High-pressure roller grinding of cement clinker and hard brittle
materials is a modern and very energy-efficient process.
During its relatively short history, roller press technology has
undergone significant development from a pre-grinding process to a
range of applications including semi-finish grinding and finish
grinding.
The JDG roller press developed by our own engineersranks among the
most advanced and efficient units available. Its design
incorporates the vast experience and expertise gained since roller
press technology was first introduced.
In high-pressure roller press comminution the feed material is
exposed to very high pressure for a short time. The high pressure
causes formation of microcracks in the feed particles and generates
a substantial amount of fine material. If the pressed material is
fed directly to a ball mill, the power consumption required to
produce finished cement will be much lower than that of a mill fed
with unpressed material. This makes it possible to increase the
throughput of a given size ball mill and reduce the specific power
consumption of the whole mill system.
The roller press is a flexible solution, highly suitable both for
upgrades and for new installations. Upgrading may increase capacity
by up to 100-300%, while the total specific energy consumption of
new installations may be reduced by 50-100% percent compared with
conventional grinding systems. The most typical process
configurations are described in the following. Besides the
cost-saving features already mentioned the JDG roller press is
characterised by:
Long wear part life.
Low operational and maintenance costs.
Short shutdown for wear part replenishment.
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Technical parameter table】
Model Technical parameter | JDG80-25 | JDG100-35 | JDG120-45 | JDG140-70 | JDG140-80 | JDG150-100 | JDG160-120 | JDG160-140 | JDG170-180 |
Roller diameter (mm) | 800 | 1000 | 1200 | 1400 | 1400 | |
