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Vertical roller mill for raw materials

CTCN
Sectors:
Objective:
Opportunities enabled:
Technology:
Country:
Japan
Maturity:

The power consumption level of vertical roller mill is lower than that of tube (ball) mill. The feed is ground between the disc table and the rollers which are hydraulically pressed against a disc table. The remaining time of raw materials in vertical roller mill is much shorter than that in tube (ball) mill; therefore, the crushing process and mixing process became more harmonized and this contributes to quality control.
The vertical roller mill can crush materials which are too large to be fed into the tube (ball) mill. The ground materials are dried by the flue gas from the kiln.

Benefits:

(for 200t-RM/h capacity)

  • Reduction of power consumption: 2,240,000 kWh/y
  • Specific power consumption: Vertical roller mill 14-18 kWh/t-RM, Tube mill 20-26 kWh/t-RM: about 30% reduction
Co-benefits:

(for 200t-RM/h capacity)

  • Production: Vertical roller mill 160-180% vs Tube mill 100%; 60-80% increase
  • Installation space: smaller
  • Noise level: lower
Differentiators:

n/a

Succes factors and requirements:

This technology is related to vertical mill applied to other process.

Investments required:

n/a

Timeframe:

n/a/

Countries where implemented:
India
Contact:

Ministry of Economy, Trade and Industry

Email: meti_low-carbon-technology@meti.go.jp