100TPD-3000TPD Rod Mill Mineral Grinding Equipment

Rod Mill

1.Product Introduction

The rod mill is a cylindrical rotating grinding device. Its primary structure includes the cylinder, transmission system, feed/discharge apparatus, and steel rods serving as grinding media. The equipment utilizes an electric motor to drive the cylinder rotation, which in turn propels the internal steel rods to grind the material.

2.Application

• Applicable Ore Types: Commonly used for processing feldspar, quartz, pebbles, and other mineral materials. In copper ore processing, it is frequently employed for coarse grinding or pre-treatment stages requiring control of product fineness.
• Industries: Widely applied in medium and fine crushing operations across mining, chemical, cement, and building materials industries.

3.Working Principle

The working principle of the rod mill is based on the rolling friction and selective grinding of steel rods. An electric motor drives the cylinder to rotate. Under the combined effects of centrifugal force and friction, the steel rods inside the cylinder are lifted to a certain height before falling.Material continuously enters the cylinder through the feed inlet, where it undergoes impact, compression, and grinding between the falling steel rods, achieving fragmentation. The ground product is discharged from the machine via overflow or continuous feed discharge. Its unique feature lies in the “line contact” method between steel rods, which facilitates more uniform grinding and reduces over-grinding.

4.Advantages

• Product particle size is uniform with minimal over-grinding: The line contact grinding method of steel rods enables selective processing of materials, effectively reducing secondary grinding of already crushed particles. This lowers powder content in the final product and yields a more uniform particle size distribution.

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  High grinding efficiency and large production capacity: In certain applications, rod mills offer higher production capacity compared to ball mills.

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  Lower operating costs: Some rod mill models can save over 40% in power consumption compared to traditional equipment, reducing energy costs.

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  Strong adaptability: Particularly suitable for processing brittle ores, producing a high proportion of medium-sized particles with excellent gradation continuity.

5.Technical Specifications

6.Our Solutions