Vertical Roller Pre-grinding Mills
The Ideal Choice
For Upgradation and Greenfield Grinding Project: Clinker and Raw Meal
The Vertical Roller Pre-grinding Mills developed by AMCL Machinery Limited are based on technical knowhow from Nihon Cement Co. Ltd. Japan. These machines are used for substantial power saving and capacity enhancement in the field of Clinker and Raw meal Grinding. We have over two decades of experience in supply and installations of Vertical Pre Grinding Mills. We have supplied over 30 Installations in India & Middle East.
Efficient Principle of Operation
Compressive & Shear force act simultaneously on material results high grinding efficiency
Clinker or Limestone is fed through a central chute in the VRPM where rotation of the table generates centrifugal force which causes material to spread over the table in uniform layer. Material is caught between rollers & table and subjected to very high compressive Stress. Compressive stresses produces crushing action on the clinker. Friction causes Roller and Table to rotate synchronously generating shearing stresses. Shearing stresses produces grinding action on the clinker. A grinding force is transmitted to a set of three rollers at 120 Degree apart through a hydraulic system. The table and rollers then grind the material, which is then extracted from the VRPM by gravity and a little help from a scrapper.
Sturdy Constructional Features
Swing-out feature provides easy maintenance and reduce down time
Rollers
Grinding Table
Salient Features of VRPM
High efficiency spherical mechanism
Uniform grinding
Fluctuation in feed can be accommodate
Fluctuation in raw material grindability can be accommodate
Possible Configurations
Compactness
Various Model Range Suit The Customer Requirement
Model |
Roller Diameter (mm) |
Roller Width (mm) |
Table Diameter (mm) |
Drive Motor (KW) |
Capacity (TPH) <-2 mm |
VRPM 150-3 | 900 | 315 | 1500 | 550 | 60-75 |
VRPM 180-3 | 1160 | 400 | 1800 | 800 | 90-120 |
VRPM 230-3 | 1400 | 500 | 2300 | 1250 | 150-170 |
VRPM 270-3 | 1760 | 590 | 2700 | 1850 | 240-260 |
Key Benefits
A profit optimizer
Low maintenance
Reduction in specific Power consumption
Increase in production capacity
Long Life for table liner and roller
Less floor space required
Application
Upgradation / Brownfield Projects
Clinker grinding / Raw Material Grinding
VRPM can be integrate with existing Cement Mill circuit to have substantial saving in specific power consumption and increase in production capacity. We have experience of system engineering & layout engineering which allows us to install the VRPM circuit within limited space in existing plant.
Highlights:
- Saving in Specific power consumption.
- Capacity increase from 50% to 90 %.
- Higher Blaine is possible.
- Less maintenance required.
- Can be accommodate in limited space.
Greenfield Projects
Clinker grinding / Raw Material Grinding
We also offers combination of VRPM and Ball Mills along with single separator system to reduce no. of equipment in circuit which result in reduction of overall project cost. This circuit allows to get homogenized product from single dynamic which reduces logistic of the material.
Highlights:
- Single Separator system.
- Less equipment's.
- Lower power consumption.
- Higher Blaine is possible.
- Less maintenance required.