friction between steel rods breaks down the material to finer particles. After the fine grinding is completed, the product is discharged through the grate plate.

Features
1. Rod mill is more efficient than ball mill for its aggressive cascading action.
2. It falls one of the two types, either the grate type or overfall type.
3. There are steel rods within the grinding chamber to provide the grinding action. The drum is made of neoprene.
4. The longer the mill runs, the finer the powder will be.
5. Ultimate particle size depends entirely on how hard the material you're grinding is, and the time how long the mill runs.

Technical Specification
Model Rotating Speed (r/min) Steel Rod Load Bearing Capacity (t) Starting Material Size (mm) Resulting Product Size(mm ) Capacity (t/h) Power (kw) Weight (t)
¢900×1800 36-38 1.5 <=20 0.075-0.89 0.65-2 18.5 4.6
¢900×3000 36 2.7 <=20 0.075-0.89 1.1-3.5 22 5.6
¢1200×2400 36 3 <=25 0.075-0.6 1.5-4.8 30 12
¢1200×3000 36 3.5 <=25 0.074-0.4 1.6-5 37 12.8
¢1200×4500 32.4 5 <=25 0.074-0.4 1.6-5.8 55 13.8
¢1500×3000 29.7 7.5 <=25 0.074-0.4 2-5 75 15.6
¢1500×4500 27 11 <=25 0.074-0.4 3-6 90 21
¢1500×5700 28 12 <=25 0.074-0.4 3.5-6 130 24.7
¢1830×3000 25.4 11 <=25 0.074-0.4 4-10 130 28
¢1830×4500 25.4 15 <=25 0.074-0.4 4.5-12 155 32
¢1830×6400 24.1 21 <=25 0.074-0.4 6.5-15 210 34
¢1830×7000 24.1 23 <=25 0.074-0.4 7.5-17 245 36
¢2100×3000 23.7 15 <=25 0.074-0.4 6.5-36 210 34
¢2100×4500 23.7 24 <=25 0.074-0.4 8-43 245 42
¢2100×7000 23.7 26 <=25 0.074-0.4 8-48 280 50
¢2200×4500 21.5 27 <=25 0.074-0.4 9-45 280 48.5
¢2200×6500 21.7 35 <=25 0.074-0.4 14-26 370 52.8
¢2200 ×7000 21.7 35 <=25 0.074-0.4 15-28 380 54
¢2200 ×7500 21.7 35 <=25 0.074-0.4 15-30 380 56
¢2400×4500 21 30 <=25 0.074-0.4 8.5-60 320 65
¢2700×4000 20.7 40 <=25 0.074-0.4 12-80 400 94
¢2700×4500 20.7 48 <=25 0.074-0.4 12-90 430 102
¢3200×4500 18 65 <=25 0.074-0.4 800 137

Related Names
Stone Milling Equipment | Mineral Grinding Machine | Roll Grinder

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