Title:
EQUIPMENT FOR PRODUCTION OF CWM
Document Type and Number:
Japanese Patent JP3474215
Kind Code:
B2
Abstract:
PURPOSE: To prevent the stoppage of the coal feed system with a solid fuel (feed coal) due to the reverse flow of steam, to make the continuous production of a CWM slurry possible, and to improve the reliability of the equipment.
CONSTITUTION: In order to prevent the reverse flow of steam during the stop of a mill 6, an automatic opening and shutting gate 12 is interlocked with the state of running of the mill 6, and the gate 12 shuts when the mill 6 is stopped to thereby shut out the steam generated by the heat of grinding of the feed coal, which has been a defect of a wet mill, and to prevent a chute 15 from being stopped with the feed stock solidified with the steam. Further, a feed water branch pipe 13 through which feed water is introduced into the upstream of the gate 12 having the possibility of stoppage during the running of the mill 6. An opening and shutting valve 16 which opens during the running of the mill 6 and shuts during the stop of the mill 6 is provided so as to utilize the feed water which inherently needs to be always supplied to the mill 6 during its running as washing water for the prevention of the stoppage of the chute 15 simultaneously with the start of the running of the mill 6.
Inventors:
Toshinobu Shima
Koda Fumio
Masamichi Kazuki
Yoshitaka Takahashi
Takashi Kawano
Koda Fumio
Masamichi Kazuki
Yoshitaka Takahashi
Takashi Kawano
Application Number:
JP34566392A
Publication Date:
December 08, 2003
Filing Date:
December 25, 1992
Export Citation:
Assignee:
Babcock Hitachi Ltd.
International Classes:
B02C17/00; B02C17/04; B02C25/00; C10L1/32; (IPC1-7): C10L1/32; B02C17/00; B02C17/04; B02C25/00
Domestic Patent References:
| JP63147528A | ||||
| JP61283363A | ||||
| JP57135054A | ||||
| JP63248457A | ||||
| JP5212306A |
Attorney, Agent or Firm:
Takayoshi Matsunaga