Title:
A METHOD FOR OPERATING A CRUSHER, A CRUSHING SYSTEM AND A CRUSHING PLANT
Document Type and Number:
WIPO Patent Application WO/2014/191617
Kind Code:
A3
Abstract:
A method for operating a mineral material crusher, a system comprising a crusher, and a crushing plant. In the method for operating a mineral material crusher (100,410,420), which comprises a first crushing element (101,412,421) and a second crushing element (102,413,422), defining a crusher gap therebetween, and the crusher gap is maintained using at least one hydraulic cylinder (108- 10,414,425), the hydraulic liquid pressure (PM ) in at least one of the hydraulic cylinders is measured (211) and hydraulic liquid is evacuated from the at least one hydraulic cylinder in case the hydraulic liquid pressure (340,350) in at least one of the hydraulic cylinders exceeds a set opening pressure limit. During the crushing process following steps are repeated: generating (212), based on the hydraulic liquid pressure measurement, a representative value of a normal hydraulic liquid pressure in the at least one hydraulic cylinder (108-110,414,425) caused by the crushable material in that certain crushing application; comparing (204) the generated representative value and the set opening pressure limit; and selecting opening pressure limit (340,350,PTh ) which is higher than the measured normal hydraulic liquid pressure.
Inventors:
HOLOPAINEN PASI (FI)
Application Number:
PCT/FI2014/050406
Publication Date:
April 23, 2015
Filing Date:
May 26, 2014
Export Citation:
Assignee:
METSO MINERALS INC (FI)
International Classes:
B02C25/00; B02C23/04
Domestic Patent References:
| WO2004069415A1 | 2004-08-19 | |||
| WO2012087219A1 | 2012-06-28 | |||
| WO2005007293A1 | 2005-01-27 |
Attorney, Agent or Firm:
ESPATENT OY (Helsinki, FI)
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