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Lockley

Member Since 05 Aug 2011
Offline Last Active Mar 21 2014 12:36 PM
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Posts I've Made

In Topic: Laying Bricks

21 March 2014 - 12:39 PM

IFB does benefit from a skim coat of refectory coating.  The high carbon monoxide content of fuel gas firing tends to age IFB prematurely.  There are a number of coating which will also improve the efficiency of your Kiln.  Any area  with direct flame contact should be lined with standard fire brick or minimally coated with refectory cement. 

The suggestion of surrounding the kiln with insulating blanket is excellent.   There is a hardener which will firm the outer layer of ISB  and make it more stable.  In the past I have built shelters around my units from salvaged galvanized duct work and never found the metal dangerously hot when protecting layers of ISB/IFB. 


In Topic: Fuel Efficient Kiln Design

17 March 2014 - 10:08 AM

The basic concept created in the article is highly similar to that used in the foundry and steel production industries. Recovering wasted heat from exhaust gas is in fact the only practical way to produce steel.   A number of Artisan iron and bronze workers use heat recovery systems for their small furnaces.  

  I have been scheming to create a lower fire system for my own use.  The use of and extruder to fabricate refectory tubes is something that had simply never occurred to me. 

 

I applaud the creators and developers the recuperative  Pottery Kiln for their ingenuity in adapting the concept to the unique demands of Pottery.  


In Topic: Forced air burner plans?

22 May 2013 - 10:12 AM

For the most helpful information on burner systems for Kiln's You will want to contact:

www.wardburner.com


They are very helpful and able to supply safe systems for any size kiln with integrated control.
Dimmer switches need not apply!


Lockley

In Topic: Another kiln build thread...

15 May 2013 - 11:27 AM

Just a quick comment about the Brick. A number of years ago I had a long discussion with an engineer for A.P. Green company( a company that has since been rolled into a conglomerate) the manufacturer of Empire Brick. Yes the DP brick is excellent for hot face applications. In the course of analyzing my proposed design it turned out that at typical Kiln temperatures hard brick is essentially transparent to heat imput. (Heat leaves as fast as it arrives)

This means your eventual kiln will need insulation to the same extent as an entirely soft brick Kiln. There are a number of coatings for face brick which will slow or reduce the rate of heat transfer. They are made with zirconium compounds if my memory serves.

Lockley