Roller mill

Details Roller mill Roller mill

2011-06-28

2011-06-28

Rosenbaum, Mark (Department: 3725)

Solid material comminution or disintegration

Apparatus

Plural rotary or oscillatory surfaces cooperate with common...

Reexamination Certificate

active

07967228

ABSTRACT:
Described is a roller mill (1) for grinding particulate material, such as cement raw materials, cement clinker and similar materials, said roller mill comprising a substantially horizontal grinding table (3), at least one therewith interactively operating roller (4) which is configured for rotation about a roller shaft (6) through the use of a bearing (7) for the roller, and a closed circulation system for lubricant for lubricating the bearing (7) for the roller, said circulation system comprising a reservoir (9), ducts (10) for feeding of lubricant to the bearing (7) for the roller and ducts (11) for recirculating the lubricant from the bearing (7) for the roller. The roller mill further comprises an autogenously regulated pressure pump means (20) which is driven by the rotation of the roller (4), and has a first part (21) which is mounted on the roller shaft (6) and a second part (22) which is mounted on the roller (4) and rotates therewith.During the operation of the mill the pump means delivers a significant pressure contribution for recirculating the lubricant to the reservoir, and has a capacity which is proportional to the rotational speed of the roller and hence the lubricant requirement.

REFERENCES:
patent: 4168807 (1979-09-01), Dibowski et al.
International Search Report for PCT/EP2008/055177.
Written Opinion of the International Searching Authority for PCT/EP2008/055177.

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