Re: Temperature Of Lime & Dolime
Dear Sir,
Peeling of profiles cold bonded due to high temperatures is a known issue. Hardening of the rubber due to accelerated aging caused by excessive heat and limitations of the cold bonding process combine to cause problems
You do not mention temperature of Material / Material Size / Belt length / enclosed or open belt line etc. However a solution is available by utilising high temperature resistant EPDM rubber compound and belt assembly by Hot Vulcanised Process.
The process has proven results eliminating the above mentioned issues with normal belt construction and can normally be incorporated as a direct replacement.
I can let you have more information if you would like it ■
Re: Temperature Of Lime & Dolime
Temperature of the material is @ 100 deg to 120 degree centigrade.
Material size is +25 to -90 mm.
Endless belt length is +78 metres.
Belt is enclosed, running inside a gallery.
I agree that hot vulcansing will be better than cold vulcansising of cleats and side wall with base belt.
We have to switch over hot vulcansing if there is no way to achieve the above by cold vulcansing.
Still can i have answers for my questions:
1) What is the minimum temperature of lime and dolime can be possible without affecting quality and production rate of lime or dolime? 2)How much can the cold vulcanised cleats and side wall can with stand ?
Having your answer will help me
1)to talk to Kiln people for controlling the temperature.
2)to talk to the steep angle belt supplier.
Thank you ■
Re: Temperature Of Lime & Dolime
As you are probably aware I cannot give you absolute specific answers to your questions due to the high number of variable factors, it is also for the belt manufacturer to advise you of their belts temperature range.
In “General Terms” I would suggest that you are on the boarder line at the temperatures you advise, as you are experiencing profile separation and assuming the belt has been correctly assembled the fact you have “peeling” indicates you have exceeded safe temperature levels and therefore you should consider switching to Hot Vulcanised type belt.
Unfortunately once the rubber has been affected by heat reducing the material temperature will not reverse the process.
Please contact me if you would like details on Hot Vulcanised option ■
Re: Temperature Of Lime & Dolime
Thank you Mr.Webster. I understood.
I request somebody to help me out for my another question.
What is the minimum temperature of lime and dolime can be possible without affecting quality and production rate of lime or dolime as specified at the starting of this thread?
Where can I get the answer?
Thank you ■
Temperature of Lime & dolime
Dear all,
We have installed steep angle conveyors at the discharge path of lime & dolime kilns. ( 02 lime kilns and 02 dolime kilns. Lime production is @ 700 Tonnes per day and Dolime is also same)
The cleats and side walls of the steep angle conveyors are cold vulcanised with the base belt which I am required to maintain.
The cleats and side wall are peeling out due to higher temperature of lime and dolime. We have taken this issue to the steep angle belt supplier for improving the quality of the bonding of cleats/side wall with base belt. We are complaining to Kiln operation engineers also.
1) What is the minimum temperature of lime and dolime can be possible without affecting quality and production rate of lime or dolime? 2)How much can the cold vulcanised cleats and side wall can with stand ?
Having your answer will help me
1)to talk to Kiln people for controlling the temperature.
2)to talk to the steep angle belt supplier.
Thank you ■