Working principle of roller press:
Roller press is composed of two extrude roller rotating in reverse
direction, one is fixed roller and the other is moveable roller. Material will be fed from the above of two rollers, be
brought into by extrude roller, then it will be discharged in
material cakes under the machine after being pressed by 50-150MPa
strength. Discharged material cakes will include some finished fine
particle, besides lots of half-finished particles with cracks will
be produced which will reduce energy consumption during following
crushing process.
Characters of roller mill:
1) Erect roller press into grinding system which could improve the
capacity as 30%-40% meanwhile total power consumption will reduce
as 20%-30%.
2) Roller press with tight structure and small volume could obviously
reduce the investment for grinding system
3) Roller press with simple structure, small space and easy operation and
maintenance.
4) Compared with other grinding equipments, roller press with less
powder and lower noise which largely improve the working condition.
Technical parameters of vertical roller pre-grinding machine:
Product advantage:
1. The press roller surface adopts hard alloy stud setting-in
structure to increase the life time of the roller sleeve
2. Universal coupling-planetary retarder-press roller to consist of
shaft flexible drive system
3. Compound structure of non-contact sealing and contact sealing
are adopted at the side of the press roller
4. Unique ellipse structure is used for the feeding pipe to make
the feeding process smooth
5. Oil spray lubrication system is used for the lubrication of the
main bearing
6. The main bearing adopts inner passage fully-sealing structure
for cooling
7. The hard alloy welding press roller surface or setting-in
surface are available depending on the user’s need.
Applicable scope1. Applicable for the mineral processing industry; it can be
installed before the ball mill as pre-milling equipment or consist
of mixing grinding system with ball mill.
2. Applicable for oxide pellet industry instead of the common used
damp mill.
3. Applicable for building material and fire-proof material
industry; successful application for the grinding of clinker,
limestone and bauxite.
Always up to expectations.
The CITICIC Roller Press is available in eight standard sizes
ranging in grinding force from 2 to 20 meganewtons. CITIC Roller
Presses offer a reliable solution for every application for
grinding cement, slag, raw material or for special applications,
such as preparation of ore.
A driving force: reasonably stressed.
The drive power is transferred to the grinding rollers via
multi-stage planetary gearboxes with first stage spur gears. The
gearboxes are mounted on the drive end of the roller shaft using a
hydraulic shrink coupling.. A V-belt drive can be used for drives
of up to approx. 400kW per motor. Drives above 400kW are equipped
with fluid or safe set coupling and cardan shaft.
A framework you'll work better with.
The machine frame has identical upper and lower tiebars. Rubber
pads are placed between the roller bearing blocks and the frame
ends. The rubber pads act as an articulated joint and have a
vibration damping effect. The RPS-type as a special type reduces
maintenance time during roller changes. The doors in the roll cover
permit rapid and wide access to the rollers for inspection and
maintenance.
In CITTIC Roller Presses, the rollers are supported in radial,
multi-row cylindrical roller bearings. This ensures an even load
distribution on the roller bearing, substantially increasing the
life of the bearing.
Additional long life design features of CITIC Roller Presses
include:
- Generously sized bearing load factor
- Continuous feeding of filtered lubrication oil
- Bearings cooled by the lubrication oil for low bearing temperature
- Bearing sealing with fixed radial shaft sealings arranged back to
back
- Additional permanently greased labyrinth with V- ring and separate
dust
- labyrinth on the inner side of the bearings.
Oil lubricated roller bearings are standard with all CITIC Roller
Presses. All contact points on the cylindrical roller bearing are
supplied evenly with lubrication. Operating cost can be further
reduced by checking the state of lubricant regularly (alternative
grease lubrication).
CITICIC Roller Presses offer rollers with appropriate wear
protection for almost all applications in the cement and minerals
industry. The two-part roller consisting of shaft and tire allows
for economical surface replacement, single part rollers are used
for high temperature grinding:
- Multi-layer welding enables long running times without stoppages.
- The complete hard face welded surface is used for feed material of
normal wear characteristic. Surface repair can be carried out
quickly.
- The surface with hard-alloy studs is used for extremely abrasive
materials.
