AGICO CEMENT and LCDRI have successfully completed more than 80 cement EPC projects and 600 design projects of cement production lines around the world.

Damp Mill

damp mills agico

Capacity: 18-92 t/h

Material: various kinds of ores and metals.

Application Scope: cement plant, fertilizer plant, iron ore pelletizing plant, etc.

Customization: support

The damp mill is an improved design based on the ball mill. It adopts a unique feeding and discharging method to solve the movement problem of semi-dry and semi-wet materials in the mill. Generally, the ball mill can be divided into the wet type and dry type, with water and air as the carrier for forced material discharge or grid plate discharge. They seldom deal with semi-dry and semi-wet materials. Damp mill, as its unique structure, can efficiently grind the material containing certain moisture. It has three main features: forced feeding, peripheral discharging, and rubber lining.

As the main equipment in iron ore pelletizing plants, a damp mill is mainly used for the damp grinding of iron ore to provide materials for the pelletizing disc. It can deal with the iron ore with a water content of 8-13%, not only increase the surface area of the ore particles but also make the ore fully mixed and ground to shorten the whole pelletizing process. Besides, it can also reduce the production energy consumption, increase the strength of green pellets, and improve the metal recovery rate, so it has been widely used in pelletizing plants.

damp mill on site
Damp Mill On Site

Damp Mill Structure

The damp mill is mainly composed of a feeding part, main bearing, cylinder, gear device, reducer, main motor, low-speed driving unit, jacking device, lubricating device, electric control device, and other parts.

damp mill structure
Damp Mill Structure

Highlights Of Damp Mill


Specification MR2265 MR2470 MR3254 MR3562 MR3870
Cylinder Diameter(mm) 2200 2400 3200 3500 3800
Cylinder Length(mm) 6500 7000 5400 6200 7000
Cylinder Effective Capacity(m3) 21.4 29.3 39.5 55.6 73.6
Loading Capacity Material(t) 3.4 5 6 8.7 11.3
Steel Ball(t) 24 32 44 64 83
Cylinder Rotation Speed(r/min) 21.95 19.28 16.5 15.47 14.3
Output(t/h) 18-25 30-40 45-55 55-70 70-92
Main Motor Power(kw) 280 570 630 1000 1250
Main Reducer Speed Ratio 5 5 4.96 6.74 7.1
Driving Device Motor Power(kw) 11 11 11 11
Reducer Speed Ratio 90 500 355 90
Rotation Speed(r/min) 1.62 1.94 2.056 2.06
Conveying Device Power(kw) 11 22 22 22 30
Rotation Speed(r/min) 23.3 23.3 23.3 23.25 23.25
Speed Ratio 43 43 43 43 43
Dimension(L×W×H)(mm) 10970×5625×4055 15400×6685×4885 13400×7250×5700 15473×7707×6280 16400×8738×7590
Weight(t) 63 92 122.1 135 180

Damp Mill Working Principle

The damp mill is a kind of single chamber and peripheral discharge ball mill. The equipment cylinder with grinding medium (steel ball) inside is driven to rotate through the main motor, reducer, and gear device. After materials enter the cylinder through the quill shaft, the grinding medium is lifted to a certain height under the combined action of lining plate friction and centrifugal force, and then falls, giving the material a certain impact force so that the large-sized materials are broken. After the materials are fully ground and mixed, they are discharged from the damp mill through the discharge holes around the cylinder.

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