As a three-roll mill manufacturer, KRS configures each machine to the product, the required fineness and the batch sizes involved.
PRODUCTS – HYDRAULIC THREE-ROLL MILLS
Hydraulic Three-Roll Mill Manufacturer in India
KRS DISPERMAHLTECHNIK manufactures hydraulic three-roll mills for controlled dispersion and refining of paste inks, pigment pastes and other high-viscosity products.
OVERVIEW
What is a hydraulic three-roll mill?
A three-roll mill disperses and refines pastes between three horizontal rolls that turn in opposite directions at different speeds; the paste is sheared in the narrow gaps between them. In a hydraulic three-roll mill the pressure between the rolls is applied hydraulically, so that it can be set and held consistently. It is the milling machinery of choice where products are too viscous for a bead mill and a controlled, very uniform dispersion is required.
HOW IT WORKS
How a three-roll mill works
Feed
The paste is fed between the first two rolls, which rotate in opposite directions at different speeds.
Shear in the gaps
High shear in the narrow gaps between the rolls disperses and refines the product.
Take-off
A scraper blade takes the finished product off the last roll. The gap setting determines the fineness.
CONSTRUCTION
Machine construction and key features
A KRS three-roll mill carries three rolls between two machine side frames, with a feed zone and side guides between the first two rolls and a take-off apron with collecting tray at the last roll. The pressure between the rolls is applied hydraulically, and the machine is operated from a touchscreen control panel on a swivel arm.
- Three rollsRunning at different speeds to create shear in the roll gaps
- Hydraulic roll pressurePressure between the rolls applied hydraulically
- Feed zone with side guidesBetween the first two rolls
- Scraper take-off and collecting trayTakes the finished paste off the last roll
- Touchscreen control panelOn a swivel arm, with emergency stops on the machine
CONFIGURATION
Configured to your requirements
We define these points with you for each machine.
- RollsRoll size and material for your product
- Gap settingGap adjustment for the required fineness
- SpeedRoll speeds and ratios
- TemperatureRoll cooling for heat-sensitive products
- HandlingFeeding and take-off arrangement
Technical data. Specifications for your machine are provided with the quotation, based on your product and process requirements.
INDUSTRIES
Paint, ink, coating and chemical applications
Where KRS hydraulic three-roll mills are used. See all industrial dispersion applications.
Printing ink
Refining paste printing inks, where the three-roll mill is the traditional finishing machine.
Paint
Grinding high-viscosity paint pastes and tinting concentrates.
Pigments
Producing pigment pastes and concentrates.
Coatings
Dispersion of high-viscosity coating pastes.
Chemicals
Processing viscous chemical pastes.
Advanced materials
Refining functional pastes that need a controlled, very uniform dispersion.
MANUFACTURING & INSTALLATION
Built and installed by KRS
Every machine is engineered, fabricated and assembled by KRS in Coimbatore, India, and KRS engineers support installation and commissioning at the customer site.
- EngineeringMachine configuration for your product and plant
- ManufacturingFabrication and assembly in the KRS workshop
- Installation and commissioningSupport at the customer site
- Process lineCombine with High Speed Dispersers and High Energy Bead Mills
PHOTOS
KRS Hydraulic Three-Roll Mills in the workshop and on site
What is a hydraulic three-roll mill?
A three-roll mill in which the pressure between the rolls is applied hydraulically. Three horizontal rolls running at different speeds disperse and refine high-viscosity pastes in the gaps between them.
What is a three-roll mill used for?
For dispersing and refining high-viscosity products – paste printing inks, pigment pastes and concentrates, and other viscous formulations that are difficult to process in a bead mill.
How does a three-roll mill work?
The paste is fed between the first two rolls. Because neighbouring rolls run at different speeds, the product is sheared in the narrow gaps, transferred to the last roll and taken off by a scraper blade. The gap setting determines the fineness.
What applications use three-roll mills?
Paste printing inks, pigment pastes and concentrates, high-viscosity paints and coatings, and other viscous chemical products.
How do I select a three-roll mill?
By the viscosity of the product, the required fineness, the batch sizes and throughput, and whether the product is heat-sensitive and needs roll cooling. KRS configures the mill around these points.
What information is required for a three-roll mill quotation?
Your product and application, viscosity, batch size or throughput, target fineness and any temperature sensitivity of the product.
RELATED
Other KRS machines
Request a quote for Hydraulic Three-Roll Mills
Tell us about your product, batch size and target result.