[Stoves] Burning Char

[Anand Karve]

Dear Stovers,
charcoal contains many substances other than carbon. Iron used to be
extracted in ancient India using charcoal, which reduced the iron oxide to
metallic iron. The minerals in the charcoal got mixed with the iron to
impart special characteristics to the iron. We have an iron pillar in New
Delhi, which was erected some 1600 years ago. It has still not rusted.
Crispin sent me an article about this pillar and it says in the article
that this pillar had iron having a high phosphorus content. They have even
named the plant from which the charcoal was deriv. The spontaneous
combustion of char, reported by Frank, could be due to elemental phosphorus
in the charcoal.
Yours
A.D.Karve

On Sun, Oct 14, 2012 at 11:38 PM, Frank Shields <frank at compostlab.com>wrote:

>  ** **
>
> Greetings Stovers,****
>
> ** **
>
> ** **
>
> Drying some biochar on paper plates at less than 100c and the plate starts
> smoldering and actually glows red. The last batch that did this has very
> high carbonates (not sure what that means). Most chars do not do this. Any
> suggestions as to why? ****
>
> ** **
>
> Thanks****
>
> ** **
>
> Frank****
>
> ** **
>
> ** **
>
> Frank Shields****
>
> Control Laboratories, Inc.****
>
> 42 Hangar Way****
>
> Watsonville, CA  95076****
>
> (831) 724-5422 tel****
>
> (831) 724-3188 fax****
>
> www.biocharlab.com****
>
> ** **
>
> ** **
>
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-- 
***
Dr. A.D. Karve
Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
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