Jo Binmore Posted March 7, 2023 Report Share Posted March 7, 2023 Hi all, whilst I am not new to using clay in school I am new to dealing with the kilns so much. To complicte things a member of the public also uses the space for clases. Recently the kiln has caused an excessive amount of smoke/ haze wihtin the rooms during the first stage of firnig, so much so it has set off the fire alarms. This is ona bisque fire within the first 6-9 hours. The adult classes loads were mixed. I loaded yesterday with all buff clay, fully dry and set to a bisque fire. No delay: ramp1 600c @ 70c/ph. 2nd ramp to 1020c. I set t off yesterday lunchtime and when i returned to the rooms this morning there was a heavy haze. This then set of the smoke detector as I had opened the door to a room where one was located. I have no idea why this is doing it. The room was vented from firing until 9.00pm last night and then shut up but not re-opened this morning. I have never seen this much haze from a kiln any ideas would be fab Quote Link to comment Share on other sites More sharing options...
neilestrick Posted March 7, 2023 Report Share Posted March 7, 2023 6 hours ago, Jo Binmore said: Hi all, whilst I am not new to using clay in school I am new to dealing with the kilns so much. To complicte things a member of the public also uses the space for clases. Recently the kiln has caused an excessive amount of smoke/ haze wihtin the rooms during the first stage of firnig, so much so it has set off the fire alarms. This is ona bisque fire within the first 6-9 hours. The adult classes loads were mixed. I loaded yesterday with all buff clay, fully dry and set to a bisque fire. No delay: ramp1 600c @ 70c/ph. 2nd ramp to 1020c. I set t off yesterday lunchtime and when i returned to the rooms this morning there was a heavy haze. This then set of the smoke detector as I had opened the door to a room where one was located. I have no idea why this is doing it. The room was vented from firing until 9.00pm last night and then shut up but not re-opened this morning. I have never seen this much haze from a kiln any ideas would be fab Is there a vent system for the kiln, either a downdraft vent or an overhead vent of some sort? Is there anything inside the clay that would be burning, like paper used as an armature? Quote Link to comment Share on other sites More sharing options...
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