4 posts
Re: Grate cooler Plates bolts are Damaging
Dear Amir,
It seems that plant capacity has been increased and there was not enough margin available to handle the extended capacity by cooler. That's why you are getting clinker temp so high.
There are many types of plates anr available for grate coolers.
First let me know what is the type of plate you are using. Is is plate directly fixed to beam or it is mushroom type plate.
Which bolt is getting sheared is it fron bolt or back side on, normally it happens at front side only.
As on given condition, you can do two things, which can be done in any planned stoppage
1. Re-check al the bolts oreintaion with proepr washer and tight at rated torque. Run the cooler for 8-12 hrs and retight all the bolts one more time.
2. Provide some locking arrangemt for bolts by putting a plate connecting two bolts or any other method.
Befor bolt get shear, it will loose and then only it will shear. So you have to arrest the loosening of bolts.
And as you have mentioned, the proble is in extreme end, proper tightening of bolts will resolve the problem. As there is not enough space availble for tightening and normally because of ductiongs inside the undergrate chamber these area bolts are not tighten properly.
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77 posts
Re: Grate cooler Plates bolts are Damaging
Dear Mr. Amir,
As per my experience your cooler 2nd chamber bolts get damaged may be due to uneven material movement inside the cooler, fine hot clinker segregation causes Red River formation.You should rearrange your cooler plates.
As per my rough calculations your cooler-efficiency is around 55% and you may be losing 25 - 30 Kcal/ kg clinker due to your inefficient cooler.
Why don't you go for IKN cooler types to recover more heat and less damage to your cooler plates...?
Vikpro
49 posts
Re: Grate cooler Plates bolts are Damaging
Dear Mr. Feroze Kindly ,
To improve the plant performance ( Upgrading ) , ,. Process optimisation must be
covers the potential capacity of the plant and measures to achieve the same.
Optimisation of grate cooler operation the first point you need to improve your plant performance .
To obtaining that you have to Installation of variable speed drive for cooler fans and one of the cooler exhaust fans. Extension of clinker cooler area by provision of 3rd grate and increasing the capacity of cooling air fans Or You can optimising your grate plate design specially at hot zone aria . My best guess you working with colax grate cooler and the main cause of your bolt damaged is due to thermal stresses and thermal fatigue ( Cracks )as result as increasing of production rate and backward clinker pushing ( grate shape design ) And to increasing somebody experience i need to add there are no ways to optimising in feeding rate with red rever or others problems the clinker`s cooleres always limit the plants productions with these problems . I have had same problem , Slop and retaining ribs with helical spring mounting ( changing in grate plate design ) , And best heat recovering ( facilitates air distribution ) That could fix your complete problems Best regards ILA capacity of cooling air fans Or You can optimising your grate plate design specially at hot zone aria . My best guess you working with colax grate cooler and the main cause of your bolt damaged is due to thermal stresses and thermal fatigue ( Cracks )as result as increasing of production rate and backward clinker pushing ( grate shape design ) And to increasing somebody experience i need to add there are no ways to optimising in feeding rate with red rever or others problems the clinker`s cooleres always limit the plants productions with these problems . I have had same problem , Slop and retaining ribs with helical spring mounting ( changing in grate plate design ) , And best heat recovering ( facilitates air distribution ) That could fix your complete problems Best regards ILA
Installation of variable speed drive for cooler fans and one of the cooler
exhaust fans.
Extension of clinker cooler area by provision of 3rd grate and increasing the capacity of cooling air fans Or You can optimising your grate plate design specially at hot zone aria . My best guess you working with colax grate cooler and the main cause of your bolt damaged is due to thermal stresses and thermal fatigue ( Cracks )as result as increasing of production rate and backward clinker pushing ( grate shape design ) And to increasing somebody experience i need to add there are no ways to optimising in feeding rate with red rever or others problems the clinker`s cooleres always limit the plants productions with these problems . I have had same problem , Slop and retaining ribs with helical spring mounting ( changing in grate plate design ) , And best heat recovering ( facilitates air distribution ) That could fix your complete problems Best regards ILA
capacity of cooling air fans Or You can optimising your grate plate design specially at hot zone aria .
My best guess you working with colax grate cooler and the main cause of your bolt damaged is due to thermal stresses and thermal fatigue ( Cracks )as result as increasing of production rate and backward clinker pushing ( grate shape design )
And to increasing somebody experience i need to add there are no ways to optimising in feeding rate with red rever or others problems the clinker`s cooleres always limit the plants productions with these problems .
I have had same problem , Slop and retaining ribs with helical spring mounting ( changing in grate plate design ) , And best heat recovering ( facilitates air distribution )
That could fix your complete problems
Best regards
ILA
4 posts
Grate cooler Plates bolts are Damaging
hello mr amir feroze
> you try this slowly slowly by observing put the burner in up to 100mm by 25mm steps
and then see the result also observe clinker temp i hope that it will drop.
> 2nd check your cooler bed and caculate your cooler air volume.