Morrison McKenzie on thu 13 jul 00
We have an Olympic model DD14 gas(propane) kiln.
Have success with reduction firing, but can't get kiln balnced when =
attempting oxidation. Top is 2+cones hot. Attempts to balance stall the =
kiln.
Any suggestions???
TIA for any response
Mo at Fireshadow in the Sandhills of North Carolina
De Ruyter jan on fri 14 jul 00
Hi Mo
It is not quite easy to give you a final reason and solution, the symptoms
you describe give me
the feeling that something is wrong with the supply of Oxygen.
1 Look for the burner ports are they big enough ( are your burners not to
close or in the port)
2 What about the chimney ? I an obstruction or deformation of the port in
the kiln will give you problems
3 If the burners are of the bunzer type you have to start with a basic
pressure of 0.200 bar with regulation on the
burner , when the tap is completely open start to increase the pressure very
gentle.
If the burner is of a ventury type the starting pressure has to be +/- 1.2
bar and the air intake adjusted on a
way that the flame is stable and bleu/ yellow colour.
The fact that there is no problem for reduction confirms me that the oxygen
supply is at the basis of the problem.
Good luck
Jan
----- Original Message -----
From: "Morrison McKenzie"
To:
Sent: Thursday, July 13, 2000 9:17 PM
Subject: help with oxidation firing a gas kiln
We have an Olympic model DD14 gas(propane) kiln.
Have success with reduction firing, but can't get kiln balnced when
attempting oxidation. Top is 2+cones hot. Attempts to balance stall the
kiln.
Any suggestions???
TIA for any response
Mo at Fireshadow in the Sandhills of North Carolina
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