xxxx
239 posts
TimePosted 11/12/2012 08:34:07
xxxx says

re mill vent fan inlet water dropping

Mill dimentions:

2.44* 4.508 m , I Chanmber

2.48* 8.848 m , II Chamber

I chamber Gr. Media = 24

II Chamner Gr. Media = 55t

Mill Kw= 830-840 kw

Mill feed Temp . _~ 110 deg. (Clinker + gypsum)

Mill water Spray = 0.65-0.75 NM3/Hr

BF Inlet Temp. = 110-113 deg. (Mill outlet Gas temp  Appx. 115 deg)

Cement Temp. Appx. 122-125 deg.

open Ckt Mill

ENGR

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shafi
2 posts
TimePosted 13/12/2012 16:05:56
shafi says

re mill vent fan inlet water dropping

Insulation of inlet and outlet ducts

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xxxx
239 posts
TimePosted 14/12/2012 01:18:48
xxxx says

re mill vent fan inlet water dropping

Mill outlet to bag filter inlet ducts including bag filter is well insulated. THe only thing left is the bag filter outlet duct & stack which I have already suggested to insulate .

Similar case is with our another mill which is cloase ckt but we have an ESP in the vent ckt.

There water do not drops but coating is there in the entire mill outlet bucket elevator casing, separator & in the ESP hoppers . This we clean time to time.

The only diffrence from normal operation I found is the very low velocity through mill in both cases , but If i increase the vent volume finess decreases, vent power increases & then results in output.

So please suggest something

ENGR

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gks
151 posts
TimePosted 14/12/2012 15:57:08
gks says

re mill vent fan inlet water dropping

Dear xxx

Minimum venting air flow to be 14518.86 m3/hr

Mill air speed - 1.4 m/s

Water spray to be  max.  0.43 kg/t cement .

For your case.

GK SHARMA

 

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