[Stoves] Fire brick

[CHRISTA ROTH]

Roger, our colleagues in Senegal use the sap of a baobab tree variety called LALO to impregnate the mud bricks. it does have a positive effect and is cheap. I found it in Kaolak and smaller villages around sold in little plastic bags on the market. dead cheap.we also used it for the final coating of the firing kiln from banco.

regards christa

Am 24.01.2013 um 18:07 schrieb Roger Samson <rogerenroute at yahoo.ca>:

> 
> Hi Patrick
>  
> On our Noflay stove we don't use fire bricks for the shroud. The unfired bricks are much cheaper about 1/2 the price and usually sourced with lower transport costs.  Fire bricks though are more water resistant if used in an outdoor application when tropical rain storms hit. 
>  
> I am an agronomist with some background in soils avidly learning about clay brick production. We made about 150,000 clay bricks this past year.  Our experience  is to spend considerable time examining the various clay fields in a region as certain clays provide  outstanding results. 
>  
>  regards
>  
> roger samson
> 
> --- On Thu, 1/24/13, Patrick Mcgillan <patrick.mcgillan at gmail.com> wrote:
> 
> From: Patrick Mcgillan <patrick.mcgillan at gmail.com>
> Subject: [Stoves] Fire brick
> To: "Discussion of biomass cooking stoves" <stoves at lists.bioenergylists.org>
> Received: Thursday, January 24, 2013, 6:02 PM
> 
> I have read a lot about fire brick and its use inside a stove where the flames hit it. It is used in many places to line a stove made of steel. But what about on the outside where the flames never hit it. Is there any reason it has to be this special kind of brick? I am thinking, that as long as the flames never actually touch the brick, then any kind of brick can be used.
> 
> Patrick
> 
> 
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