Capacity: 18-92 t/h
Material: various kinds of ores and metals.
Application Scope: cement plant, fertilizer plant, iron ore pelletizing plant, etc.
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 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.
Highlights Of Damp Mill
|Cylinder Effective Capacity(m3)||21.4||29.3||39.5||55.6||73.6|
|Cylinder Rotation Speed(r/min)||21.95||19.28||16.5||15.47||14.3|
|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|
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.