Rapid Set 55 lb. Cement All Multi-Purpose Construction Material
Cheap,non insulative, high temperature refractory.
I used it on the lid of my firepit,worked well.
I believe its rated for about 2300°F.
On the other hand, maybe a grill over the naked steel would be good.
Find a metalworking factory.
Ask them to cut a cookie of thick steel. Or cast iron, if you can find it. The size of the barrel top inside the lip. 1/2 thick or more in thickness.
Cut the barrel top one inch in.
Drill several holes in the edge of the metal plate. Put a gasket on the lip, metal plate on top. Then screw with self taping screws.
Or find a barrel top, with its clamp. Same system. Again. Gasket and clamp.
Well I went to the bottom of the SDS and finally found the reference to decomp temperature being 2460 deg F. Funny that the spec sheet doesn't say a single thing about it being refractory.
Thanks for the heads up. I would have never known that Home Depot's rapid set cement was also refractory.
Jay Hughart wrote:Ok I scored 25lb of Hawthorn bond fireclay. Should I just mix it to a mortar like consistency with water or do I need to add anything to it? Sand pea gravel portland cement ect? I think the clay alone will be fine but I have never actually worked with it and chipping the motar from the top of the barrel was dusty and messy wanna get it right this time! Thanks for everyones help and input!
Just like making clay-sand cob, one part fireclay to between 3.5 ~ 4.0 parts masonry sand. Use as little water as possible, to cut down on cracking as it cures. One method I prefer to use, first mix fireclay with water to form "clay slip", about the consistency of pancake batter. Let it sit overnight to insure the fireclay has completely absorbed the water. Then mix in masonry sand to form a stiff cob that can be formed to the desired shape etc. Such a surface made from this will conduct heat well and boil water, but it will be subject to abrasion and wearing away with heavy use like dragging pots across the surface.