Sea Kayaks Techniques Bulletin Board

Re: Limestone

Posted By: Brian Nystrom
Date: Monday, 7 March 2005, at 6:57 a.m.

In Response To: Re: Limestone *LINK* (Tony Olsen)

: I think you will need to "calcine" the limestone to get a reaction
: from it later. This process is to put finely ground limestone in a kiln
: and heat it to greater than 900 deg F for a while. I think this is the
: stuff in plaster, and if you have worked with plaster at all, you will
: probably remember the thermal reaction when the water was added.

I saw this procedure recently on the PBS show "Rough Science". The task was to make hand warmers from natural materials. Limestone was crushed, heated then placed in small plastic bags after it cooled. When water was added, it created so much heat that the bags melted!

Messages In This Thread

Heater meals... self-heating food! *LINK*
Malcolm Schweizer -- Thursday, 3 March 2005, at 4:21 p.m.

That's not an advertisement, just passing it on. *NM*
Malcolm Schweizer -- Thursday, 3 March 2005, at 4:25 p.m.

Re: Heater meals... self-heating food!
Mike Scarborough -- Friday, 4 March 2005, at 8:01 a.m.

Re: Heater meals... self-heating food! *LINK*
Reg Lake -- Friday, 4 March 2005, at 11:47 p.m.

Re: Limestone
Mike Scarborough -- Saturday, 5 March 2005, at 9:16 a.m.

Re: Limestone *LINK*
Tony Olsen -- Saturday, 5 March 2005, at 9:57 a.m.

Re: Limestone
Brian Nystrom -- Monday, 7 March 2005, at 6:57 a.m.

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